cafkafk/nixpkgs
cafkafk/nixpkgs
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 2

llvm8: support c++ in cross case

Browse source 
this adds libc++ to the LLVM cross, giving us access to the full
Nixpkgs set. This requires 4 stages of wrapped compilers:

- Clang with no libraries
- Clang with just compiler-rt
- Clang with Libc, and compiler-rt
- Clang with Libc++, Libc, and compiler-rt
This commit is contained in:
Matthew Bauer 2019-04-11 20:51:48 -04:00
parent d0506bed9f
commit d453273fbf
9 changed files with 95 additions and 24 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
pkgs/build-support/cc-wrapper/default.nix
View file

@ -45,9 +45,9 @@ let
# The wrapper scripts use 'cat' and 'grep', so we may need coreutils.
coreutils_bin = if nativeTools then "" else getBin coreutils;
default_cxx_stdlib_compile = if (targetPlatform.isLinux && !(cc.isGNU or false) && !nativeTools && cc ? gcc) then
default_cxx_stdlib_compile = if (targetPlatform.isLinux && !(cc.isGNU or false) && !nativeTools && cc ? gcc) && !(targetPlatform.useLLVM or false) then
"-isystem $(echo -n ${cc.gcc}/include/c++/*) -isystem $(echo -n ${cc.gcc}/include/c++/*)/$(${cc.gcc}/bin/gcc -dumpmachine)"
else if targetPlatform.isDarwin && (libcxx != null) && (cc.isClang or false) then
else if targetPlatform.isDarwin && (libcxx != null) && (cc.isClang or false) && !(targetPlatform.useLLVM or false) then
"-isystem ${libcxx}/include/c++/v1"
else "";

4
pkgs/development/compilers/llvm/8/compiler-rt.nix
View file

@ -55,9 +55,9 @@ stdenv.mkDerivation rec {
# Hack around weird upsream RPATH bug
postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
ln -s "$out/lib"/*/* "$out/lib"
'' + stdenv.lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
'' + stdenv.lib.optionalString (stdenv.hostPlatform.useLLVM or false) ''
ln -s $out/lib/*/clang_rt.crtbegin-*.o $out/lib/crtbegin.o
ln -s $out/lib/*/cclang_rt.crtend-*.o $out/lib/crtend.o
ln -s $out/lib/*/clang_rt.crtend-*.o $out/lib/crtend.o
ln -s $out/lib/*/clang_rt.crtbegin_shared-*.o $out/lib/crtbeginS.o
ln -s $out/lib/*/clang_rt.crtend_shared-*.o $out/lib/crtendS.o
'';

72
pkgs/development/compilers/llvm/8/default.nix
View file

@ -23,7 +23,7 @@ let
ln -s "${cc}/lib/clang/${release_version}/include" "$rsrc"
ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && tools.clang-unwrapped ? gcc) ''
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && tools.clang-unwrapped ? gcc && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${tools.clang-unwrapped.gcc}" >> $out/nix-support/cc-cflags
'';
in {
@ -78,48 +78,78 @@ let
lldb = callPackage ./lldb.nix {};
# 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
# doesn’t support like LLVM. Probably we should move to some other
# file.
bintools = callPackage ./bintools.nix {};
lldClang = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = targetLlvmLibraries.libcxx;
bintools = wrapBintoolsWith {
inherit (tools) bintools;
};
extraPackages = [
# targetLlvmLibraries.libcxx
# targetLlvmLibraries.libcxxabi
targetLlvmLibraries.libcxx
targetLlvmLibraries.libcxxabi
targetLlvmLibraries.compiler-rt
];
extraBuildCommands = ''
echo "-target ${stdenv.targetPlatform.config} -rtlib=compiler-rt" >> $out/nix-support/cc-cflags
echo "-target ${stdenv.targetPlatform.config}" >> $out/nix-support/cc-cflags
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
'' + mkExtraBuildCommands cc;
};
lldClangNoLibcxx = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null;
bintools = wrapBintoolsWith {
inherit (tools) bintools;
};
extraPackages = [
targetLlvmLibraries.compiler-rt
];
extraBuildCommands = ''
echo "-target ${stdenv.targetPlatform.config}" >> $out/nix-support/cc-cflags
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;
};
lldClangNoLibc = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null;
bintools = wrapBintoolsWith {
inherit (tools) bintools;
libc = null;
};
extraPackages = [
# targetLlvmLibraries.libcxx
# targetLlvmLibraries.libcxxabi
targetLlvmLibraries.compiler-rt
];
extraBuildCommands = ''
echo "-target ${stdenv.targetPlatform.config} -rtlib=compiler-rt" >> $out/nix-support/cc-cflags
echo "-target ${stdenv.targetPlatform.config}" >> $out/nix-support/cc-cflags
echo "-rtlib=compiler-rt" >> $out/nix-support/cc-cflags
echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
'' + mkExtraBuildCommands cc;
};
lldClangNoCompilerRt = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null;
bintools = wrapBintoolsWith {
inherit (tools) bintools;
libc = null;
};
extraPackages = [ ];
extraBuildCommands = ''
echo "-nostartfiles -target ${stdenv.targetPlatform.config}" >> $out/nix-support/cc-cflags
echo "-nostartfiles" >> $out/nix-support/cc-cflags
echo "-target ${stdenv.targetPlatform.config}" >> $out/nix-support/cc-cflags
'';
};
@ -129,21 +159,33 @@ let
callPackage = newScope (libraries // buildLlvmTools // { inherit stdenv cmake libxml2 python isl release_version version fetch; });
in {
compiler-rt = callPackage ./compiler-rt.nix {
stdenv = if stdenv.hostPlatform.useLLVM or false
then overrideCC stdenv buildLlvmTools.lldClangNoCompilerRt
else stdenv;
};
compiler-rt = callPackage ./compiler-rt.nix ({} //
(stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) {
stdenv = overrideCC stdenv buildLlvmTools.lldClangNoCompilerRt;
}));
stdenv = overrideCC stdenv buildLlvmTools.clang;
libcxxStdenv = overrideCC stdenv buildLlvmTools.libcxxClang;
libcxx = callPackage ./libc++ {};
libcxx = callPackage ./libc++ ({} //
(stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) {
stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx;
}));
libcxxabi = callPackage ./libc++abi.nix {};
libcxxabi = callPackage ./libc++abi.nix ({} //
(stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) {
stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx;
libunwind = libraries.libunwind;
}));
openmp = callPackage ./openmp.nix {};
libunwind = callPackage ./libunwind.nix ({} //
(stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) {
stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx;
}));
});
in { inherit tools libraries; } // libraries // tools

