[LTP] [RFC PATCH v2 1/2] Add 'make check' and clang-check to build system

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> > $ make check
> > make: *** No rule to make target 'check'.  Stop.
> >
> > $ cd lib && make check
> > CHECK lib/cloner.c
> > CHECK lib/get_path.c
> > CHECK lib/parse_opts.c
> > CHECK lib/random_range.c
> > CHECK lib/safe_file_ops.c
> > CHECK lib/safe_macros.c
> > CHECK lib/safe_net.c
> > CHECK lib/safe_pthread.c
> > CHECK lib/safe_stdio.c
> > CHECK lib/self_exec.c
> > CHECK lib/tlibio.c
> > tst_af_alg.c:16:2: CHECK ERROR: TEST() macro should not be used in library
> > tst_af_alg.c:27:2: CHECK ERROR: TEST() macro should not be used in library
> > tst_af_alg.c:74:2: CHECK ERROR: TEST() macro should not be used in library
> > tst_af_alg.c:109:2: CHECK ERROR: TEST() macro should not be used in library
> > tst_af_alg.c:119:2: CHECK ERROR: TEST() macro should not be used in library
> > make: *** [../include/mk/rules.mk:46: check-tst_af_alg] Error 1
> >
> > Similarly what I added to my patchset which also adds new make target:
> > https://patchwork.ozlabs.org/project/ltp/patch/20210603183827.24339-2-pvorel@suse.cz/
> > Although my code has duplicate issue:
> > ../include/mk/generic_trunk_target.inc:105: warning: overriding recipe for target 'check-c'
> > ../include/mk/generic_leaf_target.inc:110: warning: ignoring old recipe for target 'check-c'
> > ../include/mk/generic_trunk_target.inc:105: warning: overriding recipe for target 'check-shell'
> > ../include/mk/generic_leaf_target.inc:118: warning: ignoring old recipe for target 'check-shell'
> >
> > Also make check on regular test expect it's a library. IMHO these two must be
> > probably separated:
> >
> > $ cd testcases/kernel/syscalls/fchown/ && make check
> > CHECK testcases/kernel/syscalls/fchown/fchown01.c
> > CHECK testcases/kernel/syscalls/fchown/fchown02.c
> > CHECK testcases/kernel/syscalls/fchown/fchown03.c
> > CHECK testcases/kernel/syscalls/fchown/fchown04.c
> > fchown05.c:80:4: CHECK ERROR: TEST() macro should not be used in library
> > make: *** [../../../../include/mk/rules.mk:46: check-fchown05] Error 1
> 
> It fails because it is using the old test API, so there is no struct
> tst_test test var. I don't think we need to separate the checker. It can
> detect what type of file (translation unit) it is processing. In the
> case of old API tests, I would simply disable any checks.
> 
> All the old tests and test libraries will have something in common. For
> the tests, they all import "test.h" (even if through another header), so
> we can identify them by that.

For the top level library we pass -DLTPLIB in CFLAGS, not sure if that
could be used to identify library code...

-- 
Cyril Hrubis
chrubis@suse.cz