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| author | Masahiro Yamada <masahiroy@kernel.org> | 2024-11-10 10:34:35 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2024-11-28 08:11:55 +0900 |
| commit | 11b3d5175e6bc3779159228e6077be202d2b0069 (patch) | |
| tree | 8b85efcc9a4538c3e23c0beb7145f6a55f90f96d /scripts/Makefile.host | |
| parent | bad6beb2c0bb982b830f592a7b3e3eee76cbb85a (diff) | |
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.host')
| -rw-r--r-- | scripts/Makefile.host | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/scripts/Makefile.host b/scripts/Makefile.host index e01c13a588dd..c1dedf646a39 100644 --- a/scripts/Makefile.host +++ b/scripts/Makefile.host @@ -96,12 +96,10 @@ hostrust_flags = --out-dir $(dir $@) --emit=dep-info=$(depfile) \ $(KBUILD_HOSTRUSTFLAGS) $(HOST_EXTRARUSTFLAGS) \ $(HOSTRUSTFLAGS_$(target-stem)) -# $(objtree)/$(obj) for including generated headers from checkin source files -ifeq ($(KBUILD_EXTMOD),) +# $(obj) for including generated headers from checkin source files ifdef building_out_of_srctree -hostc_flags += -I $(objtree)/$(obj) -hostcxx_flags += -I $(objtree)/$(obj) -endif +hostc_flags += -I $(obj) +hostcxx_flags += -I $(obj) endif ##### |