I've been unhappy with the default Ubuntu build of firefox for a long time. I thought I'd try building it from source but it's apparently been a long time since untar; ./configure; make; make install was a thing. With one of the recent updates, the window decorations changed, too, and I find the new style dialogs annoying (I have no idea if it was a Firefox patch or a TDE patch that changed something). I also get Asian characters, perhaps Chinese, when I copy something from the TDE side of my environment across Synergy and paste it to my Macbook, but ignore that foolishness for now. So I've installed mercurial and I've installed autoconf-2.13 (because past that, autoconf is too cool for school and isn't actually backwards compatible with stuff real projects used) and now I've hit gtk+. plaws@toto3:mozilla-central $ sudo apt-get install gtk+ Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package gtk Any combination of quotes doesn't seem to sufficiently protect that +. Looking at what's available in the repo with Adept, I don't actually see a specific package for gtk+ only gtk2 and gtk3, though I admit that I have no idea how those are related (look, if it were up to me, I'd still use OLVWM ...). So what's the 1) easiest way for me to satisfy the demands of the build script that 2) doesn't completely dork up my Trinity installation? I may not need to install anything - this may be just a path or ENV thing. Any help appreciated! 0:07.85 checking for gtk+-3.0 >= 3.4.0 gtk+-unix-print-3.0 glib-2.0 gobject-2.0 ... Package gtk+-3.0 was not found in the pkg-config search path. Perhaps you should add the directory containing `gtk+-3.0.pc' to the PKG_CONFIG_PATH environment variable No package 'gtk+-3.0' found Package gtk+-unix-print-3.0 was not found in the pkg-config search path. Perhaps you should add the directory containing `gtk+-unix-print-3.0.pc' to the PKG_CONFIG_PATH environment variable No package 'gtk+-unix-print-3.0' found Package glib-2.0 was not found in the pkg-config search path. Perhaps you should add the directory containing `glib-2.0.pc' to the PKG_CONFIG_PATH environment variable No package 'glib-2.0' found Package gobject-2.0 was not found in the pkg-config search path. Perhaps you should add the directory containing `gobject-2.0.pc' to the PKG_CONFIG_PATH environment variable No package 'gobject-2.0' found 0:07.85 configure: error: Library requirements (gtk+-3.0 >= 3.4.0 gtk+-unix-print-3.0 glib-2.0 gobject-2.0 ) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them. plaws@toto3:mozilla-central $ cat /etc/*release* DISTRIB_ID=Ubuntu DISTRIB_RELEASE=14.04 DISTRIB_CODENAME=trusty DISTRIB_DESCRIPTION="Ubuntu 14.04.4 LTS" NAME="Ubuntu" VERSION="14.04.4 LTS, Trusty Tahr" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 14.04.4 LTS" VERSION_ID="14.04" HOME_URL="http://www.ubuntu.com/" SUPPORT_URL="http://help.ubuntu.com/" BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/" ii tdm-trinity 4:14.0.4~pre6-0ubuntu14.04.0+0 amd64 X display manager for TDE Linux toto3 3.13.0-86-generic #130-Ubuntu SMP Mon Apr 18 18:27:15 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux -- Peter Laws BS, MRCP / N5UWY National Weather Center / Network Operations Center University of Oklahoma Information Technology plaws(a)ou.edu