Libgmp port for PSP

[laichung]

I successfully compile the library of GMP, if anyone interested about it , I can share the file on the web. The source code can download from the web below.

GNU Multiple Precision Arithmetic Library
http://www.swox.com/gmp/

But I have fews question about compiling. Can anyone please kindly help me?Thanks!

1. Since psp-sdk is a complete compiler for compiling source code, so firstly I just try to edit the "configure" file to add a host for psp. But you know it must fail, because configure will compile a test.c file to check the default extension of the output file. (of course many other tests afterwards, but we cant skip this test) So what can I do?

The way I used is , run configure and set host as "none" (to tell gmp to use c code, since gmp can compile as platform depend), after configure complete those setting, I change the makefile in every folder and re-set all the CC to psp-gcc, and add some tags for LIB ,etc. thanks god it is ok and the library generated seem work perfect. But I think someone can teach me a better way to do this again.

2. GMP use asm code to speed up the calculation. But that's depend on the CPU. The question is , is PSP cpu 64bit or 32bit, or does anyone test it before? Since R4000 based cpu seems having both 64bit or 32bit in market.

Thanks everyone.

[Raphael]

The PSP is 32bit custom R4000 MIPS core. There is however the vfpu which is perfect for arithmetic and data processing.

[jimparis]

1. Since psp-sdk is a complete compiler for compiling source code, so firstly I just try to edit the "configure" file to add a host for psp. But you know it must fail, because configure will compile a test.c file to check the default extension of the output file. (of course many other tests afterwards, but we cant skip this test) So what can I do?

Many libraries and programs in the psp svn repository use autoconf, so you can see how they do it. See e.g. SDL/README.psp, under "Building autoconf applications", and just ignore the --with-sdl part.