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nixpkgs/pkgs/development/compilers/llvm/10/default.nix
pennae dc895fb281 lib: make extendDerivation lighter on eval
the fix to extendDerivation in  unwittingly worsened eval performance by
quite a bit. set elements alone needed over 1GB extra after the change, which
seems disproportionate to how small it was. if we flip the logic used to
determine which outputs to install around and keep a "this one exactly" flag in
the specific outputs instead of a "all of them" in the root we can avoid most
of that cost.
2021-10-15 16:39:10 +02:00

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{ lowPrio, newScope, pkgs, lib, stdenv, cmake
, gccForLibs, preLibcCrossHeaders
, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
, buildLlvmTools # tools, but from the previous stage, for cross
, targetLlvmLibraries # libraries, but from the next stage, for cross
# This is the default binutils, but with *this* version of LLD rather
# than the default LLVM verion's, if LLD is the choice. We use these for
# the `useLLVM` bootstrapping below.
, bootBintoolsNoLibc ?
if stdenv.targetPlatform.linker == "lld"
then null
else pkgs.bintoolsNoLibc
, bootBintools ?
if stdenv.targetPlatform.linker == "lld"
then null
else pkgs.bintools
}:
let
release_version = "10.0.1";
version = release_version; # differentiating these (variables) is important for RCs
targetConfig = stdenv.targetPlatform.config;
fetch = name: sha256: fetchurl {
url = "https://github.com/llvm/llvm-project/releases/download/llvmorg-${release_version}/${name}-${version}.src.tar.xz";
inherit sha256;
};
clang-tools-extra_src = fetch "clang-tools-extra" "06n1yp638rh24xdxv9v2df0qajxbjz4w59b7dd4ky36drwmpi4yh";
llvm_meta = {
license = lib.licenses.ncsa;
maintainers = with lib.maintainers; [ lovek323 raskin dtzWill primeos ];
platforms = lib.platforms.all;
};
tools = lib.makeExtensible (tools: let
callPackage = newScope (tools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch buildLlvmTools; });
mkExtraBuildCommands0 = cc: ''
rsrc="$out/resource-root"
mkdir "$rsrc"
ln -s "${cc.lib}/lib/clang/${release_version}/include" "$rsrc"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'';
mkExtraBuildCommands = cc: mkExtraBuildCommands0 cc + ''
ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
ln -s "${targetLlvmLibraries.compiler-rt.out}/share" "$rsrc/share"
'';
bintoolsNoLibc' =
if bootBintoolsNoLibc == null
then tools.bintoolsNoLibc
else bootBintoolsNoLibc;
bintools' =
if bootBintools == null
then tools.bintools
else bootBintools;
in {
libllvm = callPackage ./llvm {
inherit llvm_meta;
};
# `llvm` historically had the binaries. When choosing an output explicitly,
# we need to reintroduce `outputSpecified` to get the expected behavior e.g. of lib.get*
llvm = tools.libllvm.out // { outputSpecified = false; };
libclang = callPackage ./clang {
inherit clang-tools-extra_src llvm_meta;
};
clang-unwrapped = tools.libclang.out // { outputSpecified = false; };
# disabled until recommonmark supports sphinx 3
#Llvm-manpages = lowPrio (tools.libllvm.override {
# enableManpages = true;
# python3 = pkgs.python3; # don't use python-boot
#});
clang-manpages = lowPrio (tools.libclang.override {
enableManpages = true;
python3 = pkgs.python3; # don't use python-boot
});
# disabled until recommonmark supports sphinx 3
# lldb-manpages = lowPrio (tools.lldb.override {
# enableManpages = true;
# python3 = pkgs.python3; # don't use python-boot
# });
clang = if stdenv.cc.isGNU then tools.libstdcxxClang else tools.libcxxClang;
libstdcxxClang = wrapCCWith rec {
cc = tools.clang-unwrapped;
# libstdcxx is taken from gcc in an ad-hoc way in cc-wrapper.
libcxx = null;
extraPackages = [
targetLlvmLibraries.compiler-rt
];
extraBuildCommands = mkExtraBuildCommands cc;
};
libcxxClang = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = targetLlvmLibraries.libcxx;
extraPackages = [
targetLlvmLibraries.libcxxabi
targetLlvmLibraries.compiler-rt
];
extraBuildCommands = mkExtraBuildCommands cc;
};
lld = callPackage ./lld {
inherit llvm_meta;
};
lldb = callPackage ./lldb {
inherit llvm_meta;
};
# Below, is the LLVM bootstrapping logic. It handles building a
# fully LLVM toolchain from scratch. No GCC toolchain should be
# pulled in. As a consequence, it is very quick to build different
# targets provided by LLVM and we can also build for what GCC
# doesnt support like LLVM. Probably we should move to some other
# file.
bintools-unwrapped = callPackage ./bintools {};
bintoolsNoLibc = wrapBintoolsWith {
bintools = tools.bintools-unwrapped;
libc = preLibcCrossHeaders;
};
bintools = wrapBintoolsWith {
bintools = tools.bintools-unwrapped;
};
clangUseLLVM = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = targetLlvmLibraries.libcxx;
bintools = bintools';
extraPackages = [
targetLlvmLibraries.libcxxabi
targetLlvmLibraries.compiler-rt
] ++ lib.optionals (!stdenv.targetPlatform.isWasm) [
targetLlvmLibraries.libunwind
];
extraBuildCommands = ''
echo "-rtlib=compiler-rt -Wno-unused-command-line-argument" >> $out/nix-support/cc-cflags
echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
'' + lib.optionalString (!stdenv.targetPlatform.isWasm) ''
echo "--unwindlib=libunwind" >> $out/nix-support/cc-cflags
'' + lib.optionalString (!stdenv.targetPlatform.isWasm && stdenv.targetPlatform.useLLVM or false) ''
echo "-lunwind" >> $out/nix-support/cc-ldflags
'' + lib.optionalString stdenv.targetPlatform.isWasm ''
echo "-fno-exceptions" >> $out/nix-support/cc-cflags
'' + mkExtraBuildCommands cc;
};
clangNoLibcxx = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null;
bintools = bintools';
extraPackages = [
targetLlvmLibraries.compiler-rt
];
extraBuildCommands = ''
echo "-rtlib=compiler-rt" >> $out/nix-support/cc-cflags
echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
echo "-nostdlib++" >> $out/nix-support/cc-cflags
'' + mkExtraBuildCommands cc;
};
clangNoLibc = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null;
bintools = bintoolsNoLibc';
extraPackages = [
targetLlvmLibraries.compiler-rt
];
extraBuildCommands = ''
echo "-rtlib=compiler-rt" >> $out/nix-support/cc-cflags
echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
'' + mkExtraBuildCommands cc;
};
clangNoCompilerRt = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null;
bintools = bintoolsNoLibc';
extraPackages = [ ];
extraBuildCommands = ''
echo "-nostartfiles" >> $out/nix-support/cc-cflags
'' + mkExtraBuildCommands0 cc;
};
clangNoCompilerRtWithLibc = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null;
bintools = bintools';
extraPackages = [ ];
extraBuildCommands = mkExtraBuildCommands0 cc;
};
});
libraries = lib.makeExtensible (libraries: let
callPackage = newScope (libraries // buildLlvmTools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch; });
in {
compiler-rt-libc = callPackage ./compiler-rt {
inherit llvm_meta;
stdenv = if stdenv.hostPlatform.useLLVM or false
then overrideCC stdenv buildLlvmTools.clangNoCompilerRtWithLibc
else stdenv;
};
compiler-rt-no-libc = callPackage ./compiler-rt {
inherit llvm_meta;
stdenv = if stdenv.hostPlatform.useLLVM or false
then overrideCC stdenv buildLlvmTools.clangNoCompilerRt
else stdenv;
};
# N.B. condition is safe because without useLLVM both are the same.
compiler-rt = if stdenv.hostPlatform.isAndroid
then libraries.compiler-rt-libc
else libraries.compiler-rt-no-libc;
stdenv = overrideCC stdenv buildLlvmTools.clang;
libcxxStdenv = overrideCC stdenv buildLlvmTools.libcxxClang;
libcxx = callPackage ./libcxx {
inherit llvm_meta;
stdenv = if stdenv.hostPlatform.useLLVM or false
then overrideCC stdenv buildLlvmTools.clangNoLibcxx
else stdenv;
};
libcxxabi = callPackage ./libcxxabi {
inherit llvm_meta;
stdenv = if stdenv.hostPlatform.useLLVM or false
then overrideCC stdenv buildLlvmTools.clangNoLibcxx
else stdenv;
};
libunwind = callPackage ./libunwind {
inherit llvm_meta;
stdenv = if stdenv.hostPlatform.useLLVM or false
then overrideCC stdenv buildLlvmTools.clangNoLibcxx
else stdenv;
};
openmp = callPackage ./openmp {
inherit llvm_meta;
};
});
in { inherit tools libraries release_version; } // libraries // tools