mirror of
https://github.com/NixOS/nixpkgs.git
synced 2025-06-11 20:25:32 +03:00
929e918a51
This increases the memory required to link by quite a bit, but it should be fine for Hydra, and people building themselves with insufficient RAM can either disable it, or just decrease --cores.
358 lines
13 KiB
Nix
358 lines
13 KiB
Nix
{
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lib,
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stdenv,
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llvm_meta,
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src ? null,
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monorepoSrc ? null,
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runCommand,
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cmake,
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ninja,
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libxml2,
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libllvm,
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release_version,
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version,
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python3,
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buildLlvmTools,
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fixDarwinDylibNames,
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enableManpages ? false,
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devExtraCmakeFlags ? [ ],
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replaceVars,
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getVersionFile,
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fetchpatch,
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}:
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stdenv.mkDerivation (
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finalAttrs:
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{
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pname = "clang";
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inherit version;
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src =
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if monorepoSrc != null then
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runCommand "clang-src-${version}" { inherit (monorepoSrc) passthru; } (
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''
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mkdir -p "$out"
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''
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+ lib.optionalString (lib.versionAtLeast release_version "14") ''
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cp -r ${monorepoSrc}/cmake "$out"
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''
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+ ''
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cp -r ${monorepoSrc}/clang "$out"
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cp -r ${monorepoSrc}/clang-tools-extra "$out"
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''
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)
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else
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src;
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sourceRoot = "${finalAttrs.src.name}/clang";
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patches =
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[
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(getVersionFile "clang/purity.patch")
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# Remove extraneous ".a" suffix from baremetal clang_rt.builtins when compiling for baremetal.
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# https://reviews.llvm.org/D51899
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(getVersionFile "clang/gnu-install-dirs.patch")
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]
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++ lib.optionals (lib.versionOlder release_version "20") [
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# https://github.com/llvm/llvm-project/pull/116476
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# prevent clang ignoring warnings / errors for unsuppored
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# options when building & linking a source file with trailing
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# libraries. eg: `clang -munsupported hello.c -lc`
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./clang-unsupported-option.patch
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]
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++
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lib.optional (lib.versions.major release_version == "13")
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# Revert of https://reviews.llvm.org/D100879
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# The malloc alignment assumption is incorrect for jemalloc and causes
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# mis-compilation in firefox.
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# See: https://bugzilla.mozilla.org/show_bug.cgi?id=1741454
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(getVersionFile "clang/revert-malloc-alignment-assumption.patch")
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++ lib.optional (lib.versionOlder release_version "17") (
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if lib.versionAtLeast release_version "14" then
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fetchpatch {
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name = "ignore-nostd-link.patch";
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url = "https://github.com/llvm/llvm-project/commit/5b77e752dcd073846b89559d6c0e1a7699e58615.patch";
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relative = "clang";
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hash = "sha256-qzSAmoGY+7POkDhcGgQRPaNQ3+7PIcIc9cZuiE/eLkc=";
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}
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else
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./ignore-nostd-link-13.diff
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)
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# Pass the correct path to libllvm
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++ [
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(replaceVars
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(
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if (lib.versionOlder release_version "16") then
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./clang-11-15-LLVMgold-path.patch
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else
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./clang-at-least-16-LLVMgold-path.patch
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)
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{
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libllvmLibdir = "${libllvm.lib}/lib";
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}
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)
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]
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# Backport version logic from Clang 16. This is needed by the following patch.
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++ lib.optional (lib.versions.major release_version == "15") (fetchpatch {
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name = "clang-darwin-Use-consistent-version-define-stringifying-logic.patch";
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url = "https://github.com/llvm/llvm-project/commit/60a33ded751c86fff9ac1c4bdd2b341fbe4b0649.patch?full_index=1";
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includes = [ "lib/Basic/Targets/OSTargets.cpp" ];
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stripLen = 1;
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hash = "sha256-YVTSg5eZLz3po2AUczPNXCK26JA3CuTh6Iqp7hAAKIs=";
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})
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# Backport `__ENVIRONMENT_OS_VERSION_MIN_REQUIRED__` support from Clang 17.
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# This is needed by newer SDKs (14+).
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++
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lib.optional
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(
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lib.versionAtLeast (lib.versions.major release_version) "15"
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&& lib.versionOlder (lib.versions.major release_version) "17"
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)
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(fetchpatch {
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name = "clang-darwin-An-OS-version-preprocessor-define.patch";
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url = "https://github.com/llvm/llvm-project/commit/c8e2dd8c6f490b68e41fe663b44535a8a21dfeab.patch?full_index=1";
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includes = [ "lib/Basic/Targets/OSTargets.cpp" ];
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stripLen = 1;
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hash = "sha256-Vs32kql7N6qtLqc12FtZHURcbenA7+N3E/nRRX3jdig=";
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})
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# Fixes a bunch of lambda-related crashes
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# https://github.com/llvm/llvm-project/pull/93206
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++ lib.optional (lib.versions.major release_version == "18") (fetchpatch {
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name = "tweak-tryCaptureVariable-for-unevaluated-lambdas.patch";
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url = "https://github.com/llvm/llvm-project/commit/3d361b225fe89ce1d8c93639f27d689082bd8dad.patch";
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# TreeTransform.h is not affected in LLVM 18.
