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111
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1 # Process this file with autoconf to produce a configure script.
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2 # Copyright (C) 1994-2017 Free Software Foundation, Inc.
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3 # Originally contributed by Dave Love (d.love@dl.ac.uk).
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4 #
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5 #This file is part of GCC.
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6 #
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7 #GCC is free software; you can redistribute it and/or modify
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8 #it under the terms of the GNU General Public License as published by
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9 #the Free Software Foundation; either version 3, or (at your option)
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10 #any later version.
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11 #
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12 #GCC is distributed in the hope that it will be useful,
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13 #but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 #GNU General Public License for more details.
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16 #
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17 #You should have received a copy of the GNU General Public License
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18 #along with GCC; see the file COPYING3. If not see
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19 #<http://www.gnu.org/licenses/>.
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20
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21 AC_PREREQ(2.64)
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22 AC_INIT(package-unused, version-unused,, libobjc)
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23 AC_CONFIG_SRCDIR([objc/objc.h])
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24 GCC_TOPLEV_SUBDIRS
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25
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26 # We need the following definitions because AC_PROG_LIBTOOL relies on them
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27 PACKAGE=libobjc
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28 # Version is pulled out to make it a bit easier to change using sed.
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29 VERSION=4:0:0
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30 AC_SUBST(VERSION)
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31
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32 # This works around the fact that libtool configuration may change LD
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33 # for this particular configuration, but some shells, instead of
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34 # keeping the changes in LD private, export them just because LD is
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35 # exported.
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36 ORIGINAL_LD_FOR_MULTILIBS=$LD
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37
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38 # -------
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39 # Options
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40 # -------
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41
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42 # We use these options to decide which functions to include.
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43 AC_ARG_WITH(target-subdir,
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44 [ --with-target-subdir=SUBDIR
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45 configuring in a subdirectory])
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46 AC_ARG_WITH(cross-host,
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47 [ --with-cross-host=HOST configuring with a cross compiler])
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48
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49 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
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50 AC_ARG_ENABLE(version-specific-runtime-libs,
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51 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
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52 [case "$enableval" in
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53 yes) version_specific_libs=yes ;;
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54 no) version_specific_libs=no ;;
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55 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
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56 esac],
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57 [version_specific_libs=no])
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58 AC_MSG_RESULT($version_specific_libs)
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59
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60 # -----------
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61 # Directories
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62 # -----------
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63
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64 # Find the rest of the source tree framework.
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65 AM_ENABLE_MULTILIB(, ..)
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66
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67 AC_CANONICAL_SYSTEM
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68 ACX_NONCANONICAL_TARGET
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69
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70 # Export source directory.
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71 # These need to be absolute paths, yet at the same time need to
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72 # canonicalize only relative paths, because then amd will not unmount
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73 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
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74 case $srcdir in
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75 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
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76 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
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77 esac
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78 AC_SUBST(glibcpp_srcdir)
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79
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80 # Calculate toolexeclibdir
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81 # Also toolexecdir, though it's only used in toolexeclibdir
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82 case ${version_specific_libs} in
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83 yes)
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84 # Need the gcc compiler version to know where to install libraries
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85 # and header files if --enable-version-specific-runtime-libs option
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86 # is selected.
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87 toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
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88 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
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89 ;;
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90 no)
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91 if test -n "$with_cross_host" &&
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92 test x"$with_cross_host" != x"no"; then
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93 # Install a library built with a cross compiler in tooldir, not libdir.
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94 toolexecdir='$(exec_prefix)/$(target_noncanonical)'
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95 toolexeclibdir='$(toolexecdir)/lib'
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96 else
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97 toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
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98 toolexeclibdir='$(libdir)'
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99 fi
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100 multi_os_directory=`$CC -print-multi-os-directory`
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101 case $multi_os_directory in
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102 .) ;; # Avoid trailing /.
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103 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
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104 esac
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105 ;;
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106 esac
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107 AC_SUBST(toolexecdir)
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108 AC_SUBST(toolexeclibdir)
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109
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110 # Figure out if we want to name the include directory and the
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111 # library name changes differently.
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112 includedirname=include
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113 libsuffix=
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114 case "${host}" in
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115 *-darwin*)
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116 # Darwin is the only target so far that needs a different include directory.
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117 includedirname=include-gnu-runtime
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118 libsuffix=-gnu
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119 ;;
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120 esac
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121 AC_SUBST(includedirname)
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122 AC_SUBST(libsuffix)
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123
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124 AC_CONFIG_HEADERS(config.h)
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125
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126 # --------
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127 # Programs
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128 # --------
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129
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130 GCC_NO_EXECUTABLES
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131
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132 # We must force CC to /not/ be a precious variable; otherwise
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133 # the wrong, non-multilib-adjusted value will be used in multilibs.
