Re: [matplotlib-devel] [PATCH] experimental numscons support in matplotlib

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I know it's been a while since you announced this, but I'm just looking 
into this now.  My primary interest is having a build script that 
selects the correct c++ compiler and get around a long-standing 
distutils bug.

I'm running into a little speed bump here.  It's failing on the 
pkg-config detection of gtk.  I have user-locally built and installed 
packages for gtk (and many other things), so I set my PKG_CONFIG_PATH to 
a custom location.  However, it appears that scons isn't passing this 
along to 'pkg-config'.  By poking into scons.Action._subproc, it looks 
like it is only passing a limited set of environment variables ("PATH", 
"LD_LIBRARY_PATH" and "HOME") to the pkg-config subprocess.  Is there an 
scons way to get it to use this environment variable?

Mike

 > python setupscons.py build
running build
running config_cc
unifing config_cc, config, build_clib, build_ext, build commands 
--compiler options
running config_fc
unifing config_fc, config, build_clib, build_ext, build commands 
--fcompiler options
running build_src
build_src
building extension "matplotlib" sources
build_src: building npy-pkg config files
running build_py
running build_ext
customize UnixCCompiler
customize UnixCCompiler using build_ext
running scons
customize UnixCCompiler
Found executable /usr/bin/gcc
customize GnuFCompiler
Found executable /usr/bin/g77
gnu: no Fortran 90 compiler found
gnu: no Fortran 90 compiler found
customize GnuFCompiler
gnu: no Fortran 90 compiler found
gnu: no Fortran 90 compiler found
Found executable /usr/bin/g77
customize UnixCCompiler
customize UnixCCompiler using scons
Found executable /usr/bin/g++
Executing scons command (pkg is matplotlib): /home/mdroe/usr/bin/python 
"/home/mdroe/usr/lib/python2.5/site-packages/numscons/scons-local/scons.py" 
-f SConstruct -I. scons_tool_path="" src_dir="" 
pkg_path="lib/matplotlib" pkg_name="matplotlib" log_level=50 
distutils_libdir="../../../build/lib.linux-i686-2.5" 
distutils_clibdir="../../../build/temp.linux-i686-2.5" 
distutils_install_prefix="/home/mdroe/usr/lib/python2.5/site-packages/matplotlib" 
cc_opt=gcc cc_opt_path="/usr/bin" debug=0 f77_opt=g77 
f77_opt_path="/usr/bin" cxx_opt=g++ cxx_opt_path="/usr/bin" 
include_bootstrap=/home/mdroe/usr/lib/python2.5/site-packages/numpy/core/include 
bypass=0 import_env=0 silent=0 bootstrapping=0
scons: Reading SConscript files ...
Mkdir("build/scons/matplotlib")
Checking for freetype2 ... Yes
Checking for png ... Yes
Package pygtk-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `pygtk-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'pygtk-2.0' found
OSError: 'pkg-config pygtk-2.0 gtk+-2.0 --cflags' exited 1:
  File "/wonkabar/data1/builds/matplotlib_scons/SConstruct", line 2:
    GetInitEnvironment(ARGUMENTS).DistutilsSConscript('SConscript')
  File 
"/home/mdroe/usr/lib/python2.5/site-packages/numscons/core/numpyenv.py", 
line 135:
    build_dir = '$build_dir', src_dir = '$src_dir')
  File 
"/wonkabar/data1/usr/lib/python2.5/site-packages/numscons/scons-local/scons-local-1.2.0/SCons/Script/SConscript.py", 
line 553:
    return apply(_SConscript, [self.fs,] + files, subst_kw)
  File 
"/wonkabar/data1/usr/lib/python2.5/site-packages/numscons/scons-local/scons-local-1.2.0/SCons/Script/SConscript.py", 
line 262:
    exec _file_ in call_stack[-1].globals
  File 
"/wonkabar/data1/builds/matplotlib_scons/build/scons/matplotlib/SConscript", 
line 271:
    if not config.CheckPyGTK():
  File 
"/wonkabar/data1/usr/lib/python2.5/site-packages/numscons/scons-local/scons-local-1.2.0/SCons/SConf.py", 
line 650:
    ret = apply(self.test, (context,) +  args, kw)
  File 
"/wonkabar/data1/builds/matplotlib_scons/build/scons/matplotlib/SConscript", 
line 132:
    pkg_config_cmd, autoadd=autoadd)
  File 
"/wonkabar/data1/builds/matplotlib_scons/build/scons/matplotlib/SConscript", 
line 249:
    return check_from_pkg_config(context, cmd_base, src, autoadd=autoadd)
  File 
"/wonkabar/data1/builds/matplotlib_scons/build/scons/matplotlib/SConscript", 
line 61:
    compile_info = context.env.ParseFlags([' '.join(cflags_cmd)])
  File 
"/wonkabar/data1/usr/lib/python2.5/site-packages/numscons/scons-local/scons-local-1.2.0/SCons/Environment.py", 
line 791:
    do_parse(arg, do_parse)
  File 
"/wonkabar/data1/usr/lib/python2.5/site-packages/numscons/scons-local/scons-local-1.2.0/SCons/Environment.py", 
line 672:
    for t in arg: me(t, me)
  File 
"/wonkabar/data1/usr/lib/python2.5/site-packages/numscons/scons-local/scons-local-1.2.0/SCons/Environment.py", 
line 677:
    arg = self.backtick(arg[1:])
  File 
"/wonkabar/data1/usr/lib/python2.5/site-packages/numscons/scons-local/scons-local-1.2.0/SCons/Environment.py", 
line 593:
    raise OSError("'%s' exited %d" % (command, status))
Checking for pygtk >= (2, 2, 0) ... error: Error while executing scons 
command. See above for more information.
If you think it is a problem in numscons, you can also try executing the 
scons
command with --log-level option for more detailed output of what numscons is
doing, for example --log-level=0; the lowest the level is, the more detailed
the output it.

David Cournapeau wrote:
> Hi,
>
>     I don't know if that's of any interest for matplotlib developers,
> but I added scripts to build matplotlib with numscons:
>
> http://github.com/cournape/matplotlib/tree/scons_build
>
> Not every configuration is supported yet, but I can successfully build
> matplotlib on Linux with gtk or wx backends. It only adds 3 files + one
> configuration example, and does not touch any other file.
>
> The advantage of numscons over distutils is automatic dependency
> handling (no need to rm -rf build to get accurate build), easy compiler
> flags customization, parallel build, etc... There are some instructions
> in setupscons.py.
>
> It is still experimental (I have not implemented check for QT, as well
> as windows, macosx and qt backends), but it seems to work well. I will
> add mac os x and windows backends soon (I started this to debug issues
> on 64 bits version of matplotlib),
>
> cheers,
>
> David
>
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-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA