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    This looks fine to me.<br>
    <br>
    Martin asked (a while ago) if I knew where to report this upstream.<br>
    <br>
    I can only suggest what I find via search as being the libpng bug
    tracker :<br>
    <a class="moz-txt-link-freetext" href="https://sourceforge.net/p/libpng/bugs/">https://sourceforge.net/p/libpng/bugs/</a><br>
    <br>
    -phil<br>
    <br>
    <div class="moz-cite-prefix">On 01/17/2018 06:45 AM, Baesken,
      Matthias wrote:<br>
    </div>
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        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US">Hello
            I created a  bug + webrev  for  the  png /  libsplashscreen 
            build  issue seen on linux ppc64le .<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US">The
            error because of undefined  png_init_filter_functions_vsx
             is  :<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US">/open_jdk/jdk_2_build/linuxppc64le/support/native/java.desktop/libsplashscreen/pngrutil.o:
            In function `png_init_filter_functions': <br>
/open_jdk/jdk_2/jdk/src/java.desktop/share/native/libsplashscreen/libpng/pngrutil.c:4134:
            undefined reference to png_init_filter_functions_vsx' <br>
            <br>
            The issue has been observed on a SLES12 SP1 ppc64le build
            machine with "gcc version 4.8.5 (SUSE Linux)" . <o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US">Please
            review .<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US">Bug
            :<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext"><a
              href="https://bugs.openjdk.java.net/browse/JDK-8195615"
              moz-do-not-send="true">https://bugs.openjdk.java.net/browse/JDK-8195615</a><o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext">Webrev :<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext"><a
              href="http://cr.openjdk.java.net/%7Embaesken/webrevs/8195615/"
              moz-do-not-send="true">http://cr.openjdk.java.net/~mbaesken/webrevs/8195615/</a><o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext">Thanks,
            Matthias<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <div style="border:none;border-left:solid blue 1.5pt;padding:0cm
          0cm 0cm 4.0pt">
          <div>
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              1.0pt;padding:3.0pt 0cm 0cm 0cm">
              <p class="MsoNormal"><b><span
                    style="color:windowtext;mso-fareast-language:DE"
                    lang="EN-US">From:</span></b><span
                  style="color:windowtext;mso-fareast-language:DE"
                  lang="EN-US"> Philip Race
                  [<a class="moz-txt-link-freetext" href="mailto:philip.race@oracle.com">mailto:philip.race@oracle.com</a>]
                  <br>
                  <b>Sent:</b> Donnerstag, 28. Dezember 2017 18:09<br>
                  <b>To:</b> Baesken, Matthias
                  <a class="moz-txt-link-rfc2396E" href="mailto:matthias.baesken@sap.com"><matthias.baesken@sap.com></a><br>
                  <b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:2d-dev@openjdk.java.net">2d-dev@openjdk.java.net</a>; Doerr, Martin
                  <a class="moz-txt-link-rfc2396E" href="mailto:martin.doerr@sap.com"><martin.doerr@sap.com></a>; Simonis, Volker
                  <a class="moz-txt-link-rfc2396E" href="mailto:volker.simonis@sap.com"><volker.simonis@sap.com></a><br>
                  <b>Subject:</b> Re: jdk-hs ppc64le build error,
                  probably related to libpng update<o:p></o:p></span></p>
            </div>
          </div>
          <p class="MsoNormal"><o:p> </o:p></p>
          <p class="MsoNormal">This all sounds fine to me.<br>
            Definitely we should report this upstream to see what they
            say but<br>
            clearly we aren't bound to wait for an answer from there
            since this is<br>
            a build breakage for PPC. If someone upstream<br>
            comes back with a better answer we can update the fix.<br>
            <br>
            I think this png update will get backported to 8u at some
            point ..<br>
            the PPC port is supported on 8u, isn't it ? So we'll want to
            make<br>
            sure we have the fix before we do the backport.<br>
            <br>
            -phil.<br>
            <br>
            On 12/28/17, 5:07 AM, Baesken, Matthias wrote: <span
              style="font-size:12.0pt;mso-fareast-language:DE">
              <o:p></o:p></span></p>
          <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
            <p class="MsoNormal"><span style="color:windowtext"
                lang="EN-US">Hi Phil,  I think your idea to guard with
              </span><o:p></o:p></p>
            <p class="MsoNormal"><span style="color:windowtext"
                lang="EN-US"> </span><o:p></o:p></p>
