[GAP Forum] Compiling GAP code in a Windows environment

[Alexander Konovalov]

Dear David,

I've noticed that this question remains unanswered in the Forum. I'm 
not even sure that compiling GAP code was ever possible under Windows.
Anyhow, as http://www.gap-system.org/Manuals//doc/changes/chap2.html 
says,

"... we no longer recommend using the GAP compiler gac to compile 
GAP code to C, and may withdraw it in future releases. Compiling 
GAP code only ever gave a substantial speedup for rather specific 
types of calculation, and much more benefit can usually be achieved 
quite easily by writing a small number of key functions in C and 
loading them into the kernel as described in LoadDynamicModule 
(Reference: LoadDynamicModule). The gac script will remain available 
as a convenient way of compiling such kernel modules from C."

The latter way is used by some packages whose Windows binaries are 
supplied with GAP (EDIM, orb, Browse, io and cvec), though their 
development is happening under Linux, and Windows binaries are 
compiled on a Windows machine with a full Cygwin installation. 
You may look at those packages, if you would be interested in going 
that way.

Best regards,
Alexander





On 13 Nov 2012, at 07:59, David Harden wrote:

> I have GAP installed on my Windows machine. I am interested in doing a
> computation which makes use of a long list (of permutations on 32 points)
> and repeating the same operations many times over, so I think compiling my
> code can give me a substantial speed-up. How do I compile?
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