source: trunk/src/gcc/libjava/acinclude.m4@ 608

AC_DEFUN([AC_COMPILE_CHECK_SIZEOF],
[changequote(<<, >>)dnl
dnl The name to #define.
define(<<AC_TYPE_NAME>>, translit(sizeof_$1, [a-z *], [A-Z_P]))dnl
dnl The cache variable name.
define(<<AC_CV_NAME>>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl
changequote([, ])dnl
AC_MSG_CHECKING(size of $1)
AC_CACHE_VAL(AC_CV_NAME,
[for ac_size in 4 8 1 2 16 12 $2 ; do # List sizes in rough order of prevalence.
  AC_TRY_COMPILE([#include "confdefs.h"
#include <sys/types.h>
$2
], [switch (0) case 0: case (sizeof ($1) == $ac_size):;], AC_CV_NAME=$ac_size)
  if test x$AC_CV_NAME != x ; then break; fi
done
])
if test x$AC_CV_NAME = x ; then
  AC_MSG_ERROR([cannot determine a size for $1])
fi
AC_MSG_RESULT($AC_CV_NAME)
AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [The number of bytes in type $1])
undefine([AC_TYPE_NAME])dnl
undefine([AC_CV_NAME])dnl
])

AC_DEFUN(LIBGCJ_CONFIGURE,
[
dnl Default to --enable-multilib
AC_ARG_ENABLE(multilib,
[  --enable-multilib       build many library versions (default)],
[case "${enableval}" in
  yes) multilib=yes ;;
  no)  multilib=no ;;
  *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
 esac], [multilib=yes])dnl

dnl We may get other options which we don't document:
dnl --with-target-subdir, --with-multisrctop, --with-multisubdir

# When building with srcdir == objdir, links to the source files will
# be created in directories within the target_subdir.  We have to
# adjust toplevel_srcdir accordingly, so that configure finds
# install-sh and other auxiliary files that live in the top-level
# source directory.
if test "${srcdir}" = "."; then
  if test -z "${with_target_subdir}"; then
    toprel=".."
  else
    if test "${with_target_subdir}" != "."; then
      toprel="${with_multisrctop}../.."
    else
      toprel="${with_multisrctop}.."
    fi