Re: [igraph] Installing python-igraph on MAC OS X (tiger)

[Tamas Nepusz]

Hi Alessandro,

> The compilation of igraph seems ok, and
> the 107 tests of the corresponding testsuite
> were successful.
>
> The problem arises when I want to install
> python-igraph. If I type:
>
> >python2.5 setup.py install
>
> the output is the following:
> [...]
> gcc -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk - 
> g -bundle -undefined dynamic_lookup build/temp.macosx-10.3-i386-2.5/ 
> src/arpackobject.o build/temp.macosx-10.3-i386-2.5/src/bfsiter.o  
> build/temp.macosx-10.3-i386-2.5/src/common.o build/temp.macosx-10.3- 
> i386-2.5/src/convert.o build/temp.macosx-10.3-i386-2.5/src/ 
> edgeobject.o build/temp.macosx-10.3-i386-2.5/src/edgeseqobject.o  
> build/temp.macosx-10.3-i386-2.5/src/error.o build/temp.macosx-10.3- 
> i386-2.5/src/graphobject.o build/temp.macosx-10.3-i386-2.5/src/ 
> igraphmodule.o build/temp.macosx-10.3-i386-2.5/src/vertexobject.o  
> build/temp.macosx-10.3-i386-2.5/src/vertexseqobject.o -L/usr/local/ 
> lib -ligraph -o build/lib.macosx-10.3-i386-2.5/igraph/core.so
This is definitely strange for several reasons:

1. It starts compiling igraph again (the above line is a compilation  
step with gcc)
2. It tries to compile igraph for Mac OS X 10.3, which is one version  
_before_ Tiger.

It is complaining about the missing C core library of igraph. Since  
all the test cases passed, I assume that you have it somewhere on your  
computer. What you should do is the following:

1. Look for a file called libigraph.dylib. This is the compiled C  
core. For me, it's in /usr/lib, but it could be pretty much  
anywhere ;) (If Spotlight is not able to find it, try "find / -name  
libigraph.dylib" from the command line).
2. Add the directory which contains libigraph.dylib to  
LIBIGRAPH_FALLBACK_LIBRARY_DIRS and try to reinstall.

If you can't find libigraph.dylib anywhere, please get back to me and  
I'll try to figure out what happened.

Best,
--
Tamas