Rebuilding Android Qt with Linaro GCC 4.6.2.

Sat Dec 10 01:31:02 UTC 2011

By the way I think you should sign up for a raspberry pi with nokia. Not
got a link to hand but google it!
On Dec 10, 2011 1:28 AM, "mingw android" <mingw.android at gmail.com> wrote:

> Wow, you fixed it at such a low level. Excellent. I just looked into it a
> little bit and thought that the problem was that moc doesnt handle macro
> expansion so we were a bit buggered, but wow, your fix looks general enough!
>
> Ill give things a good test over the weekend. When do you hope to get the
> release ready by?
>
> Btw, I've been working with the mer team on upgrading their compilers to
> linaro 4.6.2 and carsten munk is testing it, so I think this is great as it
> will give me some more confidence in their stability if the testing gives
> good results.
> On Dec 9, 2011 9:31 PM, "BogDan" <bog_dan_ro at yahoo.com> wrote:
>
>> Hey,
>>
>> Fixed :
>> http://commits.kde.org/android-qt/b28ef4d8223c46cd3cb6e0f39ccd5adc958eece7
>>
>>  Cheers,
>> BogDan.
>>
>>   ------------------------------
>> *From:* mingw android <mingw.android at gmail.com>
>> *To:* necessitas-devel at kde.org
>> *Sent:* Tuesday, December 6, 2011 3:01 PM
>> *Subject:* Rebuilding Android Qt with Linaro GCC 4.6.2.
>>
>> Hi guys,
>>
>> I sent this email to BogDan, but really, this list is a more
>> appropriate place for it (and Gmail and Yahoo don't like talking to
>> each other sometimes, so I don't think he's getting my emails
>> delivered promptly).
>>
>> Sorry this is a bit long-winded! I managed to track down (on Linux)why
>> Qt Android doesn't build correctly with Linaro GCC 4.6.2 finally (btw
>> I released to the ndk mailing list the newest versions with
>> important neon fixes)... It's important that I get the 4.6.2 build
>> working and tested as neon will probably never work properly in 4.4.3,
>> plus 4.6.2 brings all sorts of other niceness (Cloog/Graphite + auto
>> parallelism).
>>
>> On Ubuntu Linux GCC 4.6.1 Host Qt build works, here's a snippet of the
>> commands:
>> pushd /usr/nec/shared-build/src/corelib
>> rm .moc/release-shared/moc_qabstractanimation.cpp
>> make
>>
>> ...executes...
>>
>> /usr/nec/shared-build/bin/moc -DQT_SHARED -DQT_BUILD_CORE_LIB
>> -DQT_NO_USING_NAMESPACE -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS
>> -DQT_MOC_COMPAT -DQT_USE_FAST_OPERATOR_PLUS
>> -DQT_USE_FAST_CONCATENATION -DELF_INTERPRETER=\"/lib/ld-linux.so.2\"
>> -DQLIBRARYINFO_EPOCROOT -DHB_EXPORT=Q_CORE_EXPORT -DQT_NO_DEBUG
>> -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT
>> -DQT_HAVE_SSE2 -DQT_HAVE_SSE3 -DQT_HAVE_SSSE3 -DQT_HAVE_SSE4_1
>> -DQT_HAVE_SSE4_2 -DQT_HAVE_AVX -D_LARGEFILE64_SOURCE
>> -D_LARGEFILE_SOURCE -I/usr/nec/qt-src/mkspecs/linux-g++
>> -I/usr/nec/qt-src/src/corelib -I../../include -I../../include/QtCore
>> -I.rcc/release-shared -Iglobal -I/usr/nec/qt-src/tools/shared
>> -I/usr/nec/qt-src/src/3rdparty/harfbuzz/src
>> -I/usr/nec/qt-src/src/3rdparty/md5 -I/usr/nec/qt-src/src/3rdparty/md4
>> -I.moc/release-shared -I.
>> /usr/nec/qt-src/src/corelib/animation/qabstractanimation.h -o
>> .moc/release-shared/moc_qabstractanimation.cpp
>>
>>
>>
>> Android Linaro 4.6.2 Qt build fails:
>> pushd /usr/nec/unstable/Android/Qt/480/build-armeabi/src/corelib
