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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT COMPILER COMPONENTS --
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4 -- --
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5 -- G N A T L I N K --
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6 -- --
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7 -- B o d y --
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8 -- --
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131
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9 -- Copyright (C) 1996-2018, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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17 -- for more details. You should have received a copy of the GNU General --
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18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
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19 -- http://www.gnu.org/licenses for a complete copy of the license. --
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20 -- --
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21 -- GNAT was originally developed by the GNAT team at New York University. --
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22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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23 -- --
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24 ------------------------------------------------------------------------------
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25
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26 -- Gnatlink usage: please consult the gnat documentation
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27
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28 with ALI; use ALI;
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29 with Csets;
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30 with Gnatvsn; use Gnatvsn;
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31 with Indepsw; use Indepsw;
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32 with Namet; use Namet;
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33 with Opt;
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34 with Osint; use Osint;
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35 with Output; use Output;
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36 with Snames;
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37 with Switch; use Switch;
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38 with System; use System;
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39 with Table;
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40 with Targparm;
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41 with Types;
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42
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43 with Ada.Command_Line; use Ada.Command_Line;
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44 with Ada.Exceptions; use Ada.Exceptions;
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45
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46 with System.OS_Lib; use System.OS_Lib;
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47 with System.CRTL;
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48
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49 with Interfaces.C_Streams; use Interfaces.C_Streams;
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50 with Interfaces.C.Strings; use Interfaces.C.Strings;
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51
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52 procedure Gnatlink is
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53 pragma Ident (Gnatvsn.Gnat_Static_Version_String);
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54
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55 Shared_Libgcc_String : constant String := "-shared-libgcc";
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56 Shared_Libgcc : constant String_Access :=
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57 new String'(Shared_Libgcc_String);
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58 -- Used to invoke gcc when the binder is invoked with -shared
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59
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60 Static_Libgcc_String : constant String := "-static-libgcc";
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61 Static_Libgcc : constant String_Access :=
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62 new String'(Static_Libgcc_String);
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63 -- Used to invoke gcc when shared libs are not used
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64
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65 package Gcc_Linker_Options is new Table.Table (
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66 Table_Component_Type => String_Access,
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67 Table_Index_Type => Integer,
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68 Table_Low_Bound => 1,
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69 Table_Initial => 20,
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70 Table_Increment => 100,
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71 Table_Name => "Gnatlink.Gcc_Linker_Options");
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72 -- Comments needed ???
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73
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74 package Libpath is new Table.Table (
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75 Table_Component_Type => Character,
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76 Table_Index_Type => Integer,
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77 Table_Low_Bound => 1,
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78 Table_Initial => 4096,
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79 Table_Increment => 100,
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80 Table_Name => "Gnatlink.Libpath");
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81 -- Comments needed ???
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82
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83 package Linker_Options is new Table.Table (
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84 Table_Component_Type => String_Access,
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85 Table_Index_Type => Integer,
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86 Table_Low_Bound => 1,
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87 Table_Initial => 20,
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88 Table_Increment => 100,
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89 Table_Name => "Gnatlink.Linker_Options");
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90 -- Comments needed ???
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91
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92 package Linker_Objects is new Table.Table (
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93 Table_Component_Type => String_Access,
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94 Table_Index_Type => Integer,
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95 Table_Low_Bound => 1,
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96 Table_Initial => 20,
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97 Table_Increment => 100,
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98 Table_Name => "Gnatlink.Linker_Objects");
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99 -- This table collects the objects file to be passed to the linker. In the
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100 -- case where the linker command line is too long then programs objects
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101 -- are put on the Response_File_Objects table. Note that the binder object
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102 -- file and the user's objects remain in this table. This is very
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103 -- important because on the GNU linker command line the -L switch is not
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104 -- used to look for objects files but -L switch is used to look for
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105 -- objects listed in the response file. This is not a problem with the
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106 -- applications objects as they are specified with a full name.
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107
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108 package Response_File_Objects is new Table.Table (
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109 Table_Component_Type => String_Access,
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110 Table_Index_Type => Integer,
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111 Table_Low_Bound => 1,
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112 Table_Initial => 20,
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113 Table_Increment => 100,
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114 Table_Name => "Gnatlink.Response_File_Objects");
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115 -- This table collects the objects file that are to be put in the response
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116 -- file. Only application objects are collected there (see details in
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117 -- Linker_Objects table comments)
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118
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119 package Binder_Options_From_ALI is new Table.Table (
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120 Table_Component_Type => String_Access,
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121 Table_Index_Type => Integer,
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122 Table_Low_Bound => 1, -- equals low bound of Argument_List for Spawn
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123 Table_Initial => 20,
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124 Table_Increment => 100,
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125 Table_Name => "Gnatlink.Binder_Options_From_ALI");
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126 -- This table collects the switches from the ALI file of the main
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127 -- subprogram.
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128
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129 package Binder_Options is new Table.Table (
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130 Table_Component_Type => String_Access,
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131 Table_Index_Type => Integer,
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132 Table_Low_Bound => 1, -- equals low bound of Argument_List for Spawn
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133 Table_Initial => 20,
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134 Table_Increment => 100,
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135 Table_Name => "Gnatlink.Binder_Options");
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136 -- This table collects the arguments to be passed to compile the binder
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137 -- generated file.
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138
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139 Gcc : String_Access := Program_Name ("gcc", "gnatlink");
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140
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141 Read_Mode : constant String := "r" & ASCII.NUL;
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142
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143 Begin_Info : constant String := "-- BEGIN Object file/option list";
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144 End_Info : constant String := "-- END Object file/option list ";
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145
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146 Gcc_Path : String_Access;
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147 Linker_Path : String_Access;
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148 Output_File_Name : String_Access;
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149 Ali_File_Name : String_Access;
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150 Binder_Spec_Src_File : String_Access;
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151 Binder_Body_Src_File : String_Access;
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152 Binder_Ali_File : String_Access;
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153 Binder_Obj_File : String_Access;
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154
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155 Base_Command_Name : String_Access;
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156
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157 Target_Debuggable_Suffix : String_Access;
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158
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159 Tname : Temp_File_Name;
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160 Tname_FD : File_Descriptor := Invalid_FD;
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161 -- Temporary file used by linker to pass list of object files on
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162 -- certain systems with limitations on size of arguments.
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163
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164 Debug_Flag_Present : Boolean := False;
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165 Verbose_Mode : Boolean := False;
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166 Very_Verbose_Mode : Boolean := False;
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167
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168 Standard_Gcc : Boolean := True;
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169
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170 Compile_Bind_File : Boolean := True;
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171 -- Set to False if bind file is not to be compiled
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172
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173 Create_Map_File : Boolean := False;
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174 -- Set to True by switch -M. The map file name is derived from
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175 -- the ALI file name (mainprog.ali => mainprog.map).
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176
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177 Object_List_File_Supported : Boolean;
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178 for Object_List_File_Supported'Size use Character'Size;
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179 pragma Import
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180 (C, Object_List_File_Supported, "__gnat_objlist_file_supported");
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181 -- Predicate indicating whether the linker has an option whereby the
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182 -- names of object files can be passed to the linker in a file.
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183
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184 Object_File_Option_Ptr : Interfaces.C.Strings.chars_ptr;
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185 pragma Import (C, Object_File_Option_Ptr, "__gnat_object_file_option");
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186 -- Pointer to a string representing the linker option which specifies
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187 -- the response file.
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188
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189 Object_File_Option : constant String := Value (Object_File_Option_Ptr);
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190 -- The linker option which specifies the response file as a string
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191
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192 Using_GNU_response_file : constant Boolean :=
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193 Object_File_Option'Length > 0
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194 and then Object_File_Option (Object_File_Option'Last) = '@';
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195 -- Whether a GNU response file is used
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196
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197 Object_List_File_Required : Boolean := False;
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198 -- Set to True to force generation of a response file
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199
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200 Shared_Libgcc_Default : Character;
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201 for Shared_Libgcc_Default'Size use Character'Size;
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202 pragma Import
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203 (C, Shared_Libgcc_Default, "__gnat_shared_libgcc_default");
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204 -- Indicates wether libgcc should be statically linked (use 'T') or
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205 -- dynamically linked (use 'H') by default.
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206
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207 function Base_Name (File_Name : String) return String;
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208 -- Return just the file name part without the extension (if present)
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209
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210 procedure Check_Existing_Executable (File_Name : String);
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211 -- Delete any existing executable to avoid accidentally updating the target
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212 -- of a symbolic link, but produce a Fatail_Error if File_Name matches any
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213 -- of the source file names. This avoids overwriting of extensionless
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214 -- source files by accident on systems where executables do not have
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215 -- extensions.
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216
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217 procedure Delete (Name : String);
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218 -- Wrapper to unlink as status is ignored by this application
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219
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220 procedure Error_Msg (Message : String);
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221 -- Output the error or warning Message
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222
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223 procedure Exit_With_Error (Error : String);
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224 -- Output Error and exit program with a fatal condition
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225
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226 procedure Process_Args;
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227 -- Go through all the arguments and build option tables
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228
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229 procedure Process_Binder_File (Name : String);
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230 -- Reads the binder file and extracts linker arguments
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231
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232 procedure Usage;
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233 -- Display usage
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234
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235 procedure Write_Header;
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236 -- Show user the program name, version and copyright
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237
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238 procedure Write_Usage;
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239 -- Show user the program options
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240
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241 ---------------
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242 -- Base_Name --
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243 ---------------
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244
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245 function Base_Name (File_Name : String) return String is
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246 Findex1 : Natural;
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247 Findex2 : Natural;
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248
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249 begin
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250 Findex1 := File_Name'First;
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251
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252 -- The file might be specified by a full path name. However,
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253 -- we want the path to be stripped away.
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254
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255 for J in reverse File_Name'Range loop
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256 if Is_Directory_Separator (File_Name (J)) then
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257 Findex1 := J + 1;
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258 exit;
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259 end if;
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260 end loop;
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261
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262 Findex2 := File_Name'Last;
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263 while Findex2 > Findex1 and then File_Name (Findex2) /= '.' loop
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264 Findex2 := Findex2 - 1;
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265 end loop;
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266
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267 if Findex2 = Findex1 then
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268 Findex2 := File_Name'Last + 1;
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269 end if;
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270
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271 return File_Name (Findex1 .. Findex2 - 1);
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272 end Base_Name;
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273
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274 -------------------------------
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275 -- Check_Existing_Executable --
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276 -------------------------------
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277
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278 procedure Check_Existing_Executable (File_Name : String) is
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279 Ename : String := File_Name;
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280 Efile : File_Name_Type;
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281 Sfile : File_Name_Type;
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282
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283 begin
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284 Canonical_Case_File_Name (Ename);
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285 Name_Len := 0;
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286 Add_Str_To_Name_Buffer (Ename);
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287 Efile := Name_Find;
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288
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289 for J in Units.Table'First .. Units.Last loop
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290 Sfile := Units.Table (J).Sfile;
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291 if Sfile = Efile then
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292 Exit_With_Error
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293 ("executable name """ & File_Name & """ matches "
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294 & "source file name """ & Get_Name_String (Sfile) & """");
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295 end if;
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296 end loop;
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297
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298 Delete (File_Name);
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299 end Check_Existing_Executable;
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300
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301 ------------
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302 -- Delete --
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303 ------------
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304
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305 procedure Delete (Name : String) is
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306 Status : int;
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307 pragma Unreferenced (Status);
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308 begin
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309 Status := unlink (Name'Address);
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310 -- Is it really right to ignore an error here ???
