Hi, I'm sorry, but I already have problems. I'm trying to compile Qt and this bug occur : linking ../../../bin/uic make[1]: quittant le répertoire « /usr/local/qt/qt/src/tools/uic » cd src/corelib/ && make -f Makefile make[1]: entrant dans le répertoire « /usr/local/qt/qt/src/corelib » moc animation/qabstractanimation.h compiling animation/qabstractanimation.cpp {standard input}: Assembler messages: {standard input}:96: Error: bad instruction `lock' {standard input}:97: Error: bad instruction `incl [r3,#0]' {standard input}:98: Error: bad instruction `setne [fp,#-5]' {standard input}:127: Error: bad instruction `lock' {standard input}:128: Error: bad instruction `decl [r3,#0]' {standard input}:129: Error: bad instruction `setne [fp,#-5]' In file included from ../../include/QtCore/qatomic_arch.h:64, from ../../include/QtCore/qbasicatomic.h:227, from ../../include/QtCore/qatomic.h:46, from ../../include/QtCore/qbytearray.h:45, from ../../include/QtCore/qstring.h:46, from ../../include/QtCore/qobject.h:48, from animation/qabstractanimation.h:45, from animation/qabstractanimation.cpp:145: ../../include/QtCore/qatomic_i386.h: In member function 'bool QBasicAtomicPointer<T>::testAndSetOrdered(T*, T*) [with T = QThreadStorage<QUnifiedTimer*>]': ../../include/QtCore/qatomic_i386.h:176: error: impossible constraint in 'asm' make[1]: *** [.obj/release-shared-emb-arm/qabstractanimation.o] Erreur 1 make[1]: quittant le répertoire « /usr/local/qt/qt/src/corelib » make: *** [sub-corelib] Erreur 2 Do you jave an idea ? I use Qt 4.6.3 and arm-linux-gcc 4.4.3. Thanks