libobjc/aclocal.m4

   1 dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
   2 dnl This file is free software; the Free Software Foundation
   3 dnl gives unlimited permission to copy and/or distribute it,
   4 dnl with or without modifications, as long as this notice is preserved.
   5
   6 dnl This program is distributed in the hope that it will be useful,
   7 dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
   8 dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
   9 dnl PARTICULAR PURPOSE.
  10
  11 dnl
  12 dnl Initialize configure bits.
  13 dnl
  14 dnl GLIBCPP_CONFIGURE
  15 AC_DEFUN(GLIBCPP_CONFIGURE, [
  16   dnl Default to --enable-multilib
  17   AC_ARG_ENABLE(multilib,
  18   [  --enable-multilib       build hella library versions (default)],
  19   [case "${enableval}" in
  20     yes) multilib=yes ;;
  21     no)  multilib=no ;;
  22     *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
  23    esac], [multilib=yes])dnl
  24
  25 # When building with srcdir == objdir, links to the source files will
  26 # be created in directories within the target_subdir.  We have to
  27 # adjust toplevel_srcdir accordingly, so that configure finds
  28 # install-sh and other auxiliary files that live in the top-level
  29 # source directory.
  30 if test "${srcdir}" = "."; then
  31   if test -z "${with_target_subdir}"; then
  32     toprel=".."
  33   else
  34     if test "${with_target_subdir}" != "."; then
  35       toprel="${with_multisrctop}../.."
  36     else
  37       toprel="${with_multisrctop}.."
  38     fi
  39   fi
  40 else
  41   toprel=".."
  42 fi
  43 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
  44 toplevel_srcdir=\${top_srcdir}/$toprel
  45 AC_SUBST(toplevel_srcdir)
  46
  47 # Export build and source directories.
  48 # These need to be absolute paths, yet at the same time need to
  49 # canonicalize only relative paths, because then amd will not unmount
  50 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
  51 glibcpp_builddir=`pwd`
  52 case $srcdir in
  53 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
  54 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
  55 esac
  56 AC_SUBST(glibcpp_builddir)
  57 AC_SUBST(glibcpp_srcdir)
  58
  59 dnl This is here just to satisfy automake.
  60 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
  61
  62 # Will set LN_S to either 'ln -s' or 'ln'.  With autoconf 2.50+, can also
  63 # be 'cp -p' if linking isn't available.
  64 #ac_cv_prog_LN_S='cp -p'
  65 AC_PROG_LN_S
  66
  67 # We use these options to decide which functions to include.
  68 AC_ARG_WITH(target-subdir,
  69 [  --with-target-subdir=SUBDIR
  70                            configuring in a subdirectory])
  71 AC_ARG_WITH(cross-host,
  72 [  --with-cross-host=HOST  configuring with a cross compiler])
  73
  74   # Never versions of autoconf add an underscore to these functions.
  75   # Prevent future problems ...
  76   ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
  77   ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
  78   ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
  79   ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
  80
  81 #  AC_PROG_CC
  82
  83 # FIXME: We temporarily define our own version of AC_PROG_CC.  This is
  84 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS.  We
  85 # are probably using a cross compiler, which will not be able to fully
  86 # link an executable.  This should really be fixed in autoconf
  87 # itself.
  88
  89 AC_DEFUN(LIB_AC_PROG_CC,
  90 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
  91 dnl Fool anybody using AC_PROG_CC.
  92 AC_PROVIDE([AC_PROG_CC])
  93 AC_CHECK_PROG(CC, gcc, gcc)
  94 if test -z "$CC"; then
  95   AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
  96   test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
  97 fi
  98
  99 AC_PROG_CC_GNU
 100
 101 if test $ac_cv_prog_gcc = yes; then
 102   GCC=yes
 103 dnl Check whether -g works, even if CFLAGS is set, in case the package
 104 dnl plays around with CFLAGS (such as to build both debugging and
 105 dnl normal versions of a library), tasteless as that idea is.
