[PATCH 43/46] scripts, lto: check C symbols for modversions

Jiri Slaby (SUSE)
2022-11-14T11:49:07Z

From: Andi Kleen <ak@linux.intel.com>

The gcc LTO nm doesn't output assembler symbols, which makes the
symversions check fail because ksymtab is defined in assembler. Instead,
check for a C symbol that is generated too.

Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Martin Liska <mliska@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
scripts/Makefile.build | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 9b522c9efcb6..dafa8aeed9c2 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -173,7 +173,7 @@ ifdef CONFIG_MODVERSIONS
# be compiled and linked to the kernel and/or modules.

gen_symversions = \
- if $(NM) $@ 2>/dev/null | grep -q __ksymtab; then \
+ if $(NM) $@ 2>/dev/null | grep -q __kstrtab; then \
$(call cmd_gensymtypes_$(1),$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
>> $(dot-target).cmd; \
fi
--
2.38.1