(gl_C_STRTOD): Add gl_USE_SYSTEM_EXTENSIONS.

diff --git a/m4/c-strtod.m4 b/m4/c-strtod.m4
index 68ae4fccc400fc917801a15141ed5b9616f13d5c..5634198f4a63d66620de7a94472b0bd327ee999b 100644 (file)
--- a/m4/c-strtod.m4
+++ b/m4/c-strtod.m4
@@ -1,4 +1,4 @@
-# c-strtod.m4 serial 1
+# c-strtod.m4 serial 2
 
 # Copyright (C) 2004 Free Software Foundation, Inc.
 
@@ -21,6 +21,7 @@
 AC_DEFUN([gl_C_STRTOD],
 [
   dnl Prerequisites of lib/c-strtod.c.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
   :
 ])