 106   ac_test_CFLAGS="${CFLAGS+set}"
 107   ac_save_CFLAGS="$CFLAGS"
 108   CFLAGS=
 109   AC_PROG_CC_G
 110   if test "$ac_test_CFLAGS" = set; then
 111     CFLAGS="$ac_save_CFLAGS"
 112   elif test $ac_cv_prog_cc_g = yes; then
 113     CFLAGS="-g -O2"
 114   else
 115     CFLAGS="-O2"
 116   fi
 117 else
 118   GCC=
 119   test "${CFLAGS+set}" = set || CFLAGS="-g"
 120 fi
 121 ])
 122
 123 LIB_AC_PROG_CC
 124
 125   AC_CHECK_TOOL(AS, as)
 126   AC_CHECK_TOOL(AR, ar)
 127   AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
 128   AC_PROG_INSTALL
 129
 130   # We need AC_EXEEXT to keep automake happy in cygnus mode.  However,
 131   # at least currently, we never actually build a program, so we never
 132   # need to use $(EXEEXT).  Moreover, the test for EXEEXT normally
 133   # fails, because we are probably configuring with a cross compiler
 134   # which can't create executables.  So we include AC_EXEEXT to keep
 135   # automake happy, but we don't execute it, since we don't care about
 136   # the result.
 137   if false; then
 138     # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
 139     # to nothing, so nothing would remain between `then' and `fi' if it
 140     # were not for the `:' below.
 141     :
 142     AC_EXEEXT
 143   fi
 144 ])
 145
 146
 147 dnl
 148 dnl  GLIBCPP_EXPORT_INSTALL_INFO
 149 dnl  calculates gxx_install_dir
 150 dnl  exports glibcpp_toolexecdir
 151 dnl  exports glibcpp_toolexeclibdir
 152 dnl  exports glibcpp_prefixdir
 153 dnl
 154 dnl Assumes cross_compiling bits already done, and with_cross_host in
 155 dnl particular
 156 dnl
 157 dnl GLIBCPP_EXPORT_INSTALL_INFO
 158 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
 159 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
 160 # exported correctly in GLIBCPP_CONFIGURE.
 161 glibcpp_toolexecdir=no
 162 glibcpp_toolexeclibdir=no
 163 glibcpp_prefixdir=${prefix}
 164
 165 AC_MSG_CHECKING([for interface version number])
 166 libstdcxx_interface=$INTERFACE
 167 AC_MSG_RESULT($libstdcxx_interface)
 168
 169 # Process the option "--enable-version-specific-runtime-libs"
 170 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
 171 AC_ARG_ENABLE(version-specific-runtime-libs,
 172 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
 173 [case "$enableval" in
 174  yes) version_specific_libs=yes ;;
 175  no)  version_specific_libs=no ;;
 176  *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
 177  esac],
 178 version_specific_libs=no)dnl
 179 # Option set, now we can test it.
 180 AC_MSG_RESULT($version_specific_libs)
 181
 182 gcc_version_trigger=${srcdir}/../gcc/version.c
 183 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/'`
 184 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
 185 AC_SUBST(gcc_version)
 186 AC_SUBST(gcc_version_trigger)
 187
 188 if test $version_specific_libs = yes; then
 189   # Need the gcc compiler version to know where to install libraries
 190   # and header files if --enable-version-specific-runtime-libs option
 191   # is selected.
 192   changequote(,)dnl
 193   glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
 194   glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
 195   changequote([,])dnl
 196 fi
 197
 198 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
 199 # Install a library built with a cross compiler in tooldir, not libdir.
 200 if test x"$glibcpp_toolexecdir" = x"no"; then
 201   if test -n "$with_cross_host" &&
 202      test x"$with_cross_host" != x"no"; then
 203     glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
 204     glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
 205   else
 206     glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
 207     glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
 208   fi
 209 fi
 210
 211 AC_SUBST(glibcpp_prefixdir)
 212 AC_SUBST(glibcpp_toolexecdir)
 213 AC_SUBST(glibcpp_toolexeclibdir)
 214 ])
 215
 216 sinclude(../libtool.m4)
 217 dnl The lines below arrange for aclocal not to bring an installed
 218 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
 219 dnl add a definition of LIBTOOL to Makefile.in.
 220 ifelse(,,,[AC_SUBST(LIBTOOL)
 221 AC_DEFUN([AM_PROG_LIBTOOL])
 222 AC_DEFUN([AC_LIBTOOL_DLOPEN])
 223 AC_DEFUN([AC_PROG_LD])
 224 ])