lib/replace: Add test for what flag we need for -Werror behaviour

diff --git a/lib/replace/wscript b/lib/replace/wscript
index f1f1cefe6533d6b1ebd9329ccc0b69a988bedb8c..732c664b6ef8907511eef7a568a794ba0d10f926 100644 (file)
--- a/lib/replace/wscript
+++ b/lib/replace/wscript
@@ -53,6 +53,15 @@ struct foo bar = { .y = 'X', .x = 1 };
                 conf.ADD_CFLAGS(f)
             break
 
+    # Try to find the right extra flags for -Werror behaviour
+    for f in ["-Werror", "-w2", "-errwarn"]:
+        if conf.CHECK_CFLAGS([f], '''
+'''):
+            if not 'WERROR_CFLAGS' in conf.env:
+                conf.env['WERROR_CFLAGS'] = []
+            conf.env['WERROR_CFLAGS'].extend([f])
+            break
+
     conf.CHECK_HEADERS('linux/types.h crypt.h locale.h acl/libacl.h compat.h')
     conf.CHECK_HEADERS('acl/libacl.h attr/xattr.h compat.h ctype.h dustat.h')
     conf.CHECK_HEADERS('fcntl.h fnmatch.h glob.h history.h krb5.h langinfo.h')