libada/configure.ac

   1 # Configure script for libada.
   2 #   Copyright (C) 2003-2014 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/unwind_ipinfo.m4)
  23
  24 AC_INIT
  25 AC_PREREQ([2.64])
  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 # Very limited version of AC_MAINTAINER_MODE.
  43 AC_ARG_ENABLE([maintainer-mode],
  44   [AC_HELP_STRING([--enable-maintainer-mode],
  45                  [enable make rules and dependencies not useful (and
  46                   sometimes confusing) to the casual installer])],
  47   [case ${enable_maintainer_mode} in
  48      yes) MAINT='' ;;
  49      no) MAINT='#' ;;
  50      *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
  51    esac
  52    maintainer_mode=${enableval}],
  53   [MAINT='#'])
  54 AC_SUBST([MAINT])dnl
  55
  56 AM_ENABLE_MULTILIB(, ..)
  57 # Calculate toolexeclibdir
  58 # Also toolexecdir, though it's only used in toolexeclibdir
  59 case ${enable_version_specific_runtime_libs} in
  60   yes)
  61     # Need the gcc compiler version to know where to install libraries
  62     # and header files if --enable-version-specific-runtime-libs option
  63     # is selected.
  64     toolexecdir='$(libdir)/gcc/$(target_alias)'
  65     toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
  66     ;;
  67   no)
  68     if test -n "$with_cross_host" &&
  69        test x"$with_cross_host" != x"no"; then
  70       # Install a library built with a cross compiler in tooldir, not libdir.
  71       toolexecdir='$(exec_prefix)/$(target_alias)'
  72       toolexeclibdir='$(toolexecdir)/lib'
  73     else
  74       toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
  75       toolexeclibdir='$(libdir)'
  76     fi
  77     multi_os_directory=`$CC -print-multi-os-directory`
  78     case $multi_os_directory in
  79       .) ;; # Avoid trailing /.
  80       *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
  81     esac
  82     ;;
  83 esac
  84 AC_SUBST(toolexecdir)
  85 AC_SUBST(toolexeclibdir)
  86 #TODO: toolexeclibdir is currently disregarded
  87
  88 # Check the compiler.
  89 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
  90 # We must force CC to /not/ be precious variables; otherwise
  91 # the wrong, non-multilib-adjusted value will be used in multilibs.
  92 # As a side effect, we have to subst CFLAGS ourselves.
  93
  94 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
  95 m4_define([_AC_ARG_VAR_PRECIOUS],[])
  96 AC_PROG_CC
  97 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
  98
  99 AC_SUBST(CFLAGS)
 100
 101 AC_ARG_ENABLE([shared],
 102 [AC_HELP_STRING([--disable-shared],
 103                 [don't provide a shared libgnat])],
 104 [
 105 case $enable_shared in
 106   yes | no) ;;
 107   *)
 108     enable_shared=no
 109     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 110     for pkg in $enableval; do
 111       case $pkg in
 112         ada | libada)
 113           enable_shared=yes ;;
 114       esac
 115     done
 116     IFS="$ac_save_ifs"
 117     ;;
 118 esac
 119 ], [enable_shared=yes])
 120 AC_SUBST([enable_shared])
 121
 122 GCC_PICFLAG
 123 AC_SUBST([PICFLAG])
 124
 125 # These must be passed down, or are needed by gcc/libgcc.mvars
 126 AC_PROG_AWK
 127 AC_PROG_LN_S
 128
 129 # Determine what to build for 'gnatlib'
 130 if test $build = $target \
 131    && test ${enable_shared} = yes ; then
 132   # Note that build=target is almost certainly the wrong test; FIXME
 133   default_gnatlib_target="gnatlib-shared"
 134 else
 135   default_gnatlib_target="gnatlib-plain"
 136 fi
 137 AC_SUBST([default_gnatlib_target])
 138
 139 # Check for _Unwind_GetIPInfo
 140 GCC_CHECK_UNWIND_GETIPINFO
 141 have_getipinfo=
 142 if test x$have_unwind_getipinfo = xyes; then
 143   have_getipinfo=-DHAVE_GETIPINFO
 144 fi
 145 AC_SUBST(have_getipinfo)
 146
 147 # Output: create a Makefile.
 148 AC_CONFIG_FILES([Makefile])
 149
 150 AC_OUTPUT