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311 end Delete;
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312
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313 ---------------
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314 -- Error_Msg --
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315 ---------------
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316
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317 procedure Error_Msg (Message : String) is
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318 begin
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319 Write_Str (Base_Command_Name.all);
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320 Write_Str (": ");
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321 Write_Str (Message);
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322 Write_Eol;
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323 end Error_Msg;
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324
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325 ---------------------
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326 -- Exit_With_Error --
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327 ---------------------
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328
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329 procedure Exit_With_Error (Error : String) is
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330 begin
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331 Error_Msg (Error);
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332 Exit_Program (E_Fatal);
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333 end Exit_With_Error;
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334
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335 ------------------
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336 -- Process_Args --
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337 ------------------
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338
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339 procedure Process_Args is
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340 Next_Arg : Integer;
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341
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342 Skip_Next : Boolean := False;
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343 -- Set to true if the next argument is to be added into the list of
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344 -- linker's argument without parsing it.
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345
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346 procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage);
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347
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348 -- Start of processing for Process_Args
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349
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350 begin
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351 -- First, check for --version and --help
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352
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353 Check_Version_And_Help ("GNATLINK", "1996");
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354
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355 -- Loop through arguments of gnatlink command
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356
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357 Next_Arg := 1;
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358 loop
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359 exit when Next_Arg > Argument_Count;
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360
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361 Process_One_Arg : declare
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362 Arg : constant String := Argument (Next_Arg);
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363
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364 begin
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365 -- Case of argument which is a switch
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366
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367 -- We definitely need section by section comments here ???
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368
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369 if Skip_Next then
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370
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371 -- This argument must not be parsed, just add it to the
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372 -- list of linker's options.
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373
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374 Skip_Next := False;
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375
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376 Linker_Options.Increment_Last;
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377 Linker_Options.Table (Linker_Options.Last) :=
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378 new String'(Arg);
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379
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380 elsif Arg'Length /= 0 and then Arg (1) = '-' then
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381 if Arg'Length > 4 and then Arg (2 .. 5) = "gnat" then
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382 Exit_With_Error
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383 ("invalid switch: """ & Arg & """ (gnat not needed here)");
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384 end if;
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385
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386 if Arg = "-Xlinker" then
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387
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388 -- Next argument should be sent directly to the linker.
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389 -- We do not want to parse it here.
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390
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391 Skip_Next := True;
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392
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393 Linker_Options.Increment_Last;
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394 Linker_Options.Table (Linker_Options.Last) :=
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395 new String'(Arg);
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396
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397 elsif Arg (2) = 'g'
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398 and then (Arg'Length < 5 or else Arg (2 .. 5) /= "gnat")
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399 then
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400 Debug_Flag_Present := True;
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401
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402 Linker_Options.Increment_Last;
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403 Linker_Options.Table (Linker_Options.Last) :=
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404 new String'(Arg);
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405
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406 Binder_Options.Increment_Last;
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407 Binder_Options.Table (Binder_Options.Last) :=
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408 Linker_Options.Table (Linker_Options.Last);
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409
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410 elsif Arg'Length >= 3 and then Arg (2) = 'M' then
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411 declare
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412 Switches : String_List_Access;
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413
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414 begin
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415 Convert (Map_File, Arg (3 .. Arg'Last), Switches);
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416
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417 if Switches /= null then
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418 for J in Switches'Range loop
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419 Linker_Options.Increment_Last;
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420 Linker_Options.Table (Linker_Options.Last) :=
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421 Switches (J);
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422 end loop;
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423 end if;
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424 end;
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425
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426 elsif Arg'Length = 2 then
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427 case Arg (2) is
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428 when 'f' =>
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429 if Object_List_File_Supported then
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430 Object_List_File_Required := True;
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431 else
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432 Exit_With_Error
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433 ("Object list file not supported on this target");
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434 end if;
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435
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436 when 'M' =>
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437 Create_Map_File := True;
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438
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439 when 'n' =>
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440 Compile_Bind_File := False;
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441
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442 when 'o' =>
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443 Next_Arg := Next_Arg + 1;
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444
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445 if Next_Arg > Argument_Count then
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446 Exit_With_Error ("Missing argument for -o");
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447 end if;
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448
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449 Output_File_Name :=
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450 new String'(Executable_Name
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451 (Argument (Next_Arg),
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452 Only_If_No_Suffix => True));
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453
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454 when 'P' =>
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455 Opt.CodePeer_Mode := True;
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456
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457 when 'R' =>
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458 Opt.Run_Path_Option := False;
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459
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460 when 'v' =>
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461
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462 -- Support "double" verbose mode. Second -v
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463 -- gets sent to the linker and binder phases.
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464
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465 if Verbose_Mode then
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466 Very_Verbose_Mode := True;
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467
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468 Linker_Options.Increment_Last;
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469 Linker_Options.Table (Linker_Options.Last) :=
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470 new String'(Arg);
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471
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472 Binder_Options.Increment_Last;
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473 Binder_Options.Table (Binder_Options.Last) :=
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474 Linker_Options.Table (Linker_Options.Last);
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475
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476 else
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477 Verbose_Mode := True;
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478
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479 end if;
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480
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481 when others =>
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482 Linker_Options.Increment_Last;
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483 Linker_Options.Table (Linker_Options.Last) :=
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484 new String'(Arg);
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485
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486 end case;
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487
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488 elsif Arg (2) = 'B' then
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489 Linker_Options.Increment_Last;
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490 Linker_Options.Table (Linker_Options.Last) :=
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491 new String'(Arg);
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492
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493 Binder_Options.Increment_Last;
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494 Binder_Options.Table (Binder_Options.Last) :=
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495 Linker_Options.Table (Linker_Options.Last);
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496
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497 elsif Arg'Length >= 7 and then Arg (1 .. 7) = "--LINK=" then
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498 if Arg'Length = 7 then
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499 Exit_With_Error ("Missing argument for --LINK=");
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500 end if;
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|
501
|
131
|
502 declare
|
|
503 L_Args : constant Argument_List_Access :=
|
|
504 Argument_String_To_List (Arg (8 .. Arg'Last));
|
|
505 begin
|
|
506 -- The linker program is the first argument
|
|
507
|
|
508 Linker_Path :=
|
|
509 System.OS_Lib.Locate_Exec_On_Path (L_Args.all (1).all);
|
|
510
|
|
511 if Linker_Path = null then
|
|
512 Exit_With_Error
|
|
513 ("Could not locate linker: " & L_Args.all (1).all);
|
|
514 end if;
|
111
|
515
|
131
|
516 -- The other arguments are passed as-is to the linker and
|
|
517 -- override those coming from --GCC= if any.
|
|
518
|
|
519 if L_Args.all'Last >= 2 then
|
|
520 Gcc_Linker_Options.Set_Last (0);
|
|
521 end if;
|
|
522
|
|
523 for J in 2 .. L_Args.all'Last loop
|
|
524 Gcc_Linker_Options.Increment_Last;
|
|
525 Gcc_Linker_Options.Table
|
|
526 (Gcc_Linker_Options.Last) :=
|
|
527 new String'(L_Args.all (J).all);
|
|
528 end loop;
|
|
529 end;
|
|
530
|
|
531 elsif Arg'Length >= 6 and then Arg (1 .. 6) = "--GCC=" then
|
|
532 if Arg'Length = 6 then
|
|
533 Exit_With_Error ("Missing argument for --GCC=");
|
111
|
534 end if;
|
|
535
|
|
536 declare
|
|
537 Program_Args : constant Argument_List_Access :=
|
|
538 Argument_String_To_List
|
|
539 (Arg (7 .. Arg'Last));
|
|
540
|
|
541 begin
|
|
542 if Program_Args.all (1).all /= Gcc.all then
|
|
543 Gcc := new String'(Program_Args.all (1).all);
|
|
544 Standard_Gcc := False;
|
|
545 end if;
|
|
546
|
|
547 -- Set appropriate flags for switches passed
|
|
548
|
|
549 for J in 2 .. Program_Args.all'Last loop
|
|
550 declare
|
|
551 Arg : constant String := Program_Args.all (J).all;
|
|
552 AF : constant Integer := Arg'First;
|
|
553
|
|
554 begin
|
|
555 if Arg'Length /= 0 and then Arg (AF) = '-' then
|
|
556 if Arg (AF + 1) = 'g'
|
|
557 and then (Arg'Length = 2
|
|
558 or else Arg (AF + 2) in '0' .. '3'
|
|
559 or else Arg (AF + 2 .. Arg'Last) = "coff")
|
|
560 then
|
|
561 Debug_Flag_Present := True;
|
|
562 end if;
|
|
563 end if;
|
|
564
|
|
565 -- Add directory to source search dirs so that
|
|
566 -- Get_Target_Parameters can find system.ads
|
|
567
|
|
568 if Arg (AF .. AF + 1) = "-I"
|
|
569 and then Arg'Length > 2
|
|
570 then
|
|
571 Add_Src_Search_Dir (Arg (AF + 2 .. Arg'Last));
|
|
572 end if;
|
|
573
|
|
574 -- Pass to gcc for compiling binder generated file
|
|
575 -- No use passing libraries, it will just generate
|
|
576 -- a warning
|
|
577
|
|
578 if not (Arg (AF .. AF + 1) = "-l"
|
|
579 or else Arg (AF .. AF + 1) = "-L")
|
|
580 then
|
|
581 Binder_Options.Increment_Last;
|
|
582 Binder_Options.Table (Binder_Options.Last) :=
|
|
583 new String'(Arg);
|
|
584 end if;
|
|
585
|
|
586 -- Pass to gcc for linking program
|
|
587
|
|
588 Gcc_Linker_Options.Increment_Last;
|
|
589 Gcc_Linker_Options.Table
|
|
590 (Gcc_Linker_Options.Last) := new String'(Arg);
|
|
591 end;
|
|
592 end loop;
|
|
593 end;
|
|
594
|
|
595 -- Send all multi-character switches not recognized as
|
|
596 -- a special case by gnatlink to the linker/loader stage.
