WebKit compilation error with GCC

[piotr.dobrogost]

Compiling Qt 4.5.2 with GCC 4.3.0 (MinGW) on Windows Vista I got an error which I show at the end of the post.
Has someone managed to fix this error?


g++ -c -include tmp\obj\debug_shared\WebKit_pch.h -Wreturn-type -fno-strict-alia
sing -frtti -fexceptions -mthreads -DQT_SHARED -DQT_THREAD_SUPPORT -DUNICODE -DQ
T_LARGEFILE_SUPPORT -DBUILDING_QT__=1 -DUSE_SYSTEM_MALLOC -DNDEBUG -DQT_MAKEDLL
-DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -D_USE_MATH_DEFIN
ES -DBUILD_WEBKIT -D_HAS_TR1=0 -DENABLE_OFFLINE_WEB_APPLICATIONS=1 -DENABLE_DOM_
STORAGE=1 -DENABLE_ICONDATABASE=1 -DENABLE_DATABASE=1 -DENABLE_DASHBOARD_SUPPORT
=0 -DENABLE_XPATH=1 -DENABLE_WML=0 -DENABLE_SVG=1 -DENABLE_SVG_FONTS=1 -DENABLE_
SVG_FILTERS=1 -DENABLE_SVG_FOREIGN_OBJECT=1 -DENABLE_SVG_ANIMATION=1 -DENABLE_SV
G_AS_IMAGE=1 -DENABLE_SVG_USE=1 -DENABLE_VIDEO=0 -DENABLE_NETSCAPE_PLUGIN_API=1
-DWTF_USE_JAVASCRIPTCORE_BINDINGS=1 -DWTF_CHANGES=1 -DBUILDING_QT__ -DSQLITE_COR
E -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DQT_DLL -DQT_GUI_LIB -DQT
_NETWORK_LIB -DQT_CORE_LIB -I"..\..\..\..\include\QtCore" -I"..\..\..\..\include
\QtNetwork" -I"..\..\..\..\include\QtGui" -I"..\..\..\..\include" -I"storage" -I
"..\WebKit\qt\Api" -I"..\..\..\..\include\QtWebKit" -I"tmp\rcc\debug_shared" -I"
tmp" -I"." -I"..\JavaScriptCore" -I"..\JavaScriptCore\ForwardingHeaders" -I"..\J
avaScriptCore\interpreter" -I"..\JavaScriptCore\bytecode" -I"..\JavaScriptCore\d
ebugger" -I"..\JavaScriptCore\parser" -I"..\JavaScriptCore\runtime" -I"z:\qt-src
\src\3rdparty\webkit\WebCore\..\JavaScriptCore\bin dings" -I"..\JavaScriptCore\wr
ec" -I"..\JavaScriptCore\jit" -I"..\JavaScriptCore\wtf" -I"tmp" -I"..\JavaScript
Core" -I"..\JavaScriptCore\parser" -I"..\JavaScriptCore\bytecompiler" -I"..\Java
ScriptCore\debugger" -I"..\JavaScriptCore\runtime" -I"..\JavaScriptCore\wtf" -I"
..\JavaScriptCore\wtf\unicode" -I"..\JavaScriptCore\interpreter" -I"..\JavaScrip
tCore\jit" -I"..\JavaScriptCore\profiler" -I"..\JavaScriptCore\wrec" -I"..\JavaS
criptCore\API" -I"..\..\webkit" -I"..\JavaScriptCore\ForwardingHeaders" -I"..\Ja
vaScriptCore\bytecode" -I"..\JavaScriptCore\assembler" -I"..\JavaScriptCore\pcre
" -I"z:\qt-src\src\3rdparty\webkit\WebKitBuild\Debug\JavaScri ptCore\tmp" -I"plat
form\qt" -I"platform\network\qt" -I"platform\graphics\filters" -I"platform\graph
ics\transforms" -I"platform\graphics\qt" -I"svg\graphics\qt" -I"loader" -I"page\
qt" -I"..\WebKit\qt\WebCoreSupport" -I"..\WebKit\qt\Api" -I"bridge\qt" -I"." -I"
ForwardingHeaders" -I"..\..\webkit" -I"platform" -I"platform\animation" -I"platf
orm\network" -I"platform\graphics" -I"svg\animation" -I"svg\graphics" -I"svg\gra
phics\filters" -I"platform\sql" -I"platform\text" -I"loader" -I"loader\appcache"
-I"loader\archive" -I"loader\icon" -I"css" -I"dom" -I"page" -I"page\animation"
-I"bridge" -I"editing" -I"rendering" -I"rendering\style" -I"history" -I"inspecto
r" -I"xml" -I"html" -I"wml" -I"bindings\js" -I"svg" -I"platform\image-decoders"
-I"plugins" -I"bridge" -I"bridge\c" -I"bridge\qt" -I"generated" -I"plugins\win"
-I"..\..\sqlite" -I"..\..\..\..\include\ActiveQt" -I"tmp\moc\debug_shared" -I"."
-I"..\..\..\..\mkspecs\win32-g++" -o tmp\obj\debug_shared\Timer.o platform\Time
r.cpp
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h: In member function 'void __gnu_cxx::_ComparableConcept<_Tp>::__constraints(
) [with _Tp = WebCore::TimerHeapIterator]':
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:62: instantiated from 'void __gnu_cxx::__function_requires() [with _Concep
t = __gnu_cxx::_ComparableConcept<WebCore::TimerHeapIterator>]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:529: instantiated from 'void __gnu_cxx::_RandomAccessIteratorConcept<_Tp>:
:__constraints() [with _Tp = WebCore::TimerHeapIterator]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:62: instantiated from 'void __gnu_cxx::__function_requires() [with _Concep
t = __gnu_cxx::_RandomAccessIteratorConcept<WebCore::TimerHeapIterator>]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:553: instantiated from 'void __gnu_cxx::_Mutable_RandomAccessIteratorConce
pt<_Tp>::__constraints() [with _Tp = WebCore::TimerHeapIterator]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:62: instantiated from 'void __gnu_cxx::__function_requires() [with _Concep
t = __gnu_cxx::_Mutable_RandomAccessIteratorConcept<WebCore::TimerHeapIterator>]
'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/stl_heap.h:162:
instantiated from 'void std::push_heap(_RAIter, _RAIter) [with _RAIter = WebCore
::TimerHeapIterator]'
