nixpkgs/pkgs/development/libraries/mpfr/default.nix
Peter Simons 1a6039cb45 Enable parallel building of gcc, glibc, gmp, mpfr, ncurses, coreutils, perl, python, git, and qt4.
If a build expressions has set "enableParallelBuilding = true", then the
generic builder may utilize more than one CPU core to build that particular
expression. This feature works out of the box for GNU Make. Expressions that
use other build drivers like Boost.Jam or SCons have to specify appropriate
flags such as "-j${NIX_BUILD_CORES}" themselves.

svn path=/nixpkgs/trunk/; revision=23042
2010-08-08 18:51:42 +00:00

36 lines
992 B
Nix

{stdenv, fetchurl, gmp}:
stdenv.mkDerivation rec {
name = "mpfr-2.4.2";
src = fetchurl {
url = "mirror://gnu/mpfr/${name}.tar.bz2";
sha256 = "1fpjphja2ridy1wfc53mcbavj4axl28ibvnawj1217flm045mry7";
};
buildInputs = [ gmp ];
doCheck = true;
enableParallelBuilding = true;
meta = {
homepage = http://www.mpfr.org/;
description = "GNU MPFR, a library for multiple-precision floating-point arithmetic";
longDescription = ''
The GNU MPFR library is a C library for multiple-precision
floating-point computations with correct rounding. MPFR is
based on the GMP multiple-precision library.
The main goal of MPFR is to provide a library for
multiple-precision floating-point computation which is both
efficient and has a well-defined semantics. It copies the good
ideas from the ANSI/IEEE-754 standard for double-precision
floating-point arithmetic (53-bit mantissa).
'';
license = "LGPLv2+";
};
}