Sorry for my previous post. I'm afraid it's worthless ; I should have think twice. I'm trying to compile Trinity on a multilib Linux from scratch. I tried several times to compile arts, googled, looked into the archives of this mailing list. I had the idea to patch the Makefile in qtmcop. And it compiled. But the same problem arises with kdelibs and there is a lot of calls to 'moc', in a lot of makefiles. So I'm feeling a little stupid now and I'm wondering what to do. If someone can see where I'm going wrong... Details below: Trinity sources : http://ppa2.quickbuild.pearsoncomputing.net/redirect.php?file=releases/3.5.12/downloads.html KDE_PREFIX=/opt/trinity PATH=/usr/lib/pkgusr:/bin:/usr/bin:/usr/local/bin:/usr/X11R7/bin:/opt/jdk/bin:/opt/trinity/bin:/usr/share/ant/bin:/sbin:/usr/sbin:/tools/bin:/tools/sbin PKG_CONFIG_PATH32=/usr/lib/pkgconfig:/usr/share/pkgconfig:/usr/X11R7/share/pkgconfig:/usr/X11R7/lib/pkgconfig:/opt/trinity/lib/pkgconfig PKG_CONFIG_PATH64=/usr/lib64/pkgconfig:/usr/share/pkgconfig:/usr/X11R7/share/pkgconfig:/usr/X11R7/lib64/pkgconfig:/opt/trinity/lib64/pkgconfig XDG_DATA_DIRS=/usr/share:/opt/trinity/share XDG_CONFIG_DIRS=/etc/xdg:/usr/share:/etc/trinity/xdg:/etc/lxde/xdg cat > /etc/ld.so.conf.d/trinity.conf << "eof" # Begin KDE-Trinity addition to /etc/ld.so.conf /opt/trinity/lib /opt/trinity/lib64 # End KDE-Trinity addition eof TOP=$PWD cd $TOP/tqtinterface export PKG_CONFIG_PATH="${PKG_CONFIG_PATH32}" export AUTOCONF=autoconf-2.63 cp -vp /usr/share/aclocal/libtool.m4 admin/libtool.m4.in && cp -vp /usr/share/libtool/config/ltmain.sh admin/ltmain.sh && make -f admin/Makefile.common && CC="gcc -m32" CXX="g++ -m32" PKG_CONFIG_PATH="${PKG_CONFIG_PATH32}" \ WITH_QT3=ON BUILD_ALL=ON ./configure \ --with-gnu-ld \ --libdir=/opt/trinity/lib \ --prefix=/opt/trinity \ --includedir=/opt/trinity/include/kde \ --mandir=/opt/trinity/share/man \ --infodir=/opt/trinity/share/info \ --with-extra-libs=/opt/trinity/lib \ --sysconfdir=/etc \ --localstatedir=/var \ --libexecdir=/opt/trinity/lib/kdebase-kde3 \ --enable-closure \ --with-qt-dir=$QTDIR \ --with-qt-libraries=$QTDIR/lib && make -j 1 && make check && mkdir -vp /opt/trinity/include && make install cd $TOP/tqtinterface-64 export PKG_CONFIG_PATH="${PKG_CONFIG_PATH64}" export AUTOCONF=autoconf-2.63 cp -vp /usr/share/aclocal/libtool.m4 admin/libtool.m4.in && cp -vp /usr/share/libtool/config/ltmain.sh admin/ltmain.sh && make -f admin/Makefile.common && CC="gcc -m64" CXX="g++ -m64" PKG_CONFIG_PATH="${PKG_CONFIG_PATH64}" \ WITH_QT3=ON ./configure --with-gnu-ld \ --libdir=/opt/trinity/lib64 \ --enable-libsuffix=64 \ --prefix=/opt/trinity \ --includedir=/opt/trinity/include/kde \ --mandir=/opt/trinity/share/man \ --infodir=/opt/trinity/share/info \ --with-extra-libs=/opt/trinity/lib64 \ --sysconfdir=/etc \ --localstatedir=/var \ --libexecdir=/opt/trinity/lib/kdebase-kde3 \ --enable-closure \ --with-qt-dir=$QTDIR \ --with-qt-libraries=$QTDIR/lib64 && make -j 1 && make check && make install cd $TOP/arts cp -vp /usr/share/aclocal/libtool.m4 admin/libtool.m4.in && cp -vp /usr/share/libtool/config/ltmain.sh admin/ltmain.sh && make -f admin/Makefile.common && CC="gcc -m32" CXX="g++ -m32" PKG_CONFIG_PATH="${PKG_CONFIG_PATH32}" \ WITH_QT3=ON BUILD_ALL=ON MOCTQT=/opt/trinity/bin/moc-tqt \ ./configure \ --with-gnu-ld \ --libdir=/opt/trinity/lib \ --prefix=/opt/trinity \ --includedir=/opt/trinity/include/kde \ --mandir=/opt/trinity/share/man \ --infodir=/opt/trinity/share/info \ --with-extra-libs=/opt/trinity/lib \ --sysconfdir=/etc \ --localstatedir=/var \ --libexecdir=/opt/trinity/lib/kdebase-kde3 \ --enable-closure \ --with-qt-dir=$QTDIR \ --with-qt-libraries=$QTDIR/lib \ --with-jack --with-alsa \ --enable-final && make -j 1 ... And it fails here with: > Making all in qtmcop > make[2]: Entering directory `/usr/src/trinity/arts/qtmcop' > /usr/share/qt/bin/moc ./qiomanager_p.h qiomanager_p.moc > Qt meta object compiler > moc: Too many input files specified -- Laurent