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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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9 -- Copyright (C) 1996-2017, Free Software Foundation, Inc. --
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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;
|
|
|
420 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
421 Switches (J);
|
|
|
422 end loop;
|
|
|
423 end if;
|
|
|
424 end;
|
|
|
425
|
|
|
426 elsif Arg'Length = 2 then
|
|
|
427 case Arg (2) is
|
|
|
428 when 'b' =>
|
|
|
429 Linker_Options.Increment_Last;
|
|
|
430 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
431 new String'(Arg);
|
|
|
432
|
|
|
433 Binder_Options.Increment_Last;
|
|
|
434 Binder_Options.Table (Binder_Options.Last) :=
|
|
|
435 Linker_Options.Table (Linker_Options.Last);
|
|
|
436
|
|
|
437 Next_Arg := Next_Arg + 1;
|
|
|
438
|
|
|
439 if Next_Arg > Argument_Count then
|
|
|
440 Exit_With_Error ("Missing argument for -b");
|
|
|
441 end if;
|
|
|
442
|
|
|
443 Get_Machine_Name : declare
|
|
|
444 Name_Arg : constant String_Access :=
|
|
|
445 new String'(Argument (Next_Arg));
|
|
|
446
|
|
|
447 begin
|
|
|
448 Linker_Options.Increment_Last;
|
|
|
449 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
450 Name_Arg;
|
|
|
451
|
|
|
452 Binder_Options.Increment_Last;
|
|
|
453 Binder_Options.Table (Binder_Options.Last) :=
|
|
|
454 Name_Arg;
|
|
|
455
|
|
|
456 end Get_Machine_Name;
|
|
|
457
|
|
|
458 when 'f' =>
|
|
|
459 if Object_List_File_Supported then
|
|
|
460 Object_List_File_Required := True;
|
|
|
461 else
|
|
|
462 Exit_With_Error
|
|
|
463 ("Object list file not supported on this target");
|
|
|
464 end if;
|
|
|
465
|
|
|
466 when 'M' =>
|
|
|
467 Create_Map_File := True;
|
|
|
468
|
|
|
469 when 'n' =>
|
|
|
470 Compile_Bind_File := False;
|
|
|
471
|
|
|
472 when 'o' =>
|
|
|
473 Next_Arg := Next_Arg + 1;
|
|
|
474
|
|
|
475 if Next_Arg > Argument_Count then
|
|
|
476 Exit_With_Error ("Missing argument for -o");
|
|
|
477 end if;
|
|
|
478
|
|
|
479 Output_File_Name :=
|
|
|
480 new String'(Executable_Name
|
|
|
481 (Argument (Next_Arg),
|
|
|
482 Only_If_No_Suffix => True));
|
|
|
483
|
|
|
484 when 'P' =>
|
|
|
485 Opt.CodePeer_Mode := True;
|
|
|
486
|
|
|
487 when 'R' =>
|
|
|
488 Opt.Run_Path_Option := False;
|
|
|
489
|
|
|
490 when 'v' =>
|
|
|
491
|
|
|
492 -- Support "double" verbose mode. Second -v
|
|
|
493 -- gets sent to the linker and binder phases.
|
|
|
494
|
|
|
495 if Verbose_Mode then
|
|
|
496 Very_Verbose_Mode := True;
|
|
|
497
|
|
|
498 Linker_Options.Increment_Last;
|
|
|
499 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
500 new String'(Arg);
|
|
|
501
|
|
|
502 Binder_Options.Increment_Last;
|
|
|
503 Binder_Options.Table (Binder_Options.Last) :=
|
|
|
504 Linker_Options.Table (Linker_Options.Last);
|
|
|
505
|
|
|
506 else
|
|
|
507 Verbose_Mode := True;
|
|
|
508
|
|
|
509 end if;
|
|
|
510
|
|
|
511 when others =>
|
|
|
512 Linker_Options.Increment_Last;
|
|
|
513 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
514 new String'(Arg);
|
|
|
515
|
|
|
516 end case;
|
|
|
517
|
|
|
518 elsif Arg (2) = 'B' then
|
|
|
519 Linker_Options.Increment_Last;
|
|
|
520 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
521 new String'(Arg);
|
|
|
522
|
|
|
523 Binder_Options.Increment_Last;
|
|
|
524 Binder_Options.Table (Binder_Options.Last) :=
|
|
|
525 Linker_Options.Table (Linker_Options.Last);
|
|
|
526
|
|
|
527 elsif Arg'Length >= 7 and then Arg (1 .. 7) = "--LINK=" then
|
|
|
528 if Arg'Length = 7 then
|
|
|
529 Exit_With_Error ("Missing argument for --LINK=");
|
|
|
530 end if;
|
|
|
531
|
|
|
532 Linker_Path :=
|
|
|
533 System.OS_Lib.Locate_Exec_On_Path (Arg (8 .. Arg'Last));
|
|
|
534
|
|
|
535 if Linker_Path = null then
|
|
|
536 Exit_With_Error
|
|
|
537 ("Could not locate linker: " & Arg (8 .. Arg'Last));
|
|
|
538 end if;
|
|
|
539
|
|
|
540 elsif Arg'Length > 6 and then Arg (1 .. 6) = "--GCC=" then
|
|
|
541 declare
|
|
|
542 Program_Args : constant Argument_List_Access :=
|
|
|
543 Argument_String_To_List
|
|
|
544 (Arg (7 .. Arg'Last));
|
|
|
545
|
|
|
546 begin
|
|
|
547 if Program_Args.all (1).all /= Gcc.all then
|
|
|
548 Gcc := new String'(Program_Args.all (1).all);
|
|
|
549 Standard_Gcc := False;
|
|
|
550 end if;
|
|
|
551
|
|
|
552 -- Set appropriate flags for switches passed
|
|
|
553
|
|
|
554 for J in 2 .. Program_Args.all'Last loop
|
|
|
555 declare
|
|
|
556 Arg : constant String := Program_Args.all (J).all;
|
|
|
557 AF : constant Integer := Arg'First;
|
|
|
558
|
|
|
559 begin
|
|
|
560 if Arg'Length /= 0 and then Arg (AF) = '-' then
|
|
|
561 if Arg (AF + 1) = 'g'
|
|
|
562 and then (Arg'Length = 2
|
|
|
563 or else Arg (AF + 2) in '0' .. '3'
|
|
|
564 or else Arg (AF + 2 .. Arg'Last) = "coff")
|
|
|
565 then
|
|
|
566 Debug_Flag_Present := True;
|
|
|
567 end if;
|
|
|
568 end if;
|
|
|
569
|
|
|
570 -- Add directory to source search dirs so that
|
|
|
571 -- Get_Target_Parameters can find system.ads
|
|
|
572
|
|
|
573 if Arg (AF .. AF + 1) = "-I"
|
|
|
574 and then Arg'Length > 2
|
|
|
575 then
|
|
|
576 Add_Src_Search_Dir (Arg (AF + 2 .. Arg'Last));
|
|
|
577 end if;
|
|
|
578
|
|
|
579 -- Pass to gcc for compiling binder generated file
|
|
|
580 -- No use passing libraries, it will just generate
|
|
|
581 -- a warning
|
|
|
582
|
|
|
583 if not (Arg (AF .. AF + 1) = "-l"
|
|
|
584 or else Arg (AF .. AF + 1) = "-L")
|
|
|
585 then
|
|
|
586 Binder_Options.Increment_Last;
|
|
|
587 Binder_Options.Table (Binder_Options.Last) :=
|
|
|
588 new String'(Arg);
|
|
|
589 end if;
|
|
|
590
|
|
|
591 -- Pass to gcc for linking program
|
|
|
592
|
|
|
593 Gcc_Linker_Options.Increment_Last;
|
|
|
594 Gcc_Linker_Options.Table
|
|
|
595 (Gcc_Linker_Options.Last) := new String'(Arg);
|
|
|
596 end;
|
|
|
597 end loop;
|
|
|
598 end;
|
|
|
599
|
|
|
600 -- Send all multi-character switches not recognized as
|
|
|
601 -- a special case by gnatlink to the linker/loader stage.
|
|
|
602
|
|
|
603 else
|
|
|
604 Linker_Options.Increment_Last;
|
|
|
605 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
606 new String'(Arg);
|
|
|
607 end if;
|
|
|
608
|
|
|
609 -- Here if argument is a file name rather than a switch
|
|
|
610
|
|
|
611 else
|
|
|
612 -- If explicit ali file, capture it
|
|
|
613
|
|
|
614 if Arg'Length > 4
|
|
|
615 and then Arg (Arg'Last - 3 .. Arg'Last) = ".ali"
|
|
|
616 then
|
|
|
617 if Ali_File_Name = null then
|
|
|
618 Ali_File_Name := new String'(Arg);
|
|
|
619 else
|
|
|
620 Exit_With_Error ("cannot handle more than one ALI file");
|
|
|
621 end if;
|
|
|
622
|
|
|
623 -- If target object file, record object file
|
|
|
624
|
|
|
625 elsif Arg'Length > Get_Target_Object_Suffix.all'Length
|
|
|
626 and then Arg
|
|
|
627 (Arg'Last -
|
|
|
628 Get_Target_Object_Suffix.all'Length + 1 .. Arg'Last)
|
|
|
629 = Get_Target_Object_Suffix.all
|
|
|
630 then
|
|
|
631 Linker_Objects.Increment_Last;
|
|
|
632 Linker_Objects.Table (Linker_Objects.Last) :=
|
|
|
633 new String'(Arg);
|
|
|
634
|
|
|
635 -- If host object file, record object file
|
|
|
636
|
|
|
637 elsif Arg'Length > Get_Object_Suffix.all'Length
|
|
|
638 and then Arg
|
|
|
639 (Arg'Last - Get_Object_Suffix.all'Length + 1 .. Arg'Last)
|
|
|
640 = Get_Object_Suffix.all
|
|
|
641 then
|
|
|
642 Linker_Objects.Increment_Last;
|
|
|
643 Linker_Objects.Table (Linker_Objects.Last) :=
|
|
|
644 new String'(Arg);
|
|
|
645
|
|
|
646 -- If corresponding ali file exists, capture it
|
|
|
647
|
|
|
648 elsif Ali_File_Name = null
|
|
|
649 and then Is_Regular_File (Arg & ".ali")
|
|
|
650 then
|
|
|
651 Ali_File_Name := new String'(Arg & ".ali");
|
|
|
652
|
|
|
653 -- Otherwise assume this is a linker options entry, but
|
|
|
654 -- see below for interesting adjustment to this assumption.
