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genodepkgs
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overlay: LLVM 8 -> 11

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hybda
Emery Hemingway 3 years ago
parent 28ed464f13
commit 8aff4142c9
29 changed files with 3025 additions and 3 deletions
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6
flake.lock
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@ -18,11 +18,11 @@
},
"nixpkgs": {
"locked": {
"lastModified": 1604174028,
"narHash": "sha256-b/AMdA8G3JIgErvqNJD0QwiqeD2LWw+aVFLlL9VQK7Y=",
"lastModified": 1605706415,
"narHash": "sha256-TNMK7m95qrHyauJAz5b6FonwMFZvMl75GL/Zpk7FMSE=",
"owner": "ehmry",
"repo": "nixpkgs",
"rev": "098487ccb89e3771f4a63a3b2faf500c4002f65e",
"rev": "1f87da9eaa90afacc256f842e05e1111aa03ffa1",
"type": "github"
},
"original": {

9
overlay/default.nix
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@ -103,6 +103,15 @@ in {
targetLlvmLibraries = targetPackages.llvmPackages_8.libraries;
});
llvmPackages_11 = callPackage ./llvm-11 ({
inherit (stdenvAdapters) overrideCC;
buildLlvmTools = buildPackages.llvmPackages_11.tools;
targetLlvmLibraries = targetPackages.llvmPackages_11.libraries;
inherit (final.genodePackages.genodeSources) genodeBase;
} // stdenv.lib.optionalAttrs (stdenv.hostPlatform.isi686 && buildPackages.stdenv.cc.isGNU) {
stdenv = gcc7Stdenv;
});
openssl = overrideHostAttrs openssl (attrs: {
outputs = [ "out" ]
++ builtins.filter (x: x != "bin" && x != "out") attrs.outputs;

29
overlay/llvm-11/bintools.nix
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@ -0,0 +1,29 @@
{ runCommand, stdenv, llvm, lld, version }:
let
prefix =
if stdenv.hostPlatform != stdenv.targetPlatform
then "${stdenv.targetPlatform.config}-"
else "";
in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
mkdir -p $out/bin
for prog in ${lld}/bin/*; do
ln -s $prog $out/bin/${prefix}$(basename $prog)
done
for prog in ${llvm}/bin/*; do
ln -sf $prog $out/bin/${prefix}$(basename $prog)
done
ln -s ${llvm}/bin/llvm-ar $out/bin/${prefix}ar
ln -s ${llvm}/bin/llvm-as $out/bin/${prefix}as
ln -s ${llvm}/bin/llvm-dwp $out/bin/${prefix}dwp
ln -s ${llvm}/bin/llvm-nm $out/bin/${prefix}nm
ln -s ${llvm}/bin/llvm-objcopy $out/bin/${prefix}objcopy
ln -s ${llvm}/bin/llvm-objdump $out/bin/${prefix}objdump
ln -s ${llvm}/bin/llvm-ranlib $out/bin/${prefix}ranlib
ln -s ${llvm}/bin/llvm-readelf $out/bin/${prefix}readelf
ln -s ${llvm}/bin/llvm-size $out/bin/${prefix}size
ln -s ${llvm}/bin/llvm-strip $out/bin/${prefix}strip
ln -s ${lld}/bin/lld $out/bin/${prefix}ld
''

117
overlay/llvm-11/clang/default.nix
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@ -0,0 +1,117 @@
{ stdenv, fetch, cmake, libxml2, llvm, version, clang-tools-extra_src, python3, lld
, fixDarwinDylibNames
, enableManpages ? false
}:
let
self = stdenv.mkDerivation ({
pname = "clang";
inherit version;
src = fetch "clang" "02ajkij85966vd150iy246mv16dsaph1kfi0y8wnncp8w6nar5hg";
inherit clang-tools-extra_src;
unpackPhase = ''
unpackFile $src
mv clang-${version}* clang
sourceRoot=$PWD/clang
unpackFile ${clang-tools-extra_src}
mv clang-tools-extra-* $sourceRoot/tools/extra
'';
nativeBuildInputs = [ cmake python3 lld ]
++ stdenv.lib.optional enableManpages python3.pkgs.sphinx
++ stdenv.lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
buildInputs = [ libxml2 llvm ];
cmakeFlags = [
"-DCMAKE_CXX_FLAGS=-std=c++14"
"-DCLANGD_BUILD_XPC=OFF"
] ++ stdenv.lib.optionals enableManpages [
"-DCLANG_INCLUDE_DOCS=ON"
"-DLLVM_ENABLE_SPHINX=ON"
"-DSPHINX_OUTPUT_MAN=ON"
"-DSPHINX_OUTPUT_HTML=OFF"
"-DSPHINX_WARNINGS_AS_ERRORS=OFF"
];
patches = [
./purity.patch
# https://reviews.llvm.org/D51899
./genode.patch
];
postPatch = ''
sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
-e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
lib/Driver/ToolChains/*.cpp
# Patch for standalone doc building
sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
'' + stdenv.lib.optionalString stdenv.hostPlatform.isMusl ''
sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
'' + stdenv.lib.optionalString stdenv.hostPlatform.isDarwin ''
substituteInPlace tools/extra/clangd/CMakeLists.txt \
--replace "NOT HAVE_CXX_ATOMICS64_WITHOUT_LIB" FALSE
'';
outputs = [ "out" "lib" "python" ];
# Clang expects to find LLVMgold in its own prefix
postInstall = ''
if [ -e ${llvm}/lib/LLVMgold.so ]; then
ln -sv ${llvm}/lib/LLVMgold.so $out/lib
fi
ln -sv $out/bin/clang $out/bin/cpp
# Move libclang to 'lib' output
moveToOutput "lib/libclang.*" "$lib"
moveToOutput "lib/libclang-cpp.*" "$lib"
substituteInPlace $out/lib/cmake/clang/ClangTargets-release.cmake \
--replace "\''${_IMPORT_PREFIX}/lib/libclang." "$lib/lib/libclang." \
--replace "\''${_IMPORT_PREFIX}/lib/libclang-cpp." "$lib/lib/libclang-cpp."
mkdir -p $python/bin $python/share/clang/
mv $out/bin/{git-clang-format,scan-view} $python/bin
if [ -e $out/bin/set-xcode-analyzer ]; then
mv $out/bin/set-xcode-analyzer $python/bin
fi
mv $out/share/clang/*.py $python/share/clang
rm $out/bin/c-index-test
'';
enableParallelBuilding = true;
passthru = {
isClang = true;
inherit llvm;
};
meta = {
description = "A c, c++, objective-c, and objective-c++ frontend for the llvm compiler";
homepage = "https://llvm.org/";
license = stdenv.lib.licenses.ncsa;
platforms = stdenv.lib.platforms.all;
};
} // stdenv.lib.optionalAttrs enableManpages {
pname = "clang-manpages";
buildPhase = ''
make docs-clang-man
'';
installPhase = ''
mkdir -p $out/share/man/man1
# Manually install clang manpage
cp docs/man/*.1 $out/share/man/man1/
'';
outputs = [ "out" ];
doCheck = false;
meta.description = "man page for Clang ${version}";
});
in self

