Philipp Thomas wrote:
On Sat, 12 Dec 2009 11:08:11 +0000, you wrote:
where problems arise if a library included in Sage is installed on the system
too.
Of cause they do! It's simply wrong to use and install libraries that
the system already supplies. A sane software package detects the
libraries installed in the system and only compiles/installs those
that are missing. If distributed in compiled form, the only sane way
is to statically link in the libraries to avoid clashes with system
supplied ones.
What could you do if the system supplies a library, but it's not the latest
release, and you need the latest?
Is there a way to specify that only the first copy of the library is linked, and
not any other copies gcc might find? Readline is not the only library where
issues have arisen (OpenSSL libraries on OpenSolaris is another example).
AFAIK there is no way.
Philipp
