diff options
| 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 /arch/Kconfig | |
| parent | dc5723b02e523b2c4a68667f7e28c65018f7202f (diff) | |
| download | linux-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/Kconfig | 1 |
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. |