d0677e6d45
This adds a warning to the top of each “boot” package that reads: Note: this package is used for bootstrapping fetchurl, and thus cannot use fetchpatch! All mutable patches (generated by GitHub or cgit) that are needed here should be included directly in Nixpkgs as files. This makes it clear to maintainer that they may need to treat this package a little differently than others. Importantly, we can’t use fetchpatch here due to using <nix/fetchurl.nix>. To avoid having stale hashes, we need to include patches that are subject to changing overtime (for instance, gitweb’s patches contain a version number at the bottom).
87 lines
3.5 KiB
Nix
87 lines
3.5 KiB
Nix
{ stdenv, fetchurl, m4
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, cxx ? !stdenv.hostPlatform.useAndroidPrebuilt && !stdenv.hostPlatform.isWasm
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, buildPackages
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, withStatic ? false }:
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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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let inherit (stdenv.lib) optional; in
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let self = stdenv.mkDerivation rec {
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name = "gmp-6.2.0";
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src = fetchurl { # we need to use bz2, others aren't in bootstrapping stdenv
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urls = [ "mirror://gnu/gmp/${name}.tar.bz2" "ftp://ftp.gmplib.org/pub/${name}/${name}.tar.bz2" ];
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sha256 = "1sji8i9yjzfv5l2fsadpgjfyn452q6ab9zvm02k23ssd275rj77m";
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};
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#outputs TODO: split $cxx due to libstdc++ dependency
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# maybe let ghc use a version with *.so shared with rest of nixpkgs and *.a added
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# - see #5855 for related discussion
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outputs = [ "out" "dev" "info" ];
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passthru.static = self.out;
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depsBuildBuild = [ buildPackages.stdenv.cc ];
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nativeBuildInputs = [ m4 ];
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configureFlags = [
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"--with-pic"
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(stdenv.lib.enableFeature cxx "cxx")
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# Build a "fat binary", with routines for several sub-architectures
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# (x86), except on Solaris where some tests crash with "Memory fault".
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# See <https://hydra.nixos.org/build/2760931>, for instance.
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#
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# no darwin because gmp uses ASM that clang doesn't like
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(stdenv.lib.enableFeature (!stdenv.isSunOS && stdenv.hostPlatform.isx86) "fat")
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# The config.guess in GMP tries to runtime-detect various
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# ARM optimization flags via /proc/cpuinfo (and is also
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# broken on multicore CPUs). Avoid this impurity.
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"--build=${stdenv.buildPlatform.config}"
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] ++ optional (cxx && stdenv.isDarwin) "CPPFLAGS=-fexceptions"
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++ optional (stdenv.isDarwin && stdenv.is64bit) "ABI=64"
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# to build a .dll on windows, we need --disable-static + --enable-shared
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# see https://gmplib.org/manual/Notes-for-Particular-Systems.html
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++ optional (!withStatic && stdenv.hostPlatform.isWindows) "--disable-static --enable-shared"
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;
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doCheck = true; # not cross;
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dontDisableStatic = withStatic;
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enableParallelBuilding = true;
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meta = with stdenv.lib; {
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homepage = "https://gmplib.org/";
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description = "GNU multiple precision arithmetic library";
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license = licenses.gpl3Plus;
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longDescription =
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'' GMP is a free library for arbitrary precision arithmetic, operating
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on signed integers, rational numbers, and floating point numbers.
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There is no practical limit to the precision except the ones implied
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by the available memory in the machine GMP runs on. GMP has a rich
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set of functions, and the functions have a regular interface.
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The main target applications for GMP are cryptography applications
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and research, Internet security applications, algebra systems,
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computational algebra research, etc.
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GMP is carefully designed to be as fast as possible, both for small
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operands and for huge operands. The speed is achieved by using
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fullwords as the basic arithmetic type, by using fast algorithms,
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with highly optimised assembly code for the most common inner loops
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for a lot of CPUs, and by a general emphasis on speed.
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GMP is faster than any other bignum library. The advantage for GMP
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increases with the operand sizes for many operations, since GMP uses
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asymptotically faster algorithms.
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'';
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platforms = platforms.all;
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maintainers = [ maintainers.peti maintainers.vrthra ];
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};
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};
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in self
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