diff options
author | Michal Marek <mmarek@suse.cz> | 2011-05-02 12:51:15 +0200 |
---|---|---|
committer | Willy Tarreau <w@1wt.eu> | 2012-02-11 15:40:52 +0100 |
commit | 1e1df1cdad42883dc7877b9524367531400ce0cb (patch) | |
tree | 3bffb20861d0c21176adb3f6c7c1c908d6bfad93 /Makefile | |
parent | da0acbfbf94229fb2e3cb569d62671d3273939ae (diff) |
kbuild: Fix passing -Wno-* options to gcc 4.4+
commit 8417da6f2128008c431c7d130af6cd3d9079922e upstream.
Starting with 4.4, gcc will happily accept -Wno-<anything> in the
cc-option test and complain later when compiling a file that has some
other warning. This rather unexpected behavior is intentional as per
http://gcc.gnu.org/PR28322, so work around it by testing for support of
the opposite option (without the no-). Introduce a new Makefile function
cc-disable-warning that does this and update two uses of cc-option in
the toplevel Makefile.
Reported-and-tested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'Makefile')
-rw-r--r-- | Makefile | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -531,7 +531,7 @@ endif KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) # This warning generated too much noise in a regular build. -KBUILD_CFLAGS += $(call cc-option, -Wno-unused-but-set-variable) +KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) ifdef CONFIG_FRAME_POINTER KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls @@ -561,7 +561,7 @@ CHECKFLAGS += $(NOSTDINC_FLAGS) KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) # disable pointer signed / unsigned warnings in gcc 4.0 -KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) +KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) # disable invalid "can't wrap" optimzations for signed / pointers KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |