Add a musl base libcxx for stage1
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# Toolchain builder for the Serene programming language
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#
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# Copyright (c) 2019-2023 Sameer Rahmani <lxsameer@gnu.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 2.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import shutil
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from pathlib import Path
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from conan import ConanFile
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from conan.tools.cmake import CMake, CMakeToolchain, CMakeDeps
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from conan.tools.files import get
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from conf.utils import with_static_flags, current_dir, get_version
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TOOLCHAIN_TARGETS = [
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"runtimes",
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# lldb,
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"compiler-rt",
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]
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PROJECTS = [
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# "clang-tools-extra",
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# "clang",
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# "lld",
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# "llvm",
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# "mlir",
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# "lldb"
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]
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RUNTIME_TARGETS = [
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"compiler-rt",
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"libcxx",
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"libcxxabi",
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"libunwind",
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]
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CMAKE_OPTIONS = {
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"LLVM_USE_LINKER": "lld",
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"LLVM_ENABLE_NEW_PASS_MANAGER": "ON",
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"LLVM_BUILD_TESTS": "OFF",
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"LLVM_ENABLE_ASSERTIONS": "OFF",
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"LLVM_ENABLE_LIBXML2": "OFF",
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"LLVM_ENABLE_TERMINFO": "OFF",
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"LLVM_ENABLE_ZLIB": "FORCE_ON",
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"LLVM_INCLUDE_BENCHMARKS": "OFF",
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"LLVM_INCLUDE_EXAMPLES": "OFF",
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"LLVM_INCLUDE_TESTS": "OFF",
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"LLVM_INCLUDE_GO_TESTS": "OFF",
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"LLVM_ENABLE_BINDINGS": "OFF",
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"LLVM_TARGETS_TO_BUILD": "X86",
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"LLVM_STATIC_LINK_CXX_STDLIB": "ON",
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"PACKAGE_VENDOR": "Plex",
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"LLVM_ENABLE_PER_TARGET_RUNTIME_DIR": "ON",
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"ENABLE_X86_RELAX_RELOCATIONS": "ON",
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"BUILD_SHARED_LIBS": "OFF",
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"CLANG_ENABLE_BOOTSTRAP": "ON",
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"LIBCXX_ENABLE_STATIC_ABI_LIBRARY": "ON",
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"LIBCXXABI_ENABLE_SHARED": "OFF",
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"LIBCXX_ABI_VERSION": "2",
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"LLVM_CCACHE_BUILD": "ON",
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"LLVM_ENABLE_LTO": "THIN",
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"CMAKE_POSITION_INDEPENDENT_CODE": "ON",
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"CLANG_DEFAULT_CXX_STDLIB": "libc++",
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"CLANG_DEFAULT_LINKER": "lld",
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"CLANG_DEFAULT_OBJCOPY": "llvm-objcopy",
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"CLANG_DEFAULT_RTLIB": "compiler-rt",
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"CLANG_VENDOR_UTI": "serene.stage0",
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"LLVM_ENABLE_LIBCXX": "ON",
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"LLVM_ENABLE_ZSTD": "OFF",
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"LLVM_OPTIMIZED_TABLEGEN": "ON",
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"LLVM_THINLTO_CACHE_PATH": "/tmp/llvm-build-lto",
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"LLVM_ENABLE_PROJECTS": ";".join(PROJECTS),
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"LLVM_CCACHE_BUILD": "ON",
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"LIBCXX_HAS_MUSL_LIBC": "ON",
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"LLVM_DEFAULT_TARGET_TRIPLE": os.environ["TARGET"],
