libgo/configure.ac

   1 # configure.ac -- Go library configure script.
   2
   3 # Copyright 2009 The Go Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style
   5 # license that can be found in the LICENSE file.
   6
   7 # Process this file with autoreconf to produce configure.
   8
   9 AC_PREREQ(2.64)
  10 AC_INIT(package-unused, version-unused,, libgo)
  11 AC_CONFIG_SRCDIR(Makefile.am)
  12 AC_CONFIG_HEADER(config.h)
  13
  14 libtool_VERSION=1:0:0
  15 AC_SUBST(libtool_VERSION)
  16
  17 AM_ENABLE_MULTILIB(, ..)
  18
  19 AC_CANONICAL_SYSTEM
  20 target_alias=${target_alias-$host_alias}
  21
  22 AM_INIT_AUTOMAKE([1.9.3 no-define foreign -Wall])
  23 AH_TEMPLATE(PACKAGE, [Name of package])
  24 AH_TEMPLATE(VERSION, [Version number of package])
  25
  26 m4_rename([_AC_ARG_VAR_PRECIOUS],[glibgo_PRECIOUS])
  27 m4_define([_AC_ARG_VAR_PRECIOUS],[])
  28 AC_PROG_CC
  29 AC_PROG_GO
  30 m4_rename_force([glibgo_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
  31
  32 AC_SUBST(CFLAGS)
  33
  34 AM_MAINTAINER_MODE
  35
  36 AC_PROG_LD
  37 AC_PROG_RANLIB
  38 AC_CHECK_TOOL(OBJCOPY, objcopy, missing-objcopy)
  39
  40 AC_LIBTOOL_DLOPEN
  41 AM_PROG_LIBTOOL
  42 AC_SUBST(enable_shared)
  43 AC_SUBST(enable_static)
  44
  45 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
  46 AC_SUBST(WARN_FLAGS)
  47
  48 dnl FIXME: This should be controlled by --enable-maintainer-mode.
  49 WERROR="-Werror"
  50 AC_SUBST(WERROR)
  51
  52 glibgo_toolexecdir=no
  53 glibgo_toolexeclibdir=no
  54 glibgo_prefixdir=$prefix
  55
  56 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
  57 AC_ARG_ENABLE([version-specific-runtime-libs],
  58   AC_HELP_STRING([--enable-version-specific-runtime-libs],
  59                  [Specify that runtime libraries should be installed in a compiler-specific directory]),
  60   [case "$enableval" in
  61     yes) version_specific_libs=yes ;;
  62     no)  version_specific_libs=no ;;
  63     *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
  64    esac],
  65   [version_specific_libs=no])
  66 AC_MSG_RESULT($version_specific_libs)
  67
  68 # Version-specific runtime libs processing.
  69 if test $version_specific_libs = yes; then
  70   glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
  71   glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
  72 fi
  73
  74 # Calculate glibgo_toolexecdir, glibgo_toolexeclibdir
  75 # Install a library built with a cross compiler in tooldir, not libdir.
  76 if test x"$glibgo_toolexecdir" = x"no"; then
  77   if test -n "$with_cross_host" &&
  78      test x"$with_cross_host" != x"no"; then
  79     glibgo_toolexecdir='${exec_prefix}/${host_alias}'
  80     glibgo_toolexeclibdir='${toolexecdir}/lib'
  81   else
  82     glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
  83     glibgo_toolexeclibdir='${libdir}'
  84   fi
  85   multi_os_directory=`$CC -print-multi-os-directory`
  86   case $multi_os_directory in
  87     .) ;; # Avoid trailing /.
  88     *) glibgo_toolexeclibdir=$glibgo_toolexeclibdir/$multi_os_directory ;;
  89   esac
  90 fi
  91
  92 AC_SUBST(glibgo_prefixdir)
  93 AC_SUBST(glibgo_toolexecdir)
  94 AC_SUBST(glibgo_toolexeclibdir)
  95
  96 # See if the user wants to configure without libffi.  Some
  97 # architectures don't support it.  FIXME: We should set a default
  98 # based on the host.
  99 AC_ARG_WITH(libffi,
 100   AS_HELP_STRING([--without-libffi],
 101                  [don't use libffi]),
 102   [:],
 103   [with_libffi=${with_libffi_default-yes}])
 104
 105 LIBFFI=
 106 LIBFFIINCS=
 107 if test "$with_libffi" != no; then
 108    AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.])
 109    LIBFFI=../libffi/libffi_convenience.la
 110    LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include'
 111 fi
 112 AC_SUBST(LIBFFI)
 113 AC_SUBST(LIBFFIINCS)
 114
 115 is_darwin=no
 116 is_freebsd=no
 117 is_linux=no
 118 is_rtems=no
 119 GOOS=unknown
 120 case ${host} in
 121   *-*-darwin*) is_darwin=yes; GOOS=darwin ;;
 122   *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;;
 123   *-*-linux*)  is_linux=yes; GOOS=linux  ;;
 124   *-*-rtems*)  is_rtems=yes; GOOS=rtems  ;;
 125 esac
 126 AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes)
 127 AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes)
 128 AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes)
 129 AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes)
 130 AC_SUBST(GOOS)
 131
 132 is_386=no
 133 is_x86_64=no
 134 is_arm=no
 135 GOARCH=unknown
 136 case ${host} in
 137 changequote(,)dnl
 138   i[34567]86-*-* | x86_64-*-*)
 139 changequote([,])dnl
 140     AC_PREPROC_IFELSE([
 141 #ifdef __x86_64__
 142 #error 64-bit
 143 #endif],
 144 [is_386=yes], [is_x86_64=yes])
 145     if test "$is_386" = "yes"; then
 146       GOARCH=386
 147     else
 148       GOARCH=amd64
 149     fi
 150     ;;
 151   arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
 152     is_arm=yes
 153     GOARCH=arm
 154     ;;
 155 esac
 156 AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes)
 157 AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
 158 AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes)
 159 AC_SUBST(GOARCH)
 160
 161 dnl Use -fsplit-stack when compiling C code if available.
 162 AC_CACHE_CHECK([whether -fsplit-stack is supported],
 163 [ac_cv_libgo_split_stack_supported],
 164 [CFLAGS_hold=$CFLAGS
 165 CFLAGS="$CFLAGS -fsplit-stack"
 166 AC_COMPILE_IFELSE([[int i;]],
 167 [ac_cv_libgo_split_stack_supported=yes],
 168 [ac_cv_libgo_split_stack_supported=no])
 169 CFLAGS=$CFLAGS_hold])
 170 if test "$ac_cv_libgo_split_stack_supported" = yes; then
 171   SPLIT_STACK=-fsplit-stack
 172   AC_DEFINE(USING_SPLIT_STACK, 1,
 173                 [Define if the compiler supports -fsplit-stack])
 174 else
 175   SPLIT_STACK=
 176 fi
 177 AC_SUBST(SPLIT_STACK)
 178 AM_CONDITIONAL(USING_SPLIT_STACK,
 179         test "$ac_cv_libgo_split_stack_supported" = yes)
 180
 181 dnl Check whether the linker does stack munging when calling from
 182 dnl split-stack into non-split-stack code.  We check this by looking
 183 dnl at the --help output.  FIXME: This is only half right: it's
 184 dnl possible for the linker to support this for some targets but not
 185 dnl others.
 186 AC_CACHE_CHECK([whether linker supports split stack],
 187 [ac_cv_libgo_linker_supports_split_stack],
 188 ac_cv_libgo_linker_supports_split_stack=no
 189 if $LD --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
 190   ac_cv_libgo_linker_supports_split_stack=yes
 191 fi)
 192 if test "$ac_cv_libgo_linker_supports_split_stack" = yes; then
 193   AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
 194             [Define if the linker support split stack adjustments])
 195 fi
 196
 197 dnl Test for the -lm library.