            <p class="MsoNormal"><span lang="EN-US">#ifdef
                PNG_POWERPC_VSX_API_SUPPORTED</span><o:p></o:p></p>
            <p class="MsoNormal"><span style="color:windowtext"
                lang="EN-US"> </span><o:p></o:p></p>
            <p class="MsoNormal"><span style="color:windowtext"
                lang="EN-US">Is fine, should I prepare a webrev   using
                this guard ?</span><o:p></o:p></p>
            <p class="MsoNormal"><span style="color:windowtext"
                lang="EN-US"> </span><o:p></o:p></p>
            <ul style="margin-top:0cm" type="disc">
              <li class="MsoNormal"
                style="color:windowtext;margin-left:0cm;mso-list:l1
                level1 lfo3">
                <span style="color:black" lang="EN-US">Wrapping in that
                  check might be OK (for PNG_POWERPC_VSX_API_SUPPORTED)
                  but you'll want to report this upstream.</span><o:p></o:p></li>
            </ul>
            <p class="MsoNormal"><span style="color:windowtext"
                lang="EN-US"> </span><o:p></o:p></p>
            <p class="MsoNormal"><span style="color:windowtext"
                lang="EN-US">Yes it is a good idea to report this
                upstream as well  at libpng.</span><o:p></o:p></p>
            <p class="MsoNormal"><span style="color:windowtext"
                lang="EN-US"> </span><o:p></o:p></p>
            <p class="MsoNormal"><span lang="EN-US">Best regards,
                Matthias</span><o:p></o:p></p>
            <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
            <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
            <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
            <div style="border:none;border-left:solid blue
              1.5pt;padding:0cm 0cm 0cm 4.0pt">
              <div>
                <div style="border:none;border-top:solid #E1E1E1
                  1.0pt;padding:3.0pt 0cm 0cm 0cm">
                  <p class="MsoNormal"><b><span
                        style="color:windowtext;mso-fareast-language:DE"
                        lang="EN-US">From:</span></b><span
                      style="color:windowtext;mso-fareast-language:DE"
                      lang="EN-US"> Phil Race [<a
                        href="mailto:philip.race@oracle.com"
                        moz-do-not-send="true">mailto:philip.race@oracle.com</a>]
                      <br>
                      <b>Sent:</b> Freitag, 22. Dezember 2017 19:08<br>
                      <b>To:</b> Baesken, Matthias <a
                        href="mailto:matthias.baesken@sap.com"
                        moz-do-not-send="true"><matthias.baesken@sap.com></a>;
                      <a href="mailto:2d-dev@openjdk.java.net"
                        moz-do-not-send="true">2d-dev@openjdk.java.net</a><br>
                      <b>Cc:</b> Doerr, Martin <a
                        href="mailto:martin.doerr@sap.com"
                        moz-do-not-send="true"><martin.doerr@sap.com></a>;
                      Simonis, Volker
                      <a href="mailto:volker.simonis@sap.com"
                        moz-do-not-send="true"><volker.simonis@sap.com></a><br>
                      <b>Subject:</b> Re: jdk-hs ppc64le build error,
                      probably related to libpng update</span><o:p></o:p></p>
                </div>
              </div>
              <p class="MsoNormal"> <o:p></o:p></p>
              <p class="MsoNormal" style="margin-bottom:12.0pt">I expect
                that will fix it but I wonder if the problem is that all
                of this needs<br>
                to be guarded by checking :-<br>
                <br>
                #ifdef PNG_POWERPC_VSX_API_SUPPORTED<br>
                <br>
                It looks to me configure would have set that if it had
                been run on PPC AND<br>
                you have passed --enable-powerpc-vsx to configure<br>
                <br>
                But of course I did not.<br>
                <br>
                And someone can set it unsupported anyway.<br>
                <br>
                So this seems like a libpng bug.<br>
                <br>
                Wrapping in that check might be OK (for
                PNG_POWERPC_VSX_API_SUPPORTED) but<br>
                you'll want to report this upstream.<br>
                <br>
                I have no intention of pulling in the accelerated code
                .. even for intel ... this<br>
                library is used only for splashscreen.<br>
                <br>
                -phil.<br>
                <br>
                <br>
                <br>
                <o:p></o:p></p>
              <div>
                <p class="MsoNormal">On 12/21/2017 07:13 AM, Baesken,
                  Matthias wrote:<o:p></o:p></p>
              </div>
              <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