|
|
597
|
|
598 else
|
|
599 Linker_Options.Increment_Last;
|
|
600 Linker_Options.Table (Linker_Options.Last) :=
|
|
601 new String'(Arg);
|
|
602 end if;
|
|
603
|
|
604 -- Here if argument is a file name rather than a switch
|
|
605
|
|
606 else
|
|
607 -- If explicit ali file, capture it
|
|
608
|
|
609 if Arg'Length > 4
|
|
610 and then Arg (Arg'Last - 3 .. Arg'Last) = ".ali"
|
|
611 then
|
|
612 if Ali_File_Name = null then
|
|
613 Ali_File_Name := new String'(Arg);
|
|
614 else
|
|
615 Exit_With_Error ("cannot handle more than one ALI file");
|
|
616 end if;
|
|
617
|
|
618 -- If target object file, record object file
|
|
619
|
|
620 elsif Arg'Length > Get_Target_Object_Suffix.all'Length
|
|
621 and then Arg
|
|
622 (Arg'Last -
|
|
623 Get_Target_Object_Suffix.all'Length + 1 .. Arg'Last)
|
|
624 = Get_Target_Object_Suffix.all
|
|
625 then
|
|
626 Linker_Objects.Increment_Last;
|
|
627 Linker_Objects.Table (Linker_Objects.Last) :=
|
|
628 new String'(Arg);
|
|
629
|
|
630 -- If host object file, record object file
|
|
631
|
|
632 elsif Arg'Length > Get_Object_Suffix.all'Length
|
|
633 and then Arg
|
|
634 (Arg'Last - Get_Object_Suffix.all'Length + 1 .. Arg'Last)
|
|
635 = Get_Object_Suffix.all
|
|
636 then
|
|
637 Linker_Objects.Increment_Last;
|
|
638 Linker_Objects.Table (Linker_Objects.Last) :=
|
|
639 new String'(Arg);
|
|
640
|
|
641 -- If corresponding ali file exists, capture it
|
|
642
|
|
643 elsif Ali_File_Name = null
|
|
644 and then Is_Regular_File (Arg & ".ali")
|
|
645 then
|
|
646 Ali_File_Name := new String'(Arg & ".ali");
|
|
647
|
|
648 -- Otherwise assume this is a linker options entry, but
|
|
649 -- see below for interesting adjustment to this assumption.
|
|
650
|
|
651 else
|
|
652 Linker_Options.Increment_Last;
|
|
653 Linker_Options.Table (Linker_Options.Last) :=
|
|
654 new String'(Arg);
|
|
655 end if;
|
|
656 end if;
|
|
657 end Process_One_Arg;
|
|
658
|
|
659 Next_Arg := Next_Arg + 1;
|
|
660 end loop;
|
|
661
|
|
662 -- Compile the bind file with warnings suppressed, because
|
|
663 -- otherwise the with of the main program may cause junk warnings.
|
|
664
|
|
665 Binder_Options.Increment_Last;
|
|
666 Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws");
|
|
667
|
|
668 -- If we did not get an ali file at all, and we had at least one
|
|
669 -- linker option, then assume that was the intended ali file after
|
|
670 -- all, so that we get a nicer message later on.
|
|
671
|
|
672 if Ali_File_Name = null
|
|
673 and then Linker_Options.Last >= Linker_Options.First
|
|
674 then
|
|
675 Ali_File_Name :=
|
|
676 new String'(Linker_Options.Table (Linker_Options.First).all
|
|
677 & ".ali");
|
|
678 end if;
|
|
679 end Process_Args;
|
|
680
|
|
681 -------------------------
|
|
682 -- Process_Binder_File --
|
|
683 -------------------------
|
|
684
|
|
685 procedure Process_Binder_File (Name : String) is
|
|
686 Fd : FILEs;
|
|
687 -- Binder file's descriptor
|
|
688
|
|
689 Link_Bytes : Integer := 0;
|
|
690 -- Projected number of bytes for the linker command line
|
|
691
|
|
692 Link_Max : Integer;
|
|
693 pragma Import (C, Link_Max, "__gnat_link_max");
|
|
694 -- Maximum number of bytes on the command line supported by the OS
|
|
695 -- linker. Passed this limit the response file mechanism must be used
|
|
696 -- if supported.
|
|
697
|
|
698 Next_Line : String (1 .. 1000);
|
|
699 -- Current line value
|
|
700
|
|
701 Nlast : Integer;
|
|
702 Nfirst : Integer;
|
|
703 -- Current line slice (the slice does not contain line terminator)
|
|
704
|
|
705 Last : Integer;
|
|
706 -- Current line last character for shared libraries (without version)
|
|
707
|
|
708 Objs_Begin : Integer := 0;
|
|
709 -- First object file index in Linker_Objects table
|
|
710
|
|
711 Objs_End : Integer := 0;
|
|
712 -- Last object file index in Linker_Objects table
|
|
713
|
|
714 Status : int;
|
|
715 pragma Warnings (Off, Status);
|
|
716 -- Used for various Interfaces.C_Streams calls
|
|
717
|
|
718 Closing_Status : Boolean;
|
|
719 pragma Warnings (Off, Closing_Status);
|
|
720 -- For call to Close
|
|
721
|
|
722 GNAT_Static : Boolean := False;
|
|
723 -- Save state of -static option
|
|
724
|
|
725 GNAT_Shared : Boolean := False;
|
|
726 -- Save state of -shared option
|
|
727
|
|
728 Xlinker_Was_Previous : Boolean := False;
|
|
729 -- Indicate that "-Xlinker" was the option preceding the current option.
|
|
730 -- If True, then the current option is never suppressed.
|
|
731
|
|
732 -- Rollback data
|
|
733
|
|
734 -- These data items are used to store current binder file context. The
|
|
735 -- context is composed of the file descriptor position and the current
|
|
736 -- line together with the slice indexes (first and last position) for
|
|
737 -- this line. The rollback data are used by the Store_File_Context and
|
|
738 -- Rollback_File_Context routines below. The file context mechanism
|
|
739 -- interact only with the Get_Next_Line call. For example:
|
|
740
|
|
741 -- Store_File_Context;
|
|
742 -- Get_Next_Line;
|
|
743 -- Rollback_File_Context;
|
|
744 -- Get_Next_Line;
|
|
745
|
|
746 -- Both Get_Next_Line calls above will read the exact same data from
|
|
747 -- the file. In other words, Next_Line, Nfirst and Nlast variables
|
|
748 -- will be set with the exact same values.
|
|
749
|
|
750 RB_File_Pos : long; -- File position
|
|
751 RB_Next_Line : String (1 .. 1000); -- Current line content
|
|
752 RB_Nlast : Integer; -- Slice last index
|
|
753 RB_Nfirst : Integer; -- Slice first index
|
|
754
|
|
755 Run_Path_Option_Ptr : Interfaces.C.Strings.chars_ptr;
|
|
756 pragma Import (C, Run_Path_Option_Ptr, "__gnat_run_path_option");
|
|
757 -- Pointer to string representing the native linker option which
|
|
758 -- specifies the path where the dynamic loader should find shared
|
|
759 -- libraries. Equal to null string if this system doesn't support it.
|
|
760
|
|
761 Libgcc_Subdir_Ptr : Interfaces.C.Strings.chars_ptr;
|
|
762 pragma Import (C, Libgcc_Subdir_Ptr, "__gnat_default_libgcc_subdir");
|
|
763 -- Pointer to string indicating the installation subdirectory where
|
|
764 -- a default shared libgcc might be found.
|
|
765
|
|
766 Object_Library_Ext_Ptr : Interfaces.C.Strings.chars_ptr;
|
|
767 pragma Import
|
|
768 (C, Object_Library_Ext_Ptr, "__gnat_object_library_extension");
|
|
769 -- Pointer to string specifying the default extension for
|
|
770 -- object libraries, e.g. Unix uses ".a".
|
|
771
|
|
772 Separate_Run_Path_Options : Boolean;
|
|
773 for Separate_Run_Path_Options'Size use Character'Size;
|
|
774 pragma Import
|
|
775 (C, Separate_Run_Path_Options, "__gnat_separate_run_path_options");
|
|
776 -- Whether separate rpath options should be emitted for each directory
|
|
777
|
|
778 procedure Get_Next_Line;
|
|
779 -- Read the next line from the binder file without the line
|
|
780 -- terminator.
|
|
781
|
|
782 function Index (S, Pattern : String) return Natural;
|
|
783 -- Return the last occurrence of Pattern in S, or 0 if none
|
|
784
|
|
785 procedure Store_File_Context;
|
|
786 -- Store current file context, Fd position and current line data.
|
|
787 -- The file context is stored into the rollback data above (RB_*).
|
|
788 -- Store_File_Context can be called at any time, only the last call
|
|
789 -- will be used (i.e. this routine overwrites the file context).
|
|
790
|
|
791 procedure Rollback_File_Context;
|
|
792 -- Restore file context from rollback data. This routine must be called
|
|
793 -- after Store_File_Context. The binder file context will be restored
|
|
794 -- with the data stored by the last Store_File_Context call.
|
|
795
|
|
796 procedure Write_RF (S : String);
|
|
797 -- Write a string to the response file and check if it was successful.
|
|
798 -- Fail the program if it was not successful (disk full).
