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    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:
    <blockquote cite="mid:e739f5ab4d3f4a5199de0a77f26e5601@sap.com"
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        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US">Hi
            Phil,  I think your idea to guard with
            <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 lang="EN-US">#ifdef
            PNG_POWERPC_VSX_API_SUPPORTED</span><span
            style="color:windowtext" lang="EN-US"><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">Is
            fine, should I prepare a webrev   using this guard ?<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="color:windowtext" lang="EN-US"><o:p> </o:p></span></p>
        <ul style="margin-top:0cm" type="disc">
          <li class="MsoListParagraph"
            style="color:windowtext;margin-left:0cm;mso-list:l1 level1
            lfo5">
            <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><span
              lang="EN-US"><o:p></o:p></span></li>
        </ul>
        <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">Yes
            it is a good idea to report this upstream as well  at
            libpng.<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 lang="EN-US">Best regards, Matthias<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></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 class="moz-txt-link-freetext" href="mailto:philip.race@oracle.com">mailto:philip.race@oracle.com</a>]
                  <br>
                  <b>Sent:</b> Freitag, 22. Dezember 2017 19:08<br>
                  <b>To:</b> Baesken, Matthias
                  <a class="moz-txt-link-rfc2396E" href="mailto:matthias.baesken@sap.com"><matthias.baesken@sap.com></a>;
                  <a class="moz-txt-link-abbreviated" href="mailto:2d-dev@openjdk.java.net">2d-dev@openjdk.java.net</a><br>
                  <b>Cc:</b> 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" 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>
            <span style="font-size:12.0pt;mso-fareast-language:DE"><o:p></o:p></span></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 moz-do-not-send="true"
                        href="mailto:philip.race@oracle.com">philip.race@oracle.com</a>)
                      <a moz-do-not-send="true"
                        href="mailto:philip.race@oracle.com"><philip.race@oracle.com></a><br>
                      <b>Cc:</b> Doerr, Martin <a
                        moz-do-not-send="true"
                        href="mailto:martin.doerr@sap.com"><martin.doerr@sap.com></a>;
                      Simonis, Volker
                      <a moz-do-not-send="true"
                        href="mailto:volker.simonis@sap.com"><volker.simonis@sap.com></a>;
                      <a moz-do-not-send="true"
                        href="mailto:2d-dev@openjdk.java.net">
                        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 moz-do-not-send="true"
                  href="http://hg.openjdk.java.net/jdk/hs/rev/791d551bcdb8">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 lfo3"><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 lfo3"><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 lfo3"><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 lfo3"><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;font-family:"Times New
              Roman",serif;mso-fareast-language:DE"><o:p> </o:p></span></p>
        </div>
      </div>
    </blockquote>
  </body>
</html>