                <p class="MsoNormal"><span lang="EN-US">>Do  you 
                    have  a version of libpng  available that  contains 
                    the missing function  png_init_filter_functions_vsx 
                    ?</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">>Or do you
                    have an idea where it should come from (I cannot
                    find it in the main libpng sources).</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">>To fix the
                    build, we could probably disable  the part  bringing
                    in png_init_filter_functions_vsx   in
                    png_init_filter_functions_vsx  .</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">Hello, small
                    update -  here is a fix that  disables the  libpng 
                    vsx optimizations  on ppc64  (and fixes the build
                    issue).</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">Should I prepare
                    a webrev ?  Or how to get  a ppc64 le  / be   
                    png_init_filter_functions_vsx   implementation ?</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">Best regards,
                    Matthias</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">-----------------------</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">diff -r
                    d55bee3727de
                    src/java.desktop/share/native/libsplashscreen/libpng/pngpriv.h</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">---
                    a/src/java.desktop/share/native/libsplashscreen/libpng/pngpriv.h   
                    Tue Dec 19 17:31:53 2017 -0500</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">+++
                    b/src/java.desktop/share/native/libsplashscreen/libpng/pngpriv.h
                    Wed Dec 20 17:16:01 2017 +0100</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">@@ -220,12
                    +220,15 @@</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">#  endif</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">#endif</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">+/* for now
                    avoid the ppc64 vsx optimizations */</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">#ifndef
                    PNG_POWERPC_VSX_OPT</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">-#  if
                    defined(__PPC64__) && defined(__ALTIVEC__)
                    && defined(__VSX__)</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">-#     define
                    PNG_POWERPC_VSX_OPT 2</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">-#  else</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">+/*</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">+ * #  if
                    defined(__PPC64__) && defined(__ALTIVEC__)
                    && defined(__VSX__)</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">+ * #     define
                    PNG_POWERPC_VSX_OPT 2</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">+ * #  else</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">+ */</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">#     define
                    PNG_POWERPC_VSX_OPT 0</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">-#  endif</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">+/* #  endif */</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">#endif</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US"> #ifndef
                    PNG_INTEL_SSE_OPT</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US">-----------------------</span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                <div style="border:none;border-left:solid blue
                  1.5pt;padding:0cm 0cm 0cm 4.0pt">
                  <div>
                    <div style="border:none;border-top:solid #E1E1E1
                      1.0pt;padding:3.0pt 0cm 0cm 0cm">
                      <p class="MsoNormal"><b><span
                            style="mso-fareast-language:DE" lang="EN-US">From:</span></b><span
                          style="mso-fareast-language:DE" lang="EN-US">
                          Baesken, Matthias
                          <br>
                          <b>Sent:</b> Mittwoch, 20. Dezember 2017 13:04<br>
                          <b>To:</b> Phil Race (<a
                            href="mailto:philip.race@oracle.com"
                            moz-do-not-send="true">philip.race@oracle.com</a>)
                          <a href="mailto:philip.race@oracle.com"
                            moz-do-not-send="true"><philip.race@oracle.com></a><br>
                          <b>Cc:</b> Doerr, Martin <a
                            href="mailto:martin.doerr@sap.com"
                            moz-do-not-send="true"><martin.doerr@sap.com></a>;
                          Simonis, Volker
                          <a href="mailto:volker.simonis@sap.com"