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134 # As a side effect, we have to subst CFLAGS ourselves.
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135 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
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136 m4_define([_AC_ARG_VAR_PRECIOUS],[])
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137 AC_PROG_CC
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138 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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139
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140 # extra LD Flags which are required for targets
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141 ACX_LT_HOST_FLAGS
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142 case "${host}" in
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143 *-darwin*)
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144 # Darwin needs -single_module when linking libobjc
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145 extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module'
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146 ;;
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147 *-cygwin*|*-mingw*)
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148 # Tell libtool to build DLLs on Windows
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149 extra_ldflags_libobjc='$(lt_host_flags)'
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150 ;;
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151 esac
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152 AC_SUBST(extra_ldflags_libobjc)
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153
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154 AC_SUBST(CFLAGS)
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155
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156 AC_CHECK_TOOL(AS, as)
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157 AC_CHECK_TOOL(AR, ar)
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158 AC_CHECK_TOOL(RANLIB, ranlib, :)
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159 AC_PROG_INSTALL
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160
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161 AM_MAINTAINER_MODE
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162
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163 # Enable Win32 DLL on MS Windows - FIXME
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164 AC_LIBTOOL_WIN32_DLL
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165
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166 AC_PROG_LIBTOOL
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167
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168 AM_PROG_CC_C_O
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169
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170 AC_PROG_MAKE_SET
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171
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172 # -------
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173 # Headers
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174 # -------
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175
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176 # Sanity check for the cross-compilation case:
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177 AC_CHECK_HEADER(stdio.h,:,
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178 [AC_MSG_ERROR([Can't find stdio.h.
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179 You must have a usable C system for the target already installed, at least
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180 including headers and, preferably, the library, before you can configure
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181 the Objective C runtime system. If necessary, install gcc now with
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182 \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
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183
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184 AC_HEADER_STDC
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185
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186 AC_CHECK_HEADERS(sched.h)
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187
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188 # -----------
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189 # Miscellanea
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190 # -----------
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191
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192 # Check if we have thread-local storage
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193 GCC_CHECK_TLS
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194
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195 gt_BITFIELD_TYPE_MATTERS
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196
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197 # -----------
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198 # boehm-gc
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199 # -----------
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200
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201 AC_ARG_ENABLE(objc-gc,
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202 [AS_HELP_STRING([--enable-objc-gc],
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203 [enable use of Boehm's garbage collector with the
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204 GNU Objective-C runtime])],,enable_objc_gc=no)
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205 AC_ARG_WITH([target-bdw-gc],
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206 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
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207 [specify prefix directory for installed bdw-gc package.
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208 Equivalent to --with-target-bdw-gc-include=PATH/include
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209 plus --with-target-bdw-gc-lib=PATH/lib])])
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210 AC_ARG_WITH([target-bdw-gc-include],
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211 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
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212 [specify directories for installed bdw-gc include files])])
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213 AC_ARG_WITH([target-bdw-gc-lib],
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214 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
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215 [specify directories for installed bdw-gc library])])
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216
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217 case "$enable_objc_gc" in
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218 no)
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219 use_bdw_gc=no
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220 ;;
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221 *)
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222 AC_MSG_CHECKING([for bdw garbage collector])
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223 if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
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224 dnl no bdw-gw options, assuming bdw-gc in default locations
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225 BDW_GC_CFLAGS=
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226 BDW_GC_LIBS="-lgc"
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227 else
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228 dnl bdw-gw options passed by configure flags
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229 if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
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230 AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
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231 elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
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232 AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
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233 else
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234 AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
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235 fi
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236 mldir=`${CC-gcc} --print-multi-directory 2>/dev/null`
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237 bdw_val=
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238 if test "x$with_target_bdw_gc" != x; then
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239 for i in `echo $with_target_bdw_gc | tr ',' ' '`; do
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240 case "$i" in
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241 *=*) sd=${i%%=*}; d=${i#*=} ;;
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242 *) sd=.; d=$i ;;
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243 esac
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244 if test "$mldir" = "$sd"; then
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245 bdw_val=$d
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246 fi
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247 done
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248 if test "x$bdw_val" = x; then
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249 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc])
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250 fi
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251 bdw_inc_dir="$bdw_val/include"
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252 bdw_lib_dir="$bdw_val/lib"
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253 fi
