How do I generate a new graph from the output of gt.subgraph_isomorphism(S,G) which has all vertices and edges of F but no more (i.e. how do I define F as a graph which will possibly give gt.isomorphism(F,S) == True when this is the case).

Or should I be able to check the number of edges in the filtered version of G as per my method 1? How?

On 3 January 2013 11:42, Tiago Peixoto [via Main discussion list for the graph-tool project] <[hidden email]> wrote:

Hi there,

It seems the configure script cannot find some libraries:

c:/users/jelle.veraa/dropbox/ke-works-jelleveraa/random/mingw/bin/../lib/gcc/mingw32/4.7.2/../../../../mingw32/bin/ld.exe:
cannot find -lbz2
c:/users/jelle.veraa/dropbox/ke-works-jelleveraa/random/mingw/bin/../lib/gcc/mingw32/4.7.2/../../../../mingw32/bin/ld.exe:
cannot find -lexpat

and it screws up finding extra link flags for python:

configure:17030: checking python extra linking flags
configure:17037: result: None
configure:17044: checking consistency of all components of python
development environment
configure:17070: gcc -o conftest.exe -g -O2 -Ic:\Python27\include
conftest.c -lm -Lc:\Python27\Lib\config -lpython27 None >&5
gcc.exe: error: None: No such file or directory

Make sure all the necessary libraries are installed in the correct
path. For the last bug, the check is done in m4/ax_python_devel.m4:

if test -z "$PYTHON_EXTRA_LDFLAGS"; then
PYTHON_EXTRA_LDFLAGS=`$PYTHON -c "import
distutils.sysconfig; \
conf = distutils.sysconfig.get_config_var; \
print (conf('LINKFORSHARED'))"`
fi

For some reason, it is printing 'None', instead of an empty string. This
could be changed to something like,

if test -z "$PYTHON_EXTRA_LDFLAGS"; then
PYTHON_EXTRA_LDFLAGS=`$PYTHON -c "import
distutils.sysconfig; \
conf = distutils.sysconfig.get_config_var; \
x = conf('LINKFORSHARED'); \
x = x if x is not None else ''; \
print (x)"`
fi

But this is unlikely to fix the problem, since I think it is very
strange that this value points to None in the first place.

It would be nice to have graph-tool working on windows, but it is a very
weird platform, and I do not have access to a windows machine to
understand all its idiosyncrasies.

Cheers,
Tiago

On 01/02/2013 02:27 PM, Jelle Veraa wrote:

> Dear all,
>
> Happy new year!
>
> Starting of with what I'd actually like to do (building the program is
> of course a means to an end :) - I'd like to use the library for its
> subgraph isomorphism algorithm specifically - should you be able to
> provide me a binary of the library or know of another fast
> implementation for subgraph isomorphism that might help me as well.
>
> I'm trying to install the library on a 64 bit Windows 7 machine running
> 32 bit python 2.7.
> Installing the dependencies (from binaries) works, but running ./config
> from MinGW/MSys gives me an error. it exits with "Could not link test
> program to Python. Maybe the main Python library has been installed in
> some non-standard library path. If so, pass it to configure, via the
> LDFLAGS environment variable.", but the solution seems less
> straightforward - I've already tried all kinds of LDFLAGS versions
> pointing towards my Python folder (at C:\Python27, or /c/Python27 in
> MinGW).
>
> here is the log:
> http://bpaste.net/show/82ASZHcSnWmGsBIglFEo/
>
> From line 2055/configure:16996 things start going wrong (a bit is posted
> below). There is a reference to Lib\config, but the config directory
> does not exist. Furthermore the output 'None' at configure:17037 is
> injected into the command line for gcc.exe which also gives an error.
>
> I've been googling for an answer for some hours now bu no luck. I see
> that you need python-dev on linux for instance, but I've got Windows so
> 'apt-get python-dev' won't work :)
>
> Can anyone help me?
>
> thanks,
> Jelle
>
> configure:16996: result: -Lc:\Python27\Lib\config -lpython27
> configure:17003: checking for Python site-packages path
> configure:17009: result: c:\Python27\Lib\site-packages
> configure:17016: checking python extra libraries
> configure:17023: result:
> configure:17030: checking python extra linking flags
> configure:17037: result: None
> configure:17044: checking consistency of all components of python
> development environment
> configure:17070: gcc -o conftest.exe -g -O2 -Ic:\Python27\include
> conftest.c -lm -Lc:\Python27\Lib\config -lpython27 None >&5
> gcc.exe: error: None: No such file or directory
>
>
> _______________________________________________
> graph-tool mailing list
> [hidden email]
> http://lists.skewed.de/mailman/listinfo/graph-tool
>

--
Tiago de Paula Peixoto <[hidden email]>

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