From d453273fbf86ff1526094a84b01ef8fb9fad98e3 Mon Sep 17 00:00:00 2001 From: Matthew Bauer Date: Thu, 11 Apr 2019 20:51:48 -0400 Subject: llvm8: support c++ in cross case 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 --- pkgs/development/compilers/llvm/8/compiler-rt.nix | 4 +- pkgs/development/compilers/llvm/8/default.nix | 72 +++++++++++++++++----- .../compilers/llvm/8/libc++/default.nix | 3 +- pkgs/development/compilers/llvm/8/libc++abi.nix | 7 ++- pkgs/development/compilers/llvm/8/libunwind.nix | 22 +++++++ 5 files changed, 89 insertions(+), 19 deletions(-) create mode 100644 pkgs/development/compilers/llvm/8/libunwind.nix (limited to 'pkgs/development/compilers/llvm') diff --git a/pkgs/development/compilers/llvm/8/compiler-rt.nix b/pkgs/development/compilers/llvm/8/compiler-rt.nix index 4965b57b0d73..47c8b7bd59f5 100644 --- a/pkgs/development/compilers/llvm/8/compiler-rt.nix +++ b/pkgs/development/compilers/llvm/8/compiler-rt.nix @@ -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 $out/lib/crtendS.o ''; diff --git a/pkgs/development/compilers/llvm/8/default.nix b/pkgs/development/compilers/llvm/8/default.nix index c5f2163450fe..5cd3bdfbe7b6 100644 --- a/pkgs/development/compilers/llvm/8/default.nix +++ b/pkgs/development/compilers/llvm/8/default.nix @@ -23,7 +23,7 @@ let ln -s "${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.compiler-rt + ]; + extraBuildCommands = '' + 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.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 + 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}" >> $out/nix-support/cc-cflags ''; }; @@ -129,21 +159,33 @@ let callPackage = newScope (libraries // buildLlvmTools // { inherit stdenv cmake libxml2 python isl release_version version fetch; }); in { - compiler-rt = callPackage ./compiler-rt.nix { - stdenv = if stdenv.hostPlatform.useLLVM or false - then overrideCC stdenv buildLlvmTools.lldClangNoCompilerRt - else stdenv; - }; + compiler-rt = callPackage ./compiler-rt.nix ({} // + (stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) { + stdenv = overrideCC stdenv buildLlvmTools.lldClangNoCompilerRt; + })); stdenv = overrideCC stdenv buildLlvmTools.clang; libcxxStdenv = overrideCC stdenv buildLlvmTools.libcxxClang; - libcxx = callPackage ./libc++ {}; + libcxx = callPackage ./libc++ ({} // + (stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) { + stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx; + })); - libcxxabi = callPackage ./libc++abi.nix {}; + libcxxabi = callPackage ./libc++abi.nix ({} // + (stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) { + stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx; + libunwind = libraries.libunwind; + })); openmp = callPackage ./openmp.nix {}; + + libunwind = callPackage ./libunwind.nix ({} // + (stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) { + stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx; + })); + }); in { inherit tools libraries; } // libraries // tools diff --git a/pkgs/development/compilers/llvm/8/libc++/default.nix b/pkgs/development/compilers/llvm/8/libc++/default.nix index 84db33209ebd..d0a5c37c4148 100644 --- a/pkgs/development/compilers/llvm/8/libc++/default.nix +++ b/pkgs/development/compilers/llvm/8/libc++/default.nix @@ -30,7 +30,8 @@ stdenv.mkDerivation rec { "-DLIBCXX_LIBCXXABI_LIB_PATH=${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; diff --git a/pkgs/development/compilers/llvm/8/libc++abi.nix b/pkgs/development/compilers/llvm/8/libc++abi.nix index 976c289e5bc5..0eb5ebca5159 100644 --- a/pkgs/development/compilers/llvm/8/libc++abi.nix +++ b/pkgs/development/compilers/llvm/8/libc++abi.nix @@ -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/$(ls -d libcxx-*)" '' + stdenv.lib.optionalString stdenv.isDarwin '' export TRIPLE=x86_64-apple-darwin '' + stdenv.lib.optionalString stdenv.hostPlatform.isMusl '' diff --git a/pkgs/development/compilers/llvm/8/libunwind.nix b/pkgs/development/compilers/llvm/8/libunwind.nix new file mode 100644 index 000000000000..a187d0adc994 --- /dev/null +++ b/pkgs/development/compilers/llvm/8/libunwind.nix @@ -0,0 +1,22 @@ +{ stdenv, version, fetch, cmake, libcxx, fetchpatch }: + +stdenv.mkDerivation { + name = "libunwind-${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; +} -- cgit 1.4.1