370 lines
15 KiB
Nix
370 lines
15 KiB
Nix
# DO NOT port this expression to hadrian. It is not possible to build a GHC
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# cross compiler with 9.4.* and hadrian.
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{ lib, stdenv, pkgsBuildTarget, pkgsHostTarget, targetPackages
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# build-tools
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, bootPkgs
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, autoconf, automake, coreutils, fetchpatch, fetchurl, perl, python3, m4, sphinx
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, xattr, autoSignDarwinBinariesHook
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, bash
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, libiconv ? null, ncurses
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, glibcLocales ? null
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, # GHC can be built with system libffi or a bundled one.
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libffi ? null
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, useLLVM ? !(stdenv.targetPlatform.isx86
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|| stdenv.targetPlatform.isPower
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|| stdenv.targetPlatform.isSparc
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|| (stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin))
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, # LLVM is conceptually a run-time-only depedendency, but for
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# non-x86, we need LLVM to bootstrap later stages, so it becomes a
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# build-time dependency too.
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buildTargetLlvmPackages, llvmPackages
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, # If enabled, GHC will be built with the GPL-free but slightly slower native
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# bignum backend instead of the faster but GPLed gmp backend.
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enableNativeBignum ? !(lib.meta.availableOn stdenv.hostPlatform gmp)
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, gmp
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, # If enabled, use -fPIC when compiling static libs.
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enableRelocatedStaticLibs ? stdenv.targetPlatform != stdenv.hostPlatform
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# aarch64 outputs otherwise exceed 2GB limit
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, enableProfiledLibs ? !stdenv.targetPlatform.isAarch64
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, # Whether to build dynamic libs for the standard library (on the target
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# platform). Static libs are always built.
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enableShared ? with stdenv.targetPlatform; !isWindows && !useiOSPrebuilt && !isStatic
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, # Whether to build terminfo.
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enableTerminfo ? !stdenv.targetPlatform.isWindows
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, # What flavour to build. An empty string indicates no
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# specific flavour and falls back to ghc default values.
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ghcFlavour ? lib.optionalString (stdenv.targetPlatform != stdenv.hostPlatform)
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(if useLLVM then "perf-cross" else "perf-cross-ncg")
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, # Whether to build sphinx documentation.
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enableDocs ? (
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# Docs disabled for musl and cross because it's a large task to keep
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# all `sphinx` dependencies building in those environments.
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# `sphinx` pulls in among others:
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# Ruby, Python, Perl, Rust, OpenGL, Xorg, gtk, LLVM.
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(stdenv.targetPlatform == stdenv.hostPlatform)
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&& !stdenv.hostPlatform.isMusl
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)
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, enableHaddockProgram ?
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# Disabled for cross; see note [HADDOCK_DOCS].
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(stdenv.targetPlatform == stdenv.hostPlatform)
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, # Whether to disable the large address space allocator
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# necessary fix for iOS: https://www.reddit.com/r/haskell/comments/4ttdz1/building_an_osxi386_to_iosarm64_cross_compiler/d5qvd67/
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disableLargeAddressSpace ? stdenv.targetPlatform.isiOS
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}:
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assert !enableNativeBignum -> gmp != null;
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# Cross cannot currently build the `haddock` program for silly reasons,
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# see note [HADDOCK_DOCS].
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assert (stdenv.targetPlatform != stdenv.hostPlatform) -> !enableHaddockProgram;
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let
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inherit (stdenv) buildPlatform hostPlatform targetPlatform;
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inherit (bootPkgs) ghc;
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# TODO(@Ericson2314) Make unconditional
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targetPrefix = lib.optionalString
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(targetPlatform != hostPlatform)
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"${targetPlatform.config}-";
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buildMK = ''
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BuildFlavour = ${ghcFlavour}
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ifneq \"\$(BuildFlavour)\" \"\"
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include mk/flavours/\$(BuildFlavour).mk
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endif
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BUILD_SPHINX_HTML = ${if enableDocs then "YES" else "NO"}
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BUILD_SPHINX_PDF = NO
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'' +
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# Note [HADDOCK_DOCS]:
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# Unfortunately currently `HADDOCK_DOCS` controls both whether the `haddock`
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# program is built (which we generally always want to have a complete GHC install)
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# and whether it is run on the GHC sources to generate hyperlinked source code
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# (which is impossible for cross-compilation); see:
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# https://gitlab.haskell.org/ghc/ghc/-/issues/20077
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# This implies that currently a cross-compiled GHC will never have a `haddock`
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# program, so it can never generate haddocks for any packages.
