1 files changed, 59 insertions, 0 deletions
diff --git a/aclocal/multilib.m4 b/aclocal/multilib.m4
new file mode 100644
index 0000000000..2c975c8fbd
--- /dev/null
+++ b/aclocal/multilib.m4
@@ -0,0 +1,59 @@
+dnl This provides configure definitions used for multilib support
+
+dnl parts of these macros are derived from newlib-1.8.2's multilib support
+
+AC_DEFUN(RTEMS_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 ${enableval} for multilib option) ;;
+ esac], [multilib=yes])dnl
+
+AM_CONDITIONAL(MULTILIB,test x"${multilib}" = x"yes")
+])
+
+AC_DEFUN(RTEMS_ENABLE_MULTILIB_MASTER,
+[
+AC_REQUIRE([RTEMS_ENABLE_MULTILIB])
+
+dnl We may get other options which we don't document:
+dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
+
+test -z "[$]{with_target_subdir}" && with_target_subdir=.
+
+if test "[$]{srcdir}" = "."; then
+  if test "[$]{with_target_subdir}" != "."; then
+    multilib_basedir="[$]{srcdir}/[$]{with_multisrctop}../ifelse([$2],,,[$2])"
+  else
+    multilib_basedir="[$]{srcdir}/[$]{with_multisrctop}ifelse([$2],,,[$2])"
+  fi
+else
+  multilib_basedir="[$]{srcdir}/ifelse([$2],,,[$2])"
+fi
+AC_SUBST(multilib_basedir)
+
+if test "${multilib}" = "yes"; then
+  multilib_arg="--enable-multilib"
+else
+  multilib_arg=
+fi
+
+AC_OUTPUT_COMMANDS(
+  if test -n "$CONFIG_FILES"; do
+    $ac_file" = ifelse([$1],,Makefile,[$1]) \
+    . ${multilib_basedir}/../config-ml.in
+  fi,
+  srcdir=${srcdir}
+  host=${host}
+  target=${target}
+#  with_multisrctop="${with_multisrctop}"
+#  with_target_subdir="${with_target_subdir}"
+  with_multisubdir="${with_multisubdir}"
+  ac_configure_args="${multilib_arg} ${ac_configure_args}"
+  CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+  multilib_basedir=${multilib_basedir}
+  CC="${CC}")
+])