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homebrew-core/Formula/llvm@7.rb

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class LlvmAT7 < Formula
desc "Next-gen compiler infrastructure"
homepage "https://llvm.org/"
url "https://releases.llvm.org/7.1.0/llvm-7.1.0.src.tar.xz"
sha256 "1bcc9b285074ded87b88faaedddb88e6b5d6c331dfcfb57d7f3393dd622b3764"
license "NCSA"
revision 3
bottle do
sha256 cellar: :any, catalina: "ea1162f57d529a64b516055b9d1756dfa6402177f0f149453da9310580e063ec"
sha256 cellar: :any, mojave: "6deab84061586ffe36ab8755f9f3b3b792b0829a7933716aa2bf39f389a14ff6"
sha256 cellar: :any_skip_relocation, x86_64_linux: "17e8b89b11ca5faa71904c05483a96fda1e2268c9c8c76f7607a983e93f2a877"
end
# Clang cannot find system headers if Xcode CLT is not installed
pour_bottle? only_if: :clt_installed
keg_only :versioned_formula
# Deprecated in homebrew since 2022-05-29
disable! date: "2022-09-30", because: :versioned_formula
# https://llvm.org/docs/GettingStarted.html#requirement
depends_on "cmake" => :build
depends_on xcode: :build
depends_on arch: :x86_64
depends_on "libffi"
depends_on maximum_macos: :catalina # Needs patches backported to LLVM 8 and 9 to work on Big Sur
uses_from_macos "libedit" # llvm requires <histedit.h>
uses_from_macos "libffi", since: :catalina
uses_from_macos "libxml2"
uses_from_macos "ncurses"
uses_from_macos "zlib"
on_linux do
depends_on "glibc" if Formula["glibc"].any_version_installed?
depends_on "binutils" # needed for gold and strip
depends_on "libelf" # openmp requires <gelf.h>
depends_on "python@3.8"
end
resource "clang" do
url "https://releases.llvm.org/7.1.0/cfe-7.1.0.src.tar.xz"
sha256 "e97dc472aae52197a4d5e0185eb8f9e04d7575d2dc2b12194ddc768e0f8a846d"
end
resource "clang-extra-tools" do
url "https://releases.llvm.org/7.1.0/clang-tools-extra-7.1.0.src.tar.xz"
sha256 "1ce0042c48ecea839ce67b87e9739cf18e7a5c2b3b9a36d177d00979609b6451"
end
resource "compiler-rt" do
url "https://releases.llvm.org/7.1.0/compiler-rt-7.1.0.src.tar.xz"
sha256 "057bdac0581215b5ceb39edfd5bbef9eb79578f16a8908349f3066251fba88d8"
end
resource "libcxx" do
url "https://releases.llvm.org/7.1.0/libcxx-7.1.0.src.tar.xz"
sha256 "4442b408eaea3c1e4aa2cf21da38aba9f0856b4b522b1c3d555c3251af62b04e"
end
resource "libcxxabi" do
on_linux do
url "https://releases.llvm.org/7.1.0/libcxxabi-7.1.0.src.tar.xz"
sha256 "6241e81f7c62e11cf54f865ae2d5b8e93943e5f007ccbb59f88f2b289bee98fd"
end
end
resource "libunwind" do
url "https://releases.llvm.org/7.1.0/libunwind-7.1.0.src.tar.xz"
sha256 "174a7fc9eb7422c8ea96993649be0f80ca5937f3fe000c40c3d15b1074d7ad0c"
end
resource "lld" do
url "https://releases.llvm.org/7.1.0/lld-7.1.0.src.tar.xz"
sha256 "a10f274a0a09408eaf9c088dec6fb2254f7d641221437763c94546cbfe595867"
end
resource "openmp" do
url "https://releases.llvm.org/7.1.0/openmp-7.1.0.src.tar.xz"
sha256 "1ee73aa1eef4ef7f75c96b24bf02445440602064c0074891ca5344a63f1fe5b5"
end
resource "polly" do
url "https://releases.llvm.org/7.1.0/polly-7.1.0.src.tar.xz"
sha256 "305454f72db5e30def3f48e2dc56ce62f9c52c3b9278b8f357a093a588b6139b"
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/libcxxabi").install resource("libcxxabi") if OS.linux?
(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_LLVM_DYLIB=ON
-DLLVM_ENABLE_EH=ON
-DLLVM_ENABLE_FFI=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
]
if MacOS.version >= :catalina
args << "-DFFI_INCLUDE_DIR=#{MacOS.sdk_path}/usr/include/ffi"
args << "-DFFI_LIBRARY_DIR=#{MacOS.sdk_path}/usr/lib"
else
args << "-DFFI_INCLUDE_DIR=#{Formula["libffi"].opt_include}"
args << "-DFFI_LIBRARY_DIR=#{Formula["libffi"].opt_lib}"
end
if OS.mac?
args << "-DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON" if MacOS.version <= :mojave
args << "-DLLVM_CREATE_XCODE_TOOLCHAIN=ON"
args << "-DLLVM_ENABLE_LIBCXX=ON"
args << "-DDARWIN_osx_ARCHS=x86_64;x86_64h"
end
if OS.linux?
