[LTP] [PATCH] libs: fix sporadic out-of-tree build failures related to libs

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> Reported-by: Petr Vorel <pvorel@suse.cz>
> Cc: Cyril Hrubis <chrubis@suse.cz>
> Signed-off-by: Jan Stancek <jstancek@redhat.com>
> ---
>  include/mk/testcases.mk | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/include/mk/testcases.mk b/include/mk/testcases.mk
> index 131854ec7346..4cbb37640687 100644
> --- a/include/mk/testcases.mk
> +++ b/include/mk/testcases.mk
> @@ -43,17 +43,19 @@ LDLIBS		+= -lltp
>  
>  ifdef LTPLIBS
>  
> -LTPLIBS_DIRS = $(addprefix $(abs_top_builddir)/libs/lib, $(LTPLIBS))
> +LTPLIBS_DIRS = $(addprefix libs/lib, $(LTPLIBS))
>  LTPLIBS_FILES = $(addsuffix .a, $(addprefix $(abs_top_builddir)/libs/, $(foreach LIB,$(LTPLIBS),lib$(LIB)/lib$(LIB))))
>  
>  MAKE_DEPS += $(LTPLIBS_FILES)
>  
>  $(LTPLIBS_FILES): $(LTPLIBS_DIRS)
> -	$(MAKE) -C "$^" -f "$^/Makefile" all
> +	$(MAKE) -C "$(abs_top_builddir)/$^" -f "$(abs_top_srcdir)/$^/Makefile" all
>  
>  LDFLAGS += $(addprefix -L$(top_builddir)/libs/lib, $(LTPLIBS))
>  
> +$(LTPLIBS_DIRS): %:
> +	mkdir -p "$(abs_top_builddir)/$@"

The problem here is that unless the paths in LTPLIBS_DIRS match existing
files the mkdir -p is executed every time LTPLIBS is defined in
Makefile. I guess that we can put the absolute paths back to the
LTPLIBS_DIRS variable and use $(subst ..) to replace the builddir with
srcdir but I wonder if there is a better solution.

-- 
Cyril Hrubis
chrubis@suse.cz