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# If this is solved in the future, we'd like to unconditionally
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# build the haddock program (removing the `enableHaddockProgram` option).
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''
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HADDOCK_DOCS = ${if enableHaddockProgram then "YES" else "NO"}
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# Build haddocks for boot packages with hyperlinking
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EXTRA_HADDOCK_OPTS += --hyperlinked-source --quickjump
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DYNAMIC_GHC_PROGRAMS = ${if enableShared then "YES" else "NO"}
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BIGNUM_BACKEND = ${if enableNativeBignum then "native" else "gmp"}
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'' + lib.optionalString (targetPlatform != hostPlatform) ''
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Stage1Only = ${if targetPlatform.system == hostPlatform.system then "NO" else "YES"}
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CrossCompilePrefix = ${targetPrefix}
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'' + lib.optionalString (!enableProfiledLibs) ''
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GhcLibWays = "v dyn"
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'' +
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# -fexternal-dynamic-refs apparently (because it's not clear from the documentation)
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# makes the GHC RTS able to load static libraries, which may be needed for TemplateHaskell.
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# This solution was described in https://www.tweag.io/blog/2020-09-30-bazel-static-haskell
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lib.optionalString enableRelocatedStaticLibs ''
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GhcLibHcOpts += -fPIC -fexternal-dynamic-refs
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GhcRtsHcOpts += -fPIC -fexternal-dynamic-refs
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'' + lib.optionalString targetPlatform.useAndroidPrebuilt ''
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EXTRA_CC_OPTS += -std=gnu99
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'';
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# Splicer will pull out correct variations
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libDeps = platform: lib.optional enableTerminfo ncurses
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++ [libffi]
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++ lib.optional (!enableNativeBignum) gmp
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++ lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv;
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# TODO(@sternenseemann): is buildTarget LLVM unnecessary?
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# GHC doesn't seem to have {LLC,OPT}_HOST
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toolsForTarget = [
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pkgsBuildTarget.targetPackages.stdenv.cc
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] ++ lib.optional useLLVM buildTargetLlvmPackages.llvm;
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targetCC = builtins.head toolsForTarget;
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# Sometimes we have to dispatch between the bintools wrapper and the unwrapped
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# derivation for certain tools depending on the platform.
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bintoolsFor = {
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# GHC needs install_name_tool on all darwin platforms. On aarch64-darwin it is
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# part of the bintools wrapper (due to codesigning requirements), but not on
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# x86_64-darwin.
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install_name_tool =
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if stdenv.targetPlatform.isAarch64
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then targetCC.bintools
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else targetCC.bintools.bintools;
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# Same goes for strip.
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strip =
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# TODO(@sternenseemann): also use wrapper if linker == "bfd" or "gold"
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if stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin
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then targetCC.bintools
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else targetCC.bintools.bintools;
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};
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# Use gold either following the default, or to avoid the BFD linker due to some bugs / perf issues.
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# But we cannot avoid BFD when using musl libc due to https://sourceware.org/bugzilla/show_bug.cgi?id=23856
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# see #84670 and #49071 for more background.
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useLdGold = targetPlatform.linker == "gold" ||
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(targetPlatform.linker == "bfd" && (targetCC.bintools.bintools.hasGold or false) && !targetPlatform.isMusl);
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# Makes debugging easier to see which variant is at play in `nix-store -q --tree`.
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variantSuffix = lib.concatStrings [
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(lib.optionalString stdenv.hostPlatform.isMusl "-musl")
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(lib.optionalString enableNativeBignum "-native-bignum")
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];
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in
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# C compiler, bintools and LLVM are used at build time, but will also leak into
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# the resulting GHC's settings file and used at runtime. This means that we are
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# currently only able to build GHC if hostPlatform == buildPlatform.
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assert targetCC == pkgsHostTarget.targetPackages.stdenv.cc;
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assert buildTargetLlvmPackages.llvm == llvmPackages.llvm;
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assert stdenv.targetPlatform.isDarwin -> buildTargetLlvmPackages.clang == llvmPackages.clang;
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stdenv.mkDerivation (rec {
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version = "9.4.3";
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pname = "${targetPrefix}ghc${variantSuffix}";
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src = fetchurl {
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url = "https://downloads.haskell.org/ghc/${version}/ghc-${version}-src.tar.xz";
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sha256 = "eaf63949536ede50ee39179f2299d5094eb9152d87cc6fb2175006bc98e8905a";
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};
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enableParallelBuilding = true;
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outputs = [ "out" "doc" ];
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postPatch = "patchShebangs .";
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# GHC needs the locale configured during the Haddock phase.
