Masahiro Yamada
4451642747
kbuild: use -MMD instead of -MD to exclude system headers from dependency ...
[ Upstream commit 30a7729771731971839cc969d2a321e6ea7a144b ]
This omits system headers from the generated header dependency.
System headers are not updated unless you upgrade the compiler. Nor do
they contain CONFIG options, so fixdep does not need to parse them.
Having said that, the effect of this optimization will be quite small
because the kernel code generally does not include system headers
except <stdarg.h>. Host programs include a lot of system headers,
but there are not so many in the kernel tree.
At first, keeping system headers in .*.cmd files might be useful to
detect the compiler update, but there is no guarantee that <stdarg.h>
is included from every file. So, I implemented a more reliable way in
the previous commit.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Stable-dep-of: 02e9a22ceef0 ("kbuild: hdrcheck: fix cross build with clang")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-07-17 18:24:51 +02:00
gcc-plugins: Rename last_stmt() for GCC 14+
2024-07-27 10:38:28 +02:00
genksyms: fix memory leak when the same symbol is read from *.symref file
2025-03-13 12:43:00 +01:00
kconfig: merge_config: use an empty file as initfile
2025-06-04 14:32:30 +02:00
modpost: fix the missed iteration for the max bit in do_input()
2025-01-09 13:23:36 +01:00
selinux: Chain up tool resolving errors in install_policy.sh
2025-04-10 14:29:39 +02:00
scripts/bpf: Fix xdp_md forward declaration typo
2024-03-01 13:13:38 +01:00
kbuild: fix argument parsing in scripts/config
2025-06-04 14:32:31 +02:00
kbuild: Fix '-S -c' in x86 stack protector scripts
2024-08-19 05:33:53 +02:00
kbuild: Fix '-S -c' in x86 stack protector scripts
2024-08-19 05:33:53 +02:00
kbuild: use -MMD instead of -MD to exclude system headers from dependency
2025-07-17 18:24:51 +02:00
kbuild: Fix changing ELF file type for output of gen_btf for big endian
2024-02-23 08:25:10 +01:00
kbuild: Move -Wenum-enum-conversion to W=2
2025-03-13 12:43:09 +01:00
kbuild: use -MMD instead of -MD to exclude system headers from dependency
2025-07-17 18:24:51 +02:00
kbuild: use -MMD instead of -MD to exclude system headers from dependency
2025-07-17 18:24:51 +02:00
kbuild: Use uname for LINUX_COMPILE_HOST detection
2024-12-14 19:44:19 +01:00
sign-file: Fix incorrect return values check
2023-12-20 15:41:17 +01:00