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excludes = [
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"docs/ReleaseNotes.rst"
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"lib/Sema/TreeTransform.h"
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];
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stripLen = 1;
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hash = "sha256-1NKej08R9SPlbDY/5b0OKUsHjX07i9brR84yXiPwi7E=";
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})
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++
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lib.optional (stdenv.isAarch64 && lib.versions.major release_version == "17")
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# Fixes llvm17 tblgen builds on aarch64.
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# https://github.com/llvm/llvm-project/issues/106521#issuecomment-2337175680
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(getVersionFile "clang/aarch64-tblgen.patch");
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nativeBuildInputs =
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[
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cmake
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python3
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]
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++ (lib.optional (lib.versionAtLeast release_version "15") ninja)
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++ lib.optional (lib.versionAtLeast version "18" && enableManpages) python3.pkgs.myst-parser
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++ lib.optional enableManpages python3.pkgs.sphinx
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++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
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buildInputs = [
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libxml2
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libllvm
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];
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cmakeFlags =
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(lib.optionals (lib.versionAtLeast release_version "15") [
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(lib.cmakeFeature "CLANG_INSTALL_PACKAGE_DIR" "${placeholder "dev"}/lib/cmake/clang")
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])
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++ [
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(lib.cmakeBool "CLANGD_BUILD_XPC" false)
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(lib.cmakeBool "LLVM_ENABLE_RTTI" true)
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(lib.cmakeFeature "LLVM_TABLEGEN_EXE" "${buildLlvmTools.tblgen}/bin/llvm-tblgen")
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(lib.cmakeFeature "CLANG_TABLEGEN" "${buildLlvmTools.tblgen}/bin/clang-tblgen")
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]
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++ lib.optionals (lib.versionAtLeast release_version "17") [
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(lib.cmakeBool "LLVM_INCLUDE_TESTS" false)
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]
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++ lib.optionals enableManpages [
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(lib.cmakeBool "CLANG_INCLUDE_DOCS" true)
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(lib.cmakeBool "LLVM_ENABLE_SPHINX" true)
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(lib.cmakeBool "SPHINX_OUTPUT_MAN" true)
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(lib.cmakeBool "SPHINX_OUTPUT_HTML" false)
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(lib.cmakeBool "SPHINX_WARNINGS_AS_ERRORS" false)
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]
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++ lib.optionals (lib.versionAtLeast release_version "15") [
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# Added in LLVM15:
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# `clang-tidy-confusable-chars-gen`: https://github.com/llvm/llvm-project/commit/c3574ef739fbfcc59d405985a3a4fa6f4619ecdb
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# `clang-pseudo-gen`: https://github.com/llvm/llvm-project/commit/cd2292ef824591cc34cc299910a3098545c840c7
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(lib.cmakeFeature "CLANG_TIDY_CONFUSABLE_CHARS_GEN" "${buildLlvmTools.tblgen}/bin/clang-tidy-confusable-chars-gen")
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]
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++ lib.optionals (lib.versionOlder release_version "20") [
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# clang-pseudo removed in LLVM20: https://github.com/llvm/llvm-project/commit/ed8f78827895050442f544edef2933a60d4a7935
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(lib.cmakeFeature "CLANG_PSEUDO_GEN" "${buildLlvmTools.tblgen}/bin/clang-pseudo-gen")
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]
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++ lib.optional (lib.versionAtLeast release_version "20") (
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lib.cmakeFeature "LLVM_DIR" "${libllvm.dev}/lib/cmake/llvm"
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)
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++ devExtraCmakeFlags;
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postPatch =
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''
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# Make sure clang passes the correct location of libLTO to ld64
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substituteInPlace lib/Driver/ToolChains/Darwin.cpp \
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--replace-fail 'StringRef P = llvm::sys::path::parent_path(D.Dir);' 'StringRef P = "${lib.getLib libllvm}";'
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(cd tools && ln -s ../../clang-tools-extra extra)
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''
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+ lib.optionalString stdenv.hostPlatform.isMusl ''
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sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
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'';
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outputs = [
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"out"
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"lib"
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"dev"
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"python"
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];
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separateDebugInfo = true;
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postInstall =
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''
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ln -sv $out/bin/clang $out/bin/cpp
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''
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+ (lib.optionalString (lib.versions.major release_version == "17") ''
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mkdir -p $lib/lib/clang
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mv $lib/lib/17 $lib/lib/clang/17
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'')
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+ (lib.optionalString (lib.versionAtLeast release_version "19") ''
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mv $out/lib/clang $lib/lib/clang
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'')
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+ ''
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# Move libclang to 'lib' output
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moveToOutput "lib/libclang.*" "$lib"
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moveToOutput "lib/libclang-cpp.*" "$lib"
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''
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+ (
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if lib.versionOlder release_version "15" then
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''
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mkdir -p $python/bin $python/share/{clang,scan-view}
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''
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else
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''
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mkdir -p $python/bin $python/share/clang/
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''
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)
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+ ''
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mv $out/bin/{git-clang-format,scan-view} $python/bin
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if [ -e $out/bin/set-xcode-analyzer ]; then
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mv $out/bin/set-xcode-analyzer $python/bin
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fi
