Maybe apt cannot resolve foreign architecture dependencies correctly? I followed the dependency chains manually and installed the dependencies 'backwards' and got the program working. I'm still left with very odd compiler include path differences between 10.04.3 LTS and 12.04.1 LTS, but that may be unrelated.
This is the dependency chain I followed: # unmet dependency, not installing sudo apt-get install ia32-libs ia32-libs : Depends: ia32-libs-multiarch # unmet dependency, not installing sudo apt-get install ia32-libs-multiarch ia32-libs-multiarch:i386 : Depends: libgphoto2-2:i386 but it is not going to be installed Depends: libsane:i386 but it is not going to be installed # unmet dependency, not installing sudo apt-get install libsane:i386 libsane:i386 : Depends: libgphoto2-2:i386 (>= 2.4.10.1) but it is not going to be installed # unmet dependency sudo apt-get install libgphoto2-2:i386 libgphoto2-2:i386 : Depends: libgd2-xpm:i386 (>= 2.0.36~rc1~dfsg) but it is not going to be installed # successfully installs, but removes libgd2-noxmp, brings some packages sudo apt-get install libgd2-xpm:i386 gcc-4.6-base:i386 libc6:i386 libexpat1:i386 libfontconfig1:i386 libfreetype6:i386 libgcc1:i386 libgd2-xpm libgd2-xpm:i386 libjpeg-turbo8:i386 libjpeg8:i386 libpng12-0:i386 libx11-6:i386 libxau6:i386 libxcb1:i386 libxdmcp6:i386 libxpm4:i386 zlib1g:i386 dpkg: libgd2-noxpm: dependency problems, but removing anyway as you requested: libgvc5 depends on libgd2-noxpm (>= 2.0.36~rc1~dfsg) | libgd2-xpm (>= 2.0.36~rc1~dfsg); however: Package libgd2-noxpm is to be removed. Package libgd2-xpm is not installed. gnuplot-x11 depends on libgd2-noxpm (>= 2.0.36~rc1~dfsg) | libgd2-xpm (>= 2.0.36~rc1~dfsg); however: Package libgd2-noxpm is to be removed. Package libgd2-xpm is not installed. gnuplot-nox depends on libgd2-noxpm (>= 2.0.36~rc1~dfsg) | libgd2-xpm (>= 2.0.36~rc1~dfsg); however: Package libgd2-noxpm is to be removed. Package libgd2-xpm is not installed. # successfully installs sudo apt-get install libgphoto2-2:i386 # successfully installs, brigs a couple of other packages too sudo apt-get install libsane:i386 acl libavahi-client3:i386 libavahi-common-data:i386 libavahi-common3:i386 libdbus-1-3:i386 libieee1284-3:i386 libsane:i386 libsane-common libtiff4:i386 libv4l-0:i386 libv4lconvert0:i386 # successfully installs, brigs tons of other packages sudo apt-get install ia32-libs-multiarch bluez bluez-alsa:i386 consolekit esound-common gconf-service gconf-service-backend gconf2 gconf2-common glib-networking glib-networking:i386 glib-networking-common glib-networking-services gstreamer0.10-plugins-base:i386 gstreamer0.10-plugins-good:i386 gstreamer0.10-x:i386 gtk2-engines:i386 gtk2-engines-murrine:i386 gtk2-engines-oxygen:i386 gtk2-engines-pixbuf:i386 gvfs gvfs:i386 gvfs-common gvfs-daemons gvfs-libs gvfs-libs:i386 ia32-libs-multiarch:i386 ibus-gtk:i386 libaa1:i386 libacl1:i386 libaio1:i386 libao-common libao4:i386 libasn1-8-heimdal:i386 libasound2:i386 libasound2-plugins:i386 libasyncns0:i386 libatasmart4 libatk1.0-0:i386 libattr1:i386 libaudio2:i386 libaudiofile1:i386 libavc1394-0:i386 libbz2-1.0:i386 libcaca0:i386 libcairo-gobject2:i386 libcairo2:i386 libcanberra-gtk-module:i386 libcanberra-gtk0:i386 libcanberra0:i386 libcap2:i386 libcapi20-3:i386 libcdparanoia0:i386 libck-connector0 libcomerr2:i386 libcroco3:i386 libcups2:i386 libcupsimage2:i386 libcurl3:i386 libdatrie1:i386 libdb5.1:i386 libdbus-glib-1-2:i386 libdevmapper-event1.02.1 libdrm-intel1:i386 