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homebrew-core/Formula/llvm.rb

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class Llvm < Formula
desc "Next-gen compiler infrastructure"
homepage "https://llvm.org/"
# The LLVM Project is under the Apache License v2.0 with LLVM Exceptions
license "Apache-2.0"
head "https://github.com/llvm/llvm-project.git"
stable do
url "https://github.com/llvm/llvm-project/releases/download/llvmorg-11.0.0/llvm-project-11.0.0.tar.xz"
sha256 "b7b639fc675fa1c86dd6d0bc32267be9eb34451748d2efd03f674b773000e92b"
patch do
url "https://github.com/llvm/llvm-project/commit/c86f56e32e724c6018e579bb2bc11e667c96fc96.patch?full_index=1"
sha256 "6e13e01b4f9037bb6f43f96cb752d23b367fe7db4b66d9bf2a4aeab9234b740a"
end
patch do
url "https://github.com/llvm/llvm-project/commit/31e5f7120bdd2f76337686d9d169b1c00e6ee69c.patch?full_index=1"
sha256 "f025110aa6bf80bd46d64a0e2b1e2064d165353cd7893bef570b6afba7e90b4d"
end
patch do
url "https://github.com/llvm/llvm-project/commit/3c7bfbd6831b2144229734892182d403e46d7baf.patch?full_index=1"
sha256 "62014ddad6d5c485ecedafe3277fe7978f3f61c940976e3e642536726abaeb68"
end
patch do
url "https://github.com/llvm/llvm-project/commit/c4d7536136b331bada079b2afbb2bd09ad8296bf.patch?full_index=1"
sha256 "2b894cbaf990510969bf149697882c86a068a1d704e749afa5d7b71b6ee2eb9f"
end
end
livecheck do
url :homepage
regex(/LLVM (\d+.\d+.\d+)/i)
end
bottle do
cellar :any
sha256 "313e4f27bc61f4a7afe193288c0fb98a8c96efe89edf82990ae1b79d584196c5" => :catalina
sha256 "0d9e7f09db772677467075f5fe8440130cd08b3019ed73ca4afa7b2f307d962e" => :mojave
sha256 "d3c239a222cf92151616f98ab2ff28ec40d9eee3d395a55d23c12a374a2e0977" => :high_sierra
end
# Clang cannot find system headers if Xcode CLT is not installed
pour_bottle? do
reason "The bottle needs the Xcode CLT to be installed."
satisfy { MacOS::CLT.installed? }
end
keg_only :provided_by_macos
# https://llvm.org/docs/GettingStarted.html#requirement
# We intentionally use Make instead of Ninja.
# See: Homebrew/homebrew-core/issues/35513
depends_on "cmake" => :build
depends_on "python@3.9" => :build
depends_on "libffi"
uses_from_macos "libedit"
uses_from_macos "libxml2"
uses_from_macos "ncurses"
uses_from_macos "zlib"
def install
projects = %w[
clang
clang-tools-extra
lld
lldb
polly
]
# OpenMP currently fails to build on ARM
# https://github.com/Homebrew/brew/issues/7857#issuecomment-661484670
projects << "openmp" unless Hardware::CPU.arm?
runtimes = %w[
compiler-rt
libcxx
libcxxabi
libunwind
]
py_ver = "3.9"