|
|
|
655
|
|
|
656 else
|
|
|
657 Linker_Options.Increment_Last;
|
|
|
658 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
659 new String'(Arg);
|
|
|
660 end if;
|
|
|
661 end if;
|
|
|
662 end Process_One_Arg;
|
|
|
663
|
|
|
664 Next_Arg := Next_Arg + 1;
|
|
|
665 end loop;
|
|
|
666
|
|
|
667 -- Compile the bind file with warnings suppressed, because
|
|
|
668 -- otherwise the with of the main program may cause junk warnings.
|
|
|
669
|
|
|
670 Binder_Options.Increment_Last;
|
|
|
671 Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws");
|
|
|
672
|
|
|
673 -- If we did not get an ali file at all, and we had at least one
|
|
|
674 -- linker option, then assume that was the intended ali file after
|
|
|
675 -- all, so that we get a nicer message later on.
|
|
|
676
|
|
|
677 if Ali_File_Name = null
|
|
|
678 and then Linker_Options.Last >= Linker_Options.First
|
|
|
679 then
|
|
|
680 Ali_File_Name :=
|
|
|
681 new String'(Linker_Options.Table (Linker_Options.First).all
|
|
|
682 & ".ali");
|
|
|
683 end if;
|
|
|
684 end Process_Args;
|
|
|
685
|
|
|
686 -------------------------
|
|
|
687 -- Process_Binder_File --
|
|
|
688 -------------------------
|
|
|
689
|
|
|
690 procedure Process_Binder_File (Name : String) is
|
|
|
691 Fd : FILEs;
|
|
|
692 -- Binder file's descriptor
|
|
|
693
|
|
|
694 Link_Bytes : Integer := 0;
|
|
|
695 -- Projected number of bytes for the linker command line
|
|
|
696
|
|
|
697 Link_Max : Integer;
|
|
|
698 pragma Import (C, Link_Max, "__gnat_link_max");
|
|
|
699 -- Maximum number of bytes on the command line supported by the OS
|
|
|
700 -- linker. Passed this limit the response file mechanism must be used
|
|
|
701 -- if supported.
|
|
|
702
|
|
|
703 Next_Line : String (1 .. 1000);
|
|
|
704 -- Current line value
|
|
|
705
|
|
|
706 Nlast : Integer;
|
|
|
707 Nfirst : Integer;
|
|
|
708 -- Current line slice (the slice does not contain line terminator)
|
|
|
709
|
|
|
710 Last : Integer;
|
|
|
711 -- Current line last character for shared libraries (without version)
|
|
|
712
|
|
|
713 Objs_Begin : Integer := 0;
|
|
|
714 -- First object file index in Linker_Objects table
|
|
|
715
|
|
|
716 Objs_End : Integer := 0;
|
|
|
717 -- Last object file index in Linker_Objects table
|
|
|
718
|
|
|
719 Status : int;
|
|
|
720 pragma Warnings (Off, Status);
|
|
|
721 -- Used for various Interfaces.C_Streams calls
|
|
|
722
|
|
|
723 Closing_Status : Boolean;
|
|
|
724 pragma Warnings (Off, Closing_Status);
|
|
|
725 -- For call to Close
|
|
|
726
|
|
|
727 GNAT_Static : Boolean := False;
|
|
|
728 -- Save state of -static option
|
|
|
729
|
|
|
730 GNAT_Shared : Boolean := False;
|
|
|
731 -- Save state of -shared option
|
|
|
732
|
|
|
733 Xlinker_Was_Previous : Boolean := False;
|
|
|
734 -- Indicate that "-Xlinker" was the option preceding the current option.
|
|
|
735 -- If True, then the current option is never suppressed.
|
|
|
736
|
|
|
737 -- Rollback data
|
|
|
738
|
|
|
739 -- These data items are used to store current binder file context. The
|
|
|
740 -- context is composed of the file descriptor position and the current
|
|
|
741 -- line together with the slice indexes (first and last position) for
|
|
|
742 -- this line. The rollback data are used by the Store_File_Context and
|
|
|
743 -- Rollback_File_Context routines below. The file context mechanism
|
|
|
744 -- interact only with the Get_Next_Line call. For example:
|
|
|
745
|
|
|
746 -- Store_File_Context;
|
|
|
747 -- Get_Next_Line;
|
|
|
748 -- Rollback_File_Context;
|
|
|
749 -- Get_Next_Line;
|
|
|
750
|
|
|
751 -- Both Get_Next_Line calls above will read the exact same data from
|
|
|
752 -- the file. In other words, Next_Line, Nfirst and Nlast variables
|
|
|
753 -- will be set with the exact same values.
|
|
|
754
|
|
|
755 RB_File_Pos : long; -- File position
|
|
|
756 RB_Next_Line : String (1 .. 1000); -- Current line content
|
|
|
757 RB_Nlast : Integer; -- Slice last index
|
|
|
758 RB_Nfirst : Integer; -- Slice first index
|
|
|
759
|
|
|
760 Run_Path_Option_Ptr : Interfaces.C.Strings.chars_ptr;
|
|
|
761 pragma Import (C, Run_Path_Option_Ptr, "__gnat_run_path_option");
|
|
|
762 -- Pointer to string representing the native linker option which
|
|
|
763 -- specifies the path where the dynamic loader should find shared
|
|
|
764 -- libraries. Equal to null string if this system doesn't support it.
|
|
|
765
|
|
|
766 Libgcc_Subdir_Ptr : Interfaces.C.Strings.chars_ptr;
|
|
|
767 pragma Import (C, Libgcc_Subdir_Ptr, "__gnat_default_libgcc_subdir");
|
|
|
768 -- Pointer to string indicating the installation subdirectory where
|
|
|
769 -- a default shared libgcc might be found.
|
|
|
770
|
|
|
771 Object_Library_Ext_Ptr : Interfaces.C.Strings.chars_ptr;
|
|
|
772 pragma Import
|
|
|
773 (C, Object_Library_Ext_Ptr, "__gnat_object_library_extension");
|
|
|
774 -- Pointer to string specifying the default extension for
|
|
|
775 -- object libraries, e.g. Unix uses ".a".
|
|
|
776
|
|
|
777 Separate_Run_Path_Options : Boolean;
|
|
|
778 for Separate_Run_Path_Options'Size use Character'Size;
|
|
|
779 pragma Import
|
|
|
780 (C, Separate_Run_Path_Options, "__gnat_separate_run_path_options");
|
|
|
781 -- Whether separate rpath options should be emitted for each directory
|
|
|
782
|
|
|
783 procedure Get_Next_Line;
|
|
|
784 -- Read the next line from the binder file without the line
|
|
|
785 -- terminator.
|
|
|
786
|
|
|
787 function Index (S, Pattern : String) return Natural;
|
|
|
788 -- Return the last occurrence of Pattern in S, or 0 if none
|
|
|
789
|
|
|
790 procedure Store_File_Context;
|
|
|
791 -- Store current file context, Fd position and current line data.
|
|
|
792 -- The file context is stored into the rollback data above (RB_*).
|
|
|
793 -- Store_File_Context can be called at any time, only the last call
|
|
|
794 -- will be used (i.e. this routine overwrites the file context).
|
|
|
795
|
|
|
796 procedure Rollback_File_Context;
|
|
|
797 -- Restore file context from rollback data. This routine must be called
|
|
|
798 -- after Store_File_Context. The binder file context will be restored
|
|
|
799 -- with the data stored by the last Store_File_Context call.
|
|
|
800
|
|
|
801 procedure Write_RF (S : String);
|
|
|
802 -- Write a string to the response file and check if it was successful.
|
|
|
803 -- Fail the program if it was not successful (disk full).