3
pkgs/development/compilers/llvm/8/libc++/default.nix
View file

@ -30,7 +30,8 @@ stdenv.mkDerivation rec {
"-DLIBCXX_LIBCXXABI_LIB_PATH=${libcxxabi}/lib"
"-DLIBCXX_LIBCPPABI_VERSION=2"
"-DLIBCXX_CXX_ABI=libcxxabi"
] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl "-DLIBCXX_HAS_MUSL_LIBC=1";
] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl "-DLIBCXX_HAS_MUSL_LIBC=1"
++ stdenv.lib.optional (stdenv.hostPlatform.useLLVM or false) "-DLIBCXX_USE_COMPILER_RT=ON";
enableParallelBuilding = true;

7
pkgs/development/compilers/llvm/8/libc++abi.nix
View file

@ -8,10 +8,15 @@ stdenv.mkDerivation {
nativeBuildInputs = [ cmake ];
buildInputs = stdenv.lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD) libunwind;
cmakeFlags = stdenv.lib.optionals (stdenv.hostPlatform.useLLVM or false) [
"-DLLVM_ENABLE_LIBCXX=ON"
"-DLIBCXXABI_USE_LLVM_UNWINDER=ON"
];
postUnpack = ''
unpackFile ${libcxx.src}
unpackFile ${llvm.src}
export cmakeFlags="-DLLVM_PATH=$PWD/$(ls -d llvm-*) -DLIBCXXABI_LIBCXX_PATH=$PWD/$(ls -d libcxx-*)"
cmakeFlags+=" -DLLVM_PATH=$PWD/$(ls -d llvm-*) -DLIBCXXABI_LIBCXX_PATH=$PWD/$(ls -d libcxx-*)"
'' + stdenv.lib.optionalString stdenv.isDarwin ''
export TRIPLE=x86_64-apple-darwin
'' + stdenv.lib.optionalString stdenv.hostPlatform.isMusl ''

22
pkgs/development/compilers/llvm/8/libunwind.nix Normal file
View file

@ -0,0 +1,22 @@
{ stdenv, version, fetch, cmake, libcxx, fetchpatch }:
stdenv.mkDerivation {
name = "libunwind-${version}";
src = fetch "libunwind" "0q7ndlldid9wchnny0a936llwxj7zgb9gxp46wjjxvwwkik3l97z";
nativeBuildInputs = [ cmake ];
patches = [
(fetchpatch {
url = "https://github.com/llvm-mirror/libunwind/commit/34a45c630d4c79af403661d267db42fbe7de1178.patch";
sha256 = "0n0pv6jvcky8pn3srhrf9x5kbnd0d2kia9xlx2g590f5q0bgwfhv";
})
(fetchpatch {
url = "https://github.com/llvm-mirror/libunwind/commit/e050272d2eb57eb4e56a37b429a61df2ebb8aa3e.patch";
sha256 = "1sxyx5xnax8k713jjcxgq3jq3cpnxygs2rcdf5vfja0f2k9jzldl";
})
];
enableParallelBuilding = true;
}

3
pkgs/development/libraries/kerberos/krb5.nix
View file

@ -39,8 +39,9 @@ stdenv.mkDerivation rec {
++ optional (!libOnly) yacc
# Provides the mig command used by the build scripts
++ optional stdenv.isDarwin bootstrap_cmds;
buildInputs = [ openssl ]
++ optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.libc != "bionic") [ keyutils ]
++ optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.libc != "bionic" && !(stdenv.hostPlatform.useLLVM or false)) [ keyutils ]
++ optionals (!libOnly) [ openldap libedit ];
preConfigure = "cd ./src";

2
pkgs/stdenv/cross/default.nix
View file

@ -55,7 +55,7 @@ in lib.init bootStages ++ [
else if crossSystem.useAndroidPrebuilt or false
then buildPackages."androidndkPkgs_${crossSystem.ndkVer}".clang
else if crossSystem.useLLVM or false
then buildPackages.llvmPackages_7.lldClang
then buildPackages.llvmPackages_8.lldClang
else buildPackages.gcc;
extraNativeBuildInputs = old.extraNativeBuildInputs

2
pkgs/top-level/all-packages.nix
View file

@ -6989,7 +6989,7 @@ in
crossLibcStdenv = overrideCC stdenv
(if stdenv.targetPlatform.useLLVM or false
then buildPackages.llvmPackages_7.lldClangNoLibc
then buildPackages.llvmPackages_8.lldClangNoLibc
else buildPackages.gccCrossStageStatic);
# The GCC used to build libc for the target platform. Normal gccs will be