When `pkg-config --libs' wasn't used or didn't return anything useful, the test for libelf would fail even if the headers and libraries were available to kbuild via KBUILD_HOSTCFLAGS and KBUILD_HOSTLDFLAGS.
This makes the check in the core Makefile match the check that is done in tools/objtool/Makefile. Specifically, the C compiler is passed the full KBUILD_HOSTCFLAGS and KBUILD_HOSTLDFLAGS, which may have set up additional sysroot/include/library search paths to find libelf. Cc: [email protected] Cc: [email protected] Cc: Masahiro Yamada <[email protected]> Cc: Rolf Eike Beer <[email protected]> Signed-off-by: Alistair Delva <[email protected]> --- Makefile | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index 9e73f82e0d86..3269e155fbe4 100644 --- a/Makefile +++ b/Makefile @@ -1074,8 +1074,9 @@ export mod_sign_cmd HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) -has_libelf = $(call try-run,\ - echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) +has_libelf := $(call try-run,\ + echo "int main() {}" | \ + $(HOSTCC) $(KBUILD_HOSTCFLAGS) -xc -o /dev/null $(KBUILD_HOSTLDFLAGS) $(HOST_LIBELF_LIBS) -,1,0) ifdef CONFIG_STACK_VALIDATION ifeq ($(has_libelf),1) -- 2.29.2