539
overlay/llvm-11/clang/genode.patch
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@ -0,0 +1,539 @@
diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index 966cb907b7e2..5bcd5093be7d 100644
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -2709,6 +2709,7 @@ def nolibc : Flag<["-"], "nolibc">;
def nomultidefs : Flag<["-"], "nomultidefs">;
def nopie : Flag<["-"], "nopie">;
def no_pie : Flag<["-"], "no-pie">, Alias<nopie>;
+def noposix : Flag<["-"], "noposix">;
def noprebind : Flag<["-"], "noprebind">;
def noprofilelib : Flag<["-"], "noprofilelib">;
def noseglinkedit : Flag<["-"], "noseglinkedit">;
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 965f273892bd..7a22f90d3652 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -142,6 +142,8 @@ TargetInfo *AllocateTarget(const llvm::Triple &Triple,
return new FreeBSDTargetInfo<AArch64leTargetInfo>(Triple, Opts);
case llvm::Triple::Fuchsia:
return new FuchsiaTargetInfo<AArch64leTargetInfo>(Triple, Opts);
+ case llvm::Triple::Genode:
+ return new GenodeTargetInfo<AArch64leTargetInfo>(Triple, Opts);
case llvm::Triple::Linux:
return new LinuxTargetInfo<AArch64leTargetInfo>(Triple, Opts);
case llvm::Triple::NetBSD:
@@ -186,6 +188,8 @@ TargetInfo *AllocateTarget(const llvm::Triple &Triple,
return new LinuxTargetInfo<ARMleTargetInfo>(Triple, Opts);
case llvm::Triple::FreeBSD:
return new FreeBSDTargetInfo<ARMleTargetInfo>(Triple, Opts);
+ case llvm::Triple::Genode:
+ return new GenodeTargetInfo<ARMleTargetInfo>(Triple, Opts);
case llvm::Triple::NetBSD:
return new NetBSDTargetInfo<ARMleTargetInfo>(Triple, Opts);
case llvm::Triple::OpenBSD:
@@ -485,6 +489,8 @@ TargetInfo *AllocateTarget(const llvm::Triple &Triple,
return new FreeBSDTargetInfo<X86_32TargetInfo>(Triple, Opts);
case llvm::Triple::Fuchsia:
return new FuchsiaTargetInfo<X86_32TargetInfo>(Triple, Opts);
+ case llvm::Triple::Genode:
+ return new GenodeI386TargetInfo(Triple, Opts);
case llvm::Triple::KFreeBSD:
return new KFreeBSDTargetInfo<X86_32TargetInfo>(Triple, Opts);
case llvm::Triple::Minix:
@@ -544,6 +550,8 @@ TargetInfo *AllocateTarget(const llvm::Triple &Triple,
return new FreeBSDTargetInfo<X86_64TargetInfo>(Triple, Opts);
case llvm::Triple::Fuchsia:
return new FuchsiaTargetInfo<X86_64TargetInfo>(Triple, Opts);
+ case llvm::Triple::Genode:
+ return new GenodeTargetInfo<X86_64TargetInfo>(Triple, Opts);
case llvm::Triple::KFreeBSD:
return new KFreeBSDTargetInfo<X86_64TargetInfo>(Triple, Opts);
case llvm::Triple::Solaris:
diff --git a/lib/Basic/Targets/AArch64.cpp b/lib/Basic/Targets/AArch64.cpp
index 25c02cb888c1..8b9a622865cd 100644
--- a/lib/Basic/Targets/AArch64.cpp
+++ b/lib/Basic/Targets/AArch64.cpp
@@ -43,7 +43,7 @@ const Builtin::Info AArch64TargetInfo::BuiltinInfo[] = {
AArch64TargetInfo::AArch64TargetInfo(const llvm::Triple &Triple,
const TargetOptions &Opts)
: TargetInfo(Triple), ABI("aapcs") {
- if (getTriple().isOSOpenBSD()) {
+ if (getTriple().isOSOpenBSD() || getTriple().isOSGenode()) {
Int64Type = SignedLongLong;
IntMaxType = SignedLongLong;
} else {
diff --git a/lib/Basic/Targets/ARM.cpp b/lib/Basic/Targets/ARM.cpp
index 21cfe0107bbb..b02ef0aa0f2f 100644
--- a/lib/Basic/Targets/ARM.cpp
+++ b/lib/Basic/Targets/ARM.cpp
@@ -238,18 +238,19 @@ ARMTargetInfo::ARMTargetInfo(const llvm::Triple &Triple,
HW_FP(0) {
bool IsOpenBSD = Triple.isOSOpenBSD();
bool IsNetBSD = Triple.isOSNetBSD();
+ bool IsGenode = Triple.isOSGenode();
// FIXME: the isOSBinFormatMachO is a workaround for identifying a Darwin-like
// environment where size_t is `unsigned long` rather than `unsigned int`
PtrDiffType = IntPtrType =
(Triple.isOSDarwin() || Triple.isOSBinFormatMachO() || IsOpenBSD ||
- IsNetBSD)
+ IsNetBSD || IsGenode)
? SignedLong
: SignedInt;
SizeType = (Triple.isOSDarwin() || Triple.isOSBinFormatMachO() || IsOpenBSD ||
- IsNetBSD)
+ IsNetBSD || IsGenode)
? UnsignedLong
: UnsignedInt;
diff --git a/lib/Basic/Targets/OSTargets.h b/lib/Basic/Targets/OSTargets.h
index 2a9e4f91d478..e453358027f0 100644
--- a/lib/Basic/Targets/OSTargets.h
+++ b/lib/Basic/Targets/OSTargets.h
@@ -296,7 +296,7 @@ protected:
Builder.defineMacro("__HAIKU__");
Builder.defineMacro("__ELF__");
DefineStd(Builder, "unix", Opts);
- if (this->HasFloat128)
+ if (this->HasFloat128)
Builder.defineMacro("__FLOAT128__");
}
@@ -820,6 +820,40 @@ public:
}
};
+// Genode Target
+template <typename Target>
+class LLVM_LIBRARY_VISIBILITY GenodeTargetInfo : public OSTargetInfo<Target> {
+protected:
+ void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
+ MacroBuilder &Builder) const override {
+ Builder.defineMacro("__GENODE__");
+ DefineStd(Builder, "unix", Opts);
+ Builder.defineMacro("__ELF__");
+ if (Opts.POSIXThreads)
+ Builder.defineMacro("_REENTRANT");
+ if (this->HasFloat128)
+ Builder.defineMacro("__FLOAT128__");
+ }
+
+public:
+ GenodeTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+ : OSTargetInfo<Target>(Triple, Opts) {
+ this->IntMaxType = TargetInfo::SignedLongLong;
+ this->Int64Type = TargetInfo::SignedLongLong;
+ this->SizeType = TargetInfo::UnsignedLong;
+ this->TLSSupported = false;
+ switch (Triple.getArch()) {
+ default:
+ break;
+ case llvm::Triple::x86:
+ case llvm::Triple::x86_64:
+ this->HasFloat128 = true;
+ break;
+ }
+
+ }
+};
+
// WebAssembly target
template <typename Target>
class LLVM_LIBRARY_VISIBILITY WebAssemblyOSTargetInfo
diff --git a/lib/Basic/Targets/X86.h b/lib/Basic/Targets/X86.h
index 72a01d2514c2..ae7b01b0d9a7 100644
--- a/lib/Basic/Targets/X86.h
+++ b/lib/Basic/Targets/X86.h
@@ -447,6 +447,18 @@ public:
}
};
+class LLVM_LIBRARY_VISIBILITY GenodeI386TargetInfo
+ : public GenodeTargetInfo<X86_32TargetInfo> {
+public:
+ GenodeI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+ : GenodeTargetInfo<X86_32TargetInfo>(Triple, Opts) {
+ SizeType = UnsignedLong;
+ IntPtrType = SignedLong;
+ PtrDiffType = SignedLong;
+ }
+};
+
+
class LLVM_LIBRARY_VISIBILITY DarwinI386TargetInfo
: public DarwinTargetInfo<X86_32TargetInfo> {
public:
diff --git a/lib/Driver/CMakeLists.txt b/lib/Driver/CMakeLists.txt
index 9463ca5c109d..5ae757f99e2f 100644
--- a/lib/Driver/CMakeLists.txt
+++ b/lib/Driver/CMakeLists.txt
@@ -49,6 +49,7 @@ add_clang_library(clangDriver
ToolChains/Flang.cpp
ToolChains/FreeBSD.cpp
ToolChains/Fuchsia.cpp
+ ToolChains/Genode.cpp
ToolChains/Gnu.cpp
ToolChains/Haiku.cpp
ToolChains/HIP.cpp
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index ece8222dcf24..4ca793af6c81 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -22,6 +22,7 @@
#include "ToolChains/DragonFly.h"
#include "ToolChains/FreeBSD.h"
#include "ToolChains/Fuchsia.h"
+#include "ToolChains/Genode.h"
#include "ToolChains/Gnu.h"
#include "ToolChains/HIP.h"
#include "ToolChains/Haiku.h"
@@ -4951,6 +4952,9 @@ const ToolChain &Driver::getToolChain(const ArgList &Args,
case llvm::Triple::Solaris:
TC = std::make_unique<toolchains::Solaris>(*this, Target, Args);
break;
+ case llvm::Triple::Genode:
+ TC = std::make_unique<toolchains::Genode>(*this, Target, Args);
+ break;
case llvm::Triple::AMDHSA:
TC = std::make_unique<toolchains::ROCMToolChain>(*this, Target, Args);
break;
diff --git a/lib/Driver/ToolChains/Arch/AArch64.cpp b/lib/Driver/ToolChains/Arch/AArch64.cpp
index dd4545d6c48f..22ec56518046 100644
--- a/lib/Driver/ToolChains/Arch/AArch64.cpp
+++ b/lib/Driver/ToolChains/Arch/AArch64.cpp
@@ -373,7 +373,7 @@ fp16_fml_fallthrough:
options::OPT_munaligned_access)) {
if (A->getOption().matches(options::OPT_mno_unaligned_access))
Features.push_back("+strict-align");
- } else if (Triple.isOSOpenBSD())
+ } else if (Triple.isOSOpenBSD() || Triple.isOSGenode())
Features.push_back("+strict-align");
if (Args.hasArg(options::OPT_ffixed_x1))
diff --git a/lib/Driver/ToolChains/Arch/ARM.cpp b/lib/Driver/ToolChains/Arch/ARM.cpp
index afe896b4a65b..f93dd30beb98 100644
--- a/lib/Driver/ToolChains/Arch/ARM.cpp
+++ b/lib/Driver/ToolChains/Arch/ARM.cpp
@@ -587,7 +587,7 @@ fp16_fml_fallthrough:
if (VersionNum < 6 ||
Triple.getSubArch() == llvm::Triple::SubArchType::ARMSubArch_v6m)
Features.push_back("+strict-align");
- } else if (Triple.isOSLinux() || Triple.isOSNaCl()) {
+ } else if (Triple.isOSLinux() || Triple.isOSNaCl() || Triple.isOSGenode()) {
if (VersionNum < 7)
Features.push_back("+strict-align");
} else
diff --git a/lib/Driver/ToolChains/Clang.cpp b/lib/Driver/ToolChains/Clang.cpp
index af4bcf951e6c..c96b192c7e09 100644
--- a/lib/Driver/ToolChains/Clang.cpp
+++ b/lib/Driver/ToolChains/Clang.cpp
@@ -538,7 +538,7 @@ static bool useFramePointerForTargetByDefault(const ArgList &Args,
break;
}
- if (Triple.isOSNetBSD()) {
+ if (Triple.isOSNetBSD() || Triple.isOSGenode()) {
return !areOptimizationsEnabled(Args);
}
diff --git a/lib/Driver/ToolChains/Genode.cpp b/lib/Driver/ToolChains/Genode.cpp
new file mode 100644
