GStreamer FAQ (0.10.12)
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Building GStreamer from CVS

Q: How do I check out GStreamer from CVS ?
Q: How do I get developer access to GStreamer CVS ?
Q: I ran autogen.sh, but it fails with aclocal errors. What's wrong ?
Q: Why is "-Wall -Werror" being used ?

Q: How do I check out GStreamer from CVS ?

A: 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@anoncvs.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.

The modules page has a list of active ones together with a short description.

Q: How do I get developer access to GStreamer CVS ?

A: 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:

  1. your desired unix username

  2. your full name

  3. your e-mail address

  4. 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

  5. your GPG fingerprint. This would allow you to add and remove ssh keys to your account.

Once you have all these items, see http://freedesktop.org/wiki/AccountRequests for what to do with them.

Q: I ran autogen.sh, but it fails with aclocal errors. What's wrong ?


+ 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 ?

A: 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 :

  1. install automake in the same prefix as libtool

  2. force use of the automake installed in the same prefix as libtool by using the --with-automake option

  3. 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.

Q: Why is "-Wall -Werror" being used ?

A: "-Wall" is being used because it finds a lot of possible problems with code. Not all of them are necessarily a problem, but it's better to have the compiler report some false positives and find a work-around than to spend time chasing a bug for days that the compiler was giving you hints about.

"-Werror" is turned off for actual releases. It's turned on by default for CVS and prereleases so that people actually notice and fix problems found by "-Wall". We want people to actively hit and report or fix them.

If for any reason you want to bypass these flags and you are certain it's the right thing to do, you can run 

make ERROR_CFLAGS=""
to clear the CFLAGS for error checking.

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