Re: [LTP] Problems compiling

[Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>]

Hi,

On 04/12/2014 12:37 AM, Mats Liljegren wrote:
> I recently updated my master branch of my ltp git repository, but I now
> have a compile error:
>
> make[6]: Entering directory `/nfs/hosts/sestonas06/homes/mlil/git/ltp/testcases/kernel/mem/lib'
> make[6]: ../../../../../testcases/kernel/mem/lib/Makefile: No such file or directory
>
> Anyone else having this problem?

Yeah, I also met this problem.
I guess it may be "testcases/kernel/mem/include/libmem.mk"  causing this issue.

I can reproduce this fail by following steps:

1, cd testcases/kernel/mem/lib
    rm libmem.a

2, then back to testcases/kernel/mem/hugetlb/hugemmap
    make

I got the similar error message:
make -C ../../../../../testcases/kernel/mem/lib -f "../../../../../testcases/kernel/mem/lib/Makefile" all
make[1]: Entering directory `/root/ltp-dev/testcases/kernel/mem/lib'
make[1]: ../../../../../testcases/kernel/mem/lib/Makefile: No such file or directory
make[1]: *** No rule to make target `../../../../../testcases/kernel/mem/lib/Makefile'.  Stop.
make[1]: Leaving directory `/root/ltp-dev/testcases/kernel/mem/lib'
make: *** [../../../../../testcases/kernel/mem/lib/libmem.a] Error 2

In testcases/kernel/mem/include/libmem.mk:

MEM_SRCDIR              := $(top_srcdir)/testcases/kernel/mem
LIBMEM_SRCDIR           := $(MEM_SRCDIR)/lib

MEM_DIR                 := $(top_builddir)/testcases/kernel/mem
LIBMEM_DIR              := $(MEM_DIR)/lib
LIBMEM                  := $(LIBMEM_DIR)/libmem.a
FILTER_OUT_DIRS         := $(LIBMEM_DIR)
CFLAGS                  += -I$(MEM_SRCDIR)/include
LDLIBS                  += $(NUMA_LIBS) -lmem -lltp
LDFLAGS                 += -L$(LIBMEM_DIR)

$(LIBMEM_DIR):
        mkdir -p "$@"

$(LIBMEM): $(LIBMEM_DIR)
        $(MAKE) -C $^ -f "$(LIBMEM_SRCDIR)/Makefile" all

MAKE_DEPS               += $(LIBMEM)

See the target $(LIBMEM). Since we have executed make command using the "-C" option, we do
not need to specify a make file with relative path.  We can just
execute like that: $(MAKE) -C $^ -f  "Makefile" all in this case.

Here the true reason is that when we change directory to $(LIBMEM_DIR), $(LIBMEM_SRCDIR)/Makefile
is not a valid path.

Regards,
Xiaoguang Wang



>
> Best regards
> Mats Liljegren
>
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