nixpkgs/pkgs/development/interpreters/perl/default.nix
Shea Levy 306d5cdf03
perlPackages: Add cross-compilation support.
This involved:

* Installing miniperl as $dev/bin/perl
* Setting miniperl to take INC from
  lib/perl5/{site_perl/,}cross_perl/${version} as well as
  lib/perl5/{site_perl/,}/${version}/${runtimeArch}, in that
  order. miniperl taking from runtimeArch is not really correct, but
  it works in some pure-perl cases (e.g. Config.pm) and can be
  overridden with the cross_perl variant.
* Installing perl-cross's stubs into
  $dev/lib/perl5/cross_perl/${version}
* Patching MakeMaker.pm to gracefully degrade (very slightly) if B.pm
  can't be loaded, which it can't in cross-compilation.
* Passing the right build-time and runtime perls to Makefile.PL
2018-02-28 15:01:32 -05:00

203 lines
7.5 KiB
Nix

{ lib, stdenv, fetchurlBoot, buildPackages
, enableThreading ? stdenv ? glibc, fetchpatch, makeWrapper
}:
with lib;
# We can only compile perl with threading on platforms where we have a
# real glibc in the stdenv.
#
# Instead of silently building an unthreaded perl if this is not the
# case, we force callers to disableThreading explicitly, therefore
# documenting the platforms where the perl is not threaded.
#
# In the case of stdenv linux boot stage1 it's not possible to use
# threading because of the simpleness of the bootstrap glibc, so we
# use enableThreading = false there.
assert enableThreading -> (stdenv ? glibc);
let
libc = if stdenv.cc.libc or null != null then stdenv.cc.libc else "/usr";
libcInc = lib.getDev libc;
libcLib = lib.getLib libc;
crossCompiling = stdenv.buildPlatform != stdenv.hostPlatform;
common = { version, sha256 }: stdenv.mkDerivation (rec {
name = "perl-${version}";
src = fetchurlBoot {
url = "mirror://cpan/src/5.0/${name}.tar.gz";
inherit sha256;
};
# TODO: Add a "dev" output containing the header files.
outputs = [ "out" "man" "devdoc" ] ++
stdenv.lib.optional crossCompiling "dev";
setOutputFlags = false;
patches =
[ ]
# Do not look in /usr etc. for dependencies.
++ optional (versionOlder version "5.26") ./no-sys-dirs.patch
++ optional (versionAtLeast version "5.26") ./no-sys-dirs-5.26.patch
++ optional (versionAtLeast version "5.24") (
# Fix parallel building: https://rt.perl.org/Public/Bug/Display.html?id=132360
fetchurlBoot {
url = "https://rt.perl.org/Public/Ticket/Attachment/1502646/807252/0001-Fix-missing-build-dependency-for-pods.patch";
sha256 = "1bb4mldfp8kq1scv480wm64n2jdsqa3ar46cjp1mjpby8h5dr2r0";
})
++ optional stdenv.isSunOS ./ld-shared.patch
++ optional stdenv.isDarwin ./cpp-precomp.patch
++ optional (stdenv.isDarwin && versionAtLeast version "5.24") ./sw_vers.patch
++ optional crossCompiling ./MakeMaker-cross.patch;
postPatch = ''
pwd="$(type -P pwd)"
substituteInPlace dist/PathTools/Cwd.pm \
--replace "/bin/pwd" "$pwd"
'' + stdenv.lib.optionalString crossCompiling ''
substituteInPlace cnf/configure_tool.sh --replace "cc -E -P" "cc -E"
'';
# Build a thread-safe Perl with a dynamic libperls.o. We need the
# "installstyle" option to ensure that modules are put under
# $out/lib/perl5 - this is the general default, but because $out
# contains the string "perl", Configure would select $out/lib.
# Miniperl needs -lm. perl needs -lrt.
configureFlags =
(if crossCompiling
then [ "-Dlibpth=\"\"" "-Dglibpth=\"\"" ]
else [ "-de" "-Dcc=cc" ])
++ [
"-Uinstallusrbinperl"
"-Dinstallstyle=lib/perl5"
"-Duseshrplib"
"-Dlocincpth=${libcInc}/include"
"-Dloclibpth=${libcLib}/lib"
]
++ optional stdenv.isSunOS "-Dcc=gcc"
++ optional enableThreading "-Dusethreads";
configureScript = stdenv.lib.optionalString (!crossCompiling) "${stdenv.shell} ./Configure";
dontAddPrefix = !crossCompiling;
enableParallelBuilding = !crossCompiling;
preConfigure = optionalString (!crossCompiling) ''