|
|
|
804
|
|
|
805 -------------------
|
|
|
806 -- Get_Next_Line --
|
|
|
807 -------------------
|
|
|
808
|
|
|
809 procedure Get_Next_Line is
|
|
|
810 Fchars : chars;
|
|
|
811
|
|
|
812 begin
|
|
|
813 Fchars := fgets (Next_Line'Address, Next_Line'Length, Fd);
|
|
|
814
|
|
|
815 if Fchars = System.Null_Address then
|
|
|
816 Exit_With_Error ("Error reading binder output");
|
|
|
817 end if;
|
|
|
818
|
|
|
819 Nfirst := Next_Line'First;
|
|
|
820 Nlast := Nfirst;
|
|
|
821 while Nlast <= Next_Line'Last
|
|
|
822 and then Next_Line (Nlast) /= ASCII.LF
|
|
|
823 and then Next_Line (Nlast) /= ASCII.CR
|
|
|
824 loop
|
|
|
825 Nlast := Nlast + 1;
|
|
|
826 end loop;
|
|
|
827
|
|
|
828 Nlast := Nlast - 1;
|
|
|
829 end Get_Next_Line;
|
|
|
830
|
|
|
831 -----------
|
|
|
832 -- Index --
|
|
|
833 -----------
|
|
|
834
|
|
|
835 function Index (S, Pattern : String) return Natural is
|
|
|
836 Len : constant Natural := Pattern'Length;
|
|
|
837
|
|
|
838 begin
|
|
|
839 for J in reverse S'First .. S'Last - Len + 1 loop
|
|
|
840 if Pattern = S (J .. J + Len - 1) then
|
|
|
841 return J;
|
|
|
842 end if;
|
|
|
843 end loop;
|
|
|
844
|
|
|
845 return 0;
|
|
|
846 end Index;
|
|
|
847
|
|
|
848 ---------------------------
|
|
|
849 -- Rollback_File_Context --
|
|
|
850 ---------------------------
|
|
|
851
|
|
|
852 procedure Rollback_File_Context is
|
|
|
853 begin
|
|
|
854 Next_Line := RB_Next_Line;
|
|
|
855 Nfirst := RB_Nfirst;
|
|
|
856 Nlast := RB_Nlast;
|
|
|
857 Status := fseek (Fd, RB_File_Pos, Interfaces.C_Streams.SEEK_SET);
|
|
|
858
|
|
|
859 if Status = -1 then
|
|
|
860 Exit_With_Error ("Error setting file position");
|
|
|
861 end if;
|
|
|
862 end Rollback_File_Context;
|
|
|
863
|
|
|
864 ------------------------
|
|
|
865 -- Store_File_Context --
|
|
|
866 ------------------------
|
|
|
867
|
|
|
868 procedure Store_File_Context is
|
|
|
869 use type System.CRTL.long;
|
|
|
870
|
|
|
871 begin
|
|
|
872 RB_Next_Line := Next_Line;
|
|
|
873 RB_Nfirst := Nfirst;
|
|
|
874 RB_Nlast := Nlast;
|
|
|
875 RB_File_Pos := ftell (Fd);
|
|
|
876
|
|
|
877 if RB_File_Pos = -1 then
|
|
|
878 Exit_With_Error ("Error getting file position");
|
|
|
879 end if;
|
|
|
880 end Store_File_Context;
|
|
|
881
|
|
|
882 --------------
|
|
|
883 -- Write_RF --
|
|
|
884 --------------
|
|
|
885
|
|
|
886 procedure Write_RF (S : String) is
|
|
|
887 Success : Boolean := True;
|
|
|
888 Back_Slash : constant Character := '\';
|
|
|
889
|
|
|
890 begin
|
|
|
891 -- If a GNU response file is used, space and backslash need to be
|
|
|
892 -- escaped because they are interpreted as a string separator and
|
|
|
893 -- an escape character respectively by the underlying mechanism.
|
|
|
894 -- On the other hand, quote and double-quote are not escaped since
|
|
|
895 -- they are interpreted as string delimiters on both sides.
|
|
|
896
|
|
|
897 if Using_GNU_response_file then
|
|
|
898 for J in S'Range loop
|
|
|
899 if S (J) = ' ' or else S (J) = '\' then
|
|
|
900 if Write (Tname_FD, Back_Slash'Address, 1) /= 1 then
|
|
|
901 Success := False;
|
|
|
902 end if;
|
|
|
903 end if;
|
|
|
904
|
|
|
905 if Write (Tname_FD, S (J)'Address, 1) /= 1 then
|
|
|
906 Success := False;
|
|
|
907 end if;
|
|
|
908 end loop;
|
|
|
909
|
|
|
910 else
|
|
|
911 if Write (Tname_FD, S'Address, S'Length) /= S'Length then
|
|
|
912 Success := False;
|
|
|
913 end if;
|
|
|
914 end if;
|
|
|
915
|
|
|
916 if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then
|
|
|
917 Success := False;
|
|
|
918 end if;
|
|
|
919
|
|
|
920 if not Success then
|
|
|
921 Exit_With_Error ("Error generating response file: disk full");
|
|
|
922 end if;
|
|
|
923 end Write_RF;
|
|
|
924
|
|
|
925 -- Start of processing for Process_Binder_File
|
|
|
926
|
|
|
927 begin
|
|
|
928 Fd := fopen (Name'Address, Read_Mode'Address);
|
|
|
929
|
|
|
930 if Fd = NULL_Stream then
|
|
|
931 Exit_With_Error ("Failed to open binder output");
|
|
|
932 end if;
|
|
|
933
|
|
|
934 -- Skip up to the Begin Info line
|
|
|
935
|
|
|
936 loop
|
|
|
937 Get_Next_Line;
|
|
|
938 exit when Next_Line (Nfirst .. Nlast) = Begin_Info;
|
|
|
939 end loop;
|
|
|
940
|
|
|
941 loop
|
|
|
942 Get_Next_Line;
|
|
|
943
|
|
|
944 -- Go to end when end line is reached (this will happen in
|
|
|
945 -- High_Integrity_Mode where no -L switches are generated)
|
|
|
946
|
|
|
947 exit when Next_Line (Nfirst .. Nlast) = End_Info;
|
|
|
948
|
|
|
949 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
|
|
|
950 Nlast := Nlast - 8;
|
|
|
951
|
|
|
952 -- Go to next section when switches are reached
|
|
|
953
|
|
|
954 exit when Next_Line (1) = '-';
|
|
|
955
|
|
|
956 -- Otherwise we have another object file to collect
|
|
|
957
|
|
|
958 Linker_Objects.Increment_Last;
|
|
|
959
|
|
|
960 -- Mark the positions of first and last object files in case they
|
|
|
961 -- need to be placed with a named file on systems having linker
|
|
|
962 -- line limitations.
|
|
|
963
|
|
|
964 if Objs_Begin = 0 then
|
|
|
965 Objs_Begin := Linker_Objects.Last;
|
|
|
966 end if;
|
|
|
967
|
|
|
968 Linker_Objects.Table (Linker_Objects.Last) :=
|
|
|
969 new String'(Next_Line (Nfirst .. Nlast));
|
|
|
970
|
|
|
971 -- Nlast - Nfirst + 1, for the size, plus one for the space between
|
|
|
972 -- each arguments.
|
|
|
973
|
|
|
974 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
|
|
|
975 end loop;
|
|
|
976
|
|
|
977 Objs_End := Linker_Objects.Last;
|
|
|
978
|
|
|
979 -- Continue to compute the Link_Bytes, the linker options are part of
|
|
|
980 -- command line length.
|
|
|
981
|
|
|
982 Store_File_Context;
|
|
|
983
|
|
|
984 while Next_Line (Nfirst .. Nlast) /= End_Info loop
|
|
|
985 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
|
|
|
986 Get_Next_Line;
|
|
|
987 end loop;
|
|
|
988
|
|
|
989 Rollback_File_Context;
|
|
|
990
|
|
|
991 -- On systems that have limitations on handling very long linker lines
|
|
|
992 -- we make use of the system linker option which takes a list of object
|
|
|
993 -- file names from a file instead of the command line itself. What we do
|
|
|
994 -- is to replace the list of object files by the special linker option
|
|
|
995 -- which then reads the object file list from a file instead. The option
|
|
|
996 -- to read from a file instead of the command line is only triggered if
|
|
|
997 -- a conservative threshold is passed.
|
|
|
998
|
|
|
999 if Object_List_File_Required
|
|
|
1000 or else (Object_List_File_Supported
|
|
|
1001 and then Link_Bytes > Link_Max)
|
|
|
1002 then
|
|
|
1003 -- Create a temporary file containing the Ada user object files
|
|
|
1004 -- needed by the link. This list is taken from the bind file and is
|
|
|
1005 -- output one object per line for maximal compatibility with linkers
|
|
|
1006 -- supporting this option.
|
|
|
1007
|
|
|
1008 Create_Temp_File (Tname_FD, Tname);
|
|
|
1009
|
|
|
1010 -- ??? File descriptor should be checked to not be Invalid_FD.
|
|
|
1011 -- ??? Status of Write and Close operations should be checked, and
|
|
|
1012 -- failure should occur if a status is wrong.
|
|
|
1013
|
|
|
1014 for J in Objs_Begin .. Objs_End loop
|
|
|
1015 Write_RF (Linker_Objects.Table (J).all);
|
|
|
1016
|
|
|
1017 Response_File_Objects.Increment_Last;
|
|
|
1018 Response_File_Objects.Table (Response_File_Objects.Last) :=
|
|
|
1019 Linker_Objects.Table (J);
|
|
|
1020 end loop;
|
|
|
1021
|
|
|
1022 Close (Tname_FD, Closing_Status);
|
|
|
1023
|
|
|
1024 -- Add the special objects list file option together with the name
|
|
|
1025 -- of the temporary file (removing the null character) to the objects
|
|
|
1026 -- file table.
|
|
|
1027
|
|
|
1028 Linker_Objects.Table (Objs_Begin) :=
|
|
|
1029 new String'(Object_File_Option &
|
|
|
1030 Tname (Tname'First .. Tname'Last - 1));
|
|
|
1031
|
|
|
1032 -- The slots containing these object file names are then removed
|
|
|
1033 -- from the objects table so they do not appear in the link. They are
|
|
|
1034 -- removed by moving up the linker options and non-Ada object files
|
|
|
1035 -- appearing after the Ada object list in the table.
|
|
|
1036
|
|
|
1037 declare
|
|
|
1038 N : Integer;
|
|
|
1039
|
|
|
1040 begin
|
|
|
1041 N := Objs_End - Objs_Begin + 1;
|
|
|
1042
|
|
|
1043 for J in Objs_End + 1 .. Linker_Objects.Last loop
|
|
|
1044 Linker_Objects.Table (J - N + 1) := Linker_Objects.Table (J);
|
|
|
1045 end loop;
|
|
|
1046
|
|
|
1047 Linker_Objects.Set_Last (Linker_Objects.Last - N + 1);
|
|
|
1048 end;
|
|
|
1049 end if;
|
|
|
1050
|
|
|
1051 -- Process switches and options
|
|
|
1052
|
|
|
1053 if Next_Line (Nfirst .. Nlast) /= End_Info then
|
|
|
1054 Xlinker_Was_Previous := False;
|
|
|
1055
|
|
|
1056 loop
|
|
|
1057 if Xlinker_Was_Previous
|
|
|
1058 or else Next_Line (Nfirst .. Nlast) = "-Xlinker"
|
|
|
1059 then
|
|
|
1060 Linker_Options.Increment_Last;
|
|
|
1061 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
1062 new String'(Next_Line (Nfirst .. Nlast));
|
|
|
1063
|
|
|
1064 elsif Next_Line (Nfirst .. Nlast) = "-static" then
|
|
|
1065 GNAT_Static := True;
|
|
|
1066
|
|
|
1067 elsif Next_Line (Nfirst .. Nlast) = "-shared" then
|
|
|
1068 GNAT_Shared := True;
|
|
|
1069
|
|
|
1070 -- Add binder options only if not already set on the command line.
|
|
|
1071 -- This rule is a way to control the linker options order.
|
|
|
1072
|
|
|
1073 else
|
|
|
1074 if Nlast > Nfirst + 2 and then
|
|
|
1075 Next_Line (Nfirst .. Nfirst + 1) = "-L"
|
|
|
1076 then
|
|
|
1077 -- Construct a library search path for use later to locate
|
|
|
1078 -- static gnatlib libraries.
|
|
|
1079
|
|
|
1080 if Libpath.Last > 1 then
|
|
|
1081 Libpath.Increment_Last;
|
|
|
1082 Libpath.Table (Libpath.Last) := Path_Separator;
|
|
|
1083 end if;
|
|
|
1084
|
|
|
1085 for I in Nfirst + 2 .. Nlast loop
|
|
|
1086 Libpath.Increment_Last;
|
|
|
1087 Libpath.Table (Libpath.Last) := Next_Line (I);
|
|
|
1088 end loop;
|
|
|
1089
|
|
|
1090 Linker_Options.Increment_Last;
|
|
|
1091
|
|
|
1092 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
1093 new String'(Next_Line (Nfirst .. Nlast));
|
|
|
1094
|
|
|
1095 elsif Next_Line (Nfirst .. Nlast) = "-lgnarl"
|
|
|
1096 or else Next_Line (Nfirst .. Nlast) = "-lgnat"
|
|
|
1097 or else
|
|
|
1098 Next_Line
|
|
|
1099 (1 .. Natural'Min (Nlast, 8 + Library_Version'Length)) =
|
|
|
1100 Shared_Lib ("gnarl")
|
|
|
1101 or else
|
|
|
1102 Next_Line
|
|
|
1103 (1 .. Natural'Min (Nlast, 7 + Library_Version'Length)) =
|
|
|
1104 Shared_Lib ("gnat")
|
|
|
1105 then
|
|
|
1106 -- If it is a shared library, remove the library version.
|
|
|
1107 -- We will be looking for the static version of the library
|
|
|
1108 -- as it is in the same directory as the shared version.
|
|
|
1109
|
|
|
1110 if Next_Line (Nlast - Library_Version'Length + 1 .. Nlast) =
|
|
|
1111 Library_Version
|
|
|
1112 then
|
|
|
1113 -- Set Last to point to last character before the
|
|
|
1114 -- library version.
|
|
|
1115
|
|
|
1116 Last := Nlast - Library_Version'Length - 1;
|
|
|
1117 else
|
|
|
1118 Last := Nlast;
|
|
|
1119 end if;
|
|
|
1120
|
|
|
1121 -- Given a Gnat standard library, search the library path to
|
|
|
1122 -- find the library location.
|
|
|
1123
|
|
|
1124 -- Shouldn't we abstract a proc here, we are getting awfully
|
|
|
1125 -- heavily nested ???
|
|
|
1126
|
|
|
1127 declare
|
|
|
1128 File_Path : String_Access;
|
|
|
1129
|
|
|
1130 Object_Lib_Extension : constant String :=
|
|
|
1131 Value (Object_Library_Ext_Ptr);
|
|
|
1132
|
|
|
1133 File_Name : constant String := "lib" &
|
|
|
1134 Next_Line (Nfirst + 2 .. Last) & Object_Lib_Extension;
|
|
|
1135
|
|
|
1136 Run_Path_Opt : constant String :=
|
|
|
1137 Value (Run_Path_Option_Ptr);
|
|
|
1138
|
|
|
1139 GCC_Index : Natural;
|
|
|
1140 Run_Path_Opt_Index : Natural := 0;
|
|
|
1141
|
|
|
1142 begin
|
|
|
1143 File_Path :=
|
|
|
1144 Locate_Regular_File (File_Name,
|
|
|
1145 String (Libpath.Table (1 .. Libpath.Last)));
|
|
|
1146
|
|
|
1147 if File_Path /= null then
|
|
|
1148 if GNAT_Static then
|
|
|
1149
|
|
|
1150 -- If static gnatlib found, explicitly specify to
|
|
|
1151 -- overcome possible linker default usage of shared
|
|
|
1152 -- version.
|
|
|
1153
|
|
|
1154 Linker_Options.Increment_Last;
|
|
|
1155
|
|
|
1156 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
1157 new String'(File_Path.all);
|
|
|
1158
|
|
|
1159 elsif GNAT_Shared then
|
|
|
1160 if Opt.Run_Path_Option then
|
|
|
1161
|
|
|
1162 -- If shared gnatlib desired, add appropriate
|
|
|
1163 -- system specific switch so that it can be
|
|
|
1164 -- located at runtime.
|
|
|
1165
|
|
|
1166 if Run_Path_Opt'Length /= 0 then
|
|
|
1167
|
|
|
1168 -- Output the system specific linker command
|
|
|
1169 -- that allows the image activator to find
|
|
|
1170 -- the shared library at runtime. Also add
|
|
|
1171 -- path to find libgcc_s.so, if relevant.
|
|
|
1172
|
|
|
1173 declare
|
|
|
1174 Path : String (1 .. File_Path'Length + 15);
|
|
|
1175
|
|
|
1176 Path_Last : constant Natural :=
|
|
|
1177 File_Path'Length;
|
|
|
1178
|
|
|
1179 begin
|
|
|
1180 Path (1 .. File_Path'Length) :=
|
|
|
1181 File_Path.all;
|
|
|
1182
|
|
|
1183 -- To find the location of the shared version
|
|
|
1184 -- of libgcc, we look for "gcc-lib" in the
|
|
|
1185 -- path of the library. However, this
|
|
|
1186 -- subdirectory is no longer present in
|
|
|
1187 -- recent versions of GCC. So, we look for
|
|
|
1188 -- the last subdirectory "lib" in the path.
|
|
|
1189
|
|
|
1190 GCC_Index :=
|
|
|
1191 Index (Path (1 .. Path_Last), "gcc-lib");
|
|
|
1192
|
|
|
1193 if GCC_Index /= 0 then
|
|
|
1194
|
|
|
1195 -- The shared version of libgcc is
|
|
|
1196 -- located in the parent directory.
|
|
|
1197
|
|
|
1198 GCC_Index := GCC_Index - 1;
|
|
|
1199
|
|
|
1200 else
|
|
|
1201 GCC_Index :=
|
|
|
1202 Index
|
|
|
1203 (Path (1 .. Path_Last),
|
|
|
1204 "/lib/");
|
|
|
1205
|
|
|
1206 if GCC_Index = 0 then
|
|
|
1207 GCC_Index :=
|
|
|
1208 Index (Path (1 .. Path_Last),
|
|
|
1209 Directory_Separator & "lib"
|
|
|
1210 & Directory_Separator);
|
|
|
1211 end if;
|
|
|
1212
|
|
|
1213 -- If we have found a "lib" subdir in
|
|
|
1214 -- the path to libgnat, the possible
|
|
|
1215 -- shared libgcc of interest by default
|
|
|
1216 -- is in libgcc_subdir at the same
|
|
|
1217 -- level.
|
|
|
1218
|
|
|
1219 if GCC_Index /= 0 then
|
|
|
1220 declare
|
|
|
1221 Subdir : constant String :=
|
|
|
1222 Value (Libgcc_Subdir_Ptr);
|
|
|
1223 begin
|
|
|
1224 Path
|
|
|
1225 (GCC_Index + 1 ..
|
|
|
1226 GCC_Index + Subdir'Length) :=
|
|
|
1227 Subdir;
|
|
|
1228 GCC_Index :=
|
|
|
1229 GCC_Index + Subdir'Length;
|
|
|
1230 end;
|
|
|
1231 end if;
|
|
|
1232 end if;
|
|
|
1233
|
|
|
1234 -- Look for an eventual run_path_option in
|
|
|
1235 -- the linker switches.
|
|
|
1236
|
|
|
1237 if Separate_Run_Path_Options then
|
|
|
1238 Linker_Options.Increment_Last;
|
|
|
1239 Linker_Options.Table
|
|
|
1240 (Linker_Options.Last) :=
|
|
|
1241 new String'
|
|
|
1242 (Run_Path_Opt
|
|
|
1243 & File_Path
|
|
|
1244 (1 .. File_Path'Length
|
|
|
1245 - File_Name'Length));
|
|
|
1246
|
|
|
1247 if GCC_Index /= 0 then
|
|
|
1248 Linker_Options.Increment_Last;
|
|
|
1249 Linker_Options.Table
|
|
|
1250 (Linker_Options.Last) :=
|
|
|
1251 new String'
|
|
|
1252 (Run_Path_Opt
|
|
|
1253 & Path (1 .. GCC_Index));
|
|
|
1254 end if;
|
|
|
1255
|
|
|
1256 else
|
|
|
1257 for J in reverse
|
|
|
1258 1 .. Linker_Options.Last
|
|
|
1259 loop
|
|
|
1260 if Linker_Options.Table (J) /= null
|
|
|
1261 and then
|
|
|
1262 Linker_Options.Table (J)'Length
|
|
|
1263 > Run_Path_Opt'Length
|
|
|
1264 and then
|
|
|
1265 Linker_Options.Table (J)
|
|
|
1266 (1 .. Run_Path_Opt'Length) =
|
|
|
1267 Run_Path_Opt
|
|
|
1268 then
|
|
|
1269 -- We have found an already
|
|
|
1270 -- specified run_path_option:
|
|
|
1271 -- we will add to this
|
|
|
1272 -- switch, because only one
|
|
|
1273 -- run_path_option should be
|
|
|
1274 -- specified.
