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authorSami Tolvanen <samitolvanen@google.com>2020-12-11 10:46:20 -0800
committerKees Cook <keescook@chromium.org>2021-01-14 08:21:08 -0800
commit38e89184900385b0dad1ee55c35ae8abcfee6ece (patch)
tree2fceafbc8aaa221c67b16a20908db6bda6a5305d /arch/Kconfig
parentdc5723b02e523b2c4a68667f7e28c65018f7202f (diff)
downloadlinux-38e89184900385b0dad1ee55c35ae8abcfee6ece.tar.bz2
kbuild: lto: fix module versioning
With CONFIG_MODVERSIONS, version information is linked into each compilation unit that exports symbols. With LTO, we cannot use this method as all C code is compiled into LLVM bitcode instead. This change collects symbol versions into .symversions files and merges them in link-vmlinux.sh where they are all linked into vmlinux.o at the same time. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20201211184633.3213045-4-samitolvanen@google.com
Diffstat (limited to 'arch/Kconfig')
-rw-r--r--arch/Kconfig1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 9494e3931f4b..4f2f045d288e 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -668,7 +668,6 @@ config HAS_LTO_CLANG
depends on !FTRACE_MCOUNT_USE_RECORDMCOUNT
depends on !KASAN
depends on !GCOV_KERNEL
- depends on !MODVERSIONS
help
The compiler and Kconfig options support building with Clang's
LTO.