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perf build: Add -funsigned-char to default CFLAGS 

Commit 3bc753c06d ("kbuild: treat char as always unsigned") made
chars unsigned by default in the Linux kernel. To avoid similar kinds
of bugs and warnings, make unsigned chars the default for the perf tool.

Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
master
Ian Rogers 2026-03-06 11:19:08 -08:00 committed by Namhyung Kim
parent 74e2dbe7be
commit be867c49fe
1 changed files with 1 additions and 0 deletions
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tools/perf/Makefile.config
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@ -349,6 +349,7 @@ CORE_CFLAGS += -fno-omit-frame-pointer
CORE_CFLAGS += -Wall
CORE_CFLAGS += -Wextra
CORE_CFLAGS += -std=gnu11
CORE_CFLAGS += -funsigned-char
CXXFLAGS += -std=gnu++17 -fno-exceptions -fno-rtti
CXXFLAGS += -Wall