I've asked this before, but have received no response, so I thought I'd try again.
Numerous bits of Sage use options to the compiler. Those options often need to change depending on the compiler in use. For example, -fPIC is a GNU-specific option which is commonly used in Sage. -m64 works for GCC and Sun Studio, but on HP-UX using the HP compiler, one must use +DD64 to generate 64-bit code. Apart from a few options (-g, -c, -I and -o being a few I can think of), no two compilers seem to use the same option to mean the same thing. I've written a couple of scripts testcc.sh and testcxx.sh which return one of * GCC * Sun_Studio * HP_on_Tru64 * HP_on_Alpha_Linux * HP_on_HP-UX * IBM_on_AIX * Unknown which will allow us to determine the correct compiler flags to use for any of the above compilers (except 'Unknown' of course)! These shell scripts need to be available very early on in the Sage build - before any C code is run, so they can't be in a compressed .spkg file, as bzip2 needs to be built before they can be used. The ticket for these is http://trac.sagemath.org/sage_trac/ticket/7505 and has been reviewed. The reviewer, Martin Albrecht, as said "The scripts are fine, so you get a positive review as soon as we figured out where to put them." One option I believe will work is to put the scripts in $SAGE_ROOT/spkg/base/ then update $SAGE_ROOT/spkg/install so it copies the scripts to $SAGE_LOCAL/bin. The only change needed to the $SAGE_ROOT/spkg/install script is from cp base/sage-* "$SAGE_LOCAL/bin/" to cp base/sage-* base/testcc.sh base/testcxx.sh "$SAGE_LOCAL/bin/" i.e. this patch http://trac.sagemath.org/sage_trac/attachment/ticket/7505/install.patch The scripts can not cause any problems in Sage, as nothing at all currently makes use of them. But once they are available, I intending writing code which will make use of them. Can William or someone else tell me where the scripts should go? Dave -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