# Apple's libstdc++ is too old to build LLVM
ENV.libcxx if ENV.compiler == :clang
# compiler-rt has some iOS simulator features that require i386 symbols
# I'm assuming the rest of clang needs support too for 32-bit compilation
# to work correctly, but if not, perhaps universal binaries could be
# limited to compiler-rt. llvm makes this somewhat easier because compiler-rt
# can almost be treated as an entirely different build from llvm.
ENV.permit_arch_flags
args = %W[
-DLLVM_ENABLE_PROJECTS=#{projects.join(";")}
-DLLVM_ENABLE_RUNTIMES=#{runtimes.join(";")}
-DLLVM_POLLY_LINK_INTO_TOOLS=ON
-DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON
-DLLVM_LINK_LLVM_DYLIB=ON
-DLLVM_BUILD_LLVM_C_DYLIB=ON
-DLLVM_ENABLE_EH=ON
-DLLVM_ENABLE_FFI=ON
-DLLVM_ENABLE_LIBCXX=ON
-DLLVM_ENABLE_RTTI=ON
-DLLVM_INCLUDE_DOCS=OFF
-DLLVM_INCLUDE_TESTS=OFF
-DLLVM_INSTALL_UTILS=ON
-DLLVM_ENABLE_Z3_SOLVER=OFF
-DLLVM_OPTIMIZED_TABLEGEN=ON
-DLLVM_TARGETS_TO_BUILD=all
-DFFI_INCLUDE_DIR=#{Formula["libffi"].opt_lib}/libffi-#{Formula["libffi"].version}/include
-DFFI_LIBRARY_DIR=#{Formula["libffi"].opt_lib}
-DLLVM_CREATE_XCODE_TOOLCHAIN=#{MacOS::Xcode.installed? ? "ON" : "OFF"}
-DLLDB_USE_SYSTEM_DEBUGSERVER=ON
-DLLDB_ENABLE_PYTHON=OFF
-DLLDB_ENABLE_LUA=OFF
-DLLDB_ENABLE_LZMA=OFF
-DLIBOMP_INSTALL_ALIASES=OFF
-DCLANG_PYTHON_BINDINGS_VERSIONS=#{py_ver}
]
sdk = MacOS.sdk_path_if_needed
args << "-DDEFAULT_SYSROOT=#{sdk}" if sdk
if MacOS.version == :mojave && MacOS::CLT.installed?
# Mojave CLT linker via software update is older than Xcode.
# Use it to retain compatibility.
args << "-DCMAKE_LINKER=/Library/Developer/CommandLineTools/usr/bin/ld"
end
llvmpath = buildpath/"llvm"
mkdir llvmpath/"build" do
system "cmake", "-G", "Unix Makefiles", "..", *(std_cmake_args + args)
system "make"
system "make", "install"
system "make", "install-xcode-toolchain" if MacOS::Xcode.installed?
end
# Install LLVM Python bindings
# Clang Python bindings are installed by CMake
(lib/"python#{py_ver}/site-packages").install llvmpath/"bindings/python/llvm"
# Install Emacs modes
elisp.install Dir[llvmpath/"utils/emacs/*.el"] + Dir[share/"clang/*.el"]
end
def caveats
<<~EOS
To use the bundled libc++ please add the following LDFLAGS:
LDFLAGS="-L#{opt_lib} -Wl,-rpath,#{opt_lib}"
EOS
end
test do
assert_equal prefix.to_s, shell_output("#{bin}/llvm-config --prefix").chomp
(testpath/"omptest.c").write <<~EOS
#include <stdlib.h>
#include <stdio.h>
#include <omp.h>
int main() {
#pragma omp parallel num_threads(4)
{
printf("Hello from thread %d, nthreads %d\\n", omp_get_thread_num(), omp_get_num_threads());
}
return EXIT_SUCCESS;
}
EOS
clean_version = version.to_s[/(\d+\.?)+/]
system "#{bin}/clang", "-L#{lib}", "-fopenmp", "-nobuiltininc",
"-I#{lib}/clang/#{clean_version}/include",
"omptest.c", "-o", "omptest"
testresult = shell_output("./omptest")
sorted_testresult = testresult.split("\n").sort.join("\n")
expected_result = <<~EOS
Hello from thread 0, nthreads 4
Hello from thread 1, nthreads 4
Hello from thread 2, nthreads 4
Hello from thread 3, nthreads 4
EOS
assert_equal expected_result.strip, sorted_testresult.strip
(testpath/"test.c").write <<~EOS
#include <stdio.h>
int main()
{
printf("Hello World!\\n");
return 0;
}
EOS
(testpath/"test.cpp").write <<~EOS
#include <iostream>
int main()
{
std::cout << "Hello World!" << std::endl;
return 0;
}
EOS
# Testing default toolchain and SDK location.
system "#{bin}/clang++", "-v",
"-std=c++11", "test.cpp", "-o", "test++"
assert_includes MachO::Tools.dylibs("test++"), "/usr/lib/libc++.1.dylib"
assert_equal "Hello World!", shell_output("./test++").chomp
system "#{bin}/clang", "-v", "test.c", "-o", "test"
assert_equal "Hello World!", shell_output("./test").chomp
# Testing Command Line Tools
if MacOS::CLT.installed?
