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1 # Configure script for libada.
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2 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
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3 #
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4 # This file is free software; you can redistribute it and/or modify it
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5 # under the terms of the GNU General Public License as published by
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6 # the Free Software Foundation; either version 3 of the License, or
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7 # (at your option) any later version.
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8 #
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9 # This program is distributed in the hope that it will be useful, but
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10 # WITHOUT ANY WARRANTY; without even the implied warranty of
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11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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12 # General Public License for more details.
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13 #
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14 # You should have received a copy of the GNU General Public License
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15 # along with this program; see the file COPYING3. If not see
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16 # <http://www.gnu.org/licenses/>.
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17
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18 sinclude(../config/acx.m4)
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19 sinclude(../config/multi.m4)
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20 sinclude(../config/override.m4)
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21 sinclude(../config/picflag.m4)
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22 sinclude(../config/unwind_ipinfo.m4)
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23
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24 AC_INIT
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25 AC_PREREQ([2.64])
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26
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27 AC_CONFIG_SRCDIR([Makefile.in])
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28
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29 # Determine the host, build, and target systems
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30 AC_CANONICAL_BUILD
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31 AC_CANONICAL_HOST
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32 AC_CANONICAL_TARGET
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33 target_alias=${target_alias-$host_alias}
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34
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35 # Determine the noncanonical target name, for directory use.
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36 ACX_NONCANONICAL_TARGET
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37
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38 # Determine the target- and build-specific subdirectories
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39 GCC_TOPLEV_SUBDIRS
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40
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41 # Command-line options.
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42 # Very limited version of AC_MAINTAINER_MODE.
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43 AC_ARG_ENABLE([maintainer-mode],
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44 [AC_HELP_STRING([--enable-maintainer-mode],
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45 [enable make rules and dependencies not useful (and
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46 sometimes confusing) to the casual installer])],
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47 [case ${enable_maintainer_mode} in
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48 yes) MAINT='' ;;
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49 no) MAINT='#' ;;
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50 *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
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51 esac
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52 maintainer_mode=${enableval}],
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53 [MAINT='#'])
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54 AC_SUBST([MAINT])dnl
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55
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56 AM_ENABLE_MULTILIB(, ..)
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57 # Calculate toolexeclibdir
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58 # Also toolexecdir, though it's only used in toolexeclibdir
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59 case ${enable_version_specific_runtime_libs} in
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60 yes)
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61 # Need the gcc compiler version to know where to install libraries
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62 # and header files if --enable-version-specific-runtime-libs option
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63 # is selected.
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64 toolexecdir='$(libdir)/gcc/$(target_alias)'
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65 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
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66 ;;
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67 no)
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68 if test -n "$with_cross_host" &&
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69 test x"$with_cross_host" != x"no"; then
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70 # Install a library built with a cross compiler in tooldir, not libdir.
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71 toolexecdir='$(exec_prefix)/$(target_alias)'
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72 toolexeclibdir='$(toolexecdir)/lib'
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73 else
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74 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
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75 toolexeclibdir='$(libdir)'
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76 fi
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77 multi_os_directory=`$CC -print-multi-os-directory`
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78 case $multi_os_directory in
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79 .) ;; # Avoid trailing /.
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80 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
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81 esac
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82 ;;
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83 esac
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84 AC_SUBST(toolexecdir)
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85 AC_SUBST(toolexeclibdir)
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86 #TODO: toolexeclibdir is currently disregarded
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87
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88 # Check the compiler.
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89 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
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90 # We must force CC to /not/ be precious variables; otherwise
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91 # the wrong, non-multilib-adjusted value will be used in multilibs.
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92 # As a side effect, we have to subst CFLAGS ourselves.
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93
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94 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
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95 m4_define([_AC_ARG_VAR_PRECIOUS],[])
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96 AC_PROG_CC
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97 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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98
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99 AC_SUBST(CFLAGS)
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100
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101 AC_ARG_ENABLE([shared],
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102 [AC_HELP_STRING([--disable-shared],
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103 [don't provide a shared libgnat])],
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104 [
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105 case $enable_shared in
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106 yes | no) ;;
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107 *)
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108 enable_shared=no
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109 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
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110 for pkg in $enableval; do
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111 case $pkg in
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112 ada | libada)
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113 enable_shared=yes ;;
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114 esac
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115 done
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116 IFS="$ac_save_ifs"
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117 ;;
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118 esac
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119 ], [enable_shared=yes])
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120 AC_SUBST([enable_shared])
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121
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122 GCC_PICFLAG
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123 AC_SUBST([PICFLAG])
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124
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125 # These must be passed down, or are needed by gcc/libgcc.mvars
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126 AC_PROG_AWK
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127 AC_PROG_LN_S
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128
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129 # Determine what to build for 'gnatlib'
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130 if test ${enable_shared} = yes; then
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131 default_gnatlib_target="gnatlib-shared"
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132 else
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133 default_gnatlib_target="gnatlib-plain"
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134 fi
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135 AC_SUBST([default_gnatlib_target])
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136
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137 # Check for _Unwind_GetIPInfo
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138 GCC_CHECK_UNWIND_GETIPINFO
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139 if test x$have_unwind_getipinfo = xyes; then
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140 have_getipinfo=-DHAVE_GETIPINFO
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141 else
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142 have_getipinfo=
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143 fi
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144 AC_SUBST([have_getipinfo])
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145
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146 # Check for <sys/capability.h>
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147 AC_CHECK_HEADER([sys/capability.h], have_capability=-DHAVE_CAPABILITY, have_capability=)
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148 AC_SUBST([have_capability])
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149
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150 # Determine what GCC version number to use in filesystem paths.
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151 GCC_BASE_VER
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152
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153 # Output: create a Makefile.
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154 AC_CONFIG_FILES([Makefile])
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155
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156 AC_OUTPUT
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