Hi Thomas,

On 23/03/2018 2:55 PM, Thomas Stüfe wrote:
Hi David,

would it not be pragmatic to accept Ao's patch - it looks fine to me - since it certainly would not make matters worse. And let Magnus follow up with a cleanup change later?

Well I hope Magnus's change is forthcoming. AFAICS it's as easy to write this only for x86 as it is to exclude it for non x86. Honestly I don't know why the Aarch64 patch was done the way it was - there must be some subtlety here that I'm not aware of.

Ao has the fix locally and I'm assuming we don't have a large number of MIPS users waiting for this urgently (and they can trivially patch it locally anyway). Otherwise there's just more bug processing overhead.

David

Best Regards, Thomas

On Fri, Mar 23, 2018 at 2:37 AM, David Holmes <david.hol...@oracle.com <mailto:david.hol...@oracle.com>> wrote:

    On 23/03/2018 11:33 AM, Ao Qi wrote:

        So what should be the next? Is that another problem, or should the
        MIPS broken configure be fixed together?


    There should be one proper fix to cover all affected platforms.

    David


        2018-03-23 5:04 GMT+08:00 David Holmes <david.hol...@oracle.com
        <mailto:david.hol...@oracle.com>>:

            On 23/03/2018 12:13 AM, Erik Joelsson wrote:


                Hello,

                The fix looks correct, but I'm starting to think that
                maybe the
                conditional should be inverted and instead list the
                architectures that
                actually use -m64? It seems a whole lot of them don't.



            Magnus indicated he was working on a better solution when he
            put in the
            quick-fix check for Aarch64. Yes this should only add -m64
            on compilers and
            platforms that support it.

            David
            -----


                /Erik


                On 2018-03-21 23:24, Ao Qi wrote:


                    Hi,

                    I found configure of
                    http://hg.openjdk.java.net/jdk/jdk
                    <http://hg.openjdk.java.net/jdk/jdk> was broken on
                    MIPS.

                    the output of configure:
                    ...
                    configure: Using default toolchain gcc (GNU Compiler
                    Collection)
                    checking for gcc... /usr/bin/gcc
                    checking resolved symbolic links for CC...
                    /usr/bin/mips64el-linux-gnuabi64-gcc-6
                    configure: Using gcc C compiler version 6.3.0 [gcc
                    (Debian 6.3.0-18)
                    6.3.0 20170516]
                    checking whether the C compiler works... no
                    configure: error: in `/home/loongson/aoqi/jdk':
                    configure: error: C compiler cannot create executables
                    See `config.log' for more details
                    configure exiting with result code 77
                    ...

                    the related content of config.log:
                    ...
                    configure:35256: checking whether the C compiler works
configure:35278: /usr/bin/gcc -m64    -m64  conftest.c  >&5
                    gcc: error: unrecognized command line option '-m64'
                    gcc: error: unrecognized command line option '-m64'
                    configure:35282: $? = 1
                    configure:35320: result: no
                    configure: failed program was:
                    | /* confdefs.h */
                    | #define PACKAGE_NAME "OpenJDK"
                    | #define PACKAGE_TARNAME "openjdk"
                    | #define PACKAGE_VERSION "jdk9"
                    | #define PACKAGE_STRING "OpenJDK jdk9"
                    | #define PACKAGE_BUGREPORT
                    "build-dev@openjdk.java.net
                    <mailto:build-dev@openjdk.java.net>"
                    | #define PACKAGE_URL "http://openjdk.java.net";
                    | /* end confdefs.h.  */
                    |
                    | int
                    | main ()
                    | {
                    |
                    |   ;
                    |   return 0;
                    | }
                    configure:35325: error: in `/home/loongson/aoqi/jdk':
                    configure:35327: error: C compiler cannot create
                    executables
                    See `config.log' for more details
                    ...


                    I made a small patch to pass the configure:

                    $ hg diff make/autoconf/flags.m4
                    diff -r 3acb379b8672 make/autoconf/flags.m4
                    --- a/make/autoconf/flags.m4 Thu Mar 22 08:09:51
                    2018 +0800
                    +++ b/make/autoconf/flags.m4 Thu Mar 22 12:55:00
                    2018 +0800
                    @@ -237,7 +237,11 @@
                            MACHINE_FLAG="-q${OPENJDK_TARGET_CPU_BITS}"
                          elif test "x$TOOLCHAIN_TYPE" != xmicrosoft; then
                            if test "x$OPENJDK_TARGET_CPU" != xaarch64 &&
                    -        test "x$OPENJDK_TARGET_CPU" != xarm; then
                    +        test "x$OPENJDK_TARGET_CPU" != xarm &&
                    +        test "x$OPENJDK_TARGET_CPU" != xmips &&
                    +        test "x$OPENJDK_TARGET_CPU" != xmipsel &&
                    +        test "x$OPENJDK_TARGET_CPU" != xmips64 &&
                    +        test "x$OPENJDK_TARGET_CPU" != xmips64el; then
                              MACHINE_FLAG="-m${OPENJDK_TARGET_CPU_BITS}"
                            fi
                          fi


                    I think this is the same problem with bug 8199052
                    and 8199152. Could
                    someone help to review the change?

                    Thanks,
                    Ao Qi





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