|
|
|
1275
|
|
|
1276 Run_Path_Opt_Index := J;
|
|
|
1277 exit;
|
|
|
1278 end if;
|
|
|
1279 end loop;
|
|
|
1280
|
|
|
1281 -- If there is no run_path_option, we
|
|
|
1282 -- need to add one.
|
|
|
1283
|
|
|
1284 if Run_Path_Opt_Index = 0 then
|
|
|
1285 Linker_Options.Increment_Last;
|
|
|
1286 end if;
|
|
|
1287
|
|
|
1288 if GCC_Index = 0 then
|
|
|
1289 if Run_Path_Opt_Index = 0 then
|
|
|
1290 Linker_Options.Table
|
|
|
1291 (Linker_Options.Last) :=
|
|
|
1292 new String'
|
|
|
1293 (Run_Path_Opt
|
|
|
1294 & File_Path
|
|
|
1295 (1 .. File_Path'Length
|
|
|
1296 - File_Name'Length));
|
|
|
1297
|
|
|
1298 else
|
|
|
1299 Linker_Options.Table
|
|
|
1300 (Run_Path_Opt_Index) :=
|
|
|
1301 new String'
|
|
|
1302 (Linker_Options.Table
|
|
|
1303 (Run_Path_Opt_Index).all
|
|
|
1304 & Path_Separator
|
|
|
1305 & File_Path
|
|
|
1306 (1 .. File_Path'Length
|
|
|
1307 - File_Name'Length));
|
|
|
1308 end if;
|
|
|
1309
|
|
|
1310 else
|
|
|
1311 if Run_Path_Opt_Index = 0 then
|
|
|
1312 Linker_Options.Table
|
|
|
1313 (Linker_Options.Last) :=
|
|
|
1314 new String'
|
|
|
1315 (Run_Path_Opt
|
|
|
1316 & File_Path
|
|
|
1317 (1 .. File_Path'Length
|
|
|
1318 - File_Name'Length)
|
|
|
1319 & Path_Separator
|
|
|
1320 & Path (1 .. GCC_Index));
|
|
|
1321
|
|
|
1322 else
|
|
|
1323 Linker_Options.Table
|
|
|
1324 (Run_Path_Opt_Index) :=
|
|
|
1325 new String'
|
|
|
1326 (Linker_Options.Table
|
|
|
1327 (Run_Path_Opt_Index).all
|
|
|
1328 & Path_Separator
|
|
|
1329 & File_Path
|
|
|
1330 (1 .. File_Path'Length
|
|
|
1331 - File_Name'Length)
|
|
|
1332 & Path_Separator
|
|
|
1333 & Path (1 .. GCC_Index));
|
|
|
1334 end if;
|
|
|
1335 end if;
|
|
|
1336 end if;
|
|
|
1337 end;
|
|
|
1338 end if;
|
|
|
1339 end if;
|
|
|
1340
|
|
|
1341 -- Then we add the appropriate -l switch
|
|
|
1342
|
|
|
1343 Linker_Options.Increment_Last;
|
|
|
1344 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
1345 new String'(Next_Line (Nfirst .. Nlast));
|
|
|
1346 end if;
|
|
|
1347
|
|
|
1348 else
|
|
|
1349 -- If gnatlib library not found, then add it anyway in
|
|
|
1350 -- case some other mechanism may find it.
|
|
|
1351
|
|
|
1352 Linker_Options.Increment_Last;
|
|
|
1353 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
1354 new String'(Next_Line (Nfirst .. Nlast));
|
|
|
1355 end if;
|
|
|
1356 end;
|
|
|
1357 else
|
|
|
1358 Linker_Options.Increment_Last;
|
|
|
1359 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
1360 new String'(Next_Line (Nfirst .. Nlast));
|
|
|
1361 end if;
|
|
|
1362 end if;
|
|
|
1363
|
|
|
1364 Xlinker_Was_Previous := Next_Line (Nfirst .. Nlast) = "-Xlinker";
|
|
|
1365
|
|
|
1366 Get_Next_Line;
|
|
|
1367 exit when Next_Line (Nfirst .. Nlast) = End_Info;
|
|
|
1368
|
|
|
1369 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
|
|
|
1370 Nlast := Nlast - 8;
|
|
|
1371 end loop;
|
|
|
1372 end if;
|
|
|
1373
|
|
|
1374 -- If -shared was specified, invoke gcc with -shared-libgcc
|
|
|
1375
|
|
|
1376 if GNAT_Shared then
|
|
|
1377 Linker_Options.Increment_Last;
|
|
|
1378 Linker_Options.Table (Linker_Options.Last) := Shared_Libgcc;
|
|
|
1379 end if;
|
|
|
1380
|
|
|
1381 Status := fclose (Fd);
|
|
|
1382 end Process_Binder_File;
|
|
|
1383
|
|
|
1384 -----------
|
|
|
1385 -- Usage --
|
|
|
1386 -----------
|
|
|
1387
|
|
|
1388 procedure Usage is
|
|
|
1389 begin
|
|
|
1390 Write_Str ("Usage: ");
|
|
|
1391 Write_Str (Base_Command_Name.all);
|
|
|
1392 Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]");
|
|
|
1393 Write_Eol;
|
|
|
1394 Write_Eol;
|
|
|
1395 Write_Line (" mainprog.ali the ALI file of the main program");
|
|
|
1396 Write_Eol;
|
|
|
1397 Write_Eol;
|
|
|
1398 Display_Usage_Version_And_Help;
|
|
|
1399 Write_Line (" -f Force object file list to be generated");
|
|
|
1400 Write_Line (" -g Compile binder source file with debug information");
|
|
|
1401 Write_Line (" -n Do not compile the binder source file");
|
|
|
1402 Write_Line (" -P Process files for use by CodePeer");
|
|
|
1403 Write_Line (" -R Do not use a run_path_option");
|
|
|
1404 Write_Line (" -v Verbose mode");
|
|
|
1405 Write_Line (" -v -v Very verbose mode");
|
|
|
1406 Write_Eol;
|
|
|
1407 Write_Line (" -o nam Use 'nam' as the name of the executable");
|
|
|
1408 Write_Line (" -b target Compile the binder source to run on target");
|
|
|
1409 Write_Line (" -Bdir Load compiler executables from dir");
|
|
|
1410
|
|
|
1411 if Is_Supported (Map_File) then
|
|
|
1412 Write_Line (" -Mmap Create map file map");
|
|
|
1413 Write_Line (" -M Create map file mainprog.map");
|
|
|
1414 end if;
|
|
|
1415
|
|
|
1416 Write_Line (" --GCC=comp Use comp as the compiler");
|
|
|
1417 Write_Line (" --LINK=nam Use 'nam' for the linking rather than 'gcc'");
|
|
|
1418 Write_Eol;
|
|
|
1419 Write_Line (" [non-Ada-objects] list of non Ada object files");
|
|
|
1420 Write_Line (" [linker-options] other options for the linker");
|
|
|
1421 end Usage;
|
|
|
1422
|
|
|
1423 ------------------
|
|
|
1424 -- Write_Header --
|
|
|
1425 ------------------
|
|
|
1426
|
|
|
1427 procedure Write_Header is
|
|
|
1428 begin
|
|
|
1429 if Verbose_Mode then
|
|
|
1430 Write_Eol;
|
|
|
1431 Display_Version ("GNATLINK", "1995");
|
|
|
1432 end if;
|
|
|
1433 end Write_Header;
|
|
|
1434
|
|
|
1435 -----------------
|
|
|
1436 -- Write_Usage --
|
|
|
1437 -----------------
|
|
|
1438
|
|
|
1439 procedure Write_Usage is
|
|
|
1440 begin
|
|
|
1441 Write_Header;
|
|
|
1442 Usage;
|
|
|
1443 end Write_Usage;
|
|
|
1444
|
|
|
1445 -- Start of processing for Gnatlink
|
|
|
1446
|
|
|
1447 begin
|
|
|
1448 -- Add the directory where gnatlink is invoked in front of the path, if
|
|
|
1449 -- gnatlink is invoked with directory information.
