+CC linux-kbuild. Related to this Dirk's work [1]. On Sat, Apr 18, 2015 at 11:05 AM, Jiri Olsa <jolsa@xxxxxxxxxx> wrote: > On Sat, Apr 18, 2015 at 10:46:20AM -0400, Bobby Powers wrote: >> Some toolchains (like Hardened Gentoo) define _FORTIFY_SOURCE in the >> built-in, default args. This causes perf builds to fail with: >> >> <command-line>:0:0: error: "_FORTIFY_SOURCE" redefined [-Werror] >> <built-in>: note: this is the location of the previous definition >> cc1: all warnings being treated as errors >> >> To avoid this, undefine _FORTIFY_SOURCE before (possibly >> re-)defining it in tools/lib/api. >> >> Signed-off-by: Bobby Powers <bobbypowers@xxxxxxxxx> > > Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx> > > thanks, > jirka yours, Bobby 1 - https://lkml.org/lkml/2015/4/20/269 > >> --- >> tools/lib/api/Makefile | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/tools/lib/api/Makefile b/tools/lib/api/Makefile >> index 36c08b1..87c72d1 100644 >> --- a/tools/lib/api/Makefile >> +++ b/tools/lib/api/Makefile >> @@ -21,7 +21,7 @@ LIB_OBJS += $(OUTPUT)fd/array.o >> >> LIBFILE = libapikfs.a >> >> -CFLAGS = -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) -fPIC >> +CFLAGS = -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) -fPIC >> EXTLIBS = -lelf -lpthread -lrt -lm >> ALL_CFLAGS = $(CFLAGS) $(BASIC_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 >> ALL_LDFLAGS = $(LDFLAGS) >> -- >> 2.3.5 >> -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