index 000000000000..37151999b7bf
--- /dev/null
+++ b/lib/Driver/ToolChains/Genode.cpp
@@ -0,0 +1,191 @@
+//===--- Genode.h - Genode ToolChain Implementations ------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "Genode.h"
+#include "CommonArgs.h"
+#include "InputInfo.h"
+#include "clang/Driver/Compilation.h"
+#include "clang/Driver/Driver.h"
+#include "clang/Driver/Options.h"
+#include "llvm/Option/ArgList.h"
+
+using namespace clang::driver;
+using namespace clang::driver::toolchains;
+using namespace clang::driver::tools;
+using namespace clang;
+using namespace llvm::opt;
+
+void genode::Linker::ConstructJob(Compilation &C, const JobAction &JA,
+ const InputInfo &Output,
+ const InputInfoList &Inputs,
+ const ArgList &Args,
+ const char *LinkingOutput) const {
+ ArgStringList CmdArgs;
+
+ const auto &TC = static_cast<const toolchains::Genode &>(getToolChain());
+ const auto &D = TC.getDriver();
+
+ if (!D.SysRoot.empty())
+ CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
+
+ // Explicitly set the linker emulation for platforms that might not
+ // be the default emulation for the linker.
+ switch (TC.getArch()) {
+ case llvm::Triple::x86:
+ CmdArgs.push_back("-melf_i386");
+ break;
+ case llvm::Triple::x86_64:
+ CmdArgs.push_back("-melf_x86_64");
+ break;
+ case llvm::Triple::riscv32:
+ CmdArgs.push_back("-melf32lriscv");
+ break;
+ case llvm::Triple::riscv64:
+ CmdArgs.push_back("-melf64lriscv");
+ break;
+ default:
+ break;
+ }
+
+ CmdArgs.push_back("--eh-frame-hdr");
+ CmdArgs.push_back("--gc-sections");
+ CmdArgs.push_back("-zmax-page-size=0x1000");
+
+ CmdArgs.push_back("-Ttext=0x01000000");
+
+ Args.AddAllArgs(CmdArgs, options::OPT_L);
+ TC.AddFilePathLibArgs(Args, CmdArgs);
+ Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
+ Args.AddAllArgs(CmdArgs, options::OPT_e);
+ Args.AddAllArgs(CmdArgs, options::OPT_s);
+ Args.AddAllArgs(CmdArgs, options::OPT_t);
+ Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
+
+ if (Args.hasArg(options::OPT_static)) {
+ CmdArgs.push_back("-Bstatic");
+ } else {
+ if (Args.hasArg(options::OPT_shared)) {
+ CmdArgs.push_back(Args.MakeArgString("-shared"));
+ CmdArgs.push_back(Args.MakeArgString("-T" + D.SysRoot + "/ld/genode_rel.ld"));
+ } else {
+ CmdArgs.push_back(Args.MakeArgString("-T" + D.SysRoot + "/ld/genode_dyn.ld"));
+ CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + D.SysRoot + "/ld/genode_dyn.dl"));
+ CmdArgs.push_back("--dynamic-linker=ld.lib.so");
+ }
+ if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
+ CmdArgs.push_back("-l:ld.lib.so");
+ }
+ }
+
+ if (Output.isFilename()) {
+ CmdArgs.push_back("-o");
+ CmdArgs.push_back(Output.getFilename());
+ } else {
+ assert(Output.isNothing() && "Invalid output.");
+ }
+
+ AddLinkerInputs(TC, Inputs, Args, CmdArgs, JA);
+
+ if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs, options::OPT_noposix)) {
+ AddRunTimeLibs(TC, D, CmdArgs, Args);
+
+ CmdArgs.push_back("-lc");
+ if (!Args.hasArg(options::OPT_shared)) {
+ CmdArgs.push_back("-lposix");
+ }
+ }
+
+ C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
+ Args.MakeArgString(TC.GetLinkerPath()),
+ CmdArgs, Inputs));
+}
+
+Genode::Genode(const Driver &D, const llvm::Triple &Triple,
+ const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+
+ std::vector<std::string> GenodeExtraTriples;
+ switch (Triple.getArch()) {
+ case llvm::Triple::arm:
+ GenodeExtraTriples.push_back("arm-none-eabi");
+ break;
+ case llvm::Triple::aarch64:
+ GenodeExtraTriples.push_back("aarch64-none-elf");
+ break;
+ case llvm::Triple::x86:
+ case llvm::Triple::x86_64:
+ GenodeExtraTriples.push_back("x86_64-pc-elf");
+ break;
+ case llvm::Triple::riscv64:
+ GenodeExtraTriples.push_back("riscv64-unknown-elf");
+ break;
+ default:
+ break;
+ }
+
+ GCCInstallation.init(Triple, Args, GenodeExtraTriples);
+
+ const std::string MultiarchTriple = getMultiarchTriple(D, Triple, /*SysRoot*/ "");
+ if (GCCInstallation.isValid() &&
+ (Triple.getArch() == llvm::Triple::x86_64 ||
+ Triple.getArch() == llvm::Triple::x86)) {
+
+ path_list MultilibPaths;
+ Generic_GCC::AddMultilibPaths(D, /*SysRoot*/ "", "lib",
+ MultiarchTriple, MultilibPaths);
+
+ auto Suffix = GCCInstallation.getMultilib().gccSuffix();
+ for (auto path: MultilibPaths)
+ addPathIfExists(D, path + Suffix, getFilePaths());
+ } else {
+ Generic_GCC::AddMultilibPaths(D, /*SysRoot*/ "", "lib",
+ MultiarchTriple, getFilePaths());
+ }
+
+ ToolChain::path_list &PPaths = getProgramPaths();
+
+ Generic_GCC::PushPPaths(PPaths);
+
+#ifdef ENABLE_LINKER_BUILD_ID
+ ExtraOpts.push_back("--build-id");
+#endif
+}
+
+void
+Genode::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
+ llvm::opt::ArgStringList &CC1Args) const {
+ // Try generic GCC detection first.
+ if (Generic_GCC::addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args))
+ return;
+
+ if (!GCCInstallation.isValid())
+ return;
+
+ StringRef LibDir = GCCInstallation.getParentLibPath();
+ StringRef TripleStr = GCCInstallation.getTriple().str();
+ const Multilib &Multilib = GCCInstallation.getMultilib();
+ const GCCVersion &Version = GCCInstallation.getVersion();
+
+ const std::string IncludePath = {
+ LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
+ };
+
+ addLibStdCXXIncludePaths(IncludePath, /*Suffix*/ "", TripleStr,
+ /*GCCMultiarchTriple*/ "",
+ /*TargetMultiarchTriple*/ "",
+ Multilib.includeSuffix(), DriverArgs, CC1Args);
+}
+
+void Genode::addExtraOpts(llvm::opt::ArgStringList &CmdArgs) const {
+ for (const auto &Opt : ExtraOpts)
+ CmdArgs.push_back(Opt.c_str());
+}
+
+Tool *Genode::buildLinker() const {
+ return new tools::genode::Linker(*this);
+}
diff --git a/lib/Driver/ToolChains/Genode.h b/lib/Driver/ToolChains/Genode.h
new file mode 100644
index 000000000000..27e51ca45d9e
--- /dev/null
+++ b/lib/Driver/ToolChains/Genode.h
@@ -0,0 +1,69 @@
+//===--- Genode.h - Genode ToolChain Implementations ------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_GENODE_H
+#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_GENODE_H
+
+#include "Gnu.h"
+#include "clang/Driver/Tool.h"
+#include "clang/Driver/ToolChain.h"
+
+namespace clang {
+namespace driver {
+namespace tools {
+namespace genode {
+class LLVM_LIBRARY_VISIBILITY Linker : public Tool {
+public:
+ Linker(const ToolChain &TC) : Tool("genode::Linker", "linker", TC) {}
+
+ bool hasIntegratedCPP() const override { return false; }
+ bool isLinkJob() const override { return true; }
+
+ void ConstructJob(Compilation &C, const JobAction &JA,
+ const InputInfo &Output, const InputInfoList &Inputs,
+ const llvm::opt::ArgList &TCArgs,
+ const char *LinkingOutput) const override;
+};
+} // end namespace genode
+} // end namespace tools
+
+namespace toolchains {
+
+class LLVM_LIBRARY_VISIBILITY Genode : public Generic_ELF {
+public:
+ Genode(const Driver &D, const llvm::Triple &Triple,
+ const llvm::opt::ArgList &Args);
+
+ bool IsMathErrnoDefault() const override { return false; }
+ bool HasNativeLLVMSupport() const override { return true; }
+ bool isPICDefault() const override { return false; }
+ bool isPIEDefault() const override { return false; }
+ bool isPICDefaultForced() const override { return false; }
+ bool IsIntegratedAssemblerDefault() const override { return true; }
+
+ void
+ addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
+ llvm::opt::ArgStringList &CC1Args) const final;
+
+ bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const override {
+ return true;
+ }
+
+ void addExtraOpts(llvm::opt::ArgStringList &CmdArgs) const override;
+
+ std::vector<std::string> ExtraOpts;
+
+protected:
+ Tool *buildLinker() const override;
+};
+
+} // end namespace toolchains
+} // end namespace driver
+} // end namespace clang
+
+#endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_GENODE_H
diff --git a/lib/Frontend/InitHeaderSearch.cpp b/lib/Frontend/InitHeaderSearch.cpp
index bc31445d6d08..364942eff068 100644
--- a/lib/Frontend/InitHeaderSearch.cpp
+++ b/lib/Frontend/InitHeaderSearch.cpp
@@ -229,6 +229,7 @@ void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple,
case llvm::Triple::PS4:
case llvm::Triple::ELFIAMCU:
case llvm::Triple::Fuchsia:
+ case llvm::Triple::Genode:
break;
case llvm::Triple::Win32:
if (triple.getEnvironment() != llvm::Triple::Cygnus)
@@ -338,6 +339,7 @@ void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple,
case llvm::Triple::NaCl:
case llvm::Triple::ELFIAMCU:
case llvm::Triple::Fuchsia:
+ case llvm::Triple::Genode:
break;
case llvm::Triple::PS4: {
// <isysroot> gets prepended later in AddPath().
diff --git a/test/Driver/genode.c b/test/Driver/genode.c
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/test/Driver/genode.cpp b/test/Driver/genode.cpp
new file mode 100644
index 000000000000..e69de29bb2d1

