e3209ae766
This decreases external dependencies for crosscompilation. Note that these libraries are not built nor used by Minix itself. Furthermore, the shell scripts that download the tarballs for these libraries, gcc, binutils, and gmake now also support curl in addition to wget.
52 lines
1.7 KiB
Plaintext
52 lines
1.7 KiB
Plaintext
$NetBSD: README,v 1.3 2012/03/20 08:21:38 mrg Exp $
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GMP in NetBSD. We need GMP for GCC >= 4.2.
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Building GMP without configure - how to port GMP build to a new platform.
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The GMP build doesn't map very well to normal make. The ./configure phase
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creates a bunch of symlinks and weeds out the sources lists, and there are
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files with the same name in different subdirectories linked into the same
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final product. All of these issues need to be dealt with.
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There are a few steps to this:
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- run ./configure, save the output
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- create src/external/gpl3/gmp/lib/libgmp/arch/${MACHINE_ARCH} dir,
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and copy these files into it:
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config.h
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config.m4
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gmp-mparam.h
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gmp.h
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mp.h
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some of these files might have src/obj references. in particular
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fix GMP_MPARAM_H_SUGGEST to start from ./mpn/... and make sure
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we #define __GMP_CC to "gcc -std=gnu99". XXX make this automatic
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- parse the ./configure output and note all created symlinks
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for mpn. these need to be converted into a new Makefile.inc.
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there is a script in this subdir build-gmp-Makefile.inc.awk
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that can be used to do this. it should just work to generate
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the first section of Makefile.inc if fed the entire configure
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output.
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assembler files generally want -DOPERATION_${foo} defined for
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each way they are compiled or pre-processed. the pre-processor
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used is m4 to parse, and we and create .s files from the .asm
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files that we then we feed into $CC.
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The amd64 port is a good reference to compare. The trialdivtab.h
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generation may need to be moved the into libgmp/Makefile itself.
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This is still a work in progress and methods used to build may be
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changed at any time.
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mrg@netbsd.org
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- 2011/06/22
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