From: Ammar Faizi <ammarfaizi2@gnuweeb.org>

Turn on more compiler warnings to help spot issues. Skip unused
function warning as it's inevitable in the nolibc test suite.

While adding these flags, remove unused variables in run_stdlib()
warned by the `-Wall` flag.

Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
---
 tools/testing/selftests/nolibc/Makefile      | 2 +-
 tools/testing/selftests/nolibc/nolibc-test.c | 2 --
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
index 572fe72df68d..f6602a2c2bbd 100644
--- a/tools/testing/selftests/nolibc/Makefile
+++ b/tools/testing/selftests/nolibc/Makefile
@@ -66,7 +66,7 @@ else
 Q=@
 endif
 
-CFLAGS  ?= -Os -fno-ident -fno-asynchronous-unwind-tables
+CFLAGS  ?= -Os -fno-ident -fno-asynchronous-unwind-tables -Wall -Wno-unused-function
 LDFLAGS := -s
 
 help:
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index f14f5076fb6d..8d69f8a0f35a 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -542,9 +542,7 @@ int run_syscall(int min, int max)
 int run_stdlib(int min, int max)
 {
 	int test;
-	int tmp;
 	int ret = 0;
-	void *p1, *p2;
 
 	for (test = min; test >= 0 && test <= max; test++) {
 		int llen = 0; // line length
-- 
Ammar Faizi