linux/Documentation/kbuild
Nick Desaulniers f12b034afe scripts/Makefile.clang: default to LLVM_IAS=1
LLVM_IAS=1 controls enabling clang's integrated assembler via
-integrated-as. This was an explicit opt in until we could enable
assembler support in Clang for more architecures. Now we have support
and CI coverage of LLVM_IAS=1 for all architecures except a few more
bugs affecting s390 and powerpc.

This commit flips the default from opt in via LLVM_IAS=1 to opt out via
LLVM_IAS=0.  CI systems or developers that were previously doing builds
with CC=clang or LLVM=1 without explicitly setting LLVM_IAS must now
explicitly opt out via LLVM_IAS=0, otherwise they will be implicitly
opted-in.

This finally shortens the command line invocation when cross compiling
with LLVM to simply:

$ make ARCH=arm64 LLVM=1

Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-08-10 09:13:25 +09:00
..
gcc-plugins.rst doc: gcc-plugins: update gcc-plugins.rst 2021-01-26 06:23:20 +09:00
headers_install.rst Kbuild updates for v5.3 2019-07-12 16:03:16 -07:00
index.rst Kbuild updates for v5.7 2020-03-31 16:03:39 -07:00
issues.rst docs: kbuild: fix build with pdf and fix some minor issues 2019-07-15 11:03:04 -03:00
kbuild.rst kbuild: support LLVM=1 to switch the default tools to Clang/LLVM 2020-04-09 03:18:21 +09:00
kconfig-language.rst kconfig: change "modules" from sub-option to first-level attribute 2021-04-14 15:22:49 +09:00
kconfig-macro-language.rst kconfig: doc: fix $(fileno) to $(filename) 2020-12-21 16:01:44 +09:00
Kconfig.recursion-issue-01 kbuild: document recursive dependency limitation / resolution 2015-10-08 15:36:16 +02:00
Kconfig.recursion-issue-02 docs: kbuild: Fix a typo in the file Kconfig.recursion-issue-02 2021-04-25 05:13:56 +09:00
kconfig.rst kconfig: change defconfig_list option to environment variable 2021-04-14 15:22:48 +09:00
Kconfig.select-break kbuild: document recursive dependency limitation / resolution 2015-10-08 15:36:16 +02:00
llvm.rst scripts/Makefile.clang: default to LLVM_IAS=1 2021-08-10 09:13:25 +09:00
makefiles.rst Kbuild updates for v5.12 2021-02-25 10:17:31 -08:00
modules.rst kbuild: doc: replace arch/$(ARCH)/ with arch/$(SRCARCH)/ 2020-12-21 13:56:58 +09:00
reproducible-builds.rst gcc-plugins: fix gcc-plugins directory path in documentation 2020-06-28 12:16:55 +09:00