28
overlay/llvm-11/clang/purity.patch
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@ -0,0 +1,28 @@
From 4add81bba40dcec62c4ea4481be8e35ac53e89d8 Mon Sep 17 00:00:00 2001
From: Will Dietz <w@wdtz.org>
Date: Thu, 18 May 2017 11:56:12 -0500
Subject: [PATCH] "purity" patch for 5.0
---
lib/Driver/ToolChains/Gnu.cpp | 7 -------
1 file changed, 7 deletions(-)
diff --git a/lib/Driver/ToolChains/Gnu.cpp b/lib/Driver/ToolChains/Gnu.cpp
index fe3c0191bb..c6a482bece 100644
--- a/lib/Driver/ToolChains/Gnu.cpp
+++ b/lib/Driver/ToolChains/Gnu.cpp
@@ -487,12 +487,6 @@ void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
if (!IsStatic) {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
-
- if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) {
- CmdArgs.push_back("-dynamic-linker");
- CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) +
- ToolChain.getDynamicLinker(Args)));
- }
}
CmdArgs.push_back("-o");
--
2.11.0

23
overlay/llvm-11/compiler-rt-X86-support-extension.patch
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@ -0,0 +1,23 @@
diff --git a/lib/builtins/CMakeLists.txt b/lib/builtins/CMakeLists.txt
index 3a66dd9c3fb..7efc85d9f9f 100644
--- a/lib/builtins/CMakeLists.txt
+++ b/lib/builtins/CMakeLists.txt
@@ -301,6 +301,10 @@ if (NOT MSVC)
i386/umoddi3.S
)
+ set(i486_SOURCES ${i386_SOURCES})
+ set(i586_SOURCES ${i386_SOURCES})
+ set(i686_SOURCES ${i386_SOURCES})
+
if (WIN32)
set(i386_SOURCES
${i386_SOURCES}
@@ -608,6 +612,7 @@ else ()
endif()
foreach (arch ${BUILTIN_SUPPORTED_ARCH})
+ message("arch: ${arch}")
if (CAN_TARGET_${arch})
# For ARM archs, exclude any VFP builtins if VFP is not supported
if (${arch} MATCHES "^(arm|armhf|armv7|armv7s|armv7k|armv7m|armv7em)$")

32
overlay/llvm-11/compiler-rt-armv7l.patch
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@ -0,0 +1,32 @@
diff -ur compiler-rt-10.0.0.src/cmake/builtin-config-ix.cmake compiler-rt-10.0.0.src-patched/cmake/builtin-config-ix.cmake
--- compiler-rt-10.0.0.src/cmake/builtin-config-ix.cmake 2020-03-24 00:01:02.000000000 +0900
+++ compiler-rt-10.0.0.src-patched/cmake/builtin-config-ix.cmake 2020-05-10 03:42:00.883450706 +0900
@@ -24,7 +24,7 @@
set(ARM64 aarch64)
-set(ARM32 arm armhf armv6m armv7m armv7em armv7 armv7s armv7k)
+set(ARM32 arm armhf armv6m armv7m armv7em armv7 armv7s armv7k armv7l)
set(HEXAGON hexagon)
set(X86 i386)
set(X86_64 x86_64)
diff -ur compiler-rt-10.0.0.src/lib/builtins/CMakeLists.txt compiler-rt-10.0.0.src-patched/lib/builtins/CMakeLists.txt
--- compiler-rt-10.0.0.src/lib/builtins/CMakeLists.txt 2020-03-24 00:01:02.000000000 +0900
+++ compiler-rt-10.0.0.src-patched/lib/builtins/CMakeLists.txt 2020-05-10 03:44:49.468579650 +0900
@@ -474,6 +474,7 @@
set(armv7_SOURCES ${arm_SOURCES})
set(armv7s_SOURCES ${arm_SOURCES})
set(armv7k_SOURCES ${arm_SOURCES})
+set(armv7l_SOURCES ${arm_SOURCES})
set(arm64_SOURCES ${aarch64_SOURCES})
# macho_embedded archs
@@ -595,7 +596,7 @@
foreach (arch ${BUILTIN_SUPPORTED_ARCH})
if (CAN_TARGET_${arch})
# For ARM archs, exclude any VFP builtins if VFP is not supported
- if (${arch} MATCHES "^(arm|armhf|armv7|armv7s|armv7k|armv7m|armv7em)$")
+ if (${arch} MATCHES "^(arm|armhf|armv7|armv7s|armv7k|armv7l|armv7m|armv7em)$")
string(REPLACE ";" " " _TARGET_${arch}_CFLAGS "${TARGET_${arch}_CFLAGS}")
check_compile_definition(__VFP_FP__ "${CMAKE_C_FLAGS} ${_TARGET_${arch}_CFLAGS}" COMPILER_RT_HAS_${arch}_VFP)
if(NOT COMPILER_RT_HAS_${arch}_VFP)