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"LIBCXX_CXX_ABI": "libcxxabi",
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"LIBCXX_USE_COMPILER_RT": "ON",
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"LIBCXX_ENABLE_STATIC_ABI_LIBRARY": "ON",
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"LIBCXX_ABI_UNSTABLE": "ON",
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"LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY": "ON",
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"LIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY": "ON",
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"LIBCXX_ABI_VERSION": "2",
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"LIBCXX_HAS_MUSL_LIBC": "ON",
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# musl doesn't have -latomic
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"LIBCXX_HAS_ATOMIC_LIB": "OFF",
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"LIBCXXABI_ENABLE_THREADS": "ON",
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"LIBCXXABI_HAS_CXA_THREAD_ATEXIT_IMPL": "OFF",
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"LIBCXXABI_USE_COMPILER_RT": "ON",
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"LIBCXXABI_USE_LLVM_UNWINDER": "ON",
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"LIBCXXABI_ENABLE_STATIC_UNWINDER": "ON",
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"LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY": "ON",
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"LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY": "ON",
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"LIBCXXABI_ENABLE_SHARED": "OFF",
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"CMAKE_C_COMPILER_TARGET": os.environ["TARGET"],
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"CMAKE_CXX_COMPILER_TARGET": os.environ["TARGET"],
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"CMAKE_ASM_COMPILER_TARGET": os.environ["TARGET"],
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# Common
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"CMAKE_POSITION_INDEPENDENT_CODE": "ON",
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}
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class LibCXX(ConanFile):
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name = "libcxx"
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settings = "os", "arch", "compiler", "build_type"
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version = get_version("llvm")
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def build_requirements(self):
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self.requires(f"llvm-source/{self.version}@{self.user}/{self.channel}")
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self.requires(
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f"stage1-sysroot/{get_version('llvm')}@{self.user}/{self.channel}"
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)
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self.tool_requires(f"cmake/{get_version('cmake')}@{self.user}/{self.channel}")
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self.tool_requires(f"ninja/{get_version('ninja')}@{self.user}/{self.channel}")
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@property
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def buildenv(self):
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return self.buildenv_info.vars(self, scope="build")
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def add_compiler_options(self, opts):
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tc_dir = Path(self.dependencies["stage1-sysroot"].package_folder)
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opts["CMAKE_C_COMPILER"] = str(tc_dir / "bin" / "clang")
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opts["CMAKE_CXX_COMPILER"] = str(tc_dir / "bin" / "clang++")
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opts["LLVM_CONFIG_PATH"] = str(tc_dir / "bin" / "llvm-config")
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target = os.environ["TARGET"]
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opts["CMAKE_C_COMPILER_TARGET"] = target
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opts["CMAKE_CXX_COMPILER_TARGET"] = target
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opts["CMAKE_SYSROOT"] = str(tc_dir)
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opts["CMAKE_EXE_LINKER_FLAGS"] = f"-Wl,-rpath,{str(tc_dir)}/lib/{target}"
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opts["CMAKE_SHARED_LINKER_FLAGS"] = f"-Wl,-rpath,{str(tc_dir)}/lib/{target}"
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# opts["CMAKE_C_FLAGS"] = "-v"
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# opts["CMAKE_CXX_FLAGS"] = "-v"
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def add_runtimes_and_builtins(self, opts):
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builtin_targets = []
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target = os.environ["TARGET"]
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sysroot_path = Path(self.dependencies["stage1-sysroot"].package_folder)
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target_builtin_opts = {
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"CMAKE_SYSTEM_NAME": "Linux",
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"CMAKE_BUILD_TYPE": "Release",
