libvtv/configure.ac

   1 # -*- Autoconf -*-
   2 # Process this file with autoconf to produce a configure script.
   3
   4 AC_INIT([GNU Vtable Verification Runtime Library], 1.0,,[libvtv])
   5 #AC_INIT(package-unused, version-unused, libvtv)
   6 AC_CONFIG_SRCDIR([vtv_rts.h])
   7
   8 AM_ENABLE_MULTILIB(, ..)
   9
  10 # -------
  11 # Options
  12 # -------
  13 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
  14 AC_ARG_ENABLE(version-specific-runtime-libs,
  15 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
  16 [case "$enableval" in
  17  yes) version_specific_libs=yes ;;
  18  no)  version_specific_libs=no ;;
  19  *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
  20  esac],
  21 [version_specific_libs=no])
  22 AC_MSG_RESULT($version_specific_libs)
  23
  24 # Do not delete or change the following two lines.  For why, see
  25 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
  26 AC_CANONICAL_SYSTEM
  27 target_alias=${target_alias-$host_alias}
  28 AC_SUBST(target_alias)
  29 GCC_LIBSTDCXX_RAW_CXX_FLAGS
  30
  31 AC_USE_SYSTEM_EXTENSIONS
  32
  33 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
  34 AC_MSG_CHECKING([for --enable-vtable-verify])
  35 AC_ARG_ENABLE(vtable-verify,
  36 [  --enable-vtable-verify    Enable vtable verification feature ],
  37 [case "$enableval" in
  38  yes) enable_vtable_verify=yes ;;
  39  no)  enable_vtable_verify=no ;;
  40  *)   enable_vtable_verify=no;;
  41  esac],
  42 [enable_vtable_verify=no])
  43 AC_MSG_RESULT($enable_vtable_verify)
  44
  45 # See if supported.
  46 unset VTV_SUPPORTED
  47 AC_MSG_CHECKING([for host support for vtable verification])
  48 . ${srcdir}/configure.tgt
  49 case ${host} in
  50   *-*-solaris2*)
  51     # libvtv requires init priority support, which depends on the linker
  52     # used on Solaris.
  53     AC_CACHE_CHECK(for init priority support, libvtv_cv_init_priority, [
  54     AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,
  55       [[void ip (void) __attribute__ ((constructor (1)));]])],
  56       [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])])
  57     if test x$libvtv_cv_init_priority = xno; then
  58       VTV_SUPPORTED=no
  59     fi
  60     # FIXME: Maybe check for dl_iterate_phdr, too?  Should be covered by
  61     # configure.tgt restricting to libvtv to Solaris 11+.
  62     ;;
  63 esac
  64 AC_MSG_RESULT($VTV_SUPPORTED)
  65
  66 # Decide if it's usable.
  67 use_vtable_verify=no
  68 if test "x$VTV_SUPPORTED" = "xyes"; then
  69   if test "x$enable_vtable_verify" = "xyes"; then
  70     use_vtable_verify=yes
  71     AC_MSG_NOTICE(using vtable verification)
  72   fi
  73 fi
  74 AM_CONDITIONAL(ENABLE_VTABLE_VERIFY, test $use_vtable_verify = yes)
  75
  76 AM_INIT_AUTOMAKE(foreign no-dist)
  77 AM_MAINTAINER_MODE
  78
  79 LIBVTV_CONFIGURE
  80
  81 GCC_WITH_TOOLEXECLIBDIR
  82
  83 # Calculate toolexeclibdir
  84 # Also toolexecdir, though it's only used in toolexeclibdir
  85 case ${version_specific_libs} in
  86   yes)
  87     # Need the gcc compiler version to know where to install libraries
  88     # and header files if --enable-version-specific-runtime-libs option
  89     # is selected.
  90     toolexecdir='$(libdir)/gcc/$(target_alias)'
  91     toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
  92     ;;
  93   no)
  94     if test -n "$with_cross_host" &&
  95        test x"$with_cross_host" != x"no"; then
  96       # Install a library built with a cross compiler in tooldir, not libdir.
