kernel/linux.git/scripts/subarch.include, branch v6.19.11

scripts: subarch.include: fix SUBARCH on macOS hosts

2024-09-10T04:56:37+00:00

When building the Linux kernel on an aarch64 macOS based host, if we don't specify a value for ARCH when invoking make, we default to arm and thus multi_v7_defconfig rather than the expected arm64 and arm64's defconfig. This is because subarch.include invokes `uname -m` which on MacOS hosts evaluates to `arm64` but on Linux hosts evaluates to `aarch64`, This allows us to build ARCH=arm64 natively on macOS (as in ARCH need not be specified on an aarch64-based system). Avoid matching arm64 by excluding it from the arm.* sed expression. Signed-off-by: Nick Desaulniers Suggested-by: Nicolas Schier Signed-off-by: Daniel Gomez Signed-off-by: Masahiro Yamada

LoongArch: Add build infrastructure

2022-06-03T12:09:27+00:00

Add Kbuild, Makefile, Kconfig and link script for LoongArch build infrastructure. Reviewed-by: Guo Ren Reviewed-by: WANG Xuerui Reviewed-by: Jiaxun Yang Signed-off-by: Huacai Chen

parisc: Fix compile failure when building 64-bit kernel natively

2021-09-01T19:52:02+00:00

Commit 23243c1ace9f ("arch: use cross_compiling to check whether it is a cross build or not") broke 64-bit parisc builds on 32-bit parisc systems. Helge mentioned: - 64-bit parisc userspace is not supported yet [1] - hppa gcc does not support "-m64" flag [2] That means, parisc developers working on a 32-bit parisc machine need to use hppa64-linux-gnu-gcc (cross compiler) for building the 64-bit parisc kernel. After the offending commit, gcc is used in such a case because both $(SRCARCH) and $(SUBARCH) are 'parisc', hence cross_compiling is unset. A correct way is to introduce ARCH=parisc64 because building the 64-bit parisc kernel on a 32-bit parisc system is not exactly a native build, but rather a semi-cross build. [1]: https://lore.kernel.org/linux-parisc/5dfd81eb-c8ca-b7f5-e80e-8632767c022d@gmx.de/#t [2]: https://lore.kernel.org/linux-parisc/89515325-fc21-31da-d238-6f7a9abbf9a0@gmx.de/ Fixes: 23243c1ace9f ("arch: use cross_compiling to check whether it is a cross build or not") Signed-off-by: Masahiro Yamada Reported-by: Meelis Roos Tested-by: Meelis Roos Cc: # v5.13+ Signed-off-by: Helge Deller

selftests: add headers_install to lib.mk

2018-09-05T14:12:09+00:00

If the kernel headers aren't installed we can't build all the tests. Add a new make target rule 'khdr' in the file lib.mk to generate the kernel headers and that gets include for every test-dir Makefile that includes lib.mk If the testdir in turn have its own sub-dirs the top_srcdir needs to be set to the linux-rootdir to be able to generate the kernel headers. Signed-off-by: Anders Roxell Reviewed-by: Fathi Boudra Signed-off-by: Shuah Khan (Samsung OSG)