It would be really good to get this patch into Sage asap, as it allows one to
build a very large part of the Sage library on OpenSolaris.
All it does, is adds these 4 lines a SCons configuration file
if env['PLATFORM'] != "darwin" and os.environ['SAGE64']=="yes":
env.Append( CFLAGS="-O2 -g -m64" )
env.Append( CXXFLAGS="-O2 -g -m64" )
env.Append( LINKFLAGS="-m64" )
which adds the all important -m64 flag if SAGE64 is set to "yes" and the
operating system is *not* OS X. The SAGE64 variable is used on OS X in another
part of the script, but some other obscure flags are added, which I don't want
to add on Solaris.
http://trac.sagemath.org/sage_trac/ticket/9097
It should be fairly obvious that this fix is very low risk, as it only has an
effect if one uses SAGE64 on some operating system other than OS X, and so far
it is only ever been used on OS X.
Dave
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