1 files changed, 53 insertions, 0 deletions
diff --git a/cpukit/aclocal/multi.m4 b/cpukit/aclocal/multi.m4
new file mode 100644
index 0000000000..08d1783dd5
--- /dev/null
+++ b/cpukit/aclocal/multi.m4
@@ -0,0 +1,53 @@
+#serial 99
+
+AC_DEFUN(AC_ENABLE_MULTILIB,
+[
+AC_ARG_ENABLE(multilib,
+AC_HELP_STRING([--enable-multilib],
+[build many library versions (default=no)]),
+[case "${enableval}" in
+  yes) multilib=yes ;;
+  no)  multilib=no ;;
+  *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
+ esac], [multilib=no])dnl
+
+AM_CONDITIONAL(MULTILIB,test x"${multilib}" = x"yes")
+
+dnl We may get other options which we don't document:
+dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
+
+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(
+[case " $CONFIG_FILES " in
+ *" ]m4_if([$1],,Makefile,[$1])[ "*)
+    ac_file=]m4_if([$1],,Makefile,[$1])[ . ${multilib_basedir}/config-ml.in
+esac],
+[
+  srcdir=${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}"]
+)
+])