py27-igraph cannot find include on Lion

[snc@…]

:info:build In file included from src/arpackobject.c:23:
:info:build src/arpackobject.h:27:10: fatal error: 'igraph_arpack.h' file not found
:info:build #include <igraph_arpack.h>

[hakanterelius@…]

I had the same problem. It seems like the error is in the pkg-config file for igraph.

$ pkg-config igraph --cflags
-I/opt/local/include/igraph/igraph 

while the include path is actually

/opt/local/include/igraph

Modifying /opt/local/lib/pkgconfig/igraph.pc to

prefix=/opt/local
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=/opt/local/include

Name: libigraph
Description: A library for creating and manipulating graphs
Version: 0.6
URL: http://igraph.sourceforge.net
Libs: -L${libdir} -ligraph
Libs.private: -lxml2 -lz -lm
Cflags: -I${includedir}/igraph

solved the problem for me.

[snc@…]

I'll look into igraph's ./configure to see if there is a flag we can use there, else editing the pkgconfig file directly.

[snc@…]

The includedir was previously changed to this for #26975.

[snc@…]

Fixed in r94555.

[snc@…]

Doesn't look like py-igraph needs rebuilt. This should be all done then