  97       toolexecdir='$(exec_prefix)/$(target_alias)'
  98       case ${with_toolexeclibdir} in
  99         no)
 100           toolexeclibdir='$(toolexecdir)/lib'
 101           ;;
 102         *)
 103           toolexeclibdir=${with_toolexeclibdir}
 104           ;;
 105       esac
 106     else
 107       toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
 108       toolexeclibdir='$(libdir)'
 109     fi
 110     multi_os_directory=`$CC -print-multi-os-directory`
 111     case $multi_os_directory in
 112       .) ;; # Avoid trailing /.
 113       *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
 114     esac
 115     ;;
 116 esac
 117 AC_SUBST(toolexecdir)
 118 AC_SUBST(toolexeclibdir)
 119
 120 AC_GNU_SOURCE
 121 AC_CHECK_FUNCS([__secure_getenv])
 122
 123 AC_GNU_SOURCE
 124 AC_CHECK_FUNCS([secure_getenv])
 125
 126 AC_CHECK_FUNCS([getexecname __fortify_fail])
 127
 128 # Check for programs.
 129 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
 130 m4_define([_AC_ARG_VAR_PRECIOUS],[])
 131 AC_PROG_CC
 132 AC_PROG_CXX
 133 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
 134
 135 AM_PROG_CC_C_O
 136
 137 AC_SUBST(CFLAGS)
 138 AC_SUBST(CXXFLAGS)
 139
 140 # Newer automakes demand CCAS and CCASFLAGS.
 141 : ${CCAS='$(CC)'}
 142 : ${CCASFLAGS='$(CFLAGS)'}
 143 AC_SUBST(CCAS)
 144 AC_SUBST(CCASFLAGS)
 145
 146 AC_CHECK_TOOL(AS, as)
 147 AC_CHECK_TOOL(AR, ar)
 148 AC_CHECK_TOOL(RANLIB, ranlib, :)
 149
 150 # Configure libtool
 151 AC_LIBTOOL_DLOPEN
 152 AM_PROG_LIBTOOL
 153 ACX_LT_HOST_FLAGS
 154 AC_SUBST(enable_shared)
 155 AC_SUBST(enable_static)
 156
 157 # For libtool versioning info, format is CURRENT:REVISION:AGE
 158 libtool_VERSION=1:0:0
 159 AC_SUBST(libtool_VERSION)
 160
 161 XCFLAGS="-D_GNU_SOURCE -Wall -Wextra -fno-exceptions"
 162
 163 # Add CET specific flags if Intel CET is enabled.
 164 GCC_CET_FLAGS(CET_FLAGS)
 165 XCFLAGS="$XCFLAGS $CET_FLAGS"
 166
 167 AC_SUBST(XCFLAGS)
 168
 169 if test "${multilib}" = "yes"; then
 170   multilib_arg="--enable-multilib"
 171 else
 172   multilib_arg=
 173 fi
 174
 175 AC_CONFIG_FILES([Makefile])
 176
 177 if test "x$VTV_SUPPORTED" = "xyes"; then
 178   AC_CONFIG_FILES(AC_FOREACH([DIR], [testsuite], [DIR/Makefile ]),
 179     [cat > vpsed$$ << \_EOF
 180 s!`test -f '$<' || echo '$(srcdir)/'`!!
 181 _EOF
 182     sed -f vpsed$$ $ac_file > tmp$$
 183     mv tmp$$ $ac_file
 184     rm vpsed$$
 185     echo 'MULTISUBDIR =' >> $ac_file
 186     ml_norecursion=yes
 187     . ${multi_basedir}/config-ml.in
 188     AS_UNSET([ml_norecursion])
 189 ])
 190 fi
 191
 192 case "$target_os" in
 193   cygwin*|mingw32*)
 194     vtv_cygmin="yes"
 195     ;;
 196   *)
 197     vtv_cygmin="no"
 198     ;;
 199 esac
 200
 201 AM_CONDITIONAL(VTV_CYGMIN, test $vtv_cygmin = yes)
 202
 203 AC_CHECK_FUNCS([_obstack_begin])
 204 AM_CONDITIONAL(VTV_NO_OBSTACK, test $ac_cv_func__obstack_begin = no)
 205
 206 # Determine what GCC version number to use in filesystem paths.
 207 GCC_BASE_VER
 208
 209 AC_OUTPUT