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"CMAKE_SYSTEM_PROCESSOR": "X86_64",
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"CMAKE_C_FLAGS": self.buildenv.get("CFLAGS", ""),
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"CMAKE_CXX_FLAGS": self.buildenv.get("CXXFLAGS", ""),
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"CMAKE_ASM_FLAGS": self.buildenv.get("ASFLAGS", ""),
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"CMAKE_C_COMPILER_TARGET": target,
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"CMAKE_CXX_COMPILER_TARGET": target,
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"CMAKE_ASM_COMPILER_TARGET": target,
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"CMAKE_TRY_COMPILE_TARGET_TYPE": "STATIC_LIBRARY",
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"CMAKE_EXE_LINKER_FLAGS": f"--target={target} {self.buildenv.get('LDFLAGS', '')}",
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"CMAKE_SHARED_LINKER_FLAGS": f"--target={target} {self.buildenv.get('LDFLAGS', '')}",
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"CMAKE_SYSROOT": str(sysroot_path),
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"CMAKE_INSTALL_RPATH": "\$ORIGIN/../lib",
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"CMAKE_BUILD_WITH_INSTALL_RPATH": "ON",
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"LLVM_USE_LINKER": "lld",
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"COMPILER_RT_BAREMETAL_BUILD": "ON",
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"COMPILER_RT_DEFAULT_TARGET_ONLY": "ON",
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"LLVM_CCACHE_BUILD": opts["LLVM_CCACHE_BUILD"],
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}
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for k, v in target_builtin_opts.items():
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opts[f"BUILTINS_{target}_{k}"] = v
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target_runtime_opts = {
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"CMAKE_SYSTEM_NAME": "Linux",
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"CMAKE_BUILD_TYPE": "Release",
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"CMAKE_C_FLAGS": self.buildenv.get("CFLAGS", ""),
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"CMAKE_CXX_FLAGS": self.buildenv.get("CXXFLAGS", ""),
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"CMAKE_ASM_FLAGS": self.buildenv.get("ASFLAGS", ""),
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"CMAKE_C_COMPILER_TARGET": target,
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"CMAKE_CXX_COMPILER_TARGET": target,
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"CMAKE_ASM_COMPILER_TARGET": target,
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"CMAKE_TRY_COMPILE_TARGET_TYPE": "STATIC_LIBRARY",
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"CMAKE_EXE_LINKER_FLAGS": f"--target={target} {self.buildenv.get('LDFLAGS', '')}",
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"CMAKE_SHARED_LINKER_FLAGS": f"--target={target} {self.buildenv.get('LDFLAGS', '')}",
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"CMAKE_INSTALL_RPATH": "\$ORIGIN/../lib",
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"CMAKE_BUILD_WITH_INSTALL_RPATH": "ON",
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"CMAKE_SYSROOT": str(sysroot_path),
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"CMAKE_VERBOSE_MAKEFILE": "ON",
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"CMAKE_POSITION_INDEPENDENT_CODE": "ON",
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"LLVM_USE_LINKER": "lld",
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"LLVM_USE_LTO": "ON",
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"LLVM_CCACHE_BUILD": opts["LLVM_CCACHE_BUILD"],
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# TODO: Check for more sanitizers that work with musl
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"COMPILER_RT_SANITIZERS_TO_BUILD": "asan;msan;tsan",
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"COMPILER_RT_USE_BUILTINS_LIBRARY": "ON",
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"COMPILER_RT_USE_LIBCXX": "ON",
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"COMPILER_RT_BUILD_SANITIZERS": "ON",
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# For some reason this flag is not correctly set if we don't
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# manually set it and some strange gnu only LDFLAGS are injected.
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"COMPILER_RT_HAS_GNU_VERSION_SCRIPT_COMPAT": "OFF",
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# X-Ray doesn't seem to compiler with musl
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"COMPILER_RT_BUILD_XRAY": "OFF",
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# Only build these if we enable sanitizers since they depend
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# on the sanitizer common runtime
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"COMPILER_RT_BUILD_MEMPROF": "ON",
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"COMPILER_RT_BUILD_LIBFUZZER": "ON",
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# ORC is the JIT component of LLVM - we don't need that.
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"COMPILER_RT_BUILD_ORC": "OFF",
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# Make sure we use libc++ from the tree instead from the system.