|
|
799
|
|
800 -------------------
|
|
801 -- Get_Next_Line --
|
|
802 -------------------
|
|
803
|
|
804 procedure Get_Next_Line is
|
|
805 Fchars : chars;
|
|
806
|
|
807 begin
|
|
808 Fchars := fgets (Next_Line'Address, Next_Line'Length, Fd);
|
|
809
|
|
810 if Fchars = System.Null_Address then
|
|
811 Exit_With_Error ("Error reading binder output");
|
|
812 end if;
|
|
813
|
|
814 Nfirst := Next_Line'First;
|
|
815 Nlast := Nfirst;
|
|
816 while Nlast <= Next_Line'Last
|
|
817 and then Next_Line (Nlast) /= ASCII.LF
|
|
818 and then Next_Line (Nlast) /= ASCII.CR
|
|
819 loop
|
|
820 Nlast := Nlast + 1;
|
|
821 end loop;
|
|
822
|
|
823 Nlast := Nlast - 1;
|
|
824 end Get_Next_Line;
|
|
825
|
|
826 -----------
|
|
827 -- Index --
|
|
828 -----------
|
|
829
|
|
830 function Index (S, Pattern : String) return Natural is
|
|
831 Len : constant Natural := Pattern'Length;
|
|
832
|
|
833 begin
|
|
834 for J in reverse S'First .. S'Last - Len + 1 loop
|
|
835 if Pattern = S (J .. J + Len - 1) then
|
|
836 return J;
|
|
837 end if;
|
|
838 end loop;
|
|
839
|
|
840 return 0;
|
|
841 end Index;
|
|
842
|
|
843 ---------------------------
|
|
844 -- Rollback_File_Context --
|
|
845 ---------------------------
|
|
846
|
|
847 procedure Rollback_File_Context is
|
|
848 begin
|
|
849 Next_Line := RB_Next_Line;
|
|
850 Nfirst := RB_Nfirst;
|
|
851 Nlast := RB_Nlast;
|
|
852 Status := fseek (Fd, RB_File_Pos, Interfaces.C_Streams.SEEK_SET);
|
|
853
|
|
854 if Status = -1 then
|
|
855 Exit_With_Error ("Error setting file position");
|
|
856 end if;
|
|
857 end Rollback_File_Context;
|
|
858
|
|
859 ------------------------
|
|
860 -- Store_File_Context --
|
|
861 ------------------------
|
|
862
|
|
863 procedure Store_File_Context is
|
|
864 use type System.CRTL.long;
|
|
865
|
|
866 begin
|
|
867 RB_Next_Line := Next_Line;
|
|
868 RB_Nfirst := Nfirst;
|
|
869 RB_Nlast := Nlast;
|
|
870 RB_File_Pos := ftell (Fd);
|
|
871
|
|
872 if RB_File_Pos = -1 then
|
|
873 Exit_With_Error ("Error getting file position");
|
|
874 end if;
|
|
875 end Store_File_Context;
|
|
876
|
|
877 --------------
|
|
878 -- Write_RF --
|
|
879 --------------
|
|
880
|
|
881 procedure Write_RF (S : String) is
|
|
882 Success : Boolean := True;
|
|
883 Back_Slash : constant Character := '\';
|
|
884
|
|
885 begin
|
|
886 -- If a GNU response file is used, space and backslash need to be
|
|
887 -- escaped because they are interpreted as a string separator and
|
|
888 -- an escape character respectively by the underlying mechanism.
|
|
889 -- On the other hand, quote and double-quote are not escaped since
|
|
890 -- they are interpreted as string delimiters on both sides.
|
|
891
|
|
892 if Using_GNU_response_file then
|
|
893 for J in S'Range loop
|
|
894 if S (J) = ' ' or else S (J) = '\' then
|
|
895 if Write (Tname_FD, Back_Slash'Address, 1) /= 1 then
|
|
896 Success := False;
|
|
897 end if;
|
|
898 end if;
|
|
899
|
|
900 if Write (Tname_FD, S (J)'Address, 1) /= 1 then
|
|
901 Success := False;
|
|
902 end if;
|
|
903 end loop;
|
|
904
|
|
905 else
|
|
906 if Write (Tname_FD, S'Address, S'Length) /= S'Length then
|
|
907 Success := False;
|
|
908 end if;
|
|
909 end if;
|
|
910
|
|
911 if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then
|
|
912 Success := False;
|
|
913 end if;
|
|
914
|
|
915 if not Success then
|
|
916 Exit_With_Error ("Error generating response file: disk full");
|
|
917 end if;
|
|
918 end Write_RF;
|
|
919
|
|
920 -- Start of processing for Process_Binder_File
|
|
921
|
|
922 begin
|
|
923 Fd := fopen (Name'Address, Read_Mode'Address);
|
|
924
|
|
925 if Fd = NULL_Stream then
|
|
926 Exit_With_Error ("Failed to open binder output");
|
|
927 end if;
|
|
928
|
|
929 -- Skip up to the Begin Info line
|
|
930
|
|
931 loop
|
|
932 Get_Next_Line;
|
|
933 exit when Next_Line (Nfirst .. Nlast) = Begin_Info;
|
|
934 end loop;
|
|
935
|
|
936 loop
|
|
937 Get_Next_Line;
|
|
938
|
|
939 -- Go to end when end line is reached (this will happen in
|
|
940 -- High_Integrity_Mode where no -L switches are generated)
|
|
941
|
|
942 exit when Next_Line (Nfirst .. Nlast) = End_Info;
|
|
943
|
|
944 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
|
|
945 Nlast := Nlast - 8;
|
|
946
|
|
947 -- Go to next section when switches are reached
|
|
948
|
|
949 exit when Next_Line (1) = '-';
|
|
950
|
|
951 -- Otherwise we have another object file to collect
|
|
952
|
|
953 Linker_Objects.Increment_Last;
|
|
954
|
|
955 -- Mark the positions of first and last object files in case they
|
|
956 -- need to be placed with a named file on systems having linker
|
|
957 -- line limitations.
|
|
958
|
|
959 if Objs_Begin = 0 then
|
|
960 Objs_Begin := Linker_Objects.Last;
|
|
961 end if;
|
|
962
|
|
963 Linker_Objects.Table (Linker_Objects.Last) :=
|
|
964 new String'(Next_Line (Nfirst .. Nlast));
|
|
965
|
|
966 -- Nlast - Nfirst + 1, for the size, plus one for the space between
|
|
967 -- each arguments.
|
|
968
|
|
969 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
|
|
970 end loop;
|
|
971
|
|
972 Objs_End := Linker_Objects.Last;
|
|
973
|
|
974 -- Continue to compute the Link_Bytes, the linker options are part of
|
|
975 -- command line length.
|
|
976
|
|
977 Store_File_Context;
|
|
978
|
|
979 while Next_Line (Nfirst .. Nlast) /= End_Info loop
|
|
980 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
|
|
981 Get_Next_Line;
|
|
982 end loop;
|
|
983
|
|
984 Rollback_File_Context;
|
|
985
|
|
986 -- On systems that have limitations on handling very long linker lines
|
|
987 -- we make use of the system linker option which takes a list of object
|
|
988 -- file names from a file instead of the command line itself. What we do
|
|
989 -- is to replace the list of object files by the special linker option
|
|
990 -- which then reads the object file list from a file instead. The option
|
|
991 -- to read from a file instead of the command line is only triggered if
|
|
992 -- a conservative threshold is passed.
|
|
993
|
|
994 if Object_List_File_Required
|
|
995 or else (Object_List_File_Supported
|
|
996 and then Link_Bytes > Link_Max)
|
|
997 then
|
|
998 -- Create a temporary file containing the Ada user object files
|
|
999 -- needed by the link. This list is taken from the bind file and is
|
|
1000 -- output one object per line for maximal compatibility with linkers
|
|
1001 -- supporting this option.
|
|
1002
|
|
1003 Create_Temp_File (Tname_FD, Tname);
|
|
1004
|
|
1005 -- ??? File descriptor should be checked to not be Invalid_FD.
|
|
1006 -- ??? Status of Write and Close operations should be checked, and
|
|
1007 -- failure should occur if a status is wrong.
|
|
1008
|
|
1009 for J in Objs_Begin .. Objs_End loop
|
|
1010 Write_RF (Linker_Objects.Table (J).all);
|
|
1011
|
|
1012 Response_File_Objects.Increment_Last;
|
|
1013 Response_File_Objects.Table (Response_File_Objects.Last) :=
|
|
1014 Linker_Objects.Table (J);
|
|
1015 end loop;
|
|
1016
|
|
1017 Close (Tname_FD, Closing_Status);
|
|
1018
|
|
1019 -- Add the special objects list file option together with the name
|
|
1020 -- of the temporary file (removing the null character) to the objects
|
|
1021 -- file table.
|
|
1022
|
|
1023 Linker_Objects.Table (Objs_Begin) :=
|
|
1024 new String'(Object_File_Option &
|
|
1025 Tname (Tname'First .. Tname'Last - 1));
|
|
1026
|
|
1027 -- The slots containing these object file names are then removed
|
|
1028 -- from the objects table so they do not appear in the link. They are
|
|
1029 -- removed by moving up the linker options and non-Ada object files
|
|
1030 -- appearing after the Ada object list in the table.
|
|
1031
|
|
1032 declare
|
|
1033 N : Integer;
|
|
1034
|
|
1035 begin
|
|
1036 N := Objs_End - Objs_Begin + 1;
|
|
1037
|
|
1038 for J in Objs_End + 1 .. Linker_Objects.Last loop
|
|
1039 Linker_Objects.Table (J - N + 1) := Linker_Objects.Table (J);
|
|
1040 end loop;
|
|
1041
|
|
1042 Linker_Objects.Set_Last (Linker_Objects.Last - N + 1);
|
|
1043 end;
|
|
1044 end if;
|
|
1045
|
|
1046 -- Process switches and options
|
|
1047
|
|
1048 if Next_Line (Nfirst .. Nlast) /= End_Info then
|
|
1049 Xlinker_Was_Previous := False;
|
|
1050
|
|
1051 loop
|
|
1052 if Xlinker_Was_Previous
|
|
1053 or else Next_Line (Nfirst .. Nlast) = "-Xlinker"
|
|
1054 then
|
|
1055 Linker_Options.Increment_Last;
|
|
1056 Linker_Options.Table (Linker_Options.Last) :=
|
|
1057 new String'(Next_Line (Nfirst .. Nlast));
|
|
1058
|
|
1059 elsif Next_Line (Nfirst .. Nlast) = "-static" then
|
|
1060 GNAT_Static := True;
|
|
1061
|
|
1062 elsif Next_Line (Nfirst .. Nlast) = "-shared" then
|
|
1063 GNAT_Shared := True;
|
|
1064
|
|
1065 -- Add binder options only if not already set on the command line.
|
|
1066 -- This rule is a way to control the linker options order.
|
|
1067
|
|
1068 else
|
|
1069 if Nlast > Nfirst + 2 and then
|
|
1070 Next_Line (Nfirst .. Nfirst + 1) = "-L"
|
|
1071 then
|
|
1072 -- Construct a library search path for use later to locate
|
|
1073 -- static gnatlib libraries.