toolchain_path = "/Library/Developer/CommandLineTools"
system "#{bin}/clang++", "-v",
"-isysroot", MacOS::CLT.sdk_path,
"-isystem", "#{toolchain_path}/usr/include/c++/v1",
"-isystem", "#{toolchain_path}/usr/include",
"-isystem", "#{MacOS::CLT.sdk_path}/usr/include",
"-std=c++11", "test.cpp", "-o", "testCLT++"
assert_includes MachO::Tools.dylibs("testCLT++"), "/usr/lib/libc++.1.dylib"
assert_equal "Hello World!", shell_output("./testCLT++").chomp
system "#{bin}/clang", "-v", "test.c", "-o", "testCLT"
assert_equal "Hello World!", shell_output("./testCLT").chomp
end
# Testing Xcode
if MacOS::Xcode.installed?
system "#{bin}/clang++", "-v",
"-isysroot", MacOS::Xcode.sdk_path,
"-isystem", "#{MacOS::Xcode.toolchain_path}/usr/include/c++/v1",
"-isystem", "#{MacOS::Xcode.toolchain_path}/usr/include",
"-isystem", "#{MacOS::Xcode.sdk_path}/usr/include",
"-std=c++11", "test.cpp", "-o", "testXC++"
assert_includes MachO::Tools.dylibs("testXC++"), "/usr/lib/libc++.1.dylib"
assert_equal "Hello World!", shell_output("./testXC++").chomp
system "#{bin}/clang", "-v",
"-isysroot", MacOS.sdk_path,
"test.c", "-o", "testXC"
assert_equal "Hello World!", shell_output("./testXC").chomp
end
# link against installed libc++
# related to https://github.com/Homebrew/legacy-homebrew/issues/47149
system "#{bin}/clang++", "-v",
"-isystem", "#{opt_include}/c++/v1",
"-std=c++11", "-stdlib=libc++", "test.cpp", "-o", "testlibc++",
"-L#{opt_lib}", "-Wl,-rpath,#{opt_lib}"
assert_includes MachO::Tools.dylibs("testlibc++"), "#{opt_lib}/libc++.1.dylib"
assert_equal "Hello World!", shell_output("./testlibc++").chomp
(testpath/"scanbuildtest.cpp").write <<~EOS
#include <iostream>
int main() {
int *i = new int;
*i = 1;
delete i;
std::cout << *i << std::endl;
return 0;
}
EOS
assert_includes shell_output("#{bin}/scan-build clang++ scanbuildtest.cpp 2>&1"),
"warning: Use of memory after it is freed"
(testpath/"clangformattest.c").write <<~EOS
int main() {
printf("Hello world!"); }
EOS
assert_equal "int main() { printf(\"Hello world!\"); }\n",
shell_output("#{bin}/clang-format -style=google clangformattest.c")
# Ensure LLVM did not regress output of `llvm-config --system-libs` which for a time
# was known to output incorrect linker flags; e.g., `-llibxml2.tbd` instead of `-lxml2`.
# On the other hand, note that a fully qualified path to `dylib` or `tbd` is OK, e.g.,
# `/usr/local/lib/libxml2.tbd` or `/usr/local/lib/libxml2.dylib`.
shell_output("#{bin}/llvm-config --system-libs").chomp.strip.split(" ").each do |lib|
if lib.start_with?("-l")
assert !lib.end_with?(".tbd"), "expected abs path when lib reported as .tbd"
assert !lib.end_with?(".dylib"), "expected abs path when lib reported as .dylib"
else
p = Pathname.new(lib)
if p.extname == ".tbd" || p.extname == ".dylib"
assert p.absolute?, "expected abs path when lib reported as .tbd or .dylib"
end
end
end
end
end
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