From: Thomas Weißschuh <linux@weissschuh.net>
Date: Sat, 19 Jul 2025 15:38:29 +0000 (+0200)
Subject: selftests/nolibc: always compile the kernel with GCC
X-Git-Tag: v6.18-rc1~173^2~13
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=850047b19741490631855a475ccaa3ed29316039;p=thirdparty%2Flinux.git

selftests/nolibc: always compile the kernel with GCC

LLVM/clang can not build the kernel for all architectures supported by
nolibc. The current setup uses the same compiler to build the kernel as
is used for nolibc-test. This prevents using the full qemu-system tests
for LLVM builds.

Instead always build the kernel with GCC. For the nolibc testsuite the
kernel does not need to be built with LLVM.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250719-nolibc-llvm-system-v1-3-1730216ce171@weissschuh.net
---

diff --git a/tools/testing/selftests/nolibc/Makefile.nolibc b/tools/testing/selftests/nolibc/Makefile.nolibc
index ebb097d228b9e..330e000baeb1d 100644
--- a/tools/testing/selftests/nolibc/Makefile.nolibc
+++ b/tools/testing/selftests/nolibc/Makefile.nolibc
@@ -263,7 +263,7 @@ REPORT  ?= awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$/{if (!f) printf("\n"); f++
 		printf("\nSee all results in %s\n", ARGV[1]); }'
 
 # Execute the toplevel kernel Makefile
-KBUILD_MAKE = $(MAKE) -C $(srctree) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE)
+KBUILD_MAKE = $(MAKE) -C $(srctree) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) LLVM=
 
 help:
 	@echo "Supported targets under selftests/nolibc:"
@@ -276,8 +276,8 @@ help:
 	@echo "  initramfs.cpio    prepare the initramfs archive with nolibc-test"
 	@echo "  initramfs         prepare the initramfs tree with nolibc-test"
 	@echo "  defconfig         create a fresh new default config (uses \$$XARCH)"
-	@echo "  kernel            (re)build the kernel (uses \$$XARCH)"
-	@echo "  kernel-standalone (re)build the kernel with the initramfs (uses \$$XARCH)"
+	@echo "  kernel            (re)build the kernel (uses \$$XARCH, \$$CROSS_COMPILE)"
+	@echo "  kernel-standalone (re)build the kernel with the initramfs (uses \$$XARCH, \$$CROSS_COMPILE)"
 	@echo "  run               runs the kernel in QEMU after building it (uses \$$XARCH, \$$TEST)"
 	@echo "  rerun             runs a previously prebuilt kernel in QEMU (uses \$$XARCH, \$$TEST)"
 	@echo "  clean             clean the sysroot, initramfs, build and output files"