|
|
1074
|
|
1075 if Libpath.Last > 1 then
|
|
1076 Libpath.Increment_Last;
|
|
1077 Libpath.Table (Libpath.Last) := Path_Separator;
|
|
1078 end if;
|
|
1079
|
|
1080 for I in Nfirst + 2 .. Nlast loop
|
|
1081 Libpath.Increment_Last;
|
|
1082 Libpath.Table (Libpath.Last) := Next_Line (I);
|
|
1083 end loop;
|
|
1084
|
|
1085 Linker_Options.Increment_Last;
|
|
1086
|
|
1087 Linker_Options.Table (Linker_Options.Last) :=
|
|
1088 new String'(Next_Line (Nfirst .. Nlast));
|
|
1089
|
|
1090 elsif Next_Line (Nfirst .. Nlast) = "-lgnarl"
|
|
1091 or else Next_Line (Nfirst .. Nlast) = "-lgnat"
|
|
1092 or else
|
|
1093 Next_Line
|
|
1094 (1 .. Natural'Min (Nlast, 8 + Library_Version'Length)) =
|
|
1095 Shared_Lib ("gnarl")
|
|
1096 or else
|
|
1097 Next_Line
|
|
1098 (1 .. Natural'Min (Nlast, 7 + Library_Version'Length)) =
|
|
1099 Shared_Lib ("gnat")
|
|
1100 then
|
|
1101 -- If it is a shared library, remove the library version.
|
|
1102 -- We will be looking for the static version of the library
|
|
1103 -- as it is in the same directory as the shared version.
|
|
1104
|
131
|
1105 if Nlast >= Library_Version'Length
|
|
1106 and then
|
|
1107 Next_Line (Nlast - Library_Version'Length + 1 .. Nlast) =
|
|
1108 Library_Version
|
111
|
1109 then
|
|
1110 -- Set Last to point to last character before the
|
|
1111 -- library version.
|
|
1112
|
|
1113 Last := Nlast - Library_Version'Length - 1;
|
|
1114 else
|
|
1115 Last := Nlast;
|
|
1116 end if;
|
|
1117
|
|
1118 -- Given a Gnat standard library, search the library path to
|
|
1119 -- find the library location.
|
|
1120
|
|
1121 -- Shouldn't we abstract a proc here, we are getting awfully
|
|
1122 -- heavily nested ???
|
|
1123
|
|
1124 declare
|
|
1125 File_Path : String_Access;
|
|
1126
|
|
1127 Object_Lib_Extension : constant String :=
|
|
1128 Value (Object_Library_Ext_Ptr);
|
|
1129
|
|
1130 File_Name : constant String := "lib" &
|
|
1131 Next_Line (Nfirst + 2 .. Last) & Object_Lib_Extension;
|
|
1132
|
|
1133 Run_Path_Opt : constant String :=
|
|
1134 Value (Run_Path_Option_Ptr);
|
|
1135
|
|
1136 GCC_Index : Natural;
|
|
1137 Run_Path_Opt_Index : Natural := 0;
|
|
1138
|
|
1139 begin
|
|
1140 File_Path :=
|
|
1141 Locate_Regular_File (File_Name,
|
|
1142 String (Libpath.Table (1 .. Libpath.Last)));
|
|
1143
|
|
1144 if File_Path /= null then
|
|
1145 if GNAT_Static then
|
|
1146
|
|
1147 -- If static gnatlib found, explicitly specify to
|
|
1148 -- overcome possible linker default usage of shared
|
|
1149 -- version.
|
|
1150
|
|
1151 Linker_Options.Increment_Last;
|
|
1152
|
|
1153 Linker_Options.Table (Linker_Options.Last) :=
|
|
1154 new String'(File_Path.all);
|
|
1155
|
|
1156 elsif GNAT_Shared then
|
|
1157 if Opt.Run_Path_Option then
|
|
1158
|
|
1159 -- If shared gnatlib desired, add appropriate
|
|
1160 -- system specific switch so that it can be
|
|
1161 -- located at runtime.
|
|
1162
|
|
1163 if Run_Path_Opt'Length /= 0 then
|
|
1164
|
|
1165 -- Output the system specific linker command
|
|
1166 -- that allows the image activator to find
|
|
1167 -- the shared library at runtime. Also add
|
|
1168 -- path to find libgcc_s.so, if relevant.
|
|
1169
|
|
1170 declare
|
|
1171 Path : String (1 .. File_Path'Length + 15);
|
|
1172
|
|
1173 Path_Last : constant Natural :=
|
|
1174 File_Path'Length;
|
|
1175
|
|
1176 begin
|
|
1177 Path (1 .. File_Path'Length) :=
|
|
1178 File_Path.all;
|
|
1179
|
|
1180 -- To find the location of the shared version
|
|
1181 -- of libgcc, we look for "gcc-lib" in the
|
|
1182 -- path of the library. However, this
|
|
1183 -- subdirectory is no longer present in
|
|
1184 -- recent versions of GCC. So, we look for
|
|
1185 -- the last subdirectory "lib" in the path.
|
|
1186
|
|
1187 GCC_Index :=
|
|
1188 Index (Path (1 .. Path_Last), "gcc-lib");
|
|
1189
|
|
1190 if GCC_Index /= 0 then
|
|
1191
|
|
1192 -- The shared version of libgcc is
|
|
1193 -- located in the parent directory.
|
|
1194
|
|
1195 GCC_Index := GCC_Index - 1;
|
|
1196
|
|
1197 else
|
|
1198 GCC_Index :=
|
|
1199 Index
|
|
1200 (Path (1 .. Path_Last),
|
|
1201 "/lib/");
|
|
1202
|
|
1203 if GCC_Index = 0 then
|
|
1204 GCC_Index :=
|
|
1205 Index (Path (1 .. Path_Last),
|
|
1206 Directory_Separator & "lib"
|
|
1207 & Directory_Separator);
|
|
1208 end if;
|
|
1209
|
|
1210 -- If we have found a "lib" subdir in
|
|
1211 -- the path to libgnat, the possible
|
|
1212 -- shared libgcc of interest by default
|
|
1213 -- is in libgcc_subdir at the same
|
|
1214 -- level.
|
|
1215
|
|
1216 if GCC_Index /= 0 then
|
|
1217 declare
|
|
1218 Subdir : constant String :=
|
|
1219 Value (Libgcc_Subdir_Ptr);
|
|
1220 begin
|
|
1221 Path
|
|
1222 (GCC_Index + 1 ..
|
|
1223 GCC_Index + Subdir'Length) :=
|
|
1224 Subdir;
|
|
1225 GCC_Index :=
|
|
1226 GCC_Index + Subdir'Length;
|
|
1227 end;
|
|
1228 end if;
|
|
1229 end if;
|
|
1230
|
|
1231 -- Look for an eventual run_path_option in
|
|
1232 -- the linker switches.
|
|
1233
|
|
1234 if Separate_Run_Path_Options then
|
|
1235 Linker_Options.Increment_Last;
|
|
1236 Linker_Options.Table
|
|
1237 (Linker_Options.Last) :=
|
|
1238 new String'
|
|
1239 (Run_Path_Opt
|
|
1240 & File_Path
|
|
1241 (1 .. File_Path'Length
|
|
1242 - File_Name'Length));
|
|
1243
|
|
1244 if GCC_Index /= 0 then
|
|
1245 Linker_Options.Increment_Last;
|
|
1246 Linker_Options.Table
|
|
1247 (Linker_Options.Last) :=
|
|
1248 new String'
|
|
1249 (Run_Path_Opt
|
|
1250 & Path (1 .. GCC_Index));
|
|
1251 end if;
|
|
1252
|
|
1253 else
|
|
1254 for J in reverse
|
|
1255 1 .. Linker_Options.Last
|
|
1256 loop
|
|
1257 if Linker_Options.Table (J) /= null
|
|
1258 and then
|
|
1259 Linker_Options.Table (J)'Length
|
|
1260 > Run_Path_Opt'Length
|
|
1261 and then
|
|
1262 Linker_Options.Table (J)
|
|
1263 (1 .. Run_Path_Opt'Length) =
|
|
1264 Run_Path_Opt
|
|
1265 then
|
|
1266 -- We have found an already
|
|
1267 -- specified run_path_option:
|
|
1268 -- we will add to this
|
|
1269 -- switch, because only one
|
|
1270 -- run_path_option should be
|
|
1271 -- specified.
|
|
1272
|
|
1273 Run_Path_Opt_Index := J;
|
|
1274 exit;
|
|
1275 end if;
|
|
1276 end loop;
|
|
1277
|
|
1278 -- If there is no run_path_option, we
|
|
1279 -- need to add one.
|
|
1280
|
|
1281 if Run_Path_Opt_Index = 0 then
|
|
1282 Linker_Options.Increment_Last;
|
|
1283 end if;
|
|
1284
|
|
1285 if GCC_Index = 0 then
|
|
1286 if Run_Path_Opt_Index = 0 then
|
|
1287 Linker_Options.Table
|
|
1288 (Linker_Options.Last) :=
|
|
1289 new String'
|
|
1290 (Run_Path_Opt
|
|
1291 & File_Path
|
|
1292 (1 .. File_Path'Length
|
|
1293 - File_Name'Length));
|
|
1294
|
|
1295 else
|
|
1296 Linker_Options.Table
|
|
1297 (Run_Path_Opt_Index) :=
|
|
1298 new String'
|
|
1299 (Linker_Options.Table
|
|
1300 (Run_Path_Opt_Index).all
|
|
1301 & Path_Separator
|
|
1302 & File_Path
|
|
1303 (1 .. File_Path'Length
|
|
1304 - File_Name'Length));
|
|
1305 end if;
|
|
1306
|
|
1307 else
|
|
1308 if Run_Path_Opt_Index = 0 then
|
|
1309 Linker_Options.Table
|
|
1310 (Linker_Options.Last) :=
|
|
1311 new String'
|
|
1312 (Run_Path_Opt
|
|
1313 & File_Path
|
|
1314 (1 .. File_Path'Length
|
|
1315 - File_Name'Length)
|
|
1316 & Path_Separator
|
|
1317 & Path (1 .. GCC_Index));
|
|
1318
|
|
1319 else
|
|
1320 Linker_Options.Table
|
|
1321 (Run_Path_Opt_Index) :=
|
|
1322 new String'
|
|
1323 (Linker_Options.Table
|
|
1324 (Run_Path_Opt_Index).all
|
|
1325 & Path_Separator
|
|
1326 & File_Path
|
|
1327 (1 .. File_Path'Length
|
|
1328 - File_Name'Length)
|
|
1329 & Path_Separator
|
|
1330 & Path (1 .. GCC_Index));
|
|
1331 end if;
|
|
1332 end if;
|
|
1333 end if;
|
|
1334 end;
|
|
1335 end if;
|
|
1336 end if;
|
|
1337
|
|
1338 -- Then we add the appropriate -l switch
|
|
1339
|
|
1340 Linker_Options.Increment_Last;
|
|
1341 Linker_Options.Table (Linker_Options.Last) :=
|
|
1342 new String'(Next_Line (Nfirst .. Nlast));
|
|
1343 end if;
|
|
1344
|
|
1345 else
|
|
1346 -- If gnatlib library not found, then add it anyway in
|
|
1347 -- case some other mechanism may find it.
