Fix a bug in case statement.

diff --git a/acinclude.m4 b/acinclude.m4
index 989b99c43496f018ca047283a37faeaeeb8e8556..9ca0bff1ef113c97415a281b0d20661ed32f4dcf 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -102,7 +102,7 @@ AC_DEFUN(PHP_ADD_SOURCES_X,[
 dnl relative to source- or build-directory?
 dnl ac_srcdir/ac_bdir include trailing slash
   case $1 in
-  "") ac_srcdir="$abs_srcdir/"; unset ac_bdir; ac_inc="-I. -I$abs_srcdir" ;;
+  ""[)] ac_srcdir="$abs_srcdir/"; unset ac_bdir; ac_inc="-I. -I$abs_srcdir" ;;
   /*[)] ac_srcdir=`echo $ac_n "$1$ac_c"|cut -c 2-`"/"; ac_bdir=$ac_srcdir; ac_inc="-I$ac_bdir -I$abs_srcdir/$ac_bdir" ;;
   *[)] ac_srcdir="$abs_srcdir/$1/"; ac_bdir="$1/"; ac_inc="-I$ac_bdir -I$ac_srcdir" ;;
   esac