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.

Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20240807-nolibc-llvm-v2-15-c20f2f5fc7c2@weissschuh.net
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>

diff --git a/tools/testing/selftests/nolibc/run-tests.sh b/tools/testing/selftests/nolibc/run-tests.sh
index 324509b99e2c0bb46547fdd77773e77557cd1ff2..e7ecda4ae796fbf0d389f20144511e66ce4f0b30 100755 (executable)
--- 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
@@ -143,7 +148,7 @@ 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