[webkit-qt] Failed to build QtWebKit with 3d-canvas enabled

[Joseph Tsai]

Hello,

Actually, I've applied Bug #56723, and the bug with undefined
references of OpenGL functions is not the case of Bug #56723.

I've dug in a little of how QtWebKit4.dll is built. Viewing the
command line of making QtWebKit4.dll with --3d-canvas enabled, I found
that -lopengl32 is placed before -lwebcore, and all required OpenGL
function references in libwebcore.a  are all undefined while linking.
(although they are declared in libopengl32.a)

When I link QtWebKit4.dll manually by moving -lopengl32 to the end of
the command line, it succeeded! This means that the order of library
linking is the cause of this problem.


2011/3/27 Andras Becsi <abecsi at inf.u-szeged.hu>:
> Hello,
>
> on trunk there is currently a linking issue with MinGW, and this error also
> seems to be related to that. The following bug has already a patch uploaded,
> but it didn't land yet:
>
> https://bugs.webkit.org/show_bug.cgi?id=56723
>
>
> BR,
>  Andras
>
> 2011-03-27 11:22 keltezéssel, Joseph Tsai írta:
>>
>> Hello,
>>
>> I want to build QtWebKit with WebGL support under Windows XP, and use
>> the following command:
>>
>> ----------
>> perl Tools\Scripts\build-webkit --qt --3d-canvas --release
>> ----------
>>
>> When making QtWebKit4.dll, it tells that there exists a lot of
>> undefined references, and all of them are OpenGL functions. (i.e.
>> glDeleteTextures at 8)
>>
>> I've investigated the building process, and the strange thing is, the
>> command line making QtWebKit4.dll really contains an option:
>> -lopengl32, and libopengl32.a also contains the required symbols.
>> (i.e. glDeleteTextures at 8)
>>
>> Did I miss something?
>>
>> ----------
>>
>> OS: Windows XP
>> Qt SDK version: 4.7.1
>> WebKit trunk revision: 81886
>> Bug 56723 has been patched: https://bugs.webkit.org/show_bug.cgi?id=56723
>> Use MinGW to build QtWebKit (MinGW is embedded in Qt SDK)
>> Command line to build QtWebKit: perl Tools\Scripts\build-webkit --qt
>> --3d-canvas --release
>>
>> The command for building QtWebKit4.dll:
>> g++ -enable-stdcall-fixup -Wl,-enable-auto-import
>> -Wl,-enable-runtime-pseudo-reloc -Wl,-s -mthreads -Wl -shared
>>
>> -Wl,--out-implib,e:\work\src.QtWebKit.Windows.r81886-WebGL\WebKitBuild\Release\lib\libQtWebKit4.a
>> -o ..\..\lib\QtWebKit4.dll object_script.QtWebKit.Release
>> -L"..\..\WebCore\release" -L"..\..\JavaScriptCore\release"
>> -L"e:\work\Qt\2010.05\qt\lib" -lglu32 -lopengl32 -lgdi32 -luser32
>> obj\release\QtWebKit_resource_res.o -lwebcore -ljscore -ladvapi32
>> -lgdi32 -lshell32 -lshlwapi -luser32 -lversion -lphonon4 -lgdi32
>> -lole32 -luser32 -lwinmm -lQtXmlPatterns4 -lQtOpenGL4 -lQtGui4
>> -lQtNetwork4 -lQtCore4
>>
>>
>>
>> _______________________________________________
>> webkit-qt mailing list
>> webkit-qt at lists.webkit.org
>> http://lists.webkit.org/mailman/listinfo.cgi/webkit-qt
>
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