args << "-DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON"
args << "-DLLVM_CREATE_XCODE_TOOLCHAIN=OFF"
args << "-DLLVM_ENABLE_LIBCXX=OFF"
args << "-DCLANG_DEFAULT_CXX_STDLIB=libstdc++"
# Enable llvm gold plugin for LTO
args << "-DLLVM_BINUTILS_INCDIR=#{Formula["binutils"].opt_include}"
# Add flags to build shared and static libc++ which are independent of GCC
args += %w[
-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF
-DCMAKE_POSITION_INDEPENDENT_CODE=ON
-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON
-DLIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY=OFF
-DLIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY=ON
-DLIBCXX_USE_COMPILER_RT=ON
-DLIBCXXABI_ENABLE_STATIC_UNWINDER=ON
-DLIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY=OFF
-DLIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY=ON
-DLIBCXXABI_USE_COMPILER_RT=ON
-DLIBCXXABI_USE_LLVM_UNWINDER=ON
-DLIBUNWIND_USE_COMPILER_RT=ON
]
# Don't pass -rtlib as an argument to GCC because it doesn't understand it.
inreplace (buildpath/"projects/libcxx/CMakeLists.txt"),
"list(APPEND LIBCXX_LINK_FLAGS \"-rtlib=compiler-rt\")", ""
inreplace (buildpath/"projects/libcxxabi/CMakeLists.txt"),
"list(APPEND LIBCXXABI_LINK_FLAGS \"-rtlib=compiler-rt\")", ""
inreplace (buildpath/"projects/libunwind/CMakeLists.txt"),
"list(APPEND LIBUNWIND_LINK_FLAGS \"-rtlib=compiler-rt\")", ""
end
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" if MacOS::Xcode.installed?
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
xz = if OS.mac?
"2.7"
else
"3.8"
end
(lib/"python#{xz}/site-packages").install buildpath/"bindings/python/llvm"
(lib/"python#{xz}/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+\.?)+/]
args = [
"-L#{lib}",
"-fopenmp",
"-nobuiltininc",
"-I#{lib}/clang/#{clean_version}/include",
]
args << "-Wl,-rpath=#{lib}" if OS.linux?
system "#{bin}/clang", *args, "omptest.c", "-o", "omptest", *ENV["LDFLAGS"].split
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" if OS.mac?
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++",
"-rtlib=compiler-rt", "-L#{opt_lib}", "-Wl,-rpath,#{opt_lib}"
assert_includes (testpath/"testlibc++").dynamically_linked_libraries,
(opt_lib/shared_library("libc++", "1")).to_path
(testpath/"testlibc++").dynamically_linked_libraries.each do |lib|
refute_match(/libstdc\+\+/, lib)
refute_match(/libgcc/, lib)
refute_match(/libatomic/, lib)
end
assert_equal "Hello World!", shell_output("./testlibc++").chomp
if OS.linux?
# Link installed libc++, libc++abi, and libunwind archives both into
# a position independent executable (PIE), as well as into a fully
# position independent (PIC) DSO for things like plugins that export
# a C-only API but internally use C++.
#
# FIXME: It'd be nice to be able to use flags like `-static-libstdc++`
# together with `-stdlib=libc++` (the latter one we need anyways for
# headers) to achieve this but those flags don't set up the correct
# search paths or handle all of the libraries needed by `libc++` when
# linking statically.
system "#{bin}/clang++", "-v", "-o", "test_pie_runtimes",
"-pie", "-fPIC", "test.cpp", "-L#{opt_lib}",
"-stdlib=libc++", "-rtlib=compiler-rt",
"-static-libstdc++", "-lpthread", "-ldl"
assert_equal "Hello World!", shell_output("./test_pie_runtimes").chomp
(testpath/"test_pie_runtimes").dynamically_linked_libraries.each do |lib|
refute_match(/lib(std)?c\+\+/, lib)
refute_match(/libgcc/, lib)
refute_match(/libatomic/, lib)
refute_match(/libunwind/, lib)
end
(testpath/"test_plugin.cpp").write <<~EOS
#include <iostream>
__attribute__((visibility("default")))
extern "C" void run_plugin() {
std::cout << "Hello Plugin World!" << std::endl;
}
EOS
(testpath/"test_plugin_main.c").write <<~EOS
extern void run_plugin();
int main() {
run_plugin();
}
EOS
system "#{bin}/clang++", "-v", "-o", "test_plugin.so",
"-shared", "-fPIC", "test_plugin.cpp", "-L#{opt_lib}",
"-stdlib=libc++", "-rtlib=compiler-rt",
"-static-libstdc++", "-lpthread", "-ldl"
system "#{bin}/clang", "-v",
"test_plugin_main.c", "-o", "test_plugin_libc++",
"test_plugin.so", "-Wl,-rpath=#{testpath}", "-rtlib=compiler-rt"
assert_equal "Hello Plugin World!", shell_output("./test_plugin_libc++").chomp
(testpath/"test_plugin.so").dynamically_linked_libraries.each do |lib|
refute_match(/lib(std)?c\+\+/, lib)
refute_match(/libgcc/, lib)
refute_match(/libatomic/, lib)
refute_match(/libunwind/, lib)
end
end
(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 --use-analyzer #{bin}/clang++ " \
"#{bin}/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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