|
|
1348
|
|
1349 Linker_Options.Increment_Last;
|
|
1350 Linker_Options.Table (Linker_Options.Last) :=
|
|
1351 new String'(Next_Line (Nfirst .. Nlast));
|
|
1352 end if;
|
|
1353 end;
|
|
1354 else
|
|
1355 Linker_Options.Increment_Last;
|
|
1356 Linker_Options.Table (Linker_Options.Last) :=
|
|
1357 new String'(Next_Line (Nfirst .. Nlast));
|
|
1358 end if;
|
|
1359 end if;
|
|
1360
|
|
1361 Xlinker_Was_Previous := Next_Line (Nfirst .. Nlast) = "-Xlinker";
|
|
1362
|
|
1363 Get_Next_Line;
|
|
1364 exit when Next_Line (Nfirst .. Nlast) = End_Info;
|
|
1365
|
|
1366 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
|
|
1367 Nlast := Nlast - 8;
|
|
1368 end loop;
|
|
1369 end if;
|
|
1370
|
|
1371 -- If -shared was specified, invoke gcc with -shared-libgcc
|
|
1372
|
|
1373 if GNAT_Shared then
|
|
1374 Linker_Options.Increment_Last;
|
|
1375 Linker_Options.Table (Linker_Options.Last) := Shared_Libgcc;
|
|
1376 end if;
|
|
1377
|
|
1378 Status := fclose (Fd);
|
|
1379 end Process_Binder_File;
|
|
1380
|
|
1381 -----------
|
|
1382 -- Usage --
|
|
1383 -----------
|
|
1384
|
|
1385 procedure Usage is
|
|
1386 begin
|
|
1387 Write_Str ("Usage: ");
|
|
1388 Write_Str (Base_Command_Name.all);
|
|
1389 Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]");
|
|
1390 Write_Eol;
|
|
1391 Write_Eol;
|
|
1392 Write_Line (" mainprog.ali the ALI file of the main program");
|
|
1393 Write_Eol;
|
|
1394 Write_Eol;
|
|
1395 Display_Usage_Version_And_Help;
|
|
1396 Write_Line (" -f Force object file list to be generated");
|
|
1397 Write_Line (" -g Compile binder source file with debug information");
|
|
1398 Write_Line (" -n Do not compile the binder source file");
|
|
1399 Write_Line (" -P Process files for use by CodePeer");
|
|
1400 Write_Line (" -R Do not use a run_path_option");
|
|
1401 Write_Line (" -v Verbose mode");
|
|
1402 Write_Line (" -v -v Very verbose mode");
|
|
1403 Write_Eol;
|
|
1404 Write_Line (" -o nam Use 'nam' as the name of the executable");
|
|
1405 Write_Line (" -Bdir Load compiler executables from dir");
|
|
1406
|
|
1407 if Is_Supported (Map_File) then
|
|
1408 Write_Line (" -Mmap Create map file map");
|
|
1409 Write_Line (" -M Create map file mainprog.map");
|
|
1410 end if;
|
|
1411
|
131
|
1412 Write_Line (" --GCC=comp Use 'comp' as the compiler rather than 'gcc'");
|
|
1413 Write_Line (" --LINK=lnk Use 'lnk' as the linker rather than 'gcc'");
|
111
|
1414 Write_Eol;
|
|
1415 Write_Line (" [non-Ada-objects] list of non Ada object files");
|
|
1416 Write_Line (" [linker-options] other options for the linker");
|
|
1417 end Usage;
|
|
1418
|
|
1419 ------------------
|
|
1420 -- Write_Header --
|
|
1421 ------------------
|
|
1422
|
|
1423 procedure Write_Header is
|
|
1424 begin
|
|
1425 if Verbose_Mode then
|
|
1426 Write_Eol;
|
|
1427 Display_Version ("GNATLINK", "1995");
|
|
1428 end if;
|
|
1429 end Write_Header;
|
|
1430
|
|
1431 -----------------
|
|
1432 -- Write_Usage --
|
|
1433 -----------------
|
|
1434
|
|
1435 procedure Write_Usage is
|
|
1436 begin
|
|
1437 Write_Header;
|
|
1438 Usage;
|
|
1439 end Write_Usage;
|
|
1440
|
|
1441 -- Start of processing for Gnatlink
|
|
1442
|
|
1443 begin
|
|
1444 -- Add the directory where gnatlink is invoked in front of the path, if
|
|
1445 -- gnatlink is invoked with directory information.
|
|
1446
|
|
1447 declare
|
|
1448 Command : constant String := Command_Name;
|
|
1449 begin
|
|
1450 for Index in reverse Command'Range loop
|
|
1451 if Command (Index) = Directory_Separator then
|
|
1452 declare
|
|
1453 Absolute_Dir : constant String :=
|
|
1454 Normalize_Pathname
|
|
1455 (Command (Command'First .. Index));
|
|
1456
|
|
1457 PATH : constant String :=
|
|
1458 Absolute_Dir &
|
|
1459 Path_Separator &
|
|
1460 Getenv ("PATH").all;
|
|
1461
|
|
1462 begin
|
|
1463 Setenv ("PATH", PATH);
|
|
1464 end;
|
|
1465
|
|
1466 exit;
|
|
1467 end if;
|
|
1468 end loop;
|
|
1469 end;
|
|
1470
|
|
1471 Base_Command_Name := new String'(Base_Name (Command_Name));
|
|
1472 Process_Args;
|
|
1473
|
|
1474 if Argument_Count = 0
|
|
1475 or else (Verbose_Mode and then Argument_Count = 1)
|
|
1476 then
|
|
1477 Write_Usage;
|
|
1478 Exit_Program (E_Fatal);
|
|
1479 end if;
|
|
1480
|
|
1481 -- Initialize packages to be used
|
|
1482
|
|
1483 Csets.Initialize;
|
|
1484 Snames.Initialize;
|
|
1485
|
|
1486 -- We always compile with -c
|
|
1487
|
|
1488 Binder_Options_From_ALI.Increment_Last;
|
|
1489 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
1490 new String'("-c");
|
|
1491
|
|
1492 if Ali_File_Name = null then
|
|
1493 Exit_With_Error ("no ali file given for link");
|
|
1494 end if;
|
|
1495
|
|
1496 if not Is_Regular_File (Ali_File_Name.all) then
|
|
1497 Exit_With_Error (Ali_File_Name.all & " not found");
|
|
1498 end if;
|
|
1499
|
|
1500 -- Read the ALI file of the main subprogram if the binder generated file
|
|
1501 -- needs to be compiled and no --GCC= switch has been specified. Fetch the
|
|
1502 -- back end switches from this ALI file and use these switches to compile
|
|
1503 -- the binder generated file
|
|
1504
|
|
1505 if Compile_Bind_File and then Standard_Gcc then
|
|
1506 Initialize_ALI;
|
|
1507 Name_Len := Ali_File_Name'Length;
|
|
1508 Name_Buffer (1 .. Name_Len) := Ali_File_Name.all;
|
|
1509
|
|
1510 declare
|
|
1511 use Types;
|
|
1512 F : constant File_Name_Type := Name_Find;
|
|
1513 T : Text_Buffer_Ptr;
|
|
1514 A : ALI_Id;
|
|
1515
|
|
1516 begin
|
|
1517 -- Load the ALI file
|
|
1518
|
|
1519 T := Read_Library_Info (F, True);
|
|
1520
|
|
1521 -- Read it. Note that we ignore errors, since we only want very
|
|
1522 -- limited information from the ali file, and likely a slightly
|
|
1523 -- wrong version will be just fine, though in normal operation
|
|
1524 -- we don't expect this to happen.
|
|
1525
|
|
1526 A := Scan_ALI
|
|
1527 (F,
|
|
1528 T,
|
|
1529 Ignore_ED => False,
|
|
1530 Err => False,
|
|
1531 Ignore_Errors => True);
|
|
1532
|
|
1533 if A /= No_ALI_Id then
|
|
1534 for
|
|
1535 Index in Units.Table (ALIs.Table (A).First_Unit).First_Arg ..
|
|
1536 Units.Table (ALIs.Table (A).First_Unit).Last_Arg
|
|
1537 loop
|
|
1538 -- Do not compile with the front end switches. However, --RTS
|
|
1539 -- is to be dealt with specially because it needs to be passed
|
|
1540 -- to compile the file generated by the binder.
|
|
1541
|
|
1542 declare
|
|
1543 Arg : String_Ptr renames Args.Table (Index);
|
|
1544 begin
|
|
1545 if not Is_Front_End_Switch (Arg.all) then
|
|
1546 Binder_Options_From_ALI.Increment_Last;
|
|
1547 Binder_Options_From_ALI.Table
|
|
1548 (Binder_Options_From_ALI.Last) := String_Access (Arg);
|
|
1549
|
|
1550 -- GNAT doesn't support GCC's multilib mechanism when it
|
|
1551 -- is configured with --disable-libada. This means that,
|
|
1552 -- when a multilib switch is used to request a particular
|
|
1553 -- compilation mode, the corresponding --RTS switch must
|
|
1554 -- also be specified. It is convenient to eliminate the
|
|
1555 -- redundancy by keying the compilation mode on a single
|
|
1556 -- switch, namely --RTS, and have the compiler reinstate
|
|
1557 -- the multilib switch (see gcc-interface/lang-specs.h).
|
|
1558 -- This switch must be passed to the driver at link time.
|
|
1559
|
|
1560 if Arg'Length = 5
|
|
1561 and then Arg (Arg'First + 1 .. Arg'First + 4) = "mrtp"
|
|
1562 then
|
|
1563 Linker_Options.Increment_Last;
|
|
1564 Linker_Options.Table
|
|
1565 (Linker_Options.Last) := String_Access (Arg);
|
|
1566 end if;
|
|
1567
|
|
1568 elsif Arg'Length > 5
|
|
1569 and then Arg (Arg'First + 2 .. Arg'First + 5) = "RTS="
|
|
1570 then
|
|
1571 Binder_Options_From_ALI.Increment_Last;
|
|
1572 Binder_Options_From_ALI.Table
|
|
1573 (Binder_Options_From_ALI.Last) := String_Access (Arg);
|
|
1574
|
|
1575 -- Set the RTS_*_Path_Name variables, so that
|
|
1576 -- the correct directories will be set when
|
|
1577 -- Osint.Add_Default_Search_Dirs will be called later.
