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

From: Jiri Slaby (SUSE)
Date: Mon Nov 14 2022 - 06:49:07 EST

From: Andi Kleen <ak@xxxxxxxxxxxxxxx>

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@xxxxxxxxxx>
Cc: Michal Marek <michal.lkml@xxxxxxxxxxx>
Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Cc: linux-kbuild@xxxxxxxxxxxxxxx
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Signed-off-by: Martin Liska <mliska@xxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
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