Messages in this thread | | | From | Masahiro Yamada <> | Subject | [PATCH 0/2] kbuild: use relative path from $(srctree) instead of __FILE__ | Date | Thu, 12 Oct 2017 18:56:02 +0900 |
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Kbuild works in objtree, not in srctree. So, __FILE__ is prefixed with $(srctree)/ for out-of-tree build.
For example, WARN_ON() will look as follows if you built your kernel out of source tree:
WARNING: CPU: 1 PID: 1 at /path/to/build/directory/arch/arm64/kernel/foo.c:...
With this series, it will always look like follows regardless of O= option.
WARNING: CPU: 1 PID: 1 at arch/arm64/kernel/foo.c:...
If GCC does not support -Wno-builtin-macro-redefined (i.e. gcc version < 4.4), the output is prefixed with absolute path.
Masahiro Yamada (2): kbuild: add stringify helper to quote a string passed to C files kbuild: redefine __FILE__ as relative path from $(srctree) if possible
Makefile | 9 +++++++++ scripts/Kbuild.include | 4 ++++ scripts/Makefile.lib | 2 +- 3 files changed, 14 insertions(+), 1 deletion(-)
-- 2.7.4
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