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Subject[PATCH AUTOSEL 5.2 123/249] tools build: Fix the zstd test in the test-all.c common case feature test
From: Arnaldo Carvalho de Melo <>

[ Upstream commit 3469fa84c1631face938efc42b3f488a2c2504e0 ]

We were renanimg 'main' to 'main_zstd' but then using 'main_libzstd();'
in the main() for test-all.c, causing this:

$ cat /tmp/build/perf/feature/test-all.make.output
test-all.c: In function ‘main’:
test-all.c:236:2: error: implicit declaration of function ‘main_test_libzstd’; did you mean ‘main_test_zstd’? [-Werror=implicit-function-declaration]
cc1: all warnings being treated as errors

I.e. what was supposed to be the fast path feature test was _always_
failing, duh, fix it.

Cc: Adrian Hunter <>
Cc: Jiri Olsa <>
Cc: Namhyung Kim <>
Cc: Alexey Budankov <>
Fixes: 3b1c5d965971 ("tools build: Implement libzstd feature check, LIBZSTD_DIR and NO_LIBZSTD defines")
Signed-off-by: Arnaldo Carvalho de Melo <>
Signed-off-by: Sasha Levin <>
tools/build/feature/test-all.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
index a59c53705093..939ac2fcc783 100644
--- a/tools/build/feature/test-all.c
+++ b/tools/build/feature/test-all.c
@@ -182,7 +182,7 @@
# include "test-disassembler-four-args.c"
#undef main

-#define main main_test_zstd
+#define main main_test_libzstd
# include "test-libzstd.c"
#undef main

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