>> rm .moc/release-shared/moc_qabstractanimation.cpp
>> make
>>
>> ...executes...
>>
>> /usr/nec/unstable/Android/Qt/480/build-armeabi/bin/moc -DQT_SHARED
>> -DQT_NO_CORESERVICES -DQT_BUILD_CORE_LIB -DQT_NO_USING_NAMESPACE
>> -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT
>> -DQT_USE_QSTRINGBUILDER -DQLIBRARYINFO_EPOCROOT
>> -DHB_EXPORT=Q_CORE_EXPORT -DQT_NO_DEBUG
>> -I/usr/nec/unstable/Android/Qt/480/qt-src/mkspecs/android-g++
>> -I/usr/nec/unstable/Android/Qt/480/qt-src/src/corelib -I../../include
>> -I../../include/QtCore -I.rcc/release-shared -Iglobal
>> -I/usr/nec/unstable/Android/Qt/480/qt-src/tools/shared
>> -I/usr/nec/unstable/Android/Qt/480/qt-src/src/3rdparty/harfbuzz/src
>> -I/usr/nec/unstable/Android/Qt/480/qt-src/src/3rdparty/md5
>> -I/usr/nec/unstable/Android/Qt/480/qt-src/src/3rdparty/md4
>> -I.moc/release-shared
>>
>> -I/usr/nec/unstable/Android/Qt/480/build-armeabi/src/corelib/.rcc/release-shared
>> -I/usr/nec/android-ndk-r6b/platforms/android-5/arch-arm/usr/include
>> -I/usr/nec/android-ndk-r6b/sources/cxx-stl-4.6.2/gnu-libstdc++/include
>>
>> -I/usr/nec/android-ndk-r6b/sources/cxx-stl-4.6.2/gnu-libstdc++/libs/armeabi/include
>> -I.
>> /usr/nec/unstable/Android/Qt/480/qt-src/src/corelib/animation/qabstractanimation.h
>> -o .moc/release-shared/moc_qabstractanimation.cpp
>> ...and fails...
>>
>> usr/nec/android-ndk-r6b/sources/cxx-stl-4.6.2/gnu-libstdc++/include/bits/stl_relops.:68:
>> Parse error at "std"
>> make: *** [.moc/release-shared/moc_qabstractanimation.cpp] Error 1
>>
>> ...I examined the moc command lines in detail and the difference is
>> that we explicitly add the gnulibstdc++ includes path(s):
>> "-I/usr/nec/android-ndk-r6b/sources/cxx-stl-4.6.2/gnu-libstdc++/include
>>
>> -I/usr/nec/android-ndk-r6b/sources/cxx-stl-4.6.2/gnu-libstdc++/libs/armeabi/include"
>>
>> So I tested adding the equivalent (-I/usr/include/c++/4.6.1) to Ubuntu:
>> /usr/nec/shared-build/bin/moc -I/usr/include/c++/4.6.1 ...etc...
>> etc... /usr/nec/qt-src/src/corelib/animation/qabstractanimation.h -o
>> .moc/release-shared/moc_qabstractanimation.cpp
>> and it fails in much the same way:
>> usr/include/c++/4.6/bits/stringfwd.:43: Parse error at "std"
>>
>> Which is good as it identifies that this is the problem. Moc can't
>> handle very recent libstdc++ headers (because it doesn't do macro
>> expansion).
>>
>> For us, the problem obviously because in qmake.conf we've got:
>> ANDROID_SOURCES_CXX_STL_INCDIR =
>> $$NDK_ROOT/sources/cxx-stl-$$ANDROID_CXXSTL_SUFFIX/gnu-libstdc++/include
>> $$ANDROID_SOURCES_CXX_STL_LIBDIR/include
>> QMAKE_INCDIR            = $$ANDROID_PLATFORM_PATH/include
>> $$ANDROID_SOURCES_CXX_STL_INCDIR
>>
>> So I guess we need to not add this when mocc'ing, but I'm not sure how
>> best to achieve this.
>>
>> I guess we could have QMAKE_INCDIR_MOC which doesn't get these things
>> added or something like that? If anyone's got any thoughts then please
>> shout.
>>
>> Cheers,
>>
>> Ray.
>> _______________________________________________
>> Necessitas-devel mailing list
>> Necessitas-devel at kde.org
>> https://mail.kde.org/mailman/listinfo/necessitas-devel
>>
>>
>>
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