libada/configure.ac

   1 # Configure script for libada.
   2 #   Copyright (C) 2003-2021 Free Software Foundation, Inc.
   3 #
   4 # This file is free software; you can redistribute it and/or modify it
   5 # under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful, but
  10 # WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; see the file COPYING3.  If not see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 sinclude(../config/acx.m4)
  19 sinclude(../config/multi.m4)
  20 sinclude(../config/override.m4)
  21 sinclude(../config/picflag.m4)
  22 sinclude(../config/toolexeclibdir.m4)
  23 sinclude(../config/unwind_ipinfo.m4)
  24
  25 AC_INIT
  26
  27 AC_CONFIG_SRCDIR([Makefile.in])
  28
  29 # Determine the host, build, and target systems
  30 AC_CANONICAL_BUILD
  31 AC_CANONICAL_HOST
  32 AC_CANONICAL_TARGET
  33 target_alias=${target_alias-$host_alias}
  34
  35 # Determine the noncanonical target name, for directory use.
  36 ACX_NONCANONICAL_TARGET
  37
  38 # Determine the target- and build-specific subdirectories
  39 GCC_TOPLEV_SUBDIRS
  40
  41 # Command-line options.
  42
  43 AC_ARG_ENABLE(version-specific-runtime-libs,
  44   [AS_HELP_STRING([--enable-version-specific-runtime-libs],
  45                   [specify that runtime libraries should be
  46                    installed in a compiler-specific directory])],
  47   [case "$enableval" in
  48      yes|no)
  49        ;;
  50      *)
  51        AC_MSG_ERROR([--enable-version-specific-runtime-libs must be yes or no])
  52        ;;
  53    esac],
  54   [enable_version_specific_runtime_libs=yes]
  55 )
  56
  57 # Very limited version of AC_MAINTAINER_MODE.
  58 AC_ARG_ENABLE([maintainer-mode],
  59   [AC_HELP_STRING([--enable-maintainer-mode],
  60                  [enable make rules and dependencies not useful (and
  61                   sometimes confusing) to the casual installer])],
  62   [case ${enable_maintainer_mode} in
  63      yes) MAINT='' ;;
  64      no) MAINT='#' ;;
  65      *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
  66    esac
  67    maintainer_mode=${enableval}],
  68   [MAINT='#'])
  69 AC_SUBST([MAINT])dnl
  70
  71 GCC_WITH_TOOLEXECLIBDIR
  72
  73 AM_ENABLE_MULTILIB(, ..)
  74 # Calculate toolexeclibdir
  75 # Also toolexecdir, though it's only used in toolexeclibdir
  76 case ${enable_version_specific_runtime_libs} in
  77   yes)
  78     # Need the gcc compiler version to know where to install libraries
  79     # and header files if --enable-version-specific-runtime-libs option
  80     # is selected.
  81     toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
  82     toolexeclibdir='$(toolexecdir)/$(version)$(MULTISUBDIR)/adalib'
  83     ;;
  84   no)
  85     if test -n "$with_cross_host" &&
  86        test x"$with_cross_host" != x"no"; then
  87       # Install a library built with a cross compiler in tooldir, not libdir.
  88       toolexecdir='$(exec_prefix)/$(target_alias)'
  89       case ${with_toolexeclibdir} in
  90         no)
  91           toolexeclibdir='$(toolexecdir)/lib'
  92           ;;
  93         *)
  94           toolexeclibdir=${with_toolexeclibdir}
  95           ;;
  96       esac
  97     else
  98       toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
  99       toolexeclibdir='$(libdir)'
 100     fi
 101     multi_os_directory=`$CC -print-multi-os-directory`
 102     case $multi_os_directory in
 103       .) ;; # Avoid trailing /.
 104       *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
 105     esac
 106     ;;
 107 esac
 108 AC_SUBST(toolexecdir)
 109 AC_SUBST(toolexeclibdir)
 110
 111 # Check the compiler.
 112 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
 113 # We must force CC to /not/ be precious variables; otherwise
 114 # the wrong, non-multilib-adjusted value will be used in multilibs.
 115 # As a side effect, we have to subst CFLAGS ourselves.
 116
 117 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
 118 m4_define([_AC_ARG_VAR_PRECIOUS],[])
 119 AC_PROG_CC
 120 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
 121
 122 AC_SUBST(CFLAGS)
 123
 124 AC_ARG_ENABLE([shared],
 125 [AC_HELP_STRING([--disable-shared],
 126                 [don't provide a shared libgnat])],
 127 [
 128 case $enable_shared in
 129   yes | no) ;;
 130   *)
 131     enable_shared=no
 132     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 133     for pkg in $enableval; do
 134       case $pkg in
 135         ada | libada)
 136           enable_shared=yes ;;
 137       esac
 138     done
 139     IFS="$ac_save_ifs"
 140     ;;
 141 esac
 142 ], [enable_shared=yes])
 143 AC_SUBST([enable_shared])
 144
 145 GCC_PICFLAG
 146 AC_SUBST([PICFLAG])
 147
 148 # These must be passed down, or are needed by gcc/libgcc.mvars
 149 AC_PROG_AWK
 150 AC_PROG_LN_S
 151
 152 # Determine what to build for 'gnatlib'
 153 if test ${enable_shared} = yes; then
 154   default_gnatlib_target="gnatlib-shared"
 155 else
 156   default_gnatlib_target="gnatlib"
 157 fi
 158 AC_SUBST([default_gnatlib_target])
 159
 160 # Check for _Unwind_GetIPInfo
 161 GCC_CHECK_UNWIND_GETIPINFO
 162 if test x$have_unwind_getipinfo = xyes; then
 163   have_getipinfo=-DHAVE_GETIPINFO
 164 else
 165   have_getipinfo=
 166 fi
 167 AC_SUBST([have_getipinfo])
 168
 169 # Check for <sys/capability.h>
 170 AC_CHECK_HEADER([sys/capability.h], have_capability=-DHAVE_CAPABILITY, have_capability=)
 171 AC_SUBST([have_capability])
 172
 173 # Determine what GCC version number to use in filesystem paths.
 174 GCC_BASE_VER
 175
 176 # Output: create a Makefile.
 177 AC_CONFIG_FILES([Makefile])
 178
 179 AC_OUTPUT