                            moz-do-not-send="true"><volker.simonis@sap.com></a>;
                          <a href="mailto:2d-dev@openjdk.java.net"
                            moz-do-not-send="true">
                            2d-dev@openjdk.java.net</a><br>
                          <b>Subject:</b> jdk-hs ppc64le build error,
                          probably related to libpng update</span><o:p></o:p></p>
                    </div>
                  </div>
                  <p class="MsoNormal"> <o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US">Hi Phil, it
                      looks like  the recent  png lib change</span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><span style="font-size:10.0pt">8183960:
                      Upgrade to libpng 1.6.34</span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><a
                      href="http://hg.openjdk.java.net/jdk/hs/rev/791d551bcdb8"
                      moz-do-not-send="true">http://hg.openjdk.java.net/jdk/hs/rev/791d551bcdb8</a><o:p></o:p></p>
                  <p class="MsoNormal"> <o:p></o:p></p>
                  <p class="MsoNormal"><span style="font-size:9.0pt"
                      lang="EN-US">+#if PNG_POWERPC_VSX_OPT > 0</span><o:p></o:p></p>
                  <p class="MsoNormal"><span style="font-size:9.0pt"
                      lang="EN-US">+#  define PNG_FILTER_OPTIMIZATIONS
                      png_init_filter_functions_vsx</span><o:p></o:p></p>
                  <p class="MsoNormal"><span style="font-size:9.0pt"
                      lang="EN-US">+#  define
                      PNG_POWERPC_VSX_IMPLEMENTATION 1</span><o:p></o:p></p>
                  <p class="MsoNormal"><span style="font-size:9.0pt"
                      lang="EN-US">+#endif</span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US">Causes  build
                      errors  in  our  linuxppc64le   openjdk  jdk-hs
                      (fast)dbg  build .</span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US">We get  this
                      linker error :</span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal" style="margin-left:35.4pt"><span
                      lang="EN-US">pngrutil.c:(.text+0x4824): undefined
                      reference to `png_init_filter_functions_vsx'</span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US">Do  you  have 
                      a version of libpng  available that  contains  the
                      missing function  png_init_filter_functions_vsx  ?</span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US">Or do you have
                      an idea where it should come from (I cannot find
                      it in the main libpng sources).</span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US">To fix the
                      build, we could probably disable  the part 
                      bringing in png_init_filter_functions_vsx   in
                      png_init_filter_functions_vsx  .</span><o:p></o:p></p>
                  <p class="MsoNormal"><span style="font-size:9.0pt"
                      lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US">Thanks,
                      Matthias</span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
                  <p class="MsoNormal"><span lang="EN-US">Error message
                      :</span><o:p></o:p></p>
                  <p class="MsoNormal"> <o:p></o:p></p>
                  <ul style="margin-top:0cm" type="disc">
                    <li class="MsoNormal"
                      style="margin-left:0cm;mso-list:l0 level1 lfo6"><span
                        lang="EN-US">/hs/support/native/java.desktop/libsplashscreen/pngrutil.o:
                        In function `png_read_filter_row':</span><o:p></o:p></li>
                    <li class="MsoNormal"
                      style="margin-left:0cm;mso-list:l0 level1 lfo6"><span
                        lang="EN-US">pngrutil.c:(.text+0x4824):
                        undefined reference to
                        `png_init_filter_functions_vsx'</span><o:p></o:p></li>
                    <li class="MsoNormal"
                      style="margin-left:0cm;mso-list:l0 level1 lfo6"><span
                        lang="EN-US">collect2: error: ld returned 1 exit
                        status</span><o:p></o:p></li>
                    <li class="MsoNormal"
                      style="margin-left:0cm;mso-list:l0 level1 lfo6"><span
                        lang="EN-US">Awt2dLibraries.gmk:928: recipe for
                        target
                        '/hs/support/modules_libs/java.desktop/libsplashscreen.so'
                        failed</span><o:p></o:p></li>
                  </ul>
                </div>
              </blockquote>
              <p class="MsoNormal"><span style="font-size:12.0pt"> </span><o:p></o:p></p>
            </div>
          </blockquote>
        </div>
      </div>
    </blockquote>
    <br>
  </body>
</html>