On Wed, Aug 31, 2022 at 06:17:26AM +0200, Nicolas Schier wrote: > From: Jing Leng <jleng@xxxxxxxxxxxxx> > > commit 23a0cb8e3225122496bfa79172005c587c2d64bf upstream. > > When building an external module, if users don't need to separate the > compilation output and source code, they run the following command: > "make -C $(LINUX_SRC_DIR) M=$(PWD)". At this point, "$(KBUILD_EXTMOD)" > and "$(src)" are the same. > > If they need to separate them, they run "make -C $(KERNEL_SRC_DIR) > O=$(KERNEL_OUT_DIR) M=$(OUT_DIR) src=$(PWD)". Before running the > command, they need to copy "Kbuild" or "Makefile" to "$(OUT_DIR)" to > prevent compilation failure. > > So the kernel should change the included path to avoid the copy operation. > > Signed-off-by: Jing Leng <jleng@xxxxxxxxxxxxx> > [masahiro: I do not think "M=$(OUT_DIR) src=$(PWD)" is the official way, > but this patch is a nice clean up anyway.] > Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx> > [nsc: updated context for v4.19] > Signed-off-by: Nicolas Schier <n.schier@xxxxxx> > --- > scripts/Makefile.modpost | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > This worked for 5.4.y as well, so I took it there too. thanks, greg k-h
