Until the linked bug is resolved, USE=qt3 and USE=qt4 are mutually incompatible for Qt4 apps (KDE4, for most people). This may or may not depend on Qt4 being built with USE=qt3support (didn't test it; kdelibs requires qt3support currently). Reproducible: Always Steps to Reproduce: 1.`USE="qt3 qt4" emerge app-i18n/uim` 2.It compiles and installs cleanly with no ewarning. Portage 2.2_rc20 (default/linux/amd64/2008.0, gcc-4.1.2, glibc-2.9_p20081201-r0, 2.6.27-gentoo-r7 x86_64) ================================================================= System uname: Linux-2.6.27-gentoo-r7-x86_64-Intel-R-_Core-TM-2_Duo_CPU_E6850_@_3.00GHz-with-glibc2.2.5 Timestamp of tree: Sun, 01 Feb 2009 14:30:01 +0000 distcc 3.0 x86_64-pc-linux-gnu [disabled] ccache version 2.4 [enabled] app-shells/bash: 3.2_p39 dev-java/java-config: 1.3.7-r1, 2.1.6-r1 dev-lang/python: 2.4.4-r13, 2.5.2-r7 dev-python/pycrypto: 2.0.1-r6 dev-util/ccache: 2.4-r7 dev-util/cmake: 2.6.2-r1 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.63 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.27-r2 ACCEPT_KEYWORDS="amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/kde/live/env /usr/kde/live/share/config /usr/kde/live/shutdown /usr/share/config /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/udev/rules.d" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="ccache distlocks fixpackages parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unmerge-orphans userfetch" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LANG="en_US.utf8" LC_ALL="en_US.utf8" LDFLAGS="-Wl,-O1" LINGUAS="en ja" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/portage/local/layman/d /usr/portage/local/layman/pro-audio /usr/portage/local/layman/Spring /usr/portage/local/layman/jbrout /usr/portage/local/layman/kde-testing /usr/portage/local/layman/qting-edge /usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X aac acl acpi aim alsa amd64 anthy bash-completion berkdb branding bzip2 cairo ccache cddb cdinstall cdparanoia cdr cjk cli console cpudetection cracklibcrypt css cups d dbus dio divx divx4linux dmi dri dvd dvdnav dvdr dvdread enca encode erandom exif fat ffmpeg firefox fortran freewnn ftp fuse gdbm gif glitz gmedia gphoto2 gpm gstreamer hal hddtemp hfs high-ints highlight history hpn iconv ieee1394 imagemagick imlib immqt inherit-graph inkjar ipod ipv6 isdnlog jabberjack java javascript jingle joystick jpeg jpeg2k kde kdeenablefinal kdeprefix kdrive ladspa lame lm_sensors logrotate matroska maya-shaderlibrary midi mikmod mime mmap mmx mmx2 mmxext mng mp3 mpeg msql mtp mudflap multilib musepack musicbrainz ncurses nls nocd nptl nptlonly nsplugin nxclient offensive ogg openal opengl openmp oscar pam pcre pdf perl pertty png posix postgres pppd python qt qt4 readline samba sasl sdl semantic-desktop server session sharedmem simplexml smp sndfile soap sockets spell spl sqlite sqlite3 sse sse2 ssl ssse3 svg sysfs tcpd theora threads tiff timidity truetype unicode usb vcd verbose videos vorbis wifi wmf wmp wxwindows x264 xcomposite xine xinerama xml xorg xpm xprint xv xvid yahoozlib" ALSA_CARDS="intel8x0m" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dsharedsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actionsalias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en ja" USERLAND="GNU" VIDEO_CARDS="nvidia tdfx voodoo vesa" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Created attachment 203573 [details] output of gdb when USE=qt3 and USE=qt4 USE=qt3 and USE=qt4 cause a segmentation fault on Qt4 applications. The attached file is an output of gdb with qtconfig, which is in x11-libs/qt-qt3support. The backtrace (#14) in the output above indicates this is a problem of libuim.so.6.
Created attachment 204328 [details, diff] patch to avoid crashes The attachment prevents Qt4 applications from crashing by disabling knotify3 when both Qt3 and Qt4 support are enabled. This bug may be a side effect of uim-1.5.4-gentoo.patch.
Created attachment 204407 [details, diff] patch for uim-1.5.6-r2.ebuild This bug was fixed in the upstream repository. Don't enable knotify3 when qt4-immodule is enabled http://code.google.com/p/uim/source/detail?r=6000 This attachment does a similar thing as the commit above.
1.5.6-r3 in cvs now. thanks.
