On 6/27/22 11:45 AM, Masahiro Yamada wrote:

On Tue, Jun 28, 2022 at 1:54 AM Shuah Khan skhan@linuxfoundation.org wrote:

...

On 6/27/22 1:02 AM, Muhammad Usama Anjum wrote:

...

Build of kselftests fail if kernel's top most Makefile is used for running or building kselftests with separate output directory which is sub-directory. srctree is set to .. erroneously.

make kselftest-all O=/linux_mainline/build Makefile:1080: ../scripts/Makefile.extrawarn: No such file or directory

make kselftest-all O=build Makefile:1080: ../scripts/Makefile.extrawarn: No such file or directory

Fix this by comparing abs_srctree with CURDIR instead of abs_objtree. CURDIR changes based on from where the command has been run and it sets the srctree correctly.

Fixes: 25b146c5b8cee("kbuild: allow Kbuild to start from any directory") Signed-off-by: Muhammad Usama Anjum usama.anjum@collabora.com

---

Changes in V2:

• Correct the bugfix instead of workaround

V1: https://lore.kernel.org/lkml/20220223191016.1658728-1-usama.anjum@collabora....

Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile index e66358b64ede..4090d7afcda4 100644 --- a/Makefile +++ b/Makefile @@ -238,12 +238,12 @@ ifeq ($(need-sub-make),) # so that IDEs/editors are able to understand relative filenames. MAKEFLAGS += --no-print-directory

-ifeq ($(abs_srctree),$(abs_objtree)) +ifeq ($(abs_srctree),$(CURDIR)) # building in the source tree srctree := . building_out_of_srctree := else

•    ifeq ($(abs_srctree)/,$(dir $(abs_objtree)))
  

•    ifeq ($(abs_srctree)/,$(dir $(CURDIR)))
               # building in a subdirectory of the source tree
               srctree := ..
       else
  
  

Please resend cc'ing linux-kselftest

thanks, -- Shuah

Please do not send this any more. This part is good as is.

+ linux-kselftest@vger.kernel.org

The reason I suggested resending cc'ing linux-kselftest is because this fixes a kselftest problem.

I am assuming this patch will go through kbuild

Acked-by: Shuah Khan skhan@linuxfoundation.org

thanks, -- Shuah