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254 bdw_val=
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255 if test "x$with_target_bdw_gc_include" != x; then
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256 for i in `echo $with_target_bdw_gc_include | tr ',' ' '`; do
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257 case "$i" in
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258 *=*) sd=${i%%=*}; d=${i#*=} ;;
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259 *) sd=.; d=$i; fallback=$i ;;
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260 esac
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261 if test "$mldir" = "$sd"; then
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262 bdw_val=$d
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263 fi
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264 done
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265 if test "x$bdw_val" = x && test "x$bdw_inc_dir" = x && test "x$fallback" != x; then
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266 bdw_inc_dir="$fallback"
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267 elif test "x$bdw_val" = x; then
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268 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
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269 else
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270 bdw_inc_dir="$bdw_val"
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271 fi
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272 fi
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273 bdw_val=
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274 if test "x$with_target_bdw_gc_lib" != x; then
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275 for i in `echo $with_target_bdw_gc_lib | tr ',' ' '`; do
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276 case "$i" in
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277 *=*) sd=${i%%=*}; d=${i#*=} ;;
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278 *) sd=.; d=$i ;;
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279 esac
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280 if test "$mldir" = "$sd"; then
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281 bdw_val=$d
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282 fi
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283 done
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284 if test "x$bdw_val" = x; then
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285 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
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286 fi
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287 bdw_lib_dir="$bdw_val"
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288 fi
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289 if test "x$bdw_inc_dir" = x; then
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290 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
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291 fi
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292 if test "x$bdw_lib_dir" = x; then
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293 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
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294 fi
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295 BDW_GC_CFLAGS="-I$bdw_inc_dir"
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296 if test -f $bdw_lib_dir/libgc.la; then
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297 BDW_GC_LIBS="$bdw_lib_dir/libgc.la"
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298 else
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299 BDW_GC_LIBS="-L$bdw_lib_dir -lgc"
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300 fi
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301 AC_MSG_RESULT([found])
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302 fi
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303
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304 case "$BDW_GC_LIBS" in
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305 *libgc.la)
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306 use_bdw_gc=yes
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307 ;;
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308 *)
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309 AC_MSG_CHECKING([for system boehm-gc])
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310 save_CFLAGS=$CFLAGS
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311 save_LIBS=$LIBS
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312 CFLAGS="$CFLAGS $BDW_GC_CFLAGS"
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313 LIBS="$LIBS $BDW_GC_LIBS"
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314 dnl the link test is not good enough for ARM32 multilib detection,
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315 dnl first check to link, then to run
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316 AC_LINK_IFELSE(
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317 [AC_LANG_PROGRAM([#include <gc/gc.h>],[GC_init()])],
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318 [
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319 AC_RUN_IFELSE([AC_LANG_SOURCE([[
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320 #include <gc/gc.h>
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321 int main() {
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322 GC_init();
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323 return 0;
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324 }
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325 ]])],
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326 [system_bdw_gc_found=yes],
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327 [system_bdw_gc_found=no],
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328 dnl assume no system boehm-gc for cross builds ...
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329 [system_bdw_gc_found=no]
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330 )
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331 ],
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332 [system_bdw_gc_found=no])
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333 CFLAGS=$save_CFLAGS
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334 LIBS=$save_LIBS
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335 if test x$enable_objc_gc = xauto && test x$system_bdw_gc_found = xno; then
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336 AC_MSG_WARN([system bdw-gc not found, not building libobjc_gc])
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337 use_bdw_gc=no
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338 elif test x$enable_objc_gc = xyes && test x$system_bdw_gc_found = xno; then
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339 AC_MSG_ERROR([system bdw-gc required but not found])
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340 else
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341 use_bdw_gc=yes
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342 AC_MSG_RESULT([found])
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343 fi
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344 esac
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345 esac
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346
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347 if test "$use_bdw_gc" = no; then
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348 OBJC_GCFLAGS=''
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349 OBJC_BOEHM_GC=''
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350 OBJC_BOEHM_GC_INCLUDES=''
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351 OBJC_BOEHM_GC_LIBS=''
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352 else
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353 OBJC_GCFLAGS='-DOBJC_WITH_GC=1'
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354 OBJC_BOEHM_GC='libobjc_gc$(libsuffix).la'
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355 OBJC_BOEHM_GC_INCLUDES=$BDW_GC_CFLAGS
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356 OBJC_BOEHM_GC_LIBS=$BDW_GC_LIBS
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357 fi
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358 AC_SUBST(OBJC_GCFLAGS)
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359 AC_SUBST(OBJC_BOEHM_GC)
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360 AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
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361 AC_SUBST(OBJC_BOEHM_GC_LIBS)
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362
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363 # Determine what GCC version number to use in filesystem paths.
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364 GCC_BASE_VER
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365
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366 # ------
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367 # Output
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368 # ------
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369
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370 if test ${multilib} = yes; then
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371 multilib_arg="--enable-multilib"
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372 else
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373 multilib_arg=
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374 fi
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375
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376 AC_CONFIG_FILES([Makefile])
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377 AC_OUTPUT
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