33
overlay/llvm-11/compiler-rt-codesign.patch
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@ -0,0 +1,33 @@
From 3dec5f3475a26aeb4678627795c4b67c6b7b4785 Mon Sep 17 00:00:00 2001
From: Will Dietz <w@wdtz.org>
Date: Tue, 19 Sep 2017 13:13:06 -0500
Subject: [PATCH] remove codesign use on Apple, disable ios sim testing that
needs it
---
cmake/Modules/AddCompilerRT.cmake | 8 ------
test/asan/CMakeLists.txt | 52 ---------------------------------------
test/tsan/CMakeLists.txt | 47 -----------------------------------
3 files changed, 107 deletions(-)
diff --git a/cmake/Modules/AddCompilerRT.cmake b/cmake/Modules/AddCompilerRT.cmake
index bc5fb9ff7..b64eb4246 100644
--- a/cmake/Modules/AddCompilerRT.cmake
+++ b/cmake/Modules/AddCompilerRT.cmake
@@ -210,14 +210,6 @@ function(add_compiler_rt_runtime name type)
set_target_properties(${libname} PROPERTIES IMPORT_PREFIX "")
set_target_properties(${libname} PROPERTIES IMPORT_SUFFIX ".lib")
endif()
- if(APPLE)
- # Ad-hoc sign the dylibs
- add_custom_command(TARGET ${libname}
- POST_BUILD
- COMMAND codesign --sign - $<TARGET_FILE:${libname}>
- WORKING_DIRECTORY ${COMPILER_RT_LIBRARY_OUTPUT_DIR}
- )
- endif()
endif()
install(TARGETS ${libname}
ARCHIVE DESTINATION ${COMPILER_RT_LIBRARY_INSTALL_DIR}
2.14.1

90
overlay/llvm-11/compiler-rt.nix
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@ -0,0 +1,90 @@
{ stdenv, version, fetch, cmake, python3, llvm, libcxxabi }:
let
useLLVM = stdenv.hostPlatform.useLLVM or false;
bareMetal = stdenv.hostPlatform.parsed.kernel.name == "none";
inherit (stdenv.hostPlatform) isMusl;
in
stdenv.mkDerivation rec {
pname = "compiler-rt";
inherit version;
src = fetch pname "0d5j5l8phwqjjscmk8rmqn0i2i0abl537gdbkagl8fjpzy1gyjip";
nativeBuildInputs = [ cmake python3 llvm ];
buildInputs = stdenv.lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
NIX_CFLAGS_COMPILE = [
"-DSCUDO_DEFAULT_OPTIONS=DeleteSizeMismatch=0:DeallocationTypeMismatch=0"
];
cmakeFlags = [
"-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON"
"-DCMAKE_C_COMPILER_TARGET=${stdenv.hostPlatform.config}"
"-DCMAKE_ASM_COMPILER_TARGET=${stdenv.hostPlatform.config}"
] ++ stdenv.lib.optionals (stdenv.isDarwin) [
"-DDARWIN_macosx_OVERRIDE_SDK_VERSION=ON"
] ++ stdenv.lib.optionals (useLLVM || bareMetal || isMusl) [
"-DCOMPILER_RT_BUILD_SANITIZERS=OFF"
"-DCOMPILER_RT_BUILD_XRAY=OFF"
"-DCOMPILER_RT_BUILD_LIBFUZZER=OFF"
"-DCOMPILER_RT_BUILD_PROFILE=OFF"
] ++ stdenv.lib.optionals (useLLVM || bareMetal) [
"-DCMAKE_C_COMPILER_WORKS=ON"
"-DCMAKE_CXX_COMPILER_WORKS=ON"
"-DCOMPILER_RT_BAREMETAL_BUILD=ON"
"-DCMAKE_SIZEOF_VOID_P=${toString (stdenv.hostPlatform.parsed.cpu.bits / 8)}"
] ++ stdenv.lib.optionals (useLLVM) [
"-DCOMPILER_RT_BUILD_BUILTINS=ON"
"-DCMAKE_C_FLAGS=-nodefaultlibs"
#https://stackoverflow.com/questions/53633705/cmake-the-c-compiler-is-not-able-to-compile-a-simple-test-program
"-DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY"
] ++ stdenv.lib.optionals (bareMetal) [
"-DCOMPILER_RT_OS_DIR=baremetal"
];
outputs = [ "out" "dev" ];
patches = [
./compiler-rt-codesign.patch # Revert compiler-rt commit that makes codesign mandatory
./compiler-rt-X86-support-extension.patch # Add support for i486 i586 i686 by reusing i386 config
]# ++ stdenv.lib.optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch
++ stdenv.lib.optional stdenv.hostPlatform.isAarch32 ./compiler-rt-armv7l.patch;
# TSAN requires XPC on Darwin, which we have no public/free source files for. We can depend on the Apple frameworks
# to get it, but they're unfree. Since LLVM is rather central to the stdenv, we patch out TSAN support so that Hydra
# can build this. If we didn't do it, basically the entire nixpkgs on Darwin would have an unfree dependency and we'd
# get no binary cache for the entire platform. If you really find yourself wanting the TSAN, make this controllable by
# a flag and turn the flag off during the stdenv build.
postPatch = stdenv.lib.optionalString (!stdenv.isDarwin) ''
substituteInPlace cmake/builtin-config-ix.cmake \
--replace 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
'' + stdenv.lib.optionalString stdenv.isDarwin ''
substituteInPlace cmake/builtin-config-ix.cmake \
--replace 'set(ARM64 arm64 arm64e)' 'set(ARM64)'
substituteInPlace cmake/config-ix.cmake \
--replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
'' + stdenv.lib.optionalString (useLLVM) ''
substituteInPlace lib/builtins/int_util.c \
--replace "#include <stdlib.h>" ""
substituteInPlace lib/builtins/clear_cache.c \
--replace "#include <assert.h>" ""
substituteInPlace lib/builtins/cpu_model.c \
--replace "#include <assert.h>" ""
'';
# Hack around weird upsream RPATH bug
postInstall = stdenv.lib.optionalString (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isWasm) ''
ln -s "$out/lib"/*/* "$out/lib"
'' + stdenv.lib.optionalString (useLLVM) ''
ln -s $out/lib/*/clang_rt.crtbegin-*.o $out/lib/crtbegin.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
'';
enableParallelBuilding = true;
}

13
overlay/llvm-11/compiler-rt.patch
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@ -0,0 +1,13 @@
diff --git a/lib/builtins/assembly.h b/lib/builtins/assembly.h
index 3f5e59b2544..97d06d6ccd1 100644
--- a/lib/builtins/assembly.h
+++ b/lib/builtins/assembly.h
@@ -45,7 +45,7 @@
#define CONST_SECTION .section .rodata
#if defined(__GNU__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \
- defined(__linux__)
+ defined(__linux__) || defined(__GENODE__)
#define NO_EXEC_STACK_DIRECTIVE .section .note.GNU-stack,"",%progbits
#else
#define NO_EXEC_STACK_DIRECTIVE

