1# This file is licensed under the Apache License v2.0 with LLVM Exceptions. 2# See https://llvm.org/LICENSE.txt for license information. 3# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 4 5"""Defines variables that use selects to configure LLVM based on platform.""" 6 7load( 8 "//:vars.bzl", 9 "LLVM_VERSION_MAJOR", 10 "LLVM_VERSION_MINOR", 11 "LLVM_VERSION_PATCH", 12 "PACKAGE_VERSION", 13) 14 15def native_arch_defines(arch, triple): 16 return [ 17 r'LLVM_NATIVE_ARCH=\"{}\"'.format(arch), 18 "LLVM_NATIVE_ASMPARSER=LLVMInitialize{}AsmParser".format(arch), 19 "LLVM_NATIVE_ASMPRINTER=LLVMInitialize{}AsmPrinter".format(arch), 20 "LLVM_NATIVE_DISASSEMBLER=LLVMInitialize{}Disassembler".format(arch), 21 "LLVM_NATIVE_TARGET=LLVMInitialize{}Target".format(arch), 22 "LLVM_NATIVE_TARGETINFO=LLVMInitialize{}TargetInfo".format(arch), 23 "LLVM_NATIVE_TARGETMC=LLVMInitialize{}TargetMC".format(arch), 24 "LLVM_NATIVE_TARGETMCA=LLVMInitialize{}TargetMCA".format(arch), 25 r'LLVM_HOST_TRIPLE=\"{}\"'.format(triple), 26 r'LLVM_DEFAULT_TARGET_TRIPLE=\"{}\"'.format(triple), 27 ] 28 29posix_defines = [ 30 "LLVM_ON_UNIX=1", 31 "HAVE_BACKTRACE=1", 32 "BACKTRACE_HEADER=<execinfo.h>", 33 r'LTDL_SHLIB_EXT=\".so\"', 34 r'LLVM_PLUGIN_EXT=\".so\"', 35 "LLVM_ENABLE_THREADS=1", 36 "HAVE_DEREGISTER_FRAME=1", 37 "HAVE_LIBPTHREAD=1", 38 "HAVE_PTHREAD_GETNAME_NP=1", 39 "HAVE_PTHREAD_H=1", 40 "HAVE_PTHREAD_SETNAME_NP=1", 41 "HAVE_REGISTER_FRAME=1", 42 "HAVE_SETENV_R=1", 43 "HAVE_STRERROR_R=1", 44 "HAVE_SYSEXITS_H=1", 45 "HAVE_UNISTD_H=1", 46] 47 48linux_defines = posix_defines + [ 49 "_GNU_SOURCE", 50 "HAVE_MALLINFO=1", 51 "HAVE_SBRK=1", 52 "HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC=1", 53] 54 55macos_defines = posix_defines + [ 56 "HAVE_MACH_MACH_H=1", 57 "HAVE_MALLOC_MALLOC_H=1", 58 "HAVE_MALLOC_ZONE_STATISTICS=1", 59 "HAVE_PROC_PID_RUSAGE=1", 60 "HAVE_UNW_ADD_DYNAMIC_FDE=1", 61] 62 63win32_defines = [ 64 # Windows system library specific defines. 65 "_CRT_SECURE_NO_DEPRECATE", 66 "_CRT_SECURE_NO_WARNINGS", 67 "_CRT_NONSTDC_NO_DEPRECATE", 68 "_CRT_NONSTDC_NO_WARNINGS", 69 "_SCL_SECURE_NO_DEPRECATE", 70 "_SCL_SECURE_NO_WARNINGS", 71 "UNICODE", 72 "_UNICODE", 73 74 # LLVM features 75 r'LTDL_SHLIB_EXT=\".dll\"', 76 r'LLVM_PLUGIN_EXT=\".dll\"', 77] 78 79# TODO: We should switch to platforms-based config settings to make this easier 80# to express. 81os_defines = select({ 82 "@bazel_tools//src/conditions:windows": win32_defines, 83 "@bazel_tools//src/conditions:darwin": macos_defines, 84 "@bazel_tools//src/conditions:freebsd": posix_defines, 85 "//conditions:default": linux_defines, 86}) 87 88# HAVE_BUILTIN_THREAD_POINTER is true for on Linux (outside of ppc64) for 89# all recent toolchains. Add it here by default on Linux as we can't perform a 90# configure time check. 91builtin_thread_pointer = select({ 92 "@bazel_tools//src/conditions:linux_ppc64le": [], 93 "@bazel_tools//src/conditions:linux": ["HAVE_BUILTIN_THREAD_POINTER"], 94 "//conditions:default": [], 95}) 96 97# TODO: We should split out host vs. target here. 98llvm_config_defines = os_defines + builtin_thread_pointer + select({ 99 "@bazel_tools//src/conditions:windows": native_arch_defines("X86", "x86_64-pc-win32"), 100 "@bazel_tools//src/conditions:darwin_arm64": native_arch_defines("AArch64", "arm64-apple-darwin"), 101 "@bazel_tools//src/conditions:darwin_x86_64": native_arch_defines("X86", "x86_64-unknown-darwin"), 102 "@bazel_tools//src/conditions:linux_aarch64": native_arch_defines("AArch64", "aarch64-unknown-linux-gnu"), 103 "@bazel_tools//src/conditions:linux_ppc64le": native_arch_defines("PowerPC", "powerpc64le-unknown-linux-gnu"), 104 "@bazel_tools//src/conditions:linux_s390x": native_arch_defines("SystemZ", "systemz-unknown-linux_gnu"), 105 "//conditions:default": native_arch_defines("X86", "x86_64-unknown-linux-gnu"), 106}) + [ 107 "LLVM_VERSION_MAJOR={}".format(LLVM_VERSION_MAJOR), 108 "LLVM_VERSION_MINOR={}".format(LLVM_VERSION_MINOR), 109 "LLVM_VERSION_PATCH={}".format(LLVM_VERSION_PATCH), 110 r'LLVM_VERSION_STRING=\"{}\"'.format(PACKAGE_VERSION), 111 # These shouldn't be needed by the C++11 standard, but are for some 112 # platforms (e.g. glibc < 2.18. See 113 # https://sourceware.org/bugzilla/show_bug.cgi?id=15366). These are also 114 # included unconditionally in the CMake build: 115 # https://github.com/llvm/llvm-project/blob/cd0dd8ece8e/llvm/cmake/modules/HandleLLVMOptions.cmake#L907-L909 116 "__STDC_LIMIT_MACROS", 117 "__STDC_CONSTANT_MACROS", 118 "__STDC_FORMAT_MACROS", 119] 120