This came up on the thread "mercurial on t2" but I thought I'd start a new
thread on it.
I'd propose that we include in any binary distribution gcc's C, C++ and Fortran
shared libraries. They would be placed in $SAGE_LOCAL/lib. Then we can ensure
that people will run Sage with what libraries Sage was built with, rather than
what versions they may or may not have lying around.
The amount of bloat this would add to the binary would be very small. For
Solaris, the compressed sizes of the files are:
-rwxr-xr-x 1 drkirkby staff 1.5M Feb 22 10:10 libstdc++.so.6.0.10.gz
-rwxr-xr-x 1 drkirkby staff 717K Feb 22 10:10 libgfortran.so.3.0.0.gz
-rw-r--r-- 1 drkirkby staff 80K Feb 22 10:10 libgcc_s.so.1.gz
So adding all 3 adds 2.3 MB of extra code to the binary. But given the binary is
500 MB (not untypical), that is less than 0.5% of bloat.
By doing this, we ensure that people
* Always have the libraries.
* Always have the exact same versions Sage was built with.
I believe the Fortran library might already be included for Linux (I have not
checked), but I'd suggest all 3 were added to binaries.
The C library is the one people most likely will have, but given it is by far
the smallest, we might as well include it to be 100% sure.
Comments?
Dave
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