utils/bazel/llvm-project-overlay/llvm/config.bzl

   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
   7 load(
   8     "//:vars.bzl",
   9     "LLVM_VERSION_MAJOR",
  10     "LLVM_VERSION_MINOR",
  11     "LLVM_VERSION_PATCH",
  12     "PACKAGE_VERSION",
  13 )
  14
  15 def 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
  29 posix_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
  48 linux_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
  55 macos_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
  63 win32_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.
  81 os_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.
  91 builtin_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.
  98 llvm_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 ]