platform\Timer.cpp:230: instantiated from here
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:267: error: no match for 'operator>' in '((__gnu_cxx::_ComparableConcept<Web
Core::TimerHeapIterator>*)this)->__gnu_cxx::_ComparableConcept<WebCore::TimerHea
pIterator>::__a > ((__gnu_cxx::_ComparableConcept<WebCore::TimerHeapIterator>*)t
his)->__gnu_cxx::_ComparableConcept<WebCore::TimerHeapIterator>::__b'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:268: error: no match for 'operator<=' in '((__gnu_cxx::_ComparableConcept<We
bCore::TimerHeapIterator>*)this)->__gnu_cxx::_ComparableConcept<WebCore::TimerHe
apIterator>::__a <= ((__gnu_cxx::_ComparableConcept<WebCore::TimerHeapIterator>*
)this)->__gnu_cxx::_ComparableConcept<WebCore::TimerHeapIterator>::__b'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:269: error: no match for 'operator>=' in '((__gnu_cxx::_ComparableConcept<We
bCore::TimerHeapIterator>*)this)->__gnu_cxx::_ComparableConcept<WebCore::TimerHe
apIterator>::__a >= ((__gnu_cxx::_ComparableConcept<WebCore::TimerHeapIterator>*
)this)->__gnu_cxx::_ComparableConcept<WebCore::TimerHeapIterator>::__b'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h: In member function 'void __gnu_cxx::_ForwardIteratorConcept<_Tp>::__constra
ints() [with _Tp = WebCore::TimerHeapIterator]':
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:62: instantiated from 'void __gnu_cxx::__function_requires() [with _Concep
t = __gnu_cxx::_ForwardIteratorConcept<WebCore::TimerHeapIterator>]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:502: instantiated from 'void __gnu_cxx::_BidirectionalIteratorConcept<_Tp>
::__constraints() [with _Tp = WebCore::TimerHeapIterator]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:62: instantiated from 'void __gnu_cxx::__function_requires() [with _Concep
t = __gnu_cxx::_BidirectionalIteratorConcept<WebCore::TimerHeapIterator>]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:528: instantiated from 'void __gnu_cxx::_RandomAccessIteratorConcept<_Tp>:
:__constraints() [with _Tp = WebCore::TimerHeapIterator]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:62: instantiated from 'void __gnu_cxx::__function_requires() [with _Concep
t = __gnu_cxx::_RandomAccessIteratorConcept<WebCore::TimerHeapIterator>]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:553: instantiated from 'void __gnu_cxx::_Mutable_RandomAccessIteratorConce
pt<_Tp>::__constraints() [with _Tp = WebCore::TimerHeapIterator]'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:62: instantiated from 'void __gnu_cxx::__function_requires() [with _Concep
t = __gnu_cxx::_Mutable_RandomAccessIteratorConcept<WebCore::TimerHeapIterator>]
'
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/stl_heap.h:162:
instantiated from 'void std::push_heap(_RAIter, _RAIter) [with _RAIter = WebCore
::TimerHeapIterator]'
platform\Timer.cpp:230: instantiated from here
c:\mingw\active\bin\../lib/gcc/mingw32/4.3.0/include/c++/bits/boost_concept_chec
k.h:483: error: invalid initialization of non-const reference of type 'WebCore::
TimerHeapElement&' from a temporary of type 'WebCore::TimerHeapElement'
mingw32-make[2]: *** [tmp/obj/debug_shared/Timer.o] Error 1
mingw32-make[2]: Leaving directory `Z:/qt-src/src/3rdparty/webkit/WebCore'
mingw32-make[1]: *** [debug-all] Error 2
mingw32-make[1]: Leaving directory `Z:/qt-src/src/3rdparty/webkit/WebCore'
mingw32-make: *** [sub-webkit-make_default-ordered] Error 2

[jpn]

Has someone managed to fix this error?
According to Thierry (http://labs.trolltech.com/blogs/2009/07/15/phonon-and-mingw-a-story-about-true-windows-love/), the upcoming Qt 4.6 will compile with GCC 4.4 on Windows. The blog post is mostly about Phonon support, but as he mentions he fixed other problems as well.

[piotr.dobrogost]

According to Thierry (http://labs.trolltech.com/blogs/2009/07/15/phonon-and-mingw-a-story-about-true-windows-love/), the upcoming Qt 4.6 will compile with GCC 4.4 on Windows. The blog post is mostly about Phonon support, but as he mentions he fixed other problems as well.

I don't really see where he mentions fixing other problems.

[jpn]

"And then, a few weeks ago, a new mingw was *finally* released based on gcc 4.4. That is truly great news for windows users. So I tested it and it works great. I had to fix some stuff but now Qt trunk (future 4.6) builds fine with it."

[piotr.dobrogost]

Actually I'm compiling with GCC 4.3.0 not with GCC 4.4.0 (sorry for this mistake) but that shouldn't matter here as the error is about initialization of non-const reference from a temporary and this AFAIK always has been and still is forbidden.