|
|
1578
|
|
1579 Opt.RTS_Src_Path_Name :=
|
|
1580 Get_RTS_Search_Dir
|
|
1581 (Arg (Arg'First + 6 .. Arg'Last), Include);
|
|
1582
|
|
1583 Opt.RTS_Lib_Path_Name :=
|
|
1584 Get_RTS_Search_Dir
|
|
1585 (Arg (Arg'First + 6 .. Arg'Last), Objects);
|
|
1586 end if;
|
|
1587 end;
|
|
1588 end loop;
|
|
1589 end if;
|
|
1590 end;
|
|
1591 end if;
|
|
1592
|
|
1593 -- Get target parameters
|
|
1594
|
|
1595 Osint.Add_Default_Search_Dirs;
|
|
1596 Targparm.Get_Target_Parameters;
|
|
1597
|
|
1598 -- Compile the bind file with the following switches:
|
|
1599
|
|
1600 -- -gnatA stops reading gnat.adc, since we don't know what
|
|
1601 -- pragmas would work, and we do not need it anyway.
|
|
1602
|
|
1603 -- -gnatWb allows brackets coding for wide characters
|
|
1604
|
|
1605 -- -gnatiw allows wide characters in identifiers. This is needed
|
|
1606 -- because bindgen uses brackets encoding for all upper
|
|
1607 -- half and wide characters in identifier names.
|
|
1608
|
|
1609 -- In addition, in CodePeer mode compile with -x adascil -gnatcC
|
|
1610
|
|
1611 Binder_Options_From_ALI.Increment_Last;
|
|
1612 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
1613 new String'("-gnatA");
|
|
1614 Binder_Options_From_ALI.Increment_Last;
|
|
1615 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
1616 new String'("-gnatWb");
|
|
1617 Binder_Options_From_ALI.Increment_Last;
|
|
1618 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
1619 new String'("-gnatiw");
|
|
1620
|
|
1621 if Opt.CodePeer_Mode then
|
|
1622 Binder_Options_From_ALI.Increment_Last;
|
|
1623 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
1624 new String'("-x");
|
|
1625 Binder_Options_From_ALI.Increment_Last;
|
|
1626 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
1627 new String'("adascil");
|
|
1628 Binder_Options_From_ALI.Increment_Last;
|
|
1629 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
1630 new String'("-gnatcC");
|
|
1631 end if;
|
|
1632
|
|
1633 -- Locate all the necessary programs and verify required files are present
|
|
1634
|
|
1635 Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all);
|
|
1636
|
|
1637 if Gcc_Path = null then
|
|
1638 Exit_With_Error ("Couldn't locate " & Gcc.all);
|
|
1639 end if;
|
|
1640
|
|
1641 if Linker_Path = null then
|
|
1642 Linker_Path := Gcc_Path;
|
|
1643 end if;
|
|
1644
|
|
1645 Write_Header;
|
|
1646
|
|
1647 Target_Debuggable_Suffix := Get_Target_Debuggable_Suffix;
|
|
1648
|
|
1649 -- If no output name specified, then use the base name of .ali file name
|
|
1650
|
|
1651 if Output_File_Name = null then
|
|
1652 Output_File_Name :=
|
|
1653 new String'(Base_Name (Ali_File_Name.all)
|
|
1654 & Target_Debuggable_Suffix.all);
|
|
1655 end if;
|
|
1656
|
|
1657 Linker_Options.Increment_Last;
|
|
1658 Linker_Options.Table (Linker_Options.Last) := new String'("-o");
|
|
1659
|
|
1660 Linker_Options.Increment_Last;
|
|
1661 Linker_Options.Table (Linker_Options.Last) :=
|
|
1662 new String'(Output_File_Name.all);
|
|
1663
|
|
1664 Check_Existing_Executable (Output_File_Name.all);
|
|
1665
|
|
1666 -- Warn if main program is called "test", as that may be a built-in command
|
|
1667 -- on Unix. On non-Unix systems executables have a suffix, so the warning
|
|
1668 -- will not appear. However, do not warn in the case of a cross compiler.
|
|
1669
|
|
1670 -- Assume this is a cross tool if the executable name is not gnatlink.
|
|
1671 -- Note that the executable name is also gnatlink on windows, but in that
|
|
1672 -- case the output file name will be test.exe rather than test.
|
|
1673
|
|
1674 if Base_Command_Name.all = "gnatlink"
|
|
1675 and then Output_File_Name.all = "test"
|
|
1676 then
|
|
1677 Error_Msg ("warning: executable name """ & Output_File_Name.all
|
|
1678 & """ may conflict with shell command");
|
|
1679 end if;
|
|
1680
|
|
1681 -- Special warnings for worrisome file names on windows
|
|
1682
|
|
1683 -- Recent versions of Windows by default cause privilege escalation if an
|
|
1684 -- executable file name contains substrings "install", "setup", "update"
|
|
1685 -- or "patch". A console application will typically fail to load as a
|
|
1686 -- result, so we should warn the user.
|
|
1687
|
|
1688 Bad_File_Names_On_Windows : declare
|
|
1689 FN : String := Output_File_Name.all;
|
|
1690
|
|
1691 procedure Check_File_Name (S : String);
|
|
1692 -- Warn if file name has the substring S
|
|
1693
|
|
1694 procedure Check_File_Name (S : String) is
|
|
1695 begin
|
|
1696 for J in 1 .. FN'Length - (S'Length - 1) loop
|
|
1697 if FN (J .. J + (S'Length - 1)) = S then
|
|
1698 Error_Msg
|
|
1699 ("warning: executable file name """ & Output_File_Name.all
|
|
1700 & """ contains substring """ & S & '"');
|
|
1701 Error_Msg
|
|
1702 ("admin privileges may be required to run this file");
|
|
1703 end if;
|
|
1704 end loop;
|
|
1705 end Check_File_Name;
|
|
1706
|
|
1707 -- Start of processing for Bad_File_Names_On_Windows
|
|
1708
|
|
1709 begin
|
|
1710 for J in FN'Range loop
|
|
1711 FN (J) := Csets.Fold_Lower (FN (J));
|
|
1712 end loop;
|
|
1713
|
|
1714 -- For now we detect Windows by its executable suffix of .exe
|
|
1715
|
|
1716 if Target_Debuggable_Suffix.all = ".exe" then
|
|
1717 Check_File_Name ("install");
|
|
1718 Check_File_Name ("setup");
|
|
1719 Check_File_Name ("update");
|
|
1720 Check_File_Name ("patch");
|
|
1721 end if;
|
|
1722 end Bad_File_Names_On_Windows;
|
|
1723
|
|
1724 -- If -M switch was specified, add the switches to create the map file
|
|
1725
|
|
1726 if Create_Map_File then
|
|
1727 declare
|
|
1728 Map_Name : constant String := Base_Name (Ali_File_Name.all) & ".map";
|
|
1729 Switches : String_List_Access;
|
|
1730
|
|
1731 begin
|
|
1732 Convert (Map_File, Map_Name, Switches);
|
|
1733
|
|
1734 if Switches /= null then
|
|
1735 for J in Switches'Range loop
|
|
1736 Linker_Options.Increment_Last;
|
|
1737 Linker_Options.Table (Linker_Options.Last) := Switches (J);
|
|
1738 end loop;
|
|
1739 end if;
|
|
1740 end;
|
|
1741 end if;
|
|
1742
|
|
1743 -- Perform consistency checks
|
|
1744
|
|
1745 -- Transform the .ali file name into the binder output file name
|
|
1746
|
|
1747 Make_Binder_File_Names : declare
|
|
1748 Fname : constant String := Base_Name (Ali_File_Name.all);
|
|
1749 Fname_Len : Integer := Fname'Length;
|
|
1750
|
|
1751 function Get_Maximum_File_Name_Length return Integer;
|
|
1752 pragma Import (C, Get_Maximum_File_Name_Length,
|
|
1753 "__gnat_get_maximum_file_name_length");
|
|
1754
|
|
1755 Maximum_File_Name_Length : constant Integer :=
|
|
1756 Get_Maximum_File_Name_Length;
|
|
1757
|
|
1758 Bind_File_Prefix : Types.String_Ptr;
|
|
1759 -- Contains prefix used for bind files
|
|
1760
|
|
1761 begin
|
|
1762 -- Set prefix
|
|
1763
|
|
1764 Bind_File_Prefix := new String'("b~");
|
|
1765
|
|
1766 -- If the length of the binder file becomes too long due to
|
|
1767 -- the addition of the "b?" prefix, then truncate it.
|
|
1768
|
|
1769 if Maximum_File_Name_Length > 0 then
|
|
1770 while Fname_Len >
|
|
1771 Maximum_File_Name_Length - Bind_File_Prefix.all'Length
|
|
1772 loop
|
|
1773 Fname_Len := Fname_Len - 1;
|
|
1774 end loop;
|
|
1775 end if;
|
|
1776
|
|
1777 declare
|
|
1778 Fnam : constant String :=
|
|
1779 Bind_File_Prefix.all &
|
|
1780 Fname (Fname'First .. Fname'First + Fname_Len - 1);
|
|
1781
|
|
1782 begin
|
|
1783 Binder_Spec_Src_File := new String'(Fnam & ".ads");
|
|
1784 Binder_Body_Src_File := new String'(Fnam & ".adb");
|
|
1785 Binder_Ali_File := new String'(Fnam & ".ali");
|
|
1786
|
|
1787 Binder_Obj_File := new String'(Fnam & Get_Target_Object_Suffix.all);
|
|
1788 end;
|
|
1789
|
|
1790 if Fname_Len /= Fname'Length then
|
|
1791 Binder_Options.Increment_Last;
|
|
1792 Binder_Options.Table (Binder_Options.Last) := new String'("-o");
|
|
1793 Binder_Options.Increment_Last;
|
|
1794 Binder_Options.Table (Binder_Options.Last) := Binder_Obj_File;
|
|
1795 end if;
|
|
1796 end Make_Binder_File_Names;
|
|
1797
|
|
1798 Process_Binder_File (Binder_Body_Src_File.all & ASCII.NUL);
|
|
1799
|
|
1800 -- Compile the binder file. This is fast, so we always do it, unless
|
|
1801 -- specifically told not to by the -n switch
|
|
1802
|
|
1803 if Compile_Bind_File then
|
|
1804 Bind_Step : declare
|
|
1805 Success : Boolean;
|
|
1806
|
|
1807 Args : Argument_List
|
|
1808 (1 .. Binder_Options_From_ALI.Last + Binder_Options.Last + 1);
|
|
1809
|
|
1810 begin
|
|
1811 for J in 1 .. Binder_Options_From_ALI.Last loop
|
|
1812 Args (J) := Binder_Options_From_ALI.Table (J);
|
|
1813 end loop;
|
|
1814
|
|
1815 for J in 1 .. Binder_Options.Last loop
|
|
1816 Args (Binder_Options_From_ALI.Last + J) :=
|
|
1817 Binder_Options.Table (J);
|
|
1818 end loop;
|
|
1819
|
|
1820 -- Use the full path of the binder generated source, so that it is
|
|
1821 -- guaranteed that the debugger will find this source, even with
|
|
1822 -- STABS.
