Define NDEBUG only if not yet defined.

diff --git a/stdio-common/printf_fp.c b/stdio-common/printf_fp.c
index 49292e5b7caa1e1dc1db9016c2ceeb2a6988b177..0920fb4fca0abd8c9f338b97ea7f0e44fe8f07bc 100644 (file)
--- a/stdio-common/printf_fp.c
+++ b/stdio-common/printf_fp.c
@@ -42,7 +42,9 @@
 #include <unistd.h>
 #include <stdlib.h>
 
-#define NDEBUG                 /* Undefine this for debugging assertions.  */
+#ifndef NDEBUG
+# define NDEBUG                        /* Undefine this for debugging assertions.  */
+#endif
 #include <assert.h>
 
 /* This defines make it possible to use the same code for GNU C library and