diff options
authorNathan Chancellor <>2021-04-22 13:19:14 -0700
committerMasahiro Yamada <>2021-04-25 06:14:56 +0900
commitf634ca650f724347892068489c7920631a3aac6a (patch)
parent82526ef43399a7556b860538041802042b3872c1 (diff)
kbuild: Add $(KBUILD_HOSTLDFLAGS) to 'has_libelf' test
Normally, invocations of $(HOSTCC) include $(KBUILD_HOSTLDFLAGS), which in turn includes $(HOSTLDFLAGS), which allows users to pass in their own flags when linking. However, the 'has_libelf' test does not, meaning that if a user requests a specific linker via HOSTLDFLAGS=-fuse-ld=..., it is not respected and the build might error. For example, if a user building with clang wants to use all of the LLVM tools without any GNU tools, they might remove all of the GNU tools from their system or PATH then build with $ make HOSTLDFLAGS=-fuse-ld=lld LLVM=1 LLVM_IAS=1 which says use all of the LLVM tools, the integrated assembler, and ld.lld for linking host executables. Without this change, the build will error because $(HOSTCC) uses its default linker, rather than the one requested via -fuse-ld=..., which is GNU ld in clang's case in a default configuration. error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel make[1]: *** [Makefile:1260: prepare-objtool] Error 1 Add $(KBUILD_HOSTLDFLAGS) to the 'has_libelf' test so that the linker choice is respected. Link: Signed-off-by: Nathan Chancellor <> Signed-off-by: Masahiro Yamada <>
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index b14483742a67..a0319d0a6a86 100644
--- a/Makefile
+++ b/Makefile
@@ -1066,7 +1066,7 @@ export MODLIB
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)
+ echo "int main() {}" | $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0)
ifeq ($(has_libelf),1)