| author | Nathan Chancellor <natechancellor@gmail.com> | 2019-04-09 17:46:35 (GMT) |
|---|---|---|
| committer | Nathan Chancellor <natechancellor@gmail.com> | 2019-04-09 18:31:53 (GMT) |
| commit | fc67a895f0a58fc7c6dc82bf192382b98cd1e763 (patch) | |
| tree | 806203fce6b309435207069faaec932f22fa8ac0 | |
| parent | 286f971000f15e3a619bb6f4730c38390af00cea (diff) | |
| download | common-fc67a895f0a58fc7c6dc82bf192382b98cd1e763.zip common-fc67a895f0a58fc7c6dc82bf192382b98cd1e763.tar.gz common-fc67a895f0a58fc7c6dc82bf192382b98cd1e763.tar.bz2 | |
ANDROID: Makefile: Add '-fsplit-lto-unit' to cfi-clang-flags
After r350949 in clang, linking an CONFIG_CFI_CLANG kernel fails with
the following error:
aarch64-linux-gnu-ld.gold: fatal error: LLVM gold plugin: linking
module flags 'EnableSplitLTOUnit': IDs have conflicting values
-fsplit-lto-unit is needed when using -fsanitize-cfi so add the flag if
it is supported by the compiler. CONFIG_CFI_CLANG works as expected with
a tip of tree LLVM toolchain after this commit.
Change-Id: I358ff024204c7abcef57b43a583ae960b89113f7
Link: https://github.com/ClangBuiltLinux/linux/issues/406
Link: https://github.com/llvm/llvm-project/commit/84cecfcb3db7c3275ae2d64c419a752d9f5311d6
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
| -rw-r--r-- | Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -694,7 +694,7 @@ export LDFINAL_vmlinux LDFLAGS_FINAL_vmlinux endif ifdef CONFIG_CFI_CLANG -cfi-clang-flags += -fsanitize=cfi +cfi-clang-flags += -fsanitize=cfi $(call cc-option, -fsplit-lto-unit) DISABLE_CFI_CLANG := -fno-sanitize=cfi ifdef CONFIG_MODULES cfi-clang-flags += -fsanitize-cfi-cross-dso |