[SciPy-user] problem building scipy

David Cournapeau david@ar.media.kyoto-u.ac...
Wed Feb 20 20:38:55 CST 2008

Robert Kern wrote:
> Are you sure that this is the same numpy as the one being picked up
> during the scipy build? Since you are executing the scipy build as
> root, you may be getting different numpy packages.
Another consequence of installing as root through su is that many 
environment variables are not imported for security reasons. 
LD_LIBRARY_PATH comes to mind (LD_LIBRARY_PATH is also ignored by 
set-uid programs, which is the case of su) ; now, /usr/local is a bit 
special (may be handled specially by ld), but I think it is handled 
differently by different distro on Linux. For example, Ubuntu (and 
debian ?) do put /usr/local/lib in ld.so.conf, whereas fedora does, at 
least from some version (4 ?).

Concretely, an easy way to check is to simply do "su ldd" on a numpy 
module, to see if it can be found by the loader for programs with id 0.



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