How do I check out GStreamer from CVS ? GStreamer is hosted on Freedesktop.org. GStreamer consists of various parts. In the beginning, you will be interested in the "gstreamer" module, containing the core, and "gst-plugins", containing the basic set of plugins. To check out the HEAD version of the core, use cvs -d:pserver:anoncvs@cvs.freedesktop.org:/cvs/gstreamer co gstreamer This will create a directory "gstreamer" in your current directory. If you want to get another module, replace the last "gstreamer" with the name of the module. How do I get developer access to GStreamer CVS ? If you want to gain developer access to GStreamer CVS, you should ask for it on the development lists, or ask one of the maintainers directly. If you are not already a registered developer with a user account on Freedesktop.org, You will then have to provide them with: your desired unix username your full name your e-mail address a copy of your public sshv2 identity. If you do not have this yet, you can generate it by running "ssh-keygen -t dsa". The resulting public key will be in .ssh/id_dsa.pub (optionally) your GPG fingerprint. This would allow you to add and remove ssh keys to your account. MAKE SURE you ATTACH these files to your mail, not paste them, because then the output is useless. I ran autogen.sh, but it fails with something like this: + running aclocal -I m4 -I common/m4 ... aclocal: configure.ac: 8: macro `AM_DISABLE_STATIC' not found in library aclocal: configure.ac: 17: macro `AM_PROG_LIBTOOL' not found in library aclocal failed What's wrong ? aclocal is unable to find two macros installed by libtool in a file called libtool.m4. Normally this would indicate that you don't have libtool, but that would mean autogen.sh would have failed on not finding libtool. It is more likely that you installed automake (which provides aclocal) in a different prefix than libtool. You can check this by examining in what prefix both aclocal and libtool are installed. You can do three things to fix this : install automake in the same prefix as libtool force use of the automake installed in the same prefix as libtool by using the --with-automake option figure out what prefix libtool has been installed to and point aclocal to the right location by running export ACLOCAL_FLAGS="-I $(prefix)/share/aclocal" where you replace prefix with the prefix where libtool was installed.