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-rw-r--r--configure.in18
1 files changed, 18 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index 745e769..4a81fb0 100644
--- a/configure.in
+++ b/configure.in
@@ -6,6 +6,9 @@ AC_CONFIG_SRCDIR([include/features.h])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_AUX_DIR([scripts])
+dnl This is here so we can set $subdirs directly based on configure fragments.
+AC_CONFIG_SUBDIRS()
+
AC_CANONICAL_HOST
AC_PROG_CC
@@ -458,6 +461,7 @@ if test x"$add_ons" != x; then
libc_add_on_frag=$libc_add_on_srcdir/configure
libc_add_on_canonical=
+ libc_add_on_config_subdirs=
if test -r "$libc_add_on_frag"; then
AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on)
libc_add_on_canonical=unknown
@@ -489,6 +493,20 @@ if test x"$add_ons" != x; then
test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars
$d-srcdir = $subdir_srcdir"
done
+ for d in $libc_add_on_config_subdirs; do
+ case "$d" in
+ /*) AC_MSG_ERROR(dnl
+fragment uses absolute path in \$libc_add_on_config_subdirs) ;;
+ esac
+ if test ! -d "$libc_add_on_srcdir/$d"; then
+ AC_MSG_ERROR(fragment wants to configure missing directory $d)
+ fi
+ case "$libc_add_on" in
+ /*) AC_MSG_ERROR(dnl
+relative path required for add-on using \$libc_add_on_config_subdirs) ;;
+ esac
+ subdirs="$subdirs $libc_add_on/$d"
+ done
}
fi
if test -n "$libc_add_on"; then