Hi Anders,
On Wed, Aug 8, 2018 at 12:46 PM Anders Roxell anders.roxell@linaro.org wrote:
On Tue, 7 Aug 2018 at 04:33, Masahiro Yamada yamada.masahiro@socionext.com wrote:
2018-08-07 2:03 GMT+09:00 Shuah Khan shuah@kernel.org:
On 07/25/2018 10:08 AM, Anders Roxell wrote:
On Tue, 24 Jul 2018 at 19:11, Shuah Khan shuah@kernel.org wrote:
On 07/23/2018 02:49 PM, Anders Roxell wrote:
On Thu, 7 Jun 2018 at 13:09, Anders Roxell anders.roxell@linaro.org wrote: > > If the kernel headers aren't installed we can't build all the tests. > Add a new make target rule 'khdr' in the file lib.mk to generate the > kernel headers and that gets include for every test-dir Makefile that > includes lib.mk If the testdir in turn have its own sub-dirs the > top_srcdir needs to be set to the linux-rootdir to be able to generate > the kernel headers. > > Signed-off-by: Anders Roxell anders.roxell@linaro.org > Reviewed-by: Fathi Boudra fathi.boudra@linaro.org > --- > Makefile | 14 +------------- > scripts/subarch.include | 13 +++++++++++++ > tools/testing/selftests/android/Makefile | 2 +- > tools/testing/selftests/android/ion/Makefile | 2 ++ > tools/testing/selftests/futex/functional/Makefile | 1 + > tools/testing/selftests/gpio/Makefile | 7 ++----- > tools/testing/selftests/kvm/Makefile | 7 ++----- > tools/testing/selftests/lib.mk | 12 ++++++++++++ > tools/testing/selftests/net/Makefile | 1 + > .../selftests/networking/timestamping/Makefile | 1 + > tools/testing/selftests/vm/Makefile | 4 ---- > 11 files changed, 36 insertions(+), 28 deletions(-) > create mode 100644 scripts/subarch.include > > diff --git a/Makefile b/Makefile > index 6b9aea95ae3a..8050072300fa 100644 > --- a/Makefile > +++ b/Makefile > @@ -286,19 +286,7 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) > KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) > export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION > > -# SUBARCH tells the usermode build what the underlying arch is. That is set > -# first, and if a usermode build is happening, the "ARCH=um" on the command > -# line overrides the setting of ARCH below. If a native build is happening, > -# then ARCH is assigned, getting whatever value it gets normally, and > -# SUBARCH is subsequently ignored. > - > -SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ > - -e s/sun4u/sparc64/ \ > - -e s/arm.*/arm/ -e s/sa110/arm/ \ > - -e s/s390x/s390/ -e s/parisc64/parisc/ \ > - -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ > - -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \ > - -e s/riscv.*/riscv/) > +include scripts/subarch.include
What is the reason for this SUBARCH block move to to scripts/subarch.include? Is this necessary for adding headers install dependency to lib.mk?
This is needed to create headers for cross build.
I am sorry for the delay on this patch. I am going to get this into 4.19. If anybody has objections, please let me.
Anders! Will be able to rebase the patch and send me the latest. I think I have Acks from kvm, android, and vm so far.
I may be missing something about the tools/ directory, but why isn't it like this?
kselftest: headers_install $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests
That wont work if you cross compile, since you wont run the tests where you build them.
So why does a similar dependency work for samples in the main Makefile (even listed twice!)?
Documentation/ samples/: headers_install
samples: headers_install
Or perhaps this also doesn't work?
Then you can argue that we should break it up in a build and run rule. However, my understanding how people just build and run the the tests for that particular subsystem that they develop for, like: make -C tools/testing/selftests/<subsystem>/
I'm still a bit puzzled: how can you "build and run" the tests when cross-compiling, as you don't run the tests where you build them?
Thanks!
Gr{oetje,eeting}s,
Geert