595
overlay/llvm-11/crtbegin-and-end.patch
Unescape Escape View File

@ -0,0 +1,595 @@
Get crtbegin and crtend without compiler GCC! PR is at https://reviews.llvm.org/D28791
Index: compiler-rt/CMakeLists.txt
===================================================================
--- compiler-rt/CMakeLists.txt
+++ compiler-rt/CMakeLists.txt
@@ -29,6 +29,8 @@
option(COMPILER_RT_BUILD_BUILTINS "Build builtins" ON)
mark_as_advanced(COMPILER_RT_BUILD_BUILTINS)
+option(COMPILER_RT_BUILD_CRT "Build crtbegin.o/crtend.o" ON)
+mark_as_advanced(COMPILER_RT_BUILD_CRT)
option(COMPILER_RT_BUILD_SANITIZERS "Build sanitizers" ON)
mark_as_advanced(COMPILER_RT_BUILD_SANITIZERS)
option(COMPILER_RT_BUILD_XRAY "Build xray" ON)
Index: compiler-rt/cmake/Modules/AddCompilerRT.cmake
===================================================================
--- compiler-rt/cmake/Modules/AddCompilerRT.cmake
+++ compiler-rt/cmake/Modules/AddCompilerRT.cmake
@@ -132,7 +132,7 @@
# Adds static or shared runtime for a list of architectures and operating
# systems and puts it in the proper directory in the build and install trees.
# add_compiler_rt_runtime(<name>
-# {STATIC|SHARED}
+# {OBJECT|STATIC|SHARED}
# ARCHS <architectures>
# OS <os list>
# SOURCES <source files>
@@ -144,8 +144,8 @@
# PARENT_TARGET <convenience parent target>
# ADDITIONAL_HEADERS <header files>)
function(add_compiler_rt_runtime name type)
- if(NOT type MATCHES "^(STATIC|SHARED)$")
- message(FATAL_ERROR "type argument must be STATIC or SHARED")
+ if(NOT type MATCHES "^(OBJECT|STATIC|SHARED)$")
+ message(FATAL_ERROR "type argument must be OBJECT, STATIC or SHARED")
return()
endif()
cmake_parse_arguments(LIB
@@ -204,7 +204,10 @@
message(FATAL_ERROR "Architecture ${arch} can't be targeted")
return()
endif()
- if(type STREQUAL "STATIC")
+ if(type STREQUAL "OBJECT")
+ set(libname "${name}-${arch}")
+ set(output_name_${libname} ${libname}${COMPILER_RT_OS_SUFFIX})
+ elseif(type STREQUAL "STATIC")
set(libname "${name}-${arch}")
set_output_name(output_name_${libname} ${name} ${arch})
else()
@@ -270,12 +273,34 @@
set(COMPONENT_OPTION COMPONENT ${libname})
endif()
- add_library(${libname} ${type} ${sources_${libname}})
- set_target_compile_flags(${libname} ${extra_cflags_${libname}})
- set_target_link_flags(${libname} ${extra_link_flags_${libname}})
- set_property(TARGET ${libname} APPEND PROPERTY
- COMPILE_DEFINITIONS ${LIB_DEFS})
- set_target_output_directories(${libname} ${output_dir_${libname}})
+ if(type STREQUAL "OBJECT")
+ string(TOUPPER ${CMAKE_BUILD_TYPE} config)
+ get_property(cflags SOURCE ${sources_${libname}} PROPERTY COMPILE_FLAGS)
+ separate_arguments(cflags)
+ add_custom_command(
+ OUTPUT ${output_dir_${libname}}/${libname}.o
+ COMMAND ${CMAKE_C_COMPILER} ${sources_${libname}} ${cflags} ${extra_cflags_${libname}} -c -o ${output_dir_${libname}}/${libname}.o
+ DEPENDS ${sources_${libname}}
+ COMMENT "Building C object ${libname}.o")
+ add_custom_target(${libname} DEPENDS ${output_dir_${libname}}/${libname}.o)
+ install(FILES ${output_dir_${libname}}/${libname}.o
+ DESTINATION ${install_dir_${libname}}
+ ${COMPONENT_OPTION})
+ else()
+ add_library(${libname} ${type} ${sources_${libname}})
+ set_target_compile_flags(${libname} ${extra_cflags_${libname}})
+ set_target_link_flags(${libname} ${extra_link_flags_${libname}})
+ set_property(TARGET ${libname} APPEND PROPERTY
+ COMPILE_DEFINITIONS ${LIB_DEFS})
+ set_target_output_directories(${libname} ${output_dir_${libname}})
+ install(TARGETS ${libname}
+ ARCHIVE DESTINATION ${install_dir_${libname}}
+ ${COMPONENT_OPTION}
+ LIBRARY DESTINATION ${install_dir_${libname}}
+ ${COMPONENT_OPTION}
+ RUNTIME DESTINATION ${install_dir_${libname}}
+ ${COMPONENT_OPTION})
+ endif()
set_target_properties(${libname} PROPERTIES
OUTPUT_NAME ${output_name_${libname}})
set_target_properties(${libname} PROPERTIES FOLDER "Compiler-RT Runtime")
@@ -299,13 +324,6 @@
)
endif()
endif()
- install(TARGETS ${libname}
- ARCHIVE DESTINATION ${install_dir_${libname}}
- ${COMPONENT_OPTION}
- LIBRARY DESTINATION ${install_dir_${libname}}
- ${COMPONENT_OPTION}
- RUNTIME DESTINATION ${install_dir_${libname}}
- ${COMPONENT_OPTION})
# We only want to generate per-library install targets if you aren't using
# an IDE because the extra targets get cluttered in IDEs.
Index: compiler-rt/cmake/config-ix.cmake
===================================================================
--- compiler-rt/cmake/config-ix.cmake
+++ compiler-rt/cmake/config-ix.cmake
@@ -227,6 +227,7 @@
${ARM32} ${ARM64} ${MIPS32} ${MIPS64} ${S390X})
set(ALL_ASAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64}
${MIPS32} ${MIPS64} ${PPC64} ${S390X})
+set(ALL_CRT_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64})
set(ALL_DFSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64})
set(ALL_FUZZER_SUPPORTED_ARCH ${X86_64} ${ARM64})
@@ -474,6 +475,7 @@
SANITIZER_COMMON_SUPPORTED_ARCH)
else()
+ filter_available_targets(CRT_SUPPORTED_ARCH ${ALL_CRT_SUPPORTED_ARCH})
# Architectures supported by compiler-rt libraries.
filter_available_targets(SANITIZER_COMMON_SUPPORTED_ARCH
${ALL_SANITIZER_COMMON_SUPPORTED_ARCH})
@@ -563,6 +565,12 @@
# TODO: Add builtins support.
+if (CRT_SUPPORTED_ARCH AND OS_NAME MATCHES "Linux")
+ set(COMPILER_RT_HAS_CRT TRUE)
+else()
+ set(COMPILER_RT_HAS_CRT FALSE)
+endif()
+
if (COMPILER_RT_HAS_SANITIZER_COMMON AND DFSAN_SUPPORTED_ARCH AND
OS_NAME MATCHES "Linux")
set(COMPILER_RT_HAS_DFSAN TRUE)
Index: compiler-rt/lib/CMakeLists.txt
===================================================================
--- compiler-rt/lib/CMakeLists.txt
+++ compiler-rt/lib/CMakeLists.txt
@@ -17,6 +17,10 @@
add_subdirectory(builtins)
endif()
+if(COMPILER_RT_BUILD_CRT)
+ add_subdirectory(crt)
+endif()
+
function(compiler_rt_build_runtime runtime)
string(TOUPPER ${runtime} runtime_uppercase)
if(COMPILER_RT_HAS_${runtime_uppercase})
Index: compiler-rt/lib/crt/CMakeLists.txt
===================================================================
--- /dev/null
+++ compiler-rt/lib/crt/CMakeLists.txt
@@ -0,0 +1,102 @@
+add_compiler_rt_component(crt)
+
+function(check_cxx_section_exists section output)
+ cmake_parse_arguments(ARG "" "" "SOURCE;FLAGS" ${ARGN})
+ if(NOT ARG_SOURCE)
+ set(ARG_SOURCE "int main() { return 0; }\n")
+ endif()
+
+ string(RANDOM TARGET_NAME)
+ set(TARGET_NAME "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/cmTC_${TARGET_NAME}.dir")
+ file(MAKE_DIRECTORY ${TARGET_NAME})
+
+ file(WRITE "${TARGET_NAME}/CheckSectionExists.c" "${ARG_SOURCE}\n")
+
+ string(REGEX MATCHALL "<[A-Za-z0-9_]*>" substitutions
+ ${CMAKE_C_COMPILE_OBJECT})
+
+ set(try_compile_flags "${ARG_FLAGS}")
+ if(CMAKE_C_COMPILER_ID MATCHES Clang AND CMAKE_C_COMPILER_TARGET)
+ list(APPEND try_compile_flags "-target ${CMAKE_C_COMPILER_TARGET}")
+ endif()
+
+ string(REPLACE ";" " " extra_flags "${try_compile_flags}")
+
+ set(test_compile_command "${CMAKE_C_COMPILE_OBJECT}")
+ foreach(substitution ${substitutions})
+ if(substitution STREQUAL "<CMAKE_C_COMPILER>")
+ string(REPLACE "<CMAKE_C_COMPILER>"
+ "${CMAKE_C_COMPILER}" test_compile_command ${test_compile_command})
+ elseif(substitution STREQUAL "<OBJECT>")
+ string(REPLACE "<OBJECT>" "${TARGET_NAME}/CheckSectionExists.o"
+ test_compile_command ${test_compile_command})
+ elseif(substitution STREQUAL "<SOURCE>")
+ string(REPLACE "<SOURCE>" "${TARGET_NAME}/CheckSectionExists.c"
+ test_compile_command ${test_compile_command})
+ elseif(substitution STREQUAL "<FLAGS>")
+ string(REPLACE "<FLAGS>" "${CMAKE_C_FLAGS} ${extra_flags}"
+ test_compile_command ${test_compile_command})
+ else()
+ string(REPLACE "${substitution}" "" test_compile_command
+ ${test_compile_command})
+ endif()
+ endforeach()
+
+ string(REPLACE " " ";" test_compile_command "${test_compile_command}")
+
+ execute_process(
+ COMMAND ${test_compile_command}
+ RESULT_VARIABLE TEST_RESULT
+ OUTPUT_VARIABLE TEST_OUTPUT
+ ERROR_VARIABLE TEST_ERROR
+ )
+
+ execute_process(
+ COMMAND ${CMAKE_OBJDUMP} -h "${TARGET_NAME}/CheckSectionExists.o"
+ RESULT_VARIABLE CHECK_RESULT
+ OUTPUT_VARIABLE CHECK_OUTPUT
+ ERROR_VARIABLE CHECK_ERROR
+ )
+ string(FIND "${CHECK_OUTPUT}" "${section}" SECTION_FOUND)
+
+ if(NOT SECTION_FOUND EQUAL -1)
+ set(${output} TRUE PARENT_SCOPE)
+ else()
+ set(${output} FALSE PARENT_SCOPE)
+ endif()
+
+ file(REMOVE_RECURSE ${TARGET_NAME})
+endfunction()
+
+check_cxx_section_exists(".init_array" COMPILER_RT_HAS_INITFINI_ARRAY
+ SOURCE "__attribute__((constructor)) void f() {}\nint main() { return 0; }\n")
+
+append_list_if(COMPILER_RT_HAS_INITFINI_ARRAY -DCRT_HAS_INITFINI_ARRAY CRT_CFLAGS)
+append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC CRT_CFLAGS)
+
+foreach(arch ${CRT_SUPPORTED_ARCH})
+ add_compiler_rt_runtime(clang_rt.crtbegin
+ OBJECT
+ ARCHS ${arch}
+ SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/crtbegin.c
+ CFLAGS ${CRT_CFLAGS}
+ PARENT_TARGET crt)
+ add_compiler_rt_runtime(clang_rt.crtbegin_shared
+ OBJECT
+ ARCHS ${arch}
+ SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/crtbegin.c
+ CFLAGS ${CRT_CFLAGS} -DCRT_SHARED
+ PARENT_TARGET crt)
+ add_compiler_rt_runtime(clang_rt.crtend
+ OBJECT
+ ARCHS ${arch}
+ SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/crtend.c
+ CFLAGS ${CRT_CFLAGS}
+ PARENT_TARGET crt)
+ add_compiler_rt_runtime(clang_rt.crtend_shared
+ OBJECT
+ ARCHS ${arch}
+ SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/crtend.c
+ CFLAGS ${CRT_CFLAGS} -DCRT_SHARED
+ PARENT_TARGET crt)
+endforeach()
Index: compiler-rt/lib/crt/crtbegin.c
===================================================================
--- /dev/null
+++ compiler-rt/lib/crt/crtbegin.c
@@ -0,0 +1,108 @@
+/* ===-- crtbegin.c - Start of constructors and destructors ----------------===
+ *