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"SANITIZER_CXX_ABI": "libc++",
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"SANITIZER_CXX_ABI_INTREE": "ON",
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"LIBCXX_CXX_ABI": "libcxxabi",
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"LIBCXX_USE_COMPILER_RT": "ON",
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"LIBCXX_ENABLE_STATIC_ABI_LIBRARY": "ON",
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"LIBCXX_ABI_UNSTABLE": "ON",
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"LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY": "ON",
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"LIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY": "ON",
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"LIBCXX_ABI_VERSION": "2",
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"LIBCXX_HAS_MUSL_LIBC": "ON",
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# musl doesn't have -latomic
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"LIBCXX_HAS_ATOMIC_LIB": "OFF",
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"LIBCXXABI_ENABLE_THREADS": "ON",
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"LIBCXXABI_HAS_CXA_THREAD_ATEXIT_IMPL": "OFF",
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"LIBCXXABI_USE_COMPILER_RT": "ON",
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"LIBCXXABI_USE_LLVM_UNWINDER": "ON",
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"LIBCXXABI_ENABLE_STATIC_UNWINDER": "ON",
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"LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY": "ON",
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"LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY": "ON",
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"LIBCXXABI_ENABLE_SHARED": "OFF",
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"LIBUNWIND_USE_COMPILER_RT": "ON",
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}
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for k, v in target_runtime_opts.items():
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opts[f"RUNTIMES_{target}_{k}"] = v
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opts["LLVM_RUNTIME_TARGETS"] = target
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opts["LLVM_BUILTIN_TARGETS"] = target
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opts["LLVM_ENABLE_RUNTIMES"] = ";".join(RUNTIME_TARGETS)
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def generate(self):
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tc = CMakeToolchain(self)
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tc.preprocessor_definitions["_LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE"] = ""
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tc.preprocessor_definitions["_LIBCPP_HAS_MUSL_LIBC"] = "ON"
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tc.generate()
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deps = CMakeDeps(self)
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deps.set_property("zlib", "cmake_find_mode", "both")
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deps.generate()
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def build(self):
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opts = CMAKE_OPTIONS.copy()
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sysroot = self.dependencies["stage1-sysroot"].package_folder
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self.add_compiler_options(opts)
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# zlib_dir = self.dependencies["zlib"].package_folder
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opts["ZLIB_ROOT"] = sysroot
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opts[
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"CMAKE_REQUIRED_INCLUDES"
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] = f"{sysroot}/lib/clang/17/include {sysroot}/include"
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opts["CMAKE_REQUIRED_LIBRARIES"] = f"-L{sysroot}/lib -lz"
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self.add_runtimes_and_builtins(opts)
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for target in opts["LLVM_RUNTIME_TARGETS"].split(";"):
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extra_target = None
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bin_dir = Path(self.package_folder) / "bin"
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bin_dir.mkdir(exist_ok=True, parents=True)
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opts["LLVM_ENABLE_PROJECTS"] = ";".join(PROJECTS)
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opts["LLVM_DISTRIBUTION_COMPONENTS"] = ";".join(TOOLCHAIN_TARGETS)
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stage1 = Path(self.dependencies["stage1-sysroot"].package_folder)
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opts["LLVM_TABLEGEN"] = str(stage1 / "bin" / "llvm-tblgen")
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opts["CLANG_TABLEGEN"] = str(stage1 / "bin" / "clang-tblgen")
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llvm_dir = self.dependencies["llvm-source"].buildenv_info.vars(
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self, scope="build"
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)
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build_dir = os.path.join(self.build_folder, "build")
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os.makedirs(build_dir)
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with current_dir(build_dir):
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cm = CMake(self)
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cm.configure(
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opts,
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build_script_folder=os.path.join(
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llvm_dir["LLVM_SOURCE_DIR"], "runtimes"
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),
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)
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cm.build(target="cxx")
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cm.build(target="cxxabi")
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cm.build(target="unwind")
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cm.build(target="install-cxx")
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cm.build(target="install-cxxabi")
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cm.build(target="install-unwind")
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# cm.build(target="install-distribution-stripped", args=["-v"])
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def package_info(self):
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# self.buildenv_info.PATH.append(os.path.join(self.package_folder, "bin"))
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self.buildenv_info.prepend_path(
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"LD_LIBRARY_PATH", os.path.join(self.package_folder, "lib")
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)
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