75 lines
2.3 KiB
Nix
75 lines
2.3 KiB
Nix
{ lib, stdenv, fetchurl, gmp, writeScript }:
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# Note: this package is used for bootstrapping fetchurl, and thus
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# cannot use fetchpatch! All mutable patches (generated by GitHub or
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# cgit) that are needed here should be included directly in Nixpkgs as
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# files.
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stdenv.mkDerivation rec {
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version = "4.2.1";
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pname = "mpfr";
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src = fetchurl {
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urls = [
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"https://www.mpfr.org/${pname}-${version}/${pname}-${version}.tar.xz"
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"mirror://gnu/mpfr/${pname}-${version}.tar.xz"
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];
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hash = "sha256-J3gHNTpnJpeJlpRa8T5Sgp46vXqaW3+yeTiU4Y8fy7I=";
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};
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outputs = [ "out" "dev" "doc" "info" ];
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strictDeps = true;
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# mpfr.h requires gmp.h
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propagatedBuildInputs = [ gmp ];
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configureFlags =
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lib.optional stdenv.hostPlatform.isSunOS "--disable-thread-safe"
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++ lib.optional stdenv.hostPlatform.is64bit "--with-pic"
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++ lib.optionals stdenv.hostPlatform.isPower64 [
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# Without this, the `tget_set_d128` test experiences a link
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# error due to missing `__dpd_trunctdkf`.
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"--disable-decimal-float"
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];
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doCheck = true; # not cross;
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enableParallelBuilding = true;
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passthru = {
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updateScript = writeScript "update-mpfr" ''
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#!/usr/bin/env nix-shell
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#!nix-shell -i bash -p curl pcre common-updater-scripts
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set -eu -o pipefail
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# Expect the text in format of '<title>GNU MPFR version 4.1.1</title>'
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new_version="$(curl -s https://www.mpfr.org/mpfr-current/ |
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pcregrep -o1 '<title>GNU MPFR version ([0-9.]+)</title>')"
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update-source-version ${pname} "$new_version"
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'';
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};
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meta = {
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homepage = "https://www.mpfr.org/";
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description = "Library for multiple-precision floating-point arithmetic";
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longDescription = ''
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The GNU MPFR library is a C library for multiple-precision
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floating-point computations with correct rounding. MPFR is
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based on the GMP multiple-precision library.
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The main goal of MPFR is to provide a library for
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multiple-precision floating-point computation which is both
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efficient and has a well-defined semantics. It copies the good
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ideas from the ANSI/IEEE-754 standard for double-precision
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floating-point arithmetic (53-bit mantissa).
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'';
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license = lib.licenses.lgpl2Plus;
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maintainers = [ ];
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platforms = lib.platforms.all;
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};
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}
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