New module 'wmemchr', part 3.

diff --git a/m4/wmemchr.m4 b/m4/wmemchr.m4
index 9a52b34..b2a2052 100644 (file)
--- a/m4/wmemchr.m4
+++ b/m4/wmemchr.m4
@@ -6,5 +6,10 @@ dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_FUNC_WMEMCHR],
 [
-  AC_REPLACE_FUNCS([wmemchr])
+  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([wmemchr])
+  if test $ac_cv_func_wmemchr = no; then
+    HAVE_WMEMCHR=0
+    AC_LIBOBJ([wmemchr])
+  fi
 ])