+ * The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include <stddef.h>
+
+__attribute__((visibility("hidden")))
+#ifdef CRT_SHARED
+void *__dso_handle = &__dso_handle;
+#else
+void *__dso_handle = (void *)0;
+#endif
+
+static long __EH_FRAME_LIST__[]
+ __attribute__((section(".eh_frame"), aligned(sizeof(void *)))) = {};
+
+extern void __register_frame_info(const void *, void *) __attribute__((weak));
+extern void *__deregister_frame_info(const void *) __attribute__((weak));
+
+#ifndef CRT_HAS_INITFINI_ARRAY
+typedef void (*fp)(void);
+
+static fp __CTOR_LIST__[]
+ __attribute__((section(".ctors"), aligned(sizeof(fp)), used)) = {(fp)-1};
+extern fp __CTOR_LIST_END__[];
+#endif
+
+#ifdef CRT_SHARED
+extern void __cxa_finalize(void *) __attribute__((weak));
+#endif
+
+static void __attribute__((used)) __do_init() {
+ static _Bool __initialized;
+ if (__builtin_expect(__initialized, 0))
+ return;
+ __initialized = 1;
+
+ static struct { void *p[8]; } __object;
+ if (__register_frame_info)
+ __register_frame_info(__EH_FRAME_LIST__, &__object);
+
+#ifndef CRT_HAS_INITFINI_ARRAY
+ const size_t n = __CTOR_LIST_END__ - __CTOR_LIST__ - 1;
+ for (size_t i = n; i >= 1; i--) __CTOR_LIST__[i]();
+#endif
+}
+
+#ifdef CRT_HAS_INITFINI_ARRAY
+__attribute__((section(".init_array"),
+ used)) static void (*__init)(void) = __do_init;
+#else // CRT_HAS_INITFINI_ARRAY
+#if defined(__i386__) || defined(__x86_64__)
+asm(".pushsection .init,\"ax\",@progbits\n\t"
+ "call " __USER_LABEL_PREFIX__ "__do_init\n\t"
+ ".popsection");
+#elif defined(__arm__)
+asm(".pushsection .init,\"ax\",%progbits\n\t"
+ "bl " __USER_LABEL_PREFIX__ "__do_init\n\t"
+ ".popsection");
+#endif // CRT_HAS_INITFINI_ARRAY
+#endif
+
+#ifndef CRT_HAS_INITFINI_ARRAY
+static fp __DTOR_LIST__[]
+ __attribute__((section(".dtors"), aligned(sizeof(fp)), used)) = {(fp)-1};
+extern fp __DTOR_LIST_END__[];
+#endif
+
+static void __attribute__((used)) __do_fini() {
+ static _Bool __finalized;
+ if (__builtin_expect(__finalized, 0))
+ return;
+ __finalized = 1;
+
+#ifdef CRT_SHARED
+ if (__cxa_finalize)
+ __cxa_finalize(__dso_handle);
+#endif
+
+#ifndef CRT_HAS_INITFINI_ARRAY
+ if (__deregister_frame_info)
+ __deregister_frame_info(__EH_FRAME_LIST__);
+
+ const size_t n = __DTOR_LIST_END__ - __DTOR_LIST__ - 1;
+ for (size_t i = 1; i < n; i++) __DTOR_LIST__[i]();
+#endif
+}
+
+#ifdef CRT_HAS_INITFINI_ARRAY
+__attribute__((section(".fini_array"),
+ used)) static void (*__fini)(void) = __do_fini;
+#else // CRT_HAS_INITFINI_ARRAY
+#if defined(__i386__) || defined(__x86_64__)
+asm(".pushsection .fini,\"ax\",@progbits\n\t"
+ "call " __USER_LABEL_PREFIX__ "__do_fini\n\t"
+ ".popsection");
+#elif defined(__arm__)
+asm(".pushsection .fini,\"ax\",%progbits\n\t"
+ "bl " __USER_LABEL_PREFIX__ "__do_fini\n\t"
+ ".popsection");
+#endif
+#endif // CRT_HAS_INIT_FINI_ARRAY
Index: compiler-rt/lib/crt/crtend.c
===================================================================
--- /dev/null
+++ compiler-rt/lib/crt/crtend.c
@@ -0,0 +1,24 @@
+/* ===-- crtend.c - End of constructors and destructors --------------------===
+ *
+ * The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include <stdint.h>
+
+// Put 4-byte zero which is the length field in FDE at the end as a terminator.
+const int32_t __EH_FRAME_LIST_END__[]
+ __attribute__((section(".eh_frame"), aligned(sizeof(int32_t)),
+ visibility("hidden"), used)) = {0};
+
+#ifndef CRT_HAS_INITFINI_ARRAY
+typedef void (*fp)(void);
+fp __CTOR_LIST_END__[]
+ __attribute__((section(".ctors"), visibility("hidden"), used)) = {0};
+fp __DTOR_LIST_END__[]
+ __attribute__((section(".dtors"), visibility("hidden"), used)) = {0};
+#endif
Index: compiler-rt/test/CMakeLists.txt
===================================================================
--- compiler-rt/test/CMakeLists.txt
+++ compiler-rt/test/CMakeLists.txt
@@ -73,6 +73,9 @@
if(COMPILER_RT_BUILD_XRAY)
compiler_rt_test_runtime(xray)
endif()
+ if(COMPILER_RT_HAS_CRT)
+ add_subdirectory(crt)
+ endif()
# ShadowCallStack does not yet provide a runtime with compiler-rt, the tests
# include their own minimal runtime
add_subdirectory(shadowcallstack)
Index: compiler-rt/test/crt/CMakeLists.txt
===================================================================
--- /dev/null
+++ compiler-rt/test/crt/CMakeLists.txt
@@ -0,0 +1,31 @@
+set(CRT_LIT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+
+set(CRT_TESTSUITES)
+
+set(CRT_TEST_DEPS "")
+
+if(NOT COMPILER_RT_STANDALONE_BUILD AND COMPILER_RT_BUILD_CRT AND
+ COMPILER_RT_HAS_CRT)
+ list(APPEND CRT_TEST_DEPS crt)
+endif()
+
+set(CRT_TEST_ARCH ${CRT_SUPPORTED_ARCH})
+if (COMPILER_RT_BUILD_CRT AND COMPILER_RT_HAS_CRT)
+ foreach(arch ${CRT_TEST_ARCH})
+ set(CRT_TEST_TARGET_ARCH ${arch})
+ string(TOLOWER "-${arch}-${OS_NAME}" CRT_TEST_CONFIG_SUFFIX)
+ get_test_cc_for_arch(${arch} CRT_TEST_TARGET_CC CRT_TEST_TARGET_CFLAGS)
+ string(TOUPPER ${arch} ARCH_UPPER_CASE)
+ set(CONFIG_NAME ${ARCH_UPPER_CASE}${OS_NAME}Config)
+
+ configure_lit_site_cfg(
+ ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
+ ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME}/lit.site.cfg)
+ list(APPEND CRT_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME})
+ endforeach()
+endif()
+
+add_lit_testsuite(check-crt "Running the CRT tests"
+ ${CRT_TESTSUITES}
+ DEPENDS ${CRT_TEST_DEPS})
+set_target_properties(check-crt PROPERTIES FOLDER "Compiler-RT Misc")
Index: compiler-rt/test/crt/dso_handle.cpp
===================================================================
--- /dev/null
+++ compiler-rt/test/crt/dso_handle.cpp
@@ -0,0 +1,33 @@
+// RUN: %clangxx -g -DCRT_SHARED -c %s -fPIC -o %tshared.o
+// RUN: %clangxx -g -c %s -fPIC -o %t.o
+// RUN: %clangxx -g -shared -o %t.so -nostdlib %crti %shared_crtbegin %tshared.o %libstdcxx -lc -lm -lgcc_s %shared_crtend %crtn
+// RUN: %clangxx -g -o %t -nostdlib %crt1 %crti %crtbegin %t.o %libstdcxx -lc -lm %libgcc %t.so %crtend %crtn
+// RUN: %run %t 2>&1 | FileCheck %s
+
+#include <stdio.h>
+
+// CHECK: 1
+// CHECK-NEXT: ~A()
+
+#ifdef CRT_SHARED
+bool G;
+void C() {
+ printf("%d\n", G);
+}
+
+struct A {
+ A() { G = true; }
+ ~A() {
+ printf("~A()\n");
+ }
+};
+
+A a;
+#else
+void C();
+
+int main() {
+ C();
+ return 0;
+}
+#endif
Index: compiler-rt/test/crt/lit.cfg
===================================================================
--- /dev/null
+++ compiler-rt/test/crt/lit.cfg
@@ -0,0 +1,80 @@
+# -*- Python -*-
+
+import os
+import subprocess
+
+# Setup config name.
+config.name = 'CRT' + config.name_suffix
+
+# Setup source root.
+config.test_source_root = os.path.dirname(__file__)
+
+
+def get_library_path(file):
+ cmd = subprocess.Popen([config.clang.strip(),
+ config.target_cflags.strip(),
+ '-print-file-name=%s' % file],
+ stdout=subprocess.PIPE,
+ env=config.environment)
+ if not cmd.stdout:
+ lit_config.fatal("Couldn't find the library path for '%s'" % file)
+ dir = cmd.stdout.read().strip()
+ if sys.platform in ['win32'] and execute_external:
+ # Don't pass dosish path separator to msys bash.exe.
+ dir = dir.replace('\\', '/')
+ # Ensure the result is an ascii string, across Python2.5+ - Python3.
+ return str(dir.decode('ascii'))
+
+
+def get_libgcc_file_name():
+ cmd = subprocess.Popen([config.clang.strip(),
+ config.target_cflags.strip(),
+ '-print-libgcc-file-name'],
+ stdout=subprocess.PIPE,
+ env=config.environment)
+ if not cmd.stdout:
+ lit_config.fatal("Couldn't find the library path for '%s'" % file)
+ dir = cmd.stdout.read().strip()
+ if sys.platform in ['win32'] and execute_external:
+ # Don't pass dosish path separator to msys bash.exe.
+ dir = dir.replace('\\', '/')
+ # Ensure the result is an ascii string, across Python2.5+ - Python3.
+ return str(dir.decode('ascii'))
+
+
+def build_invocation(compile_flags):
+ return ' ' + ' '.join([config.clang] + compile_flags) + ' '
+
+
+# Setup substitutions.
+config.substitutions.append(
+ ('%clang ', build_invocation([config.target_cflags])))
+config.substitutions.append(
+ ('%clangxx ',
+ build_invocation(config.cxx_mode_flags + [config.target_cflags])))
+
+base_lib = os.path.join(
+ config.compiler_rt_libdir, "clang_rt.%%s-%s.o" % config.target_arch)
+config.substitutions.append(('%crtbegin', base_lib % "crtbegin"))
+config.substitutions.append(('%shared_crtbegin', base_lib % "crtbegin_shared"))
+config.substitutions.append(('%crtend', base_lib % "crtend"))
+config.substitutions.append(('%shared_crtend', base_lib % "crtend_shared"))
+
+config.substitutions.append(
+ ('%crt1', get_library_path('crt1.o')))
+config.substitutions.append(
+ ('%crti', get_library_path('crti.o')))
+config.substitutions.append(
+ ('%crtn', get_library_path('crtn.o')))
+
+config.substitutions.append(
+ ('%libgcc', get_libgcc_file_name()))
+
+config.substitutions.append(
+ ('%libstdcxx', '-l' + config.sanitizer_cxx_lib.lstrip('lib')))
+
+# Default test suffixes.
+config.suffixes = ['.c', '.cc', '.cpp']
+
+if config.host_os not in ['Linux']:
+ config.unsupported = True
Index: compiler-rt/test/crt/lit.site.cfg.in
===================================================================
--- /dev/null
+++ compiler-rt/test/crt/lit.site.cfg.in
@@ -0,0 +1,14 @@
+@LIT_SITE_CFG_IN_HEADER@
+
+# Tool-specific config options.
+config.name_suffix = "@CRT_TEST_CONFIG_SUFFIX@"
+config.crt_lit_source_dir = "@CRT_LIT_SOURCE_DIR@"
+config.target_cflags = "@CRT_TEST_TARGET_CFLAGS@"
+config.target_arch = "@CRT_TEST_TARGET_ARCH@"
+config.sanitizer_cxx_lib = "@SANITIZER_TEST_CXX_LIBNAME@"
+
+# Load common config for all compiler-rt lit tests
+lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/test/lit.common.configured")
+
+# Load tool-specific config that would do the real work.
+lit_config.load_config(config, "@CRT_LIT_SOURCE_DIR@/lit.cfg")

207
overlay/llvm-11/default.nix
Unescape Escape View File

@ -0,0 +1,207 @@
{ lowPrio, newScope, pkgs, stdenv, cmake, gccForLibs
, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
, buildPackages
, buildLlvmTools # tools, but from the previous stage, for cross
, targetLlvmLibraries # libraries, but from the next stage, for cross
, genodeBase ? null
}:
let
release_version = "11.0.0";
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}-${version}.src.tar.xz";
inherit sha256;
};
clang-tools-extra_src = fetch "clang-tools-extra" "02bcwwn54661madhq4nxc069s7p7pj5gpqi8ww50w3anbpviilzy";
tools = stdenv.lib.makeExtensible (tools: let
callPackage = newScope (tools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch; });
mkExtraBuildCommands = cc: ''
rsrc="$out/resource-root"
mkdir "$rsrc"
ln -s "${cc}/lib/clang/${release_version}/include" "$rsrc"
ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
ln -s "${targetLlvmLibraries.compiler-rt.out}/share" "$rsrc/share"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${gccForLibs}" >> $out/nix-support/cc-cflags
'';
in {
llvm = callPackage ./llvm.nix { };
clang-unwrapped = callPackage ./clang {
inherit (tools) lld;
inherit clang-tools-extra_src;
};
# disabled until recommonmark supports sphinx 3
#Llvm-manpages = lowPrio (tools.llvm.override {
# enableManpages = true;
# python3 = pkgs.python3; # don't use python-boot
#});
clang-manpages = lowPrio (tools.clang-unwrapped.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
# });
libclang = tools.clang-unwrapped.lib;
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 {