kbuild: Correctly deal with make options which contain an "s"

When using remake, which is based on gnumake, if you invoke
an example build as shown below, the build will become silent
due to the top level make file incorrectly guessing that
the end user wants a silent build because an argument that
contained an "s" was used.  Here are two examples one with remake
and one with straight gnumake.

remake --no-extended-errors
make --warn-undefined-variables

Fix up the top level Makefile to use filter to parse the options
that mean silent instead of findstring catching other random
arguments containing an "s".

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
CC: Michal Marek <mmarek@suse.cz>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: linux-kbuild@vger.kernel.org
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --git a/Makefile b/Makefile
index 2e78b080033488c4d19b4ce453a6aeacb269d9f9..a9c1a3b7f1ee4e63fe6de5785897b999041d9695 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -312,7 +312,7 @@ endif
 # If the user is running make -s (silent mode), suppress echoing of
 # commands
 
-ifneq ($(findstring s,$(MAKEFLAGS)),)
+ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
   quiet=silent_
 endif