Original report at SourceForge, opened Sun Dec 19 08:36:15 2010

Running
$pip install matplotlib
end with a compilation error (see below).

This is with Python 2.6.5 and pip 0.7.2.

gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/freetype2 -I/usr/local/include -I/usr/include -I. -I/usr/include/python2.6 -c src/mplutils.cpp -o build/temp.linux-i686-2.6/src/mplutils.o

cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++

src/mplutils.cpp: In constructor ‘Printf::Printf(const char*, ...)’:

src/mplutils.cpp:17: error: ‘vsprintf’ was not declared in this scope

error: command 'gcc' failed with exit status 1

SourceForge Comments

On Thu Feb 3 18:29:46 2011, xguse wrote:

For others that run into this bug:
One work-around is to use subversion to do your install vs pip (http://matplotlib.sourceforge.net/faq/installing_faq.html#cleanly-rebuild-and-reinstall-everything)

To checkout the repo after making sure you have svn installed:
svn co https://matplotlib.svn.sourceforge.net/svnroot/matplotlib/trunk/matplotlib matplotlib

Install is your standard:
cd matplotlib
(sudo | su) python setup.py install

HOWEVER, you can also set it up to rebuild your install semi-automatically by using this install command instead:
cd matplotlib
(sudo | su) python setupegg.py develop

Then you only have to do the following (most of the time) to automatically update your mpl install from the svn repo dir (matplotlib):
svn update

For more specifics see the link at the top. I actually think that this is MORE favorable than pip.

On Thu Feb 3 18:08:05 2011, xguse wrote:

I also have this problem. I would LOVE to use pip to keep matplotlib up-to-date as ubuntu's repos are generally a release or so behind!

I am running Ubuntu 10.10 64bit and here are some more sys info:

gus@vlad 15:03:20 ~/src/pipInstalls:
gcc --version
gcc (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

gus@vlad 15:03:31 ~/src/pipInstalls:
uname -a
Linux vlad 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011 x86_64 GNU/Linux

On Mon Dec 20 09:31:03 2010, mdboom wrote:

What platform are you on? What version of gcc?