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LANG = "en_US.UTF-8";
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# GHC is a bit confused on its cross terminology.
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# TODO(@sternenseemann): investigate coreutils dependencies and pass absolute paths
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preConfigure = ''
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for env in $(env | grep '^TARGET_' | sed -E 's|\+?=.*||'); do
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export "''${env#TARGET_}=''${!env}"
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done
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# GHC is a bit confused on its cross terminology, as these would normally be
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# the *host* tools.
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export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
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export CXX="${targetCC}/bin/${targetCC.targetPrefix}c++"
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# Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
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export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${lib.optionalString useLdGold ".gold"}"
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export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
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export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
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export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
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export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
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export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
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export STRIP="${bintoolsFor.strip}/bin/${bintoolsFor.strip.targetPrefix}strip"
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'' + lib.optionalString (stdenv.targetPlatform.linker == "cctools") ''
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export OTOOL="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}otool"
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export INSTALL_NAME_TOOL="${bintoolsFor.install_name_tool}/bin/${bintoolsFor.install_name_tool.targetPrefix}install_name_tool"
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'' + lib.optionalString useLLVM ''
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export LLC="${lib.getBin buildTargetLlvmPackages.llvm}/bin/llc"
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export OPT="${lib.getBin buildTargetLlvmPackages.llvm}/bin/opt"
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'' + lib.optionalString (useLLVM && stdenv.targetPlatform.isDarwin) ''
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# LLVM backend on Darwin needs clang: https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/codegens.html#llvm-code-generator-fllvm
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export CLANG="${buildTargetLlvmPackages.clang}/bin/${buildTargetLlvmPackages.clang.targetPrefix}clang"
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'' + ''
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echo -n "${buildMK}" > mk/build.mk
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sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
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'' + lib.optionalString (stdenv.isLinux && hostPlatform.libc == "glibc") ''
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export LOCALE_ARCHIVE="${glibcLocales}/lib/locale/locale-archive"
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'' + lib.optionalString (!stdenv.isDarwin) ''
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export NIX_LDFLAGS+=" -rpath $out/lib/ghc-${version}"
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'' + lib.optionalString stdenv.isDarwin ''
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export NIX_LDFLAGS+=" -no_dtrace_dof"
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# GHC tries the host xattr /usr/bin/xattr by default which fails since it expects python to be 2.7
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export XATTR=${lib.getBin xattr}/bin/xattr
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'' + lib.optionalString targetPlatform.useAndroidPrebuilt ''
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sed -i -e '5i ,("armv7a-unknown-linux-androideabi", ("e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64", "cortex-a8", ""))' llvm-targets
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'' + lib.optionalString targetPlatform.isMusl ''
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echo "patching llvm-targets for musl targets..."
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echo "Cloning these existing '*-linux-gnu*' targets:"
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grep linux-gnu llvm-targets | sed 's/^/ /'
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echo "(go go gadget sed)"
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sed -i 's,\(^.*linux-\)gnu\(.*\)$,\0\n\1musl\2,' llvm-targets
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echo "llvm-targets now contains these '*-linux-musl*' targets:"
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grep linux-musl llvm-targets | sed 's/^/ /'
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echo "And now patching to preserve '-musleabi' as done with '-gnueabi'"
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# (aclocal.m4 is actual source, but patch configure as well since we don't re-gen)
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for x in configure aclocal.m4; do
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substituteInPlace $x \
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--replace '*-android*|*-gnueabi*)' \
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'*-android*|*-gnueabi*|*-musleabi*)'
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done
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''
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# HACK: allow bootstrapping with GHC 8.10 which works fine, as we don't have
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# binary 9.0 packaged. Bootstrapping with 9.2 is broken without hadrian.
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+ ''
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substituteInPlace configure --replace \
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'MinBootGhcVersion="9.0"' \
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'MinBootGhcVersion="8.10"'
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'';
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# TODO(@Ericson2314): Always pass "--target" and always prefix.
