minix/external/lgpl3/gmp/README
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

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$NetBSD: README,v 1.4 2013/07/15 08:59:47 mrg Exp $
GMP in NetBSD. We need GMP for GCC >= 4.2.
Building GMP without configure - how to port GMP build to a new platform.
The GMP build doesn't map very well to normal make. The ./configure phase
creates a bunch of symlinks and weeds out the sources lists, and there are
files with the same name in different subdirectories linked into the same
final product. All of these issues need to be dealt with.
There are a few steps to this:
- run ./configure, save the output. you can use the makefile
"Makefile.netbsd-gmp" in this directory to run this with the
right options, etc. run it with nbmake-$MACHINE.
- create src/external/gpl3/gmp/lib/libgmp/arch/${MACHINE_ARCH} dir,
and copy these files into it:
config.h
config.m4
gmp-mparam.h
gmp.h
mp.h
some of these files might have src/obj references. in particular
fix GMP_MPARAM_H_SUGGEST to start from ./mpn/... and make sure
we #define __GMP_CC to "gcc -std=gnu99". XXX make this automatic
- parse the ./configure output and note all created symlinks
for mpn. these need to be converted into a new Makefile.inc.
there is a script in this subdir build-gmp-Makefile.inc.awk
that can be used to do this. it should just work to generate
the first section of Makefile.inc if fed the entire configure
output.
assembler files generally want -DOPERATION_${foo} defined for
each way they are compiled or pre-processed. the pre-processor
used is m4 to parse, and we and create .s files from the .asm
files that we then we feed into $CC.
The amd64 port is a good reference to compare. The trialdivtab.h
generation may need to be moved the into libgmp/Makefile itself.
This is still a work in progress and methods used to build may be
changed at any time.
mrg@netbsd.org
- 2011/06/22