libdrm-nouveau1a:i386 libdrm-radeon1:i386 libdrm2:i386 libdv4:i386 libesd0:i386 libffi6:i386 libflac8:i386 libgail-common:i386 libgail18:i386 libgconf-2-4 libgconf-2-4:i386 libgcrypt11:i386 libgdbm3:i386 libgdk-pixbuf2.0-0:i386 libgdu0 libgettextpo0:i386 libgl1-mesa-dri:i386 libgl1-mesa-glx:i386 libglapi-mesa:i386 libglib2.0-0:i386 libglib2.0-data libglu1-mesa:i386 libgnome-keyring-common libgnome-keyring0 libgnome-keyring0:i386 libgnutls26:i386 libgomp1:i386 libgpg-error0:i386 libgpm2:i386 libgssapi-krb5-2:i386 libgssapi3-heimdal:i386 libgstreamer-plugins-base0.10-0:i386 libgstreamer0.10-0:i386 libgtk2.0-0:i386 libgudev-1.0-0 libgudev-1.0-0:i386 libhcrypto4-heimdal:i386 libheimbase1-heimdal:i386 libheimntlm0-heimdal:i386 libhx509-5-heimdal:i386 libibus-1.0-0:i386 libice6:i386 libidn11:i386 libiec61883-0:i386 libjack-jackd2-0:i386 libjasper1:i386 libjson0:i386 libk5crypto3:i386 libkeyutils1:i386 libkrb5-26-heimdal:i386 libkrb5-3:i386 libkrb5support0:i386 liblcms1:i386 libldap-2.4-2:i386 libllvm3.0:i386 liblvm2app2.2 libmad0:i386 libmikmod2:i386 libmng1:i386 libmpg123-0:i386 libmysqlclient18:i386 libncurses5:i386 libncursesw5:i386 libnspr4:i386 libnss3:i386 libodbc1:i386 libogg0:i386 libopenal-data libopenal1:i386 liborc-0.4-0:i386 libp11-kit0:i386 libpam-ck-connector libpango1.0-0:i386 libpciaccess0:i386 libpcre3:i386 libpixman-1-0:i386 libpolkit-agent-1-0 libpolkit-backend-1-0 libproxy1 libproxy1:i386 libpulse-mainloop-glib0:i386 libpulse0:i386 libpulsedsp:i386 libqt4-dbus libqt4-dbus:i386 libqt4-declarative:i386 libqt4-designer:i386 libqt4-network:i386 libqt4-opengl:i386 libqt4-qt3support:i386 libqt4-script:i386 libqt4-scripttools:i386 libqt4-sql:i386 libqt4-sql-mysql:i386 libqt4-svg:i386 libqt4-test:i386 libqt4-xml libqt4-xml:i386 libqt4-xmlpatterns:i386 libqtcore4 libqtcore4:i386 libqtgui4:i386 libqtwebkit4:i386 libraw1394-11:i386 libroken18-heimdal:i386 librsvg2-2:i386 librsvg2-common:i386 librtmp0:i386 libsamplerate0:i386 libsasl2-2:i386 libsasl2-modules:i386 libsdl-image1.2:i386 libsdl-mixer1.2:i386 libsdl-net1.2:i386 libsdl-ttf2.0-0:i386 libsdl1.2debian:i386 libselinux1:i386 libsgutils2-2 libshout3:i386 libslang2:i386 libsm6:i386 libsndfile1:i386 libsoup-gnome2.4-1:i386 libsoup2.4-1:i386 libspeex1:i386 libspeexdsp1:i386 libsqlite3-0:i386 libssl0.9.8:i386 libssl1.0.0:i386 libstdc++5:i386 libstdc++6:i386 libtag1-vanilla:i386 libtag1c2a:i386 libtasn1-3:i386 libtdb1:i386 libthai0:i386 libtheora0:i386 libtinfo5:i386 libudev0:i386 libunistring0:i386 libuuid1:i386 libvisual-0.4-0:i386 libvisual-0.4-plugins:i386 libvorbis0a:i386 libvorbisenc2:i386 libvorbisfile3:i386 libwavpack1:i386 libwind0-heimdal:i386 libwrap0:i386 libx11-xcb1:i386 libxaw7:i386 libxcb-glx0:i386 libxcb-render0:i386 libxcb-shm0:i386 libxcomposite1:i386 libxcursor1:i386 libxdamage1:i386 libxext6:i386 libxfixes3:i386 libxft2:i386 libxi6:i386 libxinerama1:i386 libxml2:i386 libxmu6:i386 libxp6:i386 libxrandr2:i386 libxrender1:i386 libxslt1.1:i386 libxss1:i386 libxt6:i386 libxtst6:i386 libxv1:i386 libxxf86vm1:i386 mtools mysql-common odbcinst odbcinst1debian2 odbcinst1debian2:i386 oss-compat policykit-1 policykit-1-gnome qdbus sound-theme-freedesktop udisks xaw3dg:i386 # The 32-bit application now works!! $ ppc_82xx-gcc ppc_82xx-gcc: no input files -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1016294 Title: ia32-libs-multiarch but it is not installable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ia32-libs/+bug/1016294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs