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class LlvmAT6 < Formula
desc "Next-gen compiler infrastructure"
homepage "https://llvm.org/"
url "https://releases.llvm.org/6.0.1/llvm-6.0.1.src.tar.xz"
sha256 "b6d6c324f9c71494c0ccaf3dac1f16236d970002b42bb24a6c9e1634f7d0f4e2"
revision 2
bottle do
cellar :any
sha256 "a9b2f8263268e19f68d5bc8e1791526c867e6a41e22d5231a7494a96ed4af8fc" => :catalina
sha256 "fff84017bc2b346184e39edeff42bf5003efa5bc1c18d262c3200c5f6f8c2a76" => :mojave
sha256 "bd0b6ad2bbd65461491adfe0fd1c8415e917bc395f9aa8bbc14c754c9c09f84d" => :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 :versioned_formula
# https://llvm.org/docs/GettingStarted.html#requirement
depends_on "cmake" => :build
depends_on "libffi"
resource "clang" do
url "https://releases.llvm.org/6.0.1/cfe-6.0.1.src.tar.xz"
sha256 "7c243f1485bddfdfedada3cd402ff4792ea82362ff91fbdac2dae67c6026b667"
end
resource "clang-extra-tools" do
url "https://releases.llvm.org/6.0.1/clang-tools-extra-6.0.1.src.tar.xz"
sha256 "0d2e3727786437574835b75135f9e36f861932a958d8547ced7e13ebdda115f1"
end
resource "compiler-rt" do
url "https://releases.llvm.org/6.0.1/compiler-rt-6.0.1.src.tar.xz"
sha256 "f4cd1e15e7d5cb708f9931d4844524e4904867240c306b06a4287b22ac1c99b9"
end
resource "libcxx" do
url "https://releases.llvm.org/6.0.1/libcxx-6.0.1.src.tar.xz"
sha256 "7654fbc810a03860e6f01a54c2297a0b9efb04c0b9aa0409251d9bdb3726fc67"
end
resource "libunwind" do
url "https://releases.llvm.org/6.0.1/libunwind-6.0.1.src.tar.xz"
sha256 "a8186c76a16298a0b7b051004d0162032b9b111b857fbd939d71b0930fd91b96"
end
resource "lld" do
url "https://releases.llvm.org/6.0.1/lld-6.0.1.src.tar.xz"
sha256 "e706745806921cea5c45700e13ebe16d834b5e3c0b7ad83bf6da1f28b0634e11"
end
resource "lldb" do
url "https://releases.llvm.org/6.0.1/lldb-6.0.1.src.tar.xz"
sha256 "6b8573841f2f7b60ffab9715c55dceff4f2a44e5a6d590ac189d20e8e7472714"
end
resource "openmp" do
url "https://releases.llvm.org/6.0.1/openmp-6.0.1.src.tar.xz"
sha256 "66afca2b308351b180136cf899a3b22865af1a775efaf74dc8a10c96d4721c5a"
end
resource "polly" do
url "https://releases.llvm.org/6.0.1/polly-6.0.1.src.tar.xz"
sha256 "e7765fdf6c8c102b9996dbb46e8b3abc41396032ae2315550610cf5a1ecf4ecc"
end
def install
# Apple's libstdc++ is too old to build LLVM
ENV.libcxx if ENV.compiler == :clang
(buildpath/"tools/clang").install resource("clang")
(buildpath/"tools/clang/tools/extra").install resource("clang-extra-tools")
(buildpath/"projects/openmp").install resource("openmp")
(buildpath/"projects/libcxx").install resource("libcxx")
(buildpath/"projects/libunwind").install resource("libunwind")
(buildpath/"tools/lld").install resource("lld")
(buildpath/"tools/polly").install resource("polly")
(buildpath/"projects/compiler-rt").install resource("compiler-rt")
# 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[
-DLIBOMP_ARCH=x86_64
-DLINK_POLLY_INTO_TOOLS=ON
-DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON
-DLLVM_BUILD_LLVM_DYLIB=ON
-DLLVM_ENABLE_EH=ON
-DLLVM_ENABLE_FFI=ON
-DLLVM_ENABLE_LIBCXX=ON
-DLLVM_ENABLE_RTTI=ON
-DLLVM_INCLUDE_DOCS=OFF
-DLLVM_INSTALL_UTILS=ON
-DLLVM_OPTIMIZED_TABLEGEN=ON
-DLLVM_TARGETS_TO_BUILD=all
-DWITH_POLLY=ON
-DFFI_INCLUDE_DIR=#{Formula["libffi"].opt_lib}/libffi-#{Formula["libffi"].version}/include
-DFFI_LIBRARY_DIR=#{Formula["libffi"].opt_lib}
-DLLVM_CREATE_XCODE_TOOLCHAIN=ON
]
if MacOS.version >= :mojave
sdk_path = MacOS::CLT.installed? ? "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk" : MacOS.sdk_path
args << "-DDEFAULT_SYSROOT=#{sdk_path}"
end
mkdir "build" do
system "cmake", "-G", "Unix Makefiles", "..", *(std_cmake_args + args)
system "make"
system "make", "install"
system "make", "install-xcode-toolchain"
end
(share/"cmake").install "cmake/modules"
(share/"clang/tools").install Dir["tools/clang/tools/scan-{build,view}"]
# scan-build is in Perl, so the @ in our path needs to be escaped
inreplace "#{share}/clang/tools/scan-build/bin/scan-build",
"$RealBin/bin/clang", "#{bin}/clang".gsub("@", "\\@")
bin.install_symlink share/"clang/tools/scan-build/bin/scan-build", share/"clang/tools/scan-view/bin/scan-view"
man1.install_symlink share/"clang/tools/scan-build/man/scan-build.1"
# install llvm python bindings
(lib/"python2.7/site-packages").install buildpath/"bindings/python/llvm"
(lib/"python2.7/site-packages").install buildpath/"tools/clang/bindings/python/clang"
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"
sdk_path = "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk"
system "#{bin}/clang++", "-v",
"-isysroot", sdk_path,
"-isystem", "#{toolchain_path}/usr/include/c++/v1",
"-isystem", "#{toolchain_path}/usr/include",
"-isystem", "#{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.sdk_path,
"-isystem", "#{MacOS::Xcode.toolchain_path}/usr/include/c++/v1",
"-isystem", "#{MacOS::Xcode.toolchain_path}/usr/include",
"-isystem", "#{MacOS.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")
end
end
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