|
|
|
1450
|
|
|
1451 declare
|
|
|
1452 Command : constant String := Command_Name;
|
|
|
1453 begin
|
|
|
1454 for Index in reverse Command'Range loop
|
|
|
1455 if Command (Index) = Directory_Separator then
|
|
|
1456 declare
|
|
|
1457 Absolute_Dir : constant String :=
|
|
|
1458 Normalize_Pathname
|
|
|
1459 (Command (Command'First .. Index));
|
|
|
1460
|
|
|
1461 PATH : constant String :=
|
|
|
1462 Absolute_Dir &
|
|
|
1463 Path_Separator &
|
|
|
1464 Getenv ("PATH").all;
|
|
|
1465
|
|
|
1466 begin
|
|
|
1467 Setenv ("PATH", PATH);
|
|
|
1468 end;
|
|
|
1469
|
|
|
1470 exit;
|
|
|
1471 end if;
|
|
|
1472 end loop;
|
|
|
1473 end;
|
|
|
1474
|
|
|
1475 Base_Command_Name := new String'(Base_Name (Command_Name));
|
|
|
1476 Process_Args;
|
|
|
1477
|
|
|
1478 if Argument_Count = 0
|
|
|
1479 or else (Verbose_Mode and then Argument_Count = 1)
|
|
|
1480 then
|
|
|
1481 Write_Usage;
|
|
|
1482 Exit_Program (E_Fatal);
|
|
|
1483 end if;
|
|
|
1484
|
|
|
1485 -- Initialize packages to be used
|
|
|
1486
|
|
|
1487 Csets.Initialize;
|
|
|
1488 Snames.Initialize;
|
|
|
1489
|
|
|
1490 -- We always compile with -c
|
|
|
1491
|
|
|
1492 Binder_Options_From_ALI.Increment_Last;
|
|
|
1493 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
|
1494 new String'("-c");
|
|
|
1495
|
|
|
1496 if Ali_File_Name = null then
|
|
|
1497 Exit_With_Error ("no ali file given for link");
|
|
|
1498 end if;
|
|
|
1499
|
|
|
1500 if not Is_Regular_File (Ali_File_Name.all) then
|
|
|
1501 Exit_With_Error (Ali_File_Name.all & " not found");
|
|
|
1502 end if;
|
|
|
1503
|
|
|
1504 -- Read the ALI file of the main subprogram if the binder generated file
|
|
|
1505 -- needs to be compiled and no --GCC= switch has been specified. Fetch the
|
|
|
1506 -- back end switches from this ALI file and use these switches to compile
|
|
|
1507 -- the binder generated file
|
|
|
1508
|
|
|
1509 if Compile_Bind_File and then Standard_Gcc then
|
|
|
1510 Initialize_ALI;
|
|
|
1511 Name_Len := Ali_File_Name'Length;
|
|
|
1512 Name_Buffer (1 .. Name_Len) := Ali_File_Name.all;
|
|
|
1513
|
|
|
1514 declare
|
|
|
1515 use Types;
|
|
|
1516 F : constant File_Name_Type := Name_Find;
|
|
|
1517 T : Text_Buffer_Ptr;
|
|
|
1518 A : ALI_Id;
|
|
|
1519
|
|
|
1520 begin
|
|
|
1521 -- Load the ALI file
|
|
|
1522
|
|
|
1523 T := Read_Library_Info (F, True);
|
|
|
1524
|
|
|
1525 -- Read it. Note that we ignore errors, since we only want very
|
|
|
1526 -- limited information from the ali file, and likely a slightly
|
|
|
1527 -- wrong version will be just fine, though in normal operation
|
|
|
1528 -- we don't expect this to happen.
|
|
|
1529
|
|
|
1530 A := Scan_ALI
|
|
|
1531 (F,
|
|
|
1532 T,
|
|
|
1533 Ignore_ED => False,
|
|
|
1534 Err => False,
|
|
|
1535 Ignore_Errors => True);
|
|
|
1536
|
|
|
1537 if A /= No_ALI_Id then
|
|
|
1538 for
|
|
|
1539 Index in Units.Table (ALIs.Table (A).First_Unit).First_Arg ..
|
|
|
1540 Units.Table (ALIs.Table (A).First_Unit).Last_Arg
|
|
|
1541 loop
|
|
|
1542 -- Do not compile with the front end switches. However, --RTS
|
|
|
1543 -- is to be dealt with specially because it needs to be passed
|
|
|
1544 -- to compile the file generated by the binder.
|
|
|
1545
|
|
|
1546 declare
|
|
|
1547 Arg : String_Ptr renames Args.Table (Index);
|
|
|
1548 begin
|
|
|
1549 if not Is_Front_End_Switch (Arg.all) then
|
|
|
1550 Binder_Options_From_ALI.Increment_Last;
|
|
|
1551 Binder_Options_From_ALI.Table
|
|
|
1552 (Binder_Options_From_ALI.Last) := String_Access (Arg);
|
|
|
1553
|
|
|
1554 -- GNAT doesn't support GCC's multilib mechanism when it
|
|
|
1555 -- is configured with --disable-libada. This means that,
|
|
|
1556 -- when a multilib switch is used to request a particular
|
|
|
1557 -- compilation mode, the corresponding --RTS switch must
|
|
|
1558 -- also be specified. It is convenient to eliminate the
|
|
|
1559 -- redundancy by keying the compilation mode on a single
|
|
|
1560 -- switch, namely --RTS, and have the compiler reinstate
|
|
|
1561 -- the multilib switch (see gcc-interface/lang-specs.h).
|
|
|
1562 -- This switch must be passed to the driver at link time.
|
|
|
1563
|
|
|
1564 if Arg'Length = 5
|
|
|
1565 and then Arg (Arg'First + 1 .. Arg'First + 4) = "mrtp"
|
|
|
1566 then
|
|
|
1567 Linker_Options.Increment_Last;
|
|
|
1568 Linker_Options.Table
|
|
|
1569 (Linker_Options.Last) := String_Access (Arg);
|
|
|
1570 end if;
|
|
|
1571
|
|
|
1572 elsif Arg'Length > 5
|
|
|
1573 and then Arg (Arg'First + 2 .. Arg'First + 5) = "RTS="
|
|
|
1574 then
|
|
|
1575 Binder_Options_From_ALI.Increment_Last;
|
|
|
1576 Binder_Options_From_ALI.Table
|
|
|
1577 (Binder_Options_From_ALI.Last) := String_Access (Arg);
|
|
|
1578
|
|
|
1579 -- Set the RTS_*_Path_Name variables, so that
|
|
|
1580 -- the correct directories will be set when
|
|
|
1581 -- Osint.Add_Default_Search_Dirs will be called later.
|
|
|
1582
|
|
|
1583 Opt.RTS_Src_Path_Name :=
|
|
|
1584 Get_RTS_Search_Dir
|
|
|
1585 (Arg (Arg'First + 6 .. Arg'Last), Include);
|
|
|
1586
|
|
|
1587 Opt.RTS_Lib_Path_Name :=
|
|
|
1588 Get_RTS_Search_Dir
|
|
|
1589 (Arg (Arg'First + 6 .. Arg'Last), Objects);
|
|
|
1590 end if;
|
|
|
1591 end;
|
|
|
1592 end loop;
|
|
|
1593 end if;
|
|
|
1594 end;
|
|
|
1595 end if;
|
|
|
1596
|
|
|
1597 -- Get target parameters
|
|
|
1598
|
|
|
1599 Osint.Add_Default_Search_Dirs;
|
|
|
1600 Targparm.Get_Target_Parameters;
|
|
|
1601
|
|
|
1602 -- Compile the bind file with the following switches:
|
|
|
1603
|
|
|
1604 -- -gnatA stops reading gnat.adc, since we don't know what
|
|
|
1605 -- pragmas would work, and we do not need it anyway.
|
|
|
1606
|
|
|
1607 -- -gnatWb allows brackets coding for wide characters
|
|
|
1608
|
|
|
1609 -- -gnatiw allows wide characters in identifiers. This is needed
|
|
|
1610 -- because bindgen uses brackets encoding for all upper
|
|
|
1611 -- half and wide characters in identifier names.
|
|
|
1612
|
|
|
1613 -- In addition, in CodePeer mode compile with -x adascil -gnatcC
|
|
|
1614
|
|
|
1615 Binder_Options_From_ALI.Increment_Last;
|
|
|
1616 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
|
1617 new String'("-gnatA");
|
|
|
1618 Binder_Options_From_ALI.Increment_Last;
|
|
|
1619 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
|
1620 new String'("-gnatWb");
|
|
|
1621 Binder_Options_From_ALI.Increment_Last;
|
|
|
1622 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
|
1623 new String'("-gnatiw");
|
|
|
1624
|
|
|
1625 if Opt.CodePeer_Mode then
|
|
|
1626 Binder_Options_From_ALI.Increment_Last;
|
|
|
1627 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
|
1628 new String'("-x");
|
|
|
1629 Binder_Options_From_ALI.Increment_Last;
|
|
|
1630 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
|
1631 new String'("adascil");
|
|
|
1632 Binder_Options_From_ALI.Increment_Last;
|
|
|
1633 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
|
|
|
1634 new String'("-gnatcC");
|
|
|
1635 end if;
|
|
|
1636
|
|
|
1637 -- Locate all the necessary programs and verify required files are present
|
|
|
1638
|
|
|
1639 Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all);
|
|
|
1640
|
|
|
1641 if Gcc_Path = null then
|
|
|
1642 Exit_With_Error ("Couldn't locate " & Gcc.all);
|
|
|
1643 end if;
|
|
|
1644
|
|
|
1645 if Linker_Path = null then
|
|
|
1646 Linker_Path := Gcc_Path;
|
|
|
1647 end if;
|
|
|
1648
|
|
|
1649 Write_Header;
|
|
|
1650
|
|
|
1651 Target_Debuggable_Suffix := Get_Target_Debuggable_Suffix;
|
|
|
1652
|
|
|
1653 -- If no output name specified, then use the base name of .ali file name
|
|
|
1654
|
|
|
1655 if Output_File_Name = null then
|
|
|
1656 Output_File_Name :=
|
|
|
1657 new String'(Base_Name (Ali_File_Name.all)
|
|
|
1658 & Target_Debuggable_Suffix.all);
|
|
|
1659 end if;
|
|
|
1660
|
|
|
1661 Linker_Options.Increment_Last;
|
|
|
1662 Linker_Options.Table (Linker_Options.Last) := new String'("-o");
|
|
|
1663
|
|
|
1664 Linker_Options.Increment_Last;
|
|
|
1665 Linker_Options.Table (Linker_Options.Last) :=
|
|
|
1666 new String'(Output_File_Name.all);
|
|
|
1667
|
|
|
1668 Check_Existing_Executable (Output_File_Name.all);
|
|
|
1669
|
|
|
1670 -- Warn if main program is called "test", as that may be a built-in command
|
|
|
1671 -- on Unix. On non-Unix systems executables have a suffix, so the warning
|
|
|
1672 -- will not appear. However, do not warn in the case of a cross compiler.