configureFlags="$configureFlags -Dprefix=$out -Dman1dir=$out/share/man/man1 -Dman3dir=$out/share/man/man3"
'' + optionalString (stdenv.isArm || stdenv.isMips) ''
configureFlagsArray=(-Dldflags="-lm -lrt")
'' + optionalString stdenv.isDarwin ''
substituteInPlace hints/darwin.sh --replace "env MACOSX_DEPLOYMENT_TARGET=10.3" ""
'' + optionalString (!enableThreading) ''
# We need to do this because the bootstrap doesn't have a static libpthread
sed -i 's,\(libswanted.*\)pthread,\1,g' Configure
'';
preBuild = optionalString (!(stdenv ? cc && stdenv.cc.nativeTools))
''
# Make Cwd work on NixOS (where we don't have a /bin/pwd).
substituteInPlace dist/PathTools/Cwd.pm --replace "'/bin/pwd'" "'$(type -tP pwd)'"
'';
setupHook = ./setup-hook.sh;
passthru.libPrefix = "lib/perl5/site_perl";
# TODO: it seems like absolute paths to some coreutils is required.
postInstall =
''
# Remove dependency between "out" and "man" outputs.
rm "$out"/lib/perl5/*/*/.packlist
# Remove dependencies on glibc and gcc
sed "/ *libpth =>/c libpth => ' '," \
-i "$out"/lib/perl5/*/*/Config.pm
# TODO: removing those paths would be cleaner than overwriting with nonsense.
substituteInPlace "$out"/lib/perl5/*/*/Config_heavy.pl \
--replace "${libcInc}" /no-such-path \
--replace "${
if stdenv.cc.cc or null != null then stdenv.cc.cc else "/no-such-path"
}" /no-such-path \
--replace "$man" /no-such-path
'' + stdenv.lib.optionalString crossCompiling
''
mkdir -p $dev/lib/perl5/cross_perl/${version}
for dir in cnf/{stub,cpan}; do
cp -r $dir/* $dev/lib/perl5/cross_perl/${version}
done
mkdir -p $dev/bin
install -m755 miniperl $dev/bin/perl
export runtimeArch="$(ls $out/lib/perl5/site_perl/${version})"
# wrapProgram should use a runtime-native SHELL by default, but
# it actually uses a buildtime-native one. If we ever fix that,
# we'll need to fix this to use a buildtime-native one.
#
# Adding the arch-specific directory is morally incorrect, as
# miniperl can't load the native modules there. However, it can
# (and sometimes needs to) load and run some of the pure perl
# code there, so we add it anyway. When needed, stubs can be put
# into $dev/lib/perl5/cross_perl/${version}.
wrapProgram $dev/bin/perl --prefix PERL5LIB : \
"$dev/lib/perl5/cross_perl/${version}:$out/lib/perl5/${version}:$out/lib/perl5/${version}/$runtimeArch"
''; # */
meta = {
homepage = https://www.perl.org/;
description = "The standard implementation of the Perl 5 programmming language";
maintainers = [ maintainers.eelco ];
platforms = platforms.all;
};
} // stdenv.lib.optionalAttrs (stdenv.buildPlatform != stdenv.hostPlatform) rec {
crossVersion = "1.1.8";
perl-cross-src = fetchurlBoot {
url = "https://github.com/arsv/perl-cross/releases/download/${crossVersion}/perl-cross-${crossVersion}.tar.gz";
sha256 = "072j491rpz2qx2sngbg4flqh4lx5865zyql7b9lqm6s1kknjdrh8";
};
# https://github.com/arsv/perl-cross/issues/60
perl-cross-gcc7-patch = fetchpatch {
url = "https://github.com/arsv/perl-cross/commit/07208bc1707b8be3ea170c62c59120020cf0f87f.patch";
sha256 = "1gh8w9m5if2s0lrx2x8f8grp74d1l6d46m8jglpjm5a1kf55j810";
};
depsBuildBuild = [ buildPackages.stdenv.cc makeWrapper ];
postUnpack = ''
unpackFile ${perl-cross-src}
cd perl-cross-*
patch -Np1 -i ${perl-cross-gcc7-patch}
cd ..
cp -R perl-cross-${crossVersion}/* perl-${version}/
'';
configurePlatforms = [ "build" "host" "target" ];
inherit version;
# TODO merge setup hooks
setupHook = ./setup-hook-cross.sh;
});
in rec {
perl = perl524;
perl522 = common {
version = "5.22.4";
sha256 = "1yk1xn4wmnrf2ph02j28khqarpyr24qwysjzkjnjv7vh5dygb7ms";
};
perl524 = common {
version = "5.24.3";
sha256 = "1m2px85kq2fyp2d4rx3bw9kg3car67qfqwrs5vlv96dx0x8rl06b";
};
perl526 = common {
version = "5.26.1";
sha256 = "1p81wwvr5jb81m41d07kfywk5gvbk0axdrnvhc2aghcdbr4alqz7";
};
}