[SPDK] Re: Unit test failure for review submission

Hi Wenhua,

Could you try:

CC=clang CXX=clang++ ./configure
make

There is a bug in our dpdkbuild/Makefile, so please still file an issue for it.  But the above works on my system and should unblock you.

The problem is that DPDK gets configured and built based on the compiler specified when SPDK's configure script was called, not the one specified on the make file.  That's a bug.  We need to fix how CC_TYPE is evaluated in dpdkbuild/Makefile.

-Jim

On 5/1/20, 7:52 AM, "Harris, James R" <james.r.harris(a)intel.com> wrote:

    Hi Wenhua,

    Thanks for the report.  Can you file a github issue for this?  There's no review link required - it's easily reproducible by just running "./configure --enable-werror; make CC=clang CXX=clang++".  It's possible this has been fixed with more recent DPDK, or there is some flag we can pass to the DPDK build to disable this warning.

    Regards,

    -Jim




    On 5/1/20, 5:45 AM, "Luse, Paul E" <paul.e.luse(a)intel.com> wrote:

        Hi Wenhua,

        Can you provide a link to the actual review?

        Thanks
        Paul

        -----Original Message-----
        From: Wenhua Liu [mailto:liuw(a)vmware.com] 
        Sent: Thursday, April 30, 2020 8:05 PM
        To: Storage Performance Development Kit <spdk(a)lists.01.org>
        Subject: [SPDK] Unit test failure for review submission

        Hi,

        I tried to submit a change for review, some unit test was run and failed, but I did not touch any of these files. I’m on top of the master branch.




        warning: redirecting to https://review.spdk.io/gerrit/spdk/spdk/



        Running make with clang ...

                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

        /home/vmware/spdk/spdk/dpdk/build/include/rte_memcpy.h:359:23: error: cast from 'uint8_t *' (aka 'unsigned char *') to '__m256i *' increases required alignment from 1 to 32 [-Werror,-Wcast-align]

                        _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 1 * 32), ymm1);

                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

        /home/vmware/spdk/spdk/dpdk/build/include/rte_memcpy.h:360:23: error: cast from 'uint8_t *' (aka 'unsigned char *') to '__m256i *' increases required alignment from 1 to 32 [-Werror,-Wcast-align]

                        _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 2 * 32), ymm2);

                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

        /home/vmware/spdk/spdk/dpdk/build/include/rte_memcpy.h:361:23: error: cast from 'uint8_t *' (aka 'unsigned char *') to '__m256i *' increases required alignment from 1 to 32 [-Werror,-Wcast-align]

                        _mm256_storeu_si256((__m256i *)((uint8_t *)dst + 3 * 32), ymm3);

                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

        12 errors generated.

        make[8]: *** [/home/vmware/spdk/spdk/dpdk/mk/internal/rte.compile-pre.mk:114: malloc_heap.o] Error 1

        make[7]: *** [/home/vmware/spdk/spdk/dpdk/mk/rte.subdir.mk:37: eal] Error 2

        make[6]: *** [/home/vmware/spdk/spdk/dpdk/mk/rte.subdir.mk:37: linux] Error 2

        make[5]: *** [/home/vmware/spdk/spdk/dpdk/mk/rte.subdir.mk:37: librte_eal] Error 2

        make[4]: *** [/home/vmware/spdk/spdk/dpdk/mk/rte.sdkbuild.mk:48: lib] Error 2

        make[3]: *** [/home/vmware/spdk/spdk/dpdk/mk/rte.sdkroot.mk:99: all] Error 2

        make[2]: *** [Makefile:12: all] Error 2

        make[1]: *** [Makefile:150: all] Error 2

        make: *** [/home/vmware/spdk/spdk/mk/spdk.subdirs.mk:44: dpdkbuild] Error 2



        ERROR make CC=clang CXX=clang++ returned errors!

        ERROR Fix the problem and use 'git commit' to update your changes.

        ERROR See /home/vmware/spdk/spdk/make.log for more information.



        error: failed to push some refs to 'https://review.spdk.io/spdk/spdk'



        Checking make.log, I did not see any test failed.



        What could be wrong?





        Thanks,

        -Wenhua Liu
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