|
|
|
1673
|
|
|
1674 -- Assume this is a cross tool if the executable name is not gnatlink.
|
|
|
1675 -- Note that the executable name is also gnatlink on windows, but in that
|
|
|
1676 -- case the output file name will be test.exe rather than test.
|
|
|
1677
|
|
|
1678 if Base_Command_Name.all = "gnatlink"
|
|
|
1679 and then Output_File_Name.all = "test"
|
|
|
1680 then
|
|
|
1681 Error_Msg ("warning: executable name """ & Output_File_Name.all
|
|
|
1682 & """ may conflict with shell command");
|
|
|
1683 end if;
|
|
|
1684
|
|
|
1685 -- Special warnings for worrisome file names on windows
|
|
|
1686
|
|
|
1687 -- Recent versions of Windows by default cause privilege escalation if an
|
|
|
1688 -- executable file name contains substrings "install", "setup", "update"
|
|
|
1689 -- or "patch". A console application will typically fail to load as a
|
|
|
1690 -- result, so we should warn the user.
|
|
|
1691
|
|
|
1692 Bad_File_Names_On_Windows : declare
|
|
|
1693 FN : String := Output_File_Name.all;
|
|
|
1694
|
|
|
1695 procedure Check_File_Name (S : String);
|
|
|
1696 -- Warn if file name has the substring S
|
|
|
1697
|
|
|
1698 procedure Check_File_Name (S : String) is
|
|
|
1699 begin
|
|
|
1700 for J in 1 .. FN'Length - (S'Length - 1) loop
|
|
|
1701 if FN (J .. J + (S'Length - 1)) = S then
|
|
|
1702 Error_Msg
|
|
|
1703 ("warning: executable file name """ & Output_File_Name.all
|
|
|
1704 & """ contains substring """ & S & '"');
|
|
|
1705 Error_Msg
|
|
|
1706 ("admin privileges may be required to run this file");
|
|
|
1707 end if;
|
|
|
1708 end loop;
|
|
|
1709 end Check_File_Name;
|
|
|
1710
|
|
|
1711 -- Start of processing for Bad_File_Names_On_Windows
|
|
|
1712
|
|
|
1713 begin
|
|
|
1714 for J in FN'Range loop
|
|
|
1715 FN (J) := Csets.Fold_Lower (FN (J));
|
|
|
1716 end loop;
|
|
|
1717
|
|
|
1718 -- For now we detect Windows by its executable suffix of .exe
|
|
|
1719
|
|
|
1720 if Target_Debuggable_Suffix.all = ".exe" then
|
|
|
1721 Check_File_Name ("install");
|
|
|
1722 Check_File_Name ("setup");
|
|
|
1723 Check_File_Name ("update");
|
|
|
1724 Check_File_Name ("patch");
|
|
|
1725 end if;
|
|
|
1726 end Bad_File_Names_On_Windows;
|
|
|
1727
|
|
|
1728 -- If -M switch was specified, add the switches to create the map file
|
|
|
1729
|
|
|
1730 if Create_Map_File then
|
|
|
1731 declare
|
|
|
1732 Map_Name : constant String := Base_Name (Ali_File_Name.all) & ".map";
|
|
|
1733 Switches : String_List_Access;
|
|
|
1734
|
|
|
1735 begin
|
|
|
1736 Convert (Map_File, Map_Name, Switches);
|
|
|
1737
|
|
|
1738 if Switches /= null then
|
|
|
1739 for J in Switches'Range loop
|
|
|
1740 Linker_Options.Increment_Last;
|
|
|
1741 Linker_Options.Table (Linker_Options.Last) := Switches (J);
|
|
|
1742 end loop;
|
|
|
1743 end if;
|
|
|
1744 end;
|
|
|
1745 end if;
|
|
|
1746
|
|
|
1747 -- Perform consistency checks
|
|
|
1748
|
|
|
1749 -- Transform the .ali file name into the binder output file name
|
|
|
1750
|
|
|
1751 Make_Binder_File_Names : declare
|
|
|
1752 Fname : constant String := Base_Name (Ali_File_Name.all);
|
|
|
1753 Fname_Len : Integer := Fname'Length;
|
|
|
1754
|
|
|
1755 function Get_Maximum_File_Name_Length return Integer;
|
|
|
1756 pragma Import (C, Get_Maximum_File_Name_Length,
|
|
|
1757 "__gnat_get_maximum_file_name_length");
|
|
|
1758
|
|
|
1759 Maximum_File_Name_Length : constant Integer :=
|
|
|
1760 Get_Maximum_File_Name_Length;
|
|
|
1761
|
|
|
1762 Bind_File_Prefix : Types.String_Ptr;
|
|
|
1763 -- Contains prefix used for bind files
|
|
|
1764
|
|
|
1765 begin
|
|
|
1766 -- Set prefix
|
|
|
1767
|
|
|
1768 Bind_File_Prefix := new String'("b~");
|
|
|
1769
|
|
|
1770 -- If the length of the binder file becomes too long due to
|
|
|
1771 -- the addition of the "b?" prefix, then truncate it.
|
|
|
1772
|
|
|
1773 if Maximum_File_Name_Length > 0 then
|
|
|
1774 while Fname_Len >
|
|
|
1775 Maximum_File_Name_Length - Bind_File_Prefix.all'Length
|
|
|
1776 loop
|
|
|
1777 Fname_Len := Fname_Len - 1;
|
|
|
1778 end loop;
|
|
|
1779 end if;
|
|
|
1780
|
|
|
1781 declare
|
|
|
1782 Fnam : constant String :=
|
|
|
1783 Bind_File_Prefix.all &
|
|
|
1784 Fname (Fname'First .. Fname'First + Fname_Len - 1);
|
|
|
1785
|
|
|
1786 begin
|
|
|
1787 Binder_Spec_Src_File := new String'(Fnam & ".ads");
|
|
|
1788 Binder_Body_Src_File := new String'(Fnam & ".adb");
|
|
|
1789 Binder_Ali_File := new String'(Fnam & ".ali");
|
|
|
1790
|
|
|
1791 Binder_Obj_File := new String'(Fnam & Get_Target_Object_Suffix.all);
|
|
|
1792 end;
|
|
|
1793
|
|
|
1794 if Fname_Len /= Fname'Length then
|
|
|
1795 Binder_Options.Increment_Last;
|
|
|
1796 Binder_Options.Table (Binder_Options.Last) := new String'("-o");
|
|
|
1797 Binder_Options.Increment_Last;
|
|
|
1798 Binder_Options.Table (Binder_Options.Last) := Binder_Obj_File;
|
|
|
1799 end if;
|
|
|
1800 end Make_Binder_File_Names;
|
|
|
1801
|
|
|
1802 Process_Binder_File (Binder_Body_Src_File.all & ASCII.NUL);
|
|
|
1803
|
|
|
1804 -- Compile the binder file. This is fast, so we always do it, unless
|
|
|
1805 -- specifically told not to by the -n switch
|
|
|
1806
|
|
|
1807 if Compile_Bind_File then
|
|
|
1808 Bind_Step : declare
|
|
|
1809 Success : Boolean;
|
|
|
1810
|
|
|
1811 Args : Argument_List
|
|
|
1812 (1 .. Binder_Options_From_ALI.Last + Binder_Options.Last + 1);
|
|
|
1813
|
|
|
1814 begin
|
|
|
1815 for J in 1 .. Binder_Options_From_ALI.Last loop
|
|
|
1816 Args (J) := Binder_Options_From_ALI.Table (J);
|
|
|
1817 end loop;
|
|
|
1818
|
|
|
1819 for J in 1 .. Binder_Options.Last loop
|
|
|
1820 Args (Binder_Options_From_ALI.Last + J) :=
|
|
|
1821 Binder_Options.Table (J);
|
|
|
1822 end loop;
|
|
|
1823
|
|
|
1824 -- Use the full path of the binder generated source, so that it is
|
|
|
1825 -- guaranteed that the debugger will find this source, even with
|
|
|
1826 -- STABS.
|
|
|
1827
|
|
|
1828 Args (Args'Last) :=
|
|
|
1829 new String'(Normalize_Pathname (Binder_Body_Src_File.all));
|
|
|
1830
|
|
|
1831 if Verbose_Mode then
|
|
|
1832 Write_Str (Base_Name (Gcc_Path.all));
|
|
|
1833
|
|
|
1834 for J in Args'Range loop
|
|
|
1835 Write_Str (" ");
|
|
|
1836 Write_Str (Args (J).all);
|
|
|
1837 end loop;
|
|
|
1838
|
|
|
1839 Write_Eol;
|
|
|
1840 end if;
|
|
|
1841
|
|
|
1842 System.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
|
|
|
1843
|
|
|
1844 if not Success then
|
|
|
1845 Exit_Program (E_Fatal);
|
|
|
1846 end if;
|
|
|
1847 end Bind_Step;
|
|
|
1848 end if;
|
|
|
1849
|
|
|
1850 -- In CodePeer mode, there's nothing left to do after the binder file has
|
|
|
1851 -- been compiled.
|
|
|
1852
|
|
|
1853 if Opt.CodePeer_Mode then
|
|
|
1854 if Tname_FD /= Invalid_FD then
|
|
|
1855 Delete (Tname);
|
|
|
1856 end if;
|
|
|
1857
|
|
|
1858 return;
|
|
|
1859 end if;
|
|
|
1860
|
|
|
1861 -- Now, actually link the program
|
|
|
1862
|
|
|
1863 Link_Step : declare
|
|
|
1864 Num_Args : Natural :=
|
|
|
1865 (Linker_Options.Last - Linker_Options.First + 1) +
|
|
|
1866 (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) +
|
|
|
1867 (Linker_Objects.Last - Linker_Objects.First + 1);
|
|
|
1868 Stack_Op : Boolean := False;
|
|
|
1869
|
|
|
1870 begin
|
|
|
1871 -- Remove duplicate stack size setting from the Linker_Options table.
