linux-kernel - [PATCH 12/12] selftests/nolibc: run-tests.sh: allow building through LLVM

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Message-Id: <20240728-nolibc-llvm-v1-12-bc384269bc35@weissschuh.net>
Date: Sun, 28 Jul 2024 12:10:06 +0200
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Willy Tarreau <w@....eu>, Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 12/12] selftests/nolibc: run-tests.sh: allow building
 through LLVM

The nolibc tests can now be properly built with LLVM.
Expose this through run-tests.sh.
Not all architectures are compatible, add a list for those.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 tools/testing/selftests/nolibc/run-tests.sh | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/nolibc/run-tests.sh b/tools/testing/selftests/nolibc/run-tests.sh
index 324509b99e2c..64e598ea1930 100755
--- a/tools/testing/selftests/nolibc/run-tests.sh
+++ b/tools/testing/selftests/nolibc/run-tests.sh
@@ -16,9 +16,10 @@ build_location="$(realpath "${cache_dir}"/nolibc-tests/)"
 perform_download=0
 test_mode=system
 werror=1
+llvm=
 archs="i386 x86_64 arm64 arm mips32le mips32be ppc ppc64 ppc64le riscv s390 loongarch"
 
-TEMP=$(getopt -o 'j:d:c:b:a:m:peh' -n "$0" -- "$@")
+TEMP=$(getopt -o 'j:d:c:b:a:m:pelh' -n "$0" -- "$@")
 
 eval set -- "$TEMP"
 unset TEMP
@@ -42,6 +43,7 @@ Options:
  -b [DIR]       Build location (default: ${build_location})
  -m [MODE]      Test mode user/system (default: ${test_mode})
  -e             Disable -Werror
+ -l             Build with LLVM/clang
 EOF
 }
 
@@ -71,6 +73,9 @@ while true; do
 		'-e')
 			werror=0
 			shift; continue ;;
+		'-l')
+			llvm=1
+			shift; continue ;;
 		'-h')
 			print_usage
 			exit 0
@@ -84,6 +89,10 @@ done
 
 if [[ -n "$*" ]]; then
 	archs="$*"
+elif [[ "${llvm}" -eq 1 ]]; then
+	for broken in mips32le mips32be ppc64le s390; do
+		archs="${archs//$broken }"
+	done
 fi
 
 crosstool_arch() {
@@ -143,7 +152,7 @@ test_arch() {
 	if [ "$werror" -ne 0 ]; then
 		CFLAGS_EXTRA="$CFLAGS_EXTRA -Werror"
 	fi
-	MAKE=(make -j"${nproc}" XARCH="${arch}" CROSS_COMPILE="${cross_compile}" O="${build_dir}")
+	MAKE=(make -j"${nproc}" XARCH="${arch}" CROSS_COMPILE="${cross_compile}" LLVM="${llvm}" O="${build_dir}")
 
 	mkdir -p "$build_dir"
 	if [ "$test_mode" = "system" ] && [ ! -f "${build_dir}/.config" ]; then

-- 
2.45.2