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configurePlatforms = [ "build" "host" ]
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++ lib.optional (targetPlatform != hostPlatform) "target";
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# `--with` flags for libraries needed for RTS linker
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configureFlags = [
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"--datadir=$doc/share/doc/ghc"
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"--with-curses-includes=${ncurses.dev}/include" "--with-curses-libraries=${ncurses.out}/lib"
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] ++ lib.optionals (libffi != null) [
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"--with-system-libffi"
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"--with-ffi-includes=${targetPackages.libffi.dev}/include"
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"--with-ffi-libraries=${targetPackages.libffi.out}/lib"
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] ++ lib.optionals (targetPlatform == hostPlatform && !enableNativeBignum) [
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"--with-gmp-includes=${targetPackages.gmp.dev}/include"
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"--with-gmp-libraries=${targetPackages.gmp.out}/lib"
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] ++ lib.optionals (targetPlatform == hostPlatform && hostPlatform.libc != "glibc" && !targetPlatform.isWindows) [
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"--with-iconv-includes=${libiconv}/include"
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"--with-iconv-libraries=${libiconv}/lib"
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] ++ lib.optionals (targetPlatform != hostPlatform) [
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"--enable-bootstrap-with-devel-snapshot"
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] ++ lib.optionals useLdGold [
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"CFLAGS=-fuse-ld=gold"
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"CONF_GCC_LINKER_OPTS_STAGE1=-fuse-ld=gold"
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"CONF_GCC_LINKER_OPTS_STAGE2=-fuse-ld=gold"
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] ++ lib.optionals (disableLargeAddressSpace) [
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"--disable-large-address-space"
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];
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# Make sure we never relax`$PATH` and hooks support for compatibility.
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strictDeps = true;
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# Don’t add -liconv to LDFLAGS automatically so that GHC will add it itself.
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dontAddExtraLibs = true;
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nativeBuildInputs = [
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perl autoconf automake m4 python3
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ghc bootPkgs.alex bootPkgs.happy bootPkgs.hscolour
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] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
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autoSignDarwinBinariesHook
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] ++ lib.optionals enableDocs [
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sphinx
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];
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# For building runtime libs
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depsBuildTarget = toolsForTarget;
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buildInputs = [ perl bash ] ++ (libDeps hostPlatform);
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depsTargetTarget = map lib.getDev (libDeps targetPlatform);
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depsTargetTargetPropagated = map (lib.getOutput "out") (libDeps targetPlatform);
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# required, because otherwise all symbols from HSffi.o are stripped, and
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# that in turn causes GHCi to abort
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stripDebugFlags = [ "-S" ] ++ lib.optional (!targetPlatform.isDarwin) "--keep-file-symbols";
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checkTarget = "test";
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hardeningDisable =
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[ "format" ]
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# In nixpkgs, musl based builds currently enable `pie` hardening by default
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# (see `defaultHardeningFlags` in `make-derivation.nix`).
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# But GHC cannot currently produce outputs that are ready for `-pie` linking.
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# Thus, disable `pie` hardening, otherwise `recompile with -fPIE` errors appear.
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# See:
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# * https://github.com/NixOS/nixpkgs/issues/129247
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# * https://gitlab.haskell.org/ghc/ghc/-/issues/19580
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++ lib.optional stdenv.targetPlatform.isMusl "pie";
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# big-parallel allows us to build with more than 2 cores on
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# Hydra which already warrants a significant speedup
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requiredSystemFeatures = [ "big-parallel" ];
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postInstall = ''
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# Install the bash completion file.
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install -D -m 444 utils/completion/ghc.bash $out/share/bash-completion/completions/${targetPrefix}ghc
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'';
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passthru = {
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inherit bootPkgs targetPrefix;
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inherit llvmPackages;
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inherit enableShared;
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# This is used by the haskell builder to query
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# the presence of the haddock program.
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hasHaddock = enableHaddockProgram;
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# Our Cabal compiler name
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haskellCompilerName = "ghc-${version}";
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};
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meta = {
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homepage = "http://haskell.org/ghc";
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description = "The Glasgow Haskell Compiler";
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maintainers = with lib.maintainers; [
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guibou
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] ++ lib.teams.haskell.members;
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timeout = 24 * 3600;
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inherit (ghc.meta) license platforms;
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};
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} // lib.optionalAttrs targetPlatform.useAndroidPrebuilt {
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dontStrip = true;
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dontPatchELF = true;
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noAuditTmpdir = true;
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})
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