Re: [PATCH 06/10] selftests: landlock: Add the uapi headers include variable

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On 1/18/22 5:35 PM, Mickaël Salaün wrote:
> 
> On 18/01/2022 12:29, Muhammad Usama Anjum wrote:
>> Out of tree build of this test fails if relative path of the output
>> directory is specified. Remove the un-needed include paths and use
>> KHDR_INCLUDES to correctly reach the headers.
>>
>> Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
>> ---
>>   tools/testing/selftests/landlock/Makefile | 11 +++--------
>>   1 file changed, 3 insertions(+), 8 deletions(-)
>>
>> diff --git a/tools/testing/selftests/landlock/Makefile
>> b/tools/testing/selftests/landlock/Makefile
>> index a99596ca9882..44c724b38a37 100644
>> --- a/tools/testing/selftests/landlock/Makefile
>> +++ b/tools/testing/selftests/landlock/Makefile
>> @@ -1,6 +1,6 @@
>>   # SPDX-License-Identifier: GPL-2.0
>>   -CFLAGS += -Wall -O2
>> +CFLAGS += -Wall -O2 $(KHDR_INCLUDES)
>>     src_test := $(wildcard *_test.c)
>>   @@ -12,13 +12,8 @@ KSFT_KHDR_INSTALL := 1
>>   OVERRIDE_TARGETS := 1
>>   include ../lib.mk
>>   -khdr_dir = $(top_srcdir)/usr/include
> 
> This should be updated to:
> khdr_dir = ${abs_srctree}/usr/include
> 
> Using a global KHDR_DIR instead of khdr_dir could be useful for others too.
> 
>> -
>> -$(khdr_dir)/linux/landlock.h: khdr
>> -    @:
> 
> This should be kept as is, otherwise we loose this check to rebuild the
> headers if linux/landlock.h is updated, which is handy for development.
> KVM lost a similar behavior with this patch series.
> 
>> -
>>   $(OUTPUT)/true: true.c
>>       $(LINK.c) $< $(LDLIBS) -o $@ -static
>>   -$(OUTPUT)/%_test: %_test.c $(khdr_dir)/linux/landlock.h
>> ../kselftest_harness.h common.h
> 
> This should not be changed.
> 
>> -    $(LINK.c) $< $(LDLIBS) -o $@ -lcap -I$(khdr_dir)
>> +$(OUTPUT)/%_test: %_test.c ../kselftest_harness.h common.h
>> +    $(LINK.c) $< $(LDLIBS) -o $@ -lcap
> 
> This doesn't work when building in the local directory because
> $abs_srctree and $KHDR_INCLUDES are empty:
> cd tools/testing/selftests/landlock && make
Hi,

Thank you. I'll update this path and the kvm one. I'll send a V2.

Thanks,
Usama



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