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| author | Masahiro Yamada <masahiroy@kernel.org> | 2024-11-10 04:34:35 +0300 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2024-11-28 02:11:55 +0300 |
| commit | 11b3d5175e6bc3779159228e6077be202d2b0069 (patch) | |
| tree | 8b85efcc9a4538c3e23c0beb7145f6a55f90f96d /scripts/Makefile.lib | |
| parent | bad6beb2c0bb982b830f592a7b3e3eee76cbb85a (diff) | |
| download | linux-11b3d5175e6bc3779159228e6077be202d2b0069.tar.xz | |
kbuild: support building external modules in a separate build directory
There has been a long-standing request to support building external
modules in a separate build directory.
This commit introduces a new environment variable, KBUILD_EXTMOD_OUTPUT,
and its shorthand Make variable, MO.
A simple usage:
$ make -C <kernel-dir> M=<module-src-dir> MO=<module-build-dir>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Diffstat (limited to 'scripts/Makefile.lib')
| -rw-r--r-- | scripts/Makefile.lib | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index e7859ad90224..5660dfc9ed36 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -213,13 +213,11 @@ endif # $(src) for including checkin headers from generated source files # $(obj) for including generated headers from checkin source files -ifeq ($(KBUILD_EXTMOD),) ifdef building_out_of_srctree _c_flags += $(addprefix -I, $(src) $(obj)) _a_flags += $(addprefix -I, $(src) $(obj)) _cpp_flags += $(addprefix -I, $(src) $(obj)) endif -endif # If $(is-kernel-object) is 'y', this object will be linked to vmlinux or modules is-kernel-object = $(or $(part-of-builtin),$(part-of-module)) |