 198 MATH_LIBS=
 199 AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
 200 AC_SUBST(MATH_LIBS)
 201
 202 dnl Test whether the compiler supports the -pthread option.
 203 AC_CACHE_CHECK([whether -pthread is supported],
 204 [ac_cv_libgo_pthread_supported],
 205 [CFLAGS_hold=$CFLAGS
 206 CFLAGS="$CFLAGS -pthread"
 207 AC_COMPILE_IFELSE([[int i;]],
 208 [ac_cv_libgo_pthread_supported=yes],
 209 [ac_cv_libgo_pthread_supported=no])
 210 CFLAGS=$CFLAGS_hold])
 211 PTHREAD_CFLAGS=
 212 if test "$ac_cv_libgo_pthread_supported" = yes; then
 213   PTHREAD_CFLAGS=-pthread
 214 fi
 215 AC_SUBST(PTHREAD_CFLAGS)
 216
 217 dnl Test for the -lpthread library.
 218 PTHREAD_LIBS=
 219 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
 220 AC_SUBST(PTHREAD_LIBS)
 221
 222 AC_C_BIGENDIAN
 223
 224 GCC_CHECK_UNWIND_GETIPINFO
 225
 226 AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/user.h sys/utsname.h)
 227 AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
 228 AC_CHECK_FUNCS(srandom random strsignal)
 229
 230 dnl For x86 we want to use the -minline-all-stringops option to avoid
 231 dnl forcing a stack split when calling memcpy and friends.
 232 AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
 233 [ac_cv_libgo_compiler_supports_inline_all_stringops],
 234 [CFLAGS_hold=$CFLAGS
 235 CFLAGS="$CFLAGS -minline-all-stringops"
 236 AC_COMPILE_IFELSE([int i;],
 237 [ac_cv_libgo_compiler_supports_inline_all_stringops=yes],
 238 [ac_cv_libgo_compiler_supports_inline_all_stringops=no])
 239 CFLAGS=$CFLAGS_hold])
 240 STRINGOPS_FLAG=
 241 if test "$ac_cv_libgo_compiler_supports_inline_all_stringops" = yes; then
 242   STRINGOPS_FLAG=-minline-all-stringops
 243 fi
 244 AC_SUBST(STRINGOPS_FLAG)
 245
 246 CFLAGS_hold=$CFLAGS
 247 CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
 248 AC_CHECK_TYPES(off64_t)
 249 CFLAGS=$CFLAGS_hold
 250
 251 AC_CACHE_SAVE
 252
 253 if test ${multilib} = yes; then
 254   multilib_arg="--enable-multilib"
 255 else
 256   multilib_arg=
 257 fi
 258
 259 AC_CONFIG_FILES(Makefile testsuite/Makefile)
 260
 261 AC_CONFIG_COMMANDS([default],
 262 [if test -n "$CONFIG_FILES"; then
 263    # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
 264    # that multilib installs will end up installed in the correct place.
 265    # The testsuite needs it for multilib-aware ABI baseline files.
 266    # To work around this not being passed down from config-ml.in ->
 267    # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
 268    # append it here.  Only modify Makefiles that have just been created.
 269    #
 270    # Also, get rid of this simulated-VPATH thing that automake does.
 271    cat > vpsed << \_EOF
 272 s!`test -f '$<' || echo '$(srcdir)/'`!!
 273 _EOF
 274    for i in $SUBDIRS; do
 275     case $CONFIG_FILES in
 276      *${i}/Makefile*)
 277        #echo "Adding MULTISUBDIR to $i/Makefile"
 278        sed -f vpsed $i/Makefile > tmp
 279        grep '^MULTISUBDIR =' Makefile >> tmp
 280        mv tmp $i/Makefile
 281        ;;
 282     esac
 283    done
 284    rm vpsed
 285  fi
 286 ],
 287 [
 288 # Variables needed in config.status (file generation) which aren't already
 289 # passed by autoconf.
 290 SUBDIRS="$SUBDIRS"
 291 ])
 292
 293 AC_OUTPUT