|
|
|
1872 -- The stack setting option "-Xlinker --stack=R,C" can be found
|
|
|
1873 -- in one line when set by a pragma Linker_Options or in two lines
|
|
|
1874 -- ("-Xlinker" then "--stack=R,C") when set on the command line. We
|
|
|
1875 -- also check for the "-Wl,--stack=R" style option.
|
|
|
1876
|
|
|
1877 -- We must remove the second stack setting option instance because
|
|
|
1878 -- the one on the command line will always be the first one. And any
|
|
|
1879 -- subsequent stack setting option will overwrite the previous one.
|
|
|
1880 -- This is done especially for GNAT/NT where we set the stack size
|
|
|
1881 -- for tasking programs by a pragma in the NT specific tasking
|
|
|
1882 -- package System.Task_Primitives.Operations.
|
|
|
1883
|
|
|
1884 -- Note: This is not a FOR loop that runs from Linker_Options.First
|
|
|
1885 -- to Linker_Options.Last, since operations within the loop can
|
|
|
1886 -- modify the length of the table.
|
|
|
1887
|
|
|
1888 Clean_Link_Option_Set : declare
|
|
|
1889 J : Natural;
|
|
|
1890 Shared_Libgcc_Seen : Boolean := False;
|
|
|
1891
|
|
|
1892 begin
|
|
|
1893 J := Linker_Options.First;
|
|
|
1894 while J <= Linker_Options.Last loop
|
|
|
1895 if Linker_Options.Table (J).all = "-Xlinker"
|
|
|
1896 and then J < Linker_Options.Last
|
|
|
1897 and then Linker_Options.Table (J + 1)'Length > 8
|
|
|
1898 and then Linker_Options.Table (J + 1) (1 .. 8) = "--stack="
|
|
|
1899 then
|
|
|
1900 if Stack_Op then
|
|
|
1901 Linker_Options.Table (J .. Linker_Options.Last - 2) :=
|
|
|
1902 Linker_Options.Table (J + 2 .. Linker_Options.Last);
|
|
|
1903 Linker_Options.Decrement_Last;
|
|
|
1904 Linker_Options.Decrement_Last;
|
|
|
1905 Num_Args := Num_Args - 2;
|
|
|
1906
|
|
|
1907 else
|
|
|
1908 Stack_Op := True;
|
|
|
1909 end if;
|
|
|
1910 end if;
|
|
|
1911
|
|
|
1912 -- Remove duplicate -shared-libgcc switch
|
|
|
1913
|
|
|
1914 if Linker_Options.Table (J).all = Shared_Libgcc_String then
|
|
|
1915 if Shared_Libgcc_Seen then
|
|
|
1916 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
|
|
|
1917 Linker_Options.Table (J + 1 .. Linker_Options.Last);
|
|
|
1918 Linker_Options.Decrement_Last;
|
|
|
1919 Num_Args := Num_Args - 1;
|
|
|
1920
|
|
|
1921 else
|
|
|
1922 Shared_Libgcc_Seen := True;
|
|
|
1923 end if;
|
|
|
1924 end if;
|
|
|
1925
|
|
|
1926 -- Here we just check for a canonical form that matches the
|
|
|
1927 -- pragma Linker_Options set in the NT runtime.
|
|
|
1928
|
|
|
1929 if (Linker_Options.Table (J)'Length > 17
|
|
|
1930 and then Linker_Options.Table (J) (1 .. 17) =
|
|
|
1931 "-Xlinker --stack=")
|
|
|
1932 or else
|
|
|
1933 (Linker_Options.Table (J)'Length > 12
|
|
|
1934 and then Linker_Options.Table (J) (1 .. 12) =
|
|
|
1935 "-Wl,--stack=")
|
|
|
1936 then
|
|
|
1937 if Stack_Op then
|
|
|
1938 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
|
|
|
1939 Linker_Options.Table (J + 1 .. Linker_Options.Last);
|
|
|
1940 Linker_Options.Decrement_Last;
|
|
|
1941 Num_Args := Num_Args - 1;
|
|
|
1942
|
|
|
1943 else
|
|
|
1944 Stack_Op := True;
|
|
|
1945 end if;
|
|
|
1946 end if;
|
|
|
1947
|
|
|
1948 J := J + 1;
|
|
|
1949 end loop;
|
|
|
1950
|
|
|
1951 if Linker_Path = Gcc_Path then
|
|
|
1952
|
|
|
1953 -- For systems where the default is to link statically with
|
|
|
1954 -- libgcc, if gcc is not called with -shared-libgcc, call it
|
|
|
1955 -- with -static-libgcc, as there are some platforms where one
|
|
|
1956 -- of these two switches is compulsory to link.
|
|
|
1957
|
|
|
1958 if Shared_Libgcc_Default = 'T'
|
|
|
1959 and then not Shared_Libgcc_Seen
|
|
|
1960 then
|
|
|
1961 Linker_Options.Increment_Last;
|
|
|
1962 Linker_Options.Table (Linker_Options.Last) := Static_Libgcc;
|
|
|
1963 Num_Args := Num_Args + 1;
|
|
|
1964 end if;
|
|
|
1965 end if;
|
|
|
1966 end Clean_Link_Option_Set;
|
|
|
1967
|
|
|
1968 -- Prepare arguments for call to linker
|
|
|
1969
|
|
|
1970 Call_Linker : declare
|
|
|
1971 Success : Boolean;
|
|
|
1972 Args : Argument_List (1 .. Num_Args + 1);
|
|
|
1973 Index : Integer := Args'First;
|
|
|
1974
|
|
|
1975 begin
|
|
|
1976 Args (Index) := Binder_Obj_File;
|
|
|
1977
|
|
|
1978 -- Add the object files and any -largs libraries
|
|
|
1979
|
|
|
1980 for J in Linker_Objects.First .. Linker_Objects.Last loop
|
|
|
1981 Index := Index + 1;
|
|
|
1982 Args (Index) := Linker_Objects.Table (J);
|
|
|
1983 end loop;
|
|
|
1984
|
|
|
1985 -- Add the linker options from the binder file
|
|
|
1986
|
|
|
1987 for J in Linker_Options.First .. Linker_Options.Last loop
|
|
|
1988 Index := Index + 1;
|
|
|
1989 Args (Index) := Linker_Options.Table (J);
|
|
|
1990 end loop;
|
|
|
1991
|
|
|
1992 -- Finally add the libraries from the --GCC= switch
|
|
|
1993
|
|
|
1994 for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop
|
|
|
1995 Index := Index + 1;
|
|
|
1996 Args (Index) := Gcc_Linker_Options.Table (J);
|
|
|
1997 end loop;
|
|
|
1998
|
|
|
1999 if Verbose_Mode then
|
|
|
2000 Write_Str (Linker_Path.all);
|
|
|
2001
|
|
|
2002 for J in Args'Range loop
|
|
|
2003 Write_Str (" ");
|
|
|
2004 Write_Str (Args (J).all);
|
|
|
2005 end loop;
|
|
|
2006
|
|
|
2007 Write_Eol;
|
|
|
2008
|
|
|
2009 -- If we are on very verbose mode (-v -v) and a response file
|
|
|
2010 -- is used we display its content.
|
|
|
2011
|
|
|
2012 if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then
|
|
|
2013 Write_Eol;
|
|
|
2014 Write_Str ("Response file (" &
|
|
|
2015 Tname (Tname'First .. Tname'Last - 1) &
|
|
|
2016 ") content : ");
|
|
|
2017 Write_Eol;
|
|
|
2018
|
|
|
2019 for J in
|
|
|
2020 Response_File_Objects.First .. Response_File_Objects.Last
|
|
|
2021 loop
|
|
|
2022 Write_Str (Response_File_Objects.Table (J).all);
|
|
|
2023 Write_Eol;
|
|
|
2024 end loop;
|
|
|
2025
|
|
|
2026 Write_Eol;
|
|
|
2027 end if;
|
|
|
2028 end if;
|
|
|
2029
|
|
|
2030 System.OS_Lib.Spawn (Linker_Path.all, Args, Success);
|
|
|
2031
|
|
|
2032 -- Delete the temporary file used in conjunction with linking if one
|
|
|
2033 -- was created. See Process_Bind_File for details.
|
|
|
2034
|
|
|
2035 if Tname_FD /= Invalid_FD then
|
|
|
2036 Delete (Tname);
|
|
|
2037 end if;
|
|
|
2038
|
|
|
2039 if not Success then
|
|
|
2040 Error_Msg ("error when calling " & Linker_Path.all);
|
|
|
2041 Exit_Program (E_Fatal);
|
|
|
2042 end if;
|
|
|
2043 end Call_Linker;
|
|
|
2044 end Link_Step;
|
|
|
2045
|
|
|
2046 -- Only keep the binder output file and it's associated object
|
|
|
2047 -- file if compiling with the -g option. These files are only
|
|
|
2048 -- useful if debugging.
|
|
|
2049
|
|
|
2050 if not Debug_Flag_Present then
|
|
|
2051 Delete (Binder_Ali_File.all & ASCII.NUL);
|
|
|
2052 Delete (Binder_Spec_Src_File.all & ASCII.NUL);
|
|
|
2053 Delete (Binder_Body_Src_File.all & ASCII.NUL);
|
|
|
2054 Delete (Binder_Obj_File.all & ASCII.NUL);
|
|
|
2055 end if;
|
|
|
2056
|
|
|
2057 Exit_Program (E_Success);
|
|
|
2058
|
|
|
2059 exception
|
|
|
2060 when X : others =>
|
|
|
2061 Write_Line (Exception_Information (X));
|
|
|
2062 Exit_With_Error ("INTERNAL ERROR. Please report");
|
|
|
2063 end Gnatlink;
|