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mv $out/share/clang/*.py $python/share/clang
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''
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+ (lib.optionalString (lib.versionOlder release_version "15") ''
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mv $out/share/scan-view/*.py $python/share/scan-view
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'')
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+ ''
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rm $out/bin/c-index-test
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patchShebangs $python/bin
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mkdir -p $dev/bin
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''
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+ (
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if lib.versionOlder release_version "15" then
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''
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cp bin/clang-tblgen $dev/bin
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''
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else if lib.versionOlder release_version "20" then
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''
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cp bin/{clang-tblgen,clang-tidy-confusable-chars-gen,clang-pseudo-gen} $dev/bin
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''
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else
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''
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cp bin/{clang-tblgen,clang-tidy-confusable-chars-gen} $dev/bin
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''
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);
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env =
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lib.optionalAttrs
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(
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stdenv.buildPlatform != stdenv.hostPlatform
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&& !stdenv.hostPlatform.useLLVM
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&& lib.versionAtLeast release_version "15"
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)
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{
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# The following warning is triggered with (at least) gcc >=
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# 12, but appears to occur only for cross compiles.
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NIX_CFLAGS_COMPILE = "-Wno-maybe-uninitialized";
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};
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passthru = {
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inherit libllvm;
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isClang = true;
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hardeningUnsupportedFlagsByTargetPlatform =
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targetPlatform:
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[ "fortify3" ]
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++ lib.optional (
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(lib.versionOlder release_version "7") || !targetPlatform.isLinux || !targetPlatform.isx86_64
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) "shadowstack"
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++ lib.optional (
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(lib.versionOlder release_version "8") || !targetPlatform.isAarch64 || !targetPlatform.isLinux
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) "pacret"
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++ lib.optional (
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(lib.versionOlder release_version "11")
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|| (targetPlatform.isAarch64 && (lib.versionOlder release_version "18.1"))
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|| (targetPlatform.isFreeBSD && (lib.versionOlder release_version "15"))
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|| !(targetPlatform.isLinux || targetPlatform.isFreeBSD)
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|| !(
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targetPlatform.isx86
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|| targetPlatform.isPower64
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|| targetPlatform.isS390x
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|| targetPlatform.isAarch64
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)
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) "stackclashprotection"
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++ lib.optional (
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(lib.versionOlder release_version "15") || !(targetPlatform.isx86_64 || targetPlatform.isAarch64)
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) "zerocallusedregs"
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++ lib.optional (lib.versionOlder release_version "15") "strictflexarrays1"
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++ lib.optional (lib.versionOlder release_version "16") "strictflexarrays3"
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++ (finalAttrs.passthru.hardeningUnsupportedFlags or [ ]);
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};
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requiredSystemFeatures = [ "big-parallel" ];
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meta = llvm_meta // {
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homepage = "https://clang.llvm.org/";
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description = "C language family frontend for LLVM";
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longDescription = ''
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The Clang project provides a language front-end and tooling
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infrastructure for languages in the C language family (C, C++, Objective
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C/C++, OpenCL, CUDA, and RenderScript) for the LLVM project.
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It aims to deliver amazingly fast compiles, extremely useful error and
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warning messages and to provide a platform for building great source
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level tools. The Clang Static Analyzer and clang-tidy are tools that
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automatically find bugs in your code, and are great examples of the sort
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of tools that can be built using the Clang frontend as a library to
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parse C/C++ code.
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'';
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mainProgram = "clang";
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};
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}
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// lib.optionalAttrs enableManpages (
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{
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pname = "clang-manpages";
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installPhase = ''
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mkdir -p $out/share/man/man1
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# Manually install clang manpage
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cp docs/man/*.1 $out/share/man/man1/
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'';
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outputs = [ "out" ];
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doCheck = false;
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meta = llvm_meta // {
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description = "man page for Clang ${version}";
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};
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}
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// (
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if lib.versionOlder release_version "15" then
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{
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buildPhase = ''
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make docs-clang-man
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'';
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}
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else
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{
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ninjaFlags = [ "docs-clang-man" ];
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}
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)
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)
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)
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