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| author | Sami Tolvanen <samitolvanen@google.com> | 2020-12-11 10:46:20 -0800 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2021-01-14 08:21:08 -0800 |
| commit | 38e89184900385b0dad1ee55c35ae8abcfee6ece (patch) | |
| tree | 2fceafbc8aaa221c67b16a20908db6bda6a5305d /Makefile | |
| parent | dc5723b02e523b2c4a68667f7e28c65018f7202f (diff) | |
| download | linux-stable-38e89184900385b0dad1ee55c35ae8abcfee6ece.tar.gz linux-stable-38e89184900385b0dad1ee55c35ae8abcfee6ece.tar.bz2 linux-stable-38e89184900385b0dad1ee55c35ae8abcfee6ece.zip | |
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 'Makefile')
| -rw-r--r-- | Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -1837,7 +1837,8 @@ clean: $(clean-dirs) -o -name '.tmp_*.o.*' \ -o -name '*.c.[012]*.*' \ -o -name '*.ll' \ - -o -name '*.gcno' \) -type f -print | xargs rm -f + -o -name '*.gcno' \ + -o -name '*.*.symversions' \) -type f -print | xargs rm -f # Generate tags for editors # --------------------------------------------------------------------------- |