diff options
Diffstat (limited to 'autoconf/ast_ext_lib.m4')
-rw-r--r-- | autoconf/ast_ext_lib.m4 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/autoconf/ast_ext_lib.m4 b/autoconf/ast_ext_lib.m4 index a9f1d6cda..16b2931a6 100644 --- a/autoconf/ast_ext_lib.m4 +++ b/autoconf/ast_ext_lib.m4 @@ -54,7 +54,7 @@ AC_ARG_WITH([$1], AC_HELP_STRING([--with-$1=PATH], [use $3 in PATH]), ;; esac ], - [m4_ifval($4, [$2="$4"])]) + [m4_ifval($4, [$2="$4"], [:])]) AC_SUBST($2) ]) |