Hello,

I'm tring to build qt4pas-V2.4_Qt4.5.3 on a Macbook Pro / Mac Os 10.7.2 / Xcode 4.1 / gcc 4.2. I've launched qmake which resulted in a Makefile, then make, and the build fails with this error message :

make
g++ -c -pipe -mstackrealign -O2 -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -w -fPIC -DDARWIN -DQT_NO_DEBUG -DQT_WEBKIT_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I../../../QtSDK/Desktop/Qt/473/gcc/mkspecs/default -I. -I../../../QtSDK/Desktop/Qt/473/gcc/lib/QtCore.framework/Versions/4/Headers -I../../../QtSDK/Desktop/Qt/473/gcc/include/QtCore -I../../../QtSDK/Desktop/Qt/473/gcc/lib/QtNetwork.framework/Versions/4/Headers -I../../../QtSDK/Desktop/Qt/473/gcc/include/QtNetwork -I../../../QtSDK/Desktop/Qt/473/gcc/lib/QtGui.framework/Versions/4/Headers -I../../../QtSDK/Desktop/Qt/473/gcc/include/QtGui -I../../../QtSDK/Desktop/Qt/473/gcc/lib/QtWebKit.framework/Versions/4/Headers -I../../../QtSDK/Desktop/Qt/473/gcc/include/QtWebKit -I../../../QtSDK/Desktop/Qt/473/gcc/include -Itmp -F/Users/laurent/QtSDK/Desktop/Qt/473/gcc/lib -o tmp/qt4pas.o src/qt4pas.cpp src/qt4pas.cpp:1: error: -mstackrealign not supported in the 64bit mode make: *** [tmp/qt4pas.o] Error 1

Any one can help me, please ? The goal is to use Lazarus 0.9.30.2RC1 with qt widgets.

Thank you

Just a quick-and-dirty fix so you can continue: Remove the "-mstackrealign" lines in qt4pas.pro, so the GCC parameter is not added.
But for more detailed info and a better fix, you should ask Jan :) (Maybe there is just an ifelse for MacOS missing)

2011/10/7 Laurent Rathle :

Laurent Rathle wrote

src/qt4pas.cpp:1: error: -mstackrealign not supported in the 64bit mode

If i recall well, -mstackrealign was supported in 64bit mode Linux, apparently not on OsX. Just remove that option in Qt4Pas.pro

so remove or comment out the following line in Qt4Pas.pro QMAKE_CXXFLAGS += -mstackrealign

and rerun
QMAKESPEC=macx-g++ qmake
make
...

I can only hope Qt 4.7.3 on OsX 64bit does not require -mstackrealign :-)

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hm..I think he'll run into crashes (with all TQtCustomControls) without - mstackrealign.

zeljko

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zeljko wrote

hm..I think he'll run into crashes (with all TQtCustomControls) without -mstackrealign.

If the compiler does not support it and Qt is compiled with the same compilr ... there cannot be a problem. There is only a problem if Qt uses mstackrealign and the client program that uses the Qt dll does not.
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Build went fine with your instructions. Thank you.

Le 8 oct. 2011 ? 09:05, Den Jean a ?crit :

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Matthias Klumpp wrote

But for more detailed info and a better fix, you should ask Jan :) (Maybe there is just an ifelse for MacOS missing

Whether -mstackrealign is required (to avoid a certain crash) depends on whether Qt is compiled with sse. However not every version of gcc supports this option. Furthermore this option is x86 cpu specific (not arm). So there already is some *if then else* in the qmake project file to deal with this. Only the platforms other than OsX also require this option on 64 bit, so I thought OsX was not different (i do not have a 64 bit Osx).

Can someone confirm me that on all 64 bit OsX platforms and with all or with which Xcode version, -mstackrealign is available or not.

regards,

Den Jean