Searched hist:"5241 ab4cf42d3a93b933b55d3d53f43049081fa1" (Results 1 – 1 of 1) sorted by relevance
| /linux/ |
| H A D | Makefile | 5241ab4cf42d3a93b933b55d3d53f43049081fa1 Mon Jul 29 09:15:17 UTC 2019 Masahiro Yamada <yamada.masahiro@socionext.com> kbuild: initialize CLANG_FLAGS correctly in the top Makefile
CLANG_FLAGS is initialized by the following line:
CLANG_FLAGS := --target=$(notdir $(CROSS_COMPILE:%-=%))
..., which is run only when CROSS_COMPILE is set.
Some build targets (bindeb-pkg etc.) recurse to the top Makefile.
When you build the kernel with Clang but without CROSS_COMPILE,
the same compiler flags such as -no-integrated-as are accumulated
into CLANG_FLAGS.
If you run 'make CC=clang' and then 'make CC=clang bindeb-pkg',
Kbuild will recompile everything needlessly due to the build command
change.
Fix this by correctly initializing CLANG_FLAGS.
Fixes: 238bcbc4e07f ("kbuild: consolidate Clang compiler flags")
Cc: <stable@vger.kernel.org> # v5.0+
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
|