|
|
1823
|
|
1824 Args (Args'Last) :=
|
|
1825 new String'(Normalize_Pathname (Binder_Body_Src_File.all));
|
|
1826
|
|
1827 if Verbose_Mode then
|
|
1828 Write_Str (Base_Name (Gcc_Path.all));
|
|
1829
|
|
1830 for J in Args'Range loop
|
|
1831 Write_Str (" ");
|
|
1832 Write_Str (Args (J).all);
|
|
1833 end loop;
|
|
1834
|
|
1835 Write_Eol;
|
|
1836 end if;
|
|
1837
|
|
1838 System.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
|
|
1839
|
|
1840 if not Success then
|
|
1841 Exit_Program (E_Fatal);
|
|
1842 end if;
|
|
1843 end Bind_Step;
|
|
1844 end if;
|
|
1845
|
|
1846 -- In CodePeer mode, there's nothing left to do after the binder file has
|
|
1847 -- been compiled.
|
|
1848
|
|
1849 if Opt.CodePeer_Mode then
|
|
1850 if Tname_FD /= Invalid_FD then
|
|
1851 Delete (Tname);
|
|
1852 end if;
|
|
1853
|
|
1854 return;
|
|
1855 end if;
|
|
1856
|
|
1857 -- Now, actually link the program
|
|
1858
|
|
1859 Link_Step : declare
|
|
1860 Num_Args : Natural :=
|
|
1861 (Linker_Options.Last - Linker_Options.First + 1) +
|
|
1862 (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) +
|
|
1863 (Linker_Objects.Last - Linker_Objects.First + 1);
|
|
1864 Stack_Op : Boolean := False;
|
|
1865
|
|
1866 begin
|
|
1867 -- Remove duplicate stack size setting from the Linker_Options table.
|
|
1868 -- The stack setting option "-Xlinker --stack=R,C" can be found
|
|
1869 -- in one line when set by a pragma Linker_Options or in two lines
|
|
1870 -- ("-Xlinker" then "--stack=R,C") when set on the command line. We
|
|
1871 -- also check for the "-Wl,--stack=R" style option.
|
|
1872
|
|
1873 -- We must remove the second stack setting option instance because
|
|
1874 -- the one on the command line will always be the first one. And any
|
|
1875 -- subsequent stack setting option will overwrite the previous one.
|
|
1876 -- This is done especially for GNAT/NT where we set the stack size
|
|
1877 -- for tasking programs by a pragma in the NT specific tasking
|
|
1878 -- package System.Task_Primitives.Operations.
|
|
1879
|
|
1880 -- Note: This is not a FOR loop that runs from Linker_Options.First
|
|
1881 -- to Linker_Options.Last, since operations within the loop can
|
|
1882 -- modify the length of the table.
|
|
1883
|
|
1884 Clean_Link_Option_Set : declare
|
|
1885 J : Natural;
|
|
1886 Shared_Libgcc_Seen : Boolean := False;
|
|
1887
|
|
1888 begin
|
|
1889 J := Linker_Options.First;
|
|
1890 while J <= Linker_Options.Last loop
|
|
1891 if Linker_Options.Table (J).all = "-Xlinker"
|
|
1892 and then J < Linker_Options.Last
|
|
1893 and then Linker_Options.Table (J + 1)'Length > 8
|
|
1894 and then Linker_Options.Table (J + 1) (1 .. 8) = "--stack="
|
|
1895 then
|
|
1896 if Stack_Op then
|
|
1897 Linker_Options.Table (J .. Linker_Options.Last - 2) :=
|
|
1898 Linker_Options.Table (J + 2 .. Linker_Options.Last);
|
|
1899 Linker_Options.Decrement_Last;
|
|
1900 Linker_Options.Decrement_Last;
|
|
1901 Num_Args := Num_Args - 2;
|
|
1902
|
|
1903 else
|
|
1904 Stack_Op := True;
|
|
1905 end if;
|
|
1906 end if;
|
|
1907
|
|
1908 -- Remove duplicate -shared-libgcc switch
|
|
1909
|
|
1910 if Linker_Options.Table (J).all = Shared_Libgcc_String then
|
|
1911 if Shared_Libgcc_Seen then
|
|
1912 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
|
|
1913 Linker_Options.Table (J + 1 .. Linker_Options.Last);
|
|
1914 Linker_Options.Decrement_Last;
|
|
1915 Num_Args := Num_Args - 1;
|
|
1916
|
|
1917 else
|
|
1918 Shared_Libgcc_Seen := True;
|
|
1919 end if;
|
|
1920 end if;
|
|
1921
|
|
1922 -- Here we just check for a canonical form that matches the
|
|
1923 -- pragma Linker_Options set in the NT runtime.
|
|
1924
|
|
1925 if (Linker_Options.Table (J)'Length > 17
|
|
1926 and then Linker_Options.Table (J) (1 .. 17) =
|
|
1927 "-Xlinker --stack=")
|
|
1928 or else
|
|
1929 (Linker_Options.Table (J)'Length > 12
|
|
1930 and then Linker_Options.Table (J) (1 .. 12) =
|
|
1931 "-Wl,--stack=")
|
|
1932 then
|
|
1933 if Stack_Op then
|
|
1934 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
|
|
1935 Linker_Options.Table (J + 1 .. Linker_Options.Last);
|
|
1936 Linker_Options.Decrement_Last;
|
|
1937 Num_Args := Num_Args - 1;
|
|
1938
|
|
1939 else
|
|
1940 Stack_Op := True;
|
|
1941 end if;
|
|
1942 end if;
|
|
1943
|
|
1944 J := J + 1;
|
|
1945 end loop;
|
|
1946
|
|
1947 if Linker_Path = Gcc_Path then
|
|
1948
|
|
1949 -- For systems where the default is to link statically with
|
|
1950 -- libgcc, if gcc is not called with -shared-libgcc, call it
|
|
1951 -- with -static-libgcc, as there are some platforms where one
|
|
1952 -- of these two switches is compulsory to link.
|
|
1953
|
|
1954 if Shared_Libgcc_Default = 'T'
|
|
1955 and then not Shared_Libgcc_Seen
|
|
1956 then
|
|
1957 Linker_Options.Increment_Last;
|
|
1958 Linker_Options.Table (Linker_Options.Last) := Static_Libgcc;
|
|
1959 Num_Args := Num_Args + 1;
|
|
1960 end if;
|
|
1961 end if;
|
|
1962 end Clean_Link_Option_Set;
|
|
1963
|
|
1964 -- Prepare arguments for call to linker
|
|
1965
|
|
1966 Call_Linker : declare
|
|
1967 Success : Boolean;
|
|
1968 Args : Argument_List (1 .. Num_Args + 1);
|
|
1969 Index : Integer := Args'First;
|
|
1970
|
|
1971 begin
|
|
1972 Args (Index) := Binder_Obj_File;
|
|
1973
|
|
1974 -- Add the object files and any -largs libraries
|
|
1975
|
|
1976 for J in Linker_Objects.First .. Linker_Objects.Last loop
|
|
1977 Index := Index + 1;
|
|
1978 Args (Index) := Linker_Objects.Table (J);
|
|
1979 end loop;
|
|
1980
|
|
1981 -- Add the linker options from the binder file
|
|
1982
|
|
1983 for J in Linker_Options.First .. Linker_Options.Last loop
|
|
1984 Index := Index + 1;
|
|
1985 Args (Index) := Linker_Options.Table (J);
|
|
1986 end loop;
|
|
1987
|
|
1988 -- Finally add the libraries from the --GCC= switch
|
|
1989
|
|
1990 for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop
|
|
1991 Index := Index + 1;
|
|
1992 Args (Index) := Gcc_Linker_Options.Table (J);
|
|
1993 end loop;
|
|
1994
|
|
1995 if Verbose_Mode then
|
|
1996 Write_Str (Linker_Path.all);
|
|
1997
|
|
1998 for J in Args'Range loop
|
|
1999 Write_Str (" ");
|
|
2000 Write_Str (Args (J).all);
|
|
2001 end loop;
|
|
2002
|
|
2003 Write_Eol;
|
|
2004
|
|
2005 -- If we are on very verbose mode (-v -v) and a response file
|
|
2006 -- is used we display its content.
|
|
2007
|
|
2008 if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then
|
|
2009 Write_Eol;
|
|
2010 Write_Str ("Response file (" &
|
|
2011 Tname (Tname'First .. Tname'Last - 1) &
|
|
2012 ") content : ");
|
|
2013 Write_Eol;
|
|
2014
|
|
2015 for J in
|
|
2016 Response_File_Objects.First .. Response_File_Objects.Last
|
|
2017 loop
|
|
2018 Write_Str (Response_File_Objects.Table (J).all);
|
|
2019 Write_Eol;
|
|
2020 end loop;
|
|
2021
|
|
2022 Write_Eol;
|
|
2023 end if;
|
|
2024 end if;
|
|
2025
|
|
2026 System.OS_Lib.Spawn (Linker_Path.all, Args, Success);
|
|
2027
|
|
2028 -- Delete the temporary file used in conjunction with linking if one
|
|
2029 -- was created. See Process_Bind_File for details.
|
|
2030
|
|
2031 if Tname_FD /= Invalid_FD then
|
|
2032 Delete (Tname);
|
|
2033 end if;
|
|
2034
|
|
2035 if not Success then
|
|
2036 Error_Msg ("error when calling " & Linker_Path.all);
|
|
2037 Exit_Program (E_Fatal);
|
|
2038 end if;
|
|
2039 end Call_Linker;
|
|
2040 end Link_Step;
|
|
2041
|
|
2042 -- Only keep the binder output file and it's associated object
|
|
2043 -- file if compiling with the -g option. These files are only
|
|
2044 -- useful if debugging.
|
|
2045
|
|
2046 if not Debug_Flag_Present then
|
|
2047 Delete (Binder_Ali_File.all & ASCII.NUL);
|
|
2048 Delete (Binder_Spec_Src_File.all & ASCII.NUL);
|
|
2049 Delete (Binder_Body_Src_File.all & ASCII.NUL);
|
|
2050 Delete (Binder_Obj_File.all & ASCII.NUL);
|
|
2051 end if;
|
|
2052
|
|
2053 Exit_Program (E_Success);
|
|
2054
|
|
2055 exception
|
|
2056 when X : others =>
|
|
2057 Write_Line (Exception_Information (X));
|
|
2058 Exit_With_Error ("INTERNAL ERROR. Please report");
|
|
2059 end Gnatlink;
|