llvm/utils/gn/secondary/libcxxabi/src/BUILD.gn

   1 import("//clang/runtimes.gni")
   2
   3 declare_args() {
   4   # Use exceptions.
   5   libcxxabi_enable_exceptions = true
   6
   7   # Build libc++abi with definitions for operator new/delete.
   8   libcxxabi_enable_new_delete_definitions = true
   9
  10   # Build libcxxabi as a shared library.
  11   libcxxabi_enable_shared = true
  12
  13   # Build libcxxabi as a static library.
  14   libcxxabi_enable_static = true
  15
  16   # Do not export any symbols from the static library.
  17   libcxxabi_hermetic_static_library = true
  18 }
  19
  20 cxxabi_headers = [
  21   # Make `gn format` not collapse this, for sync_source_lists_from_cmake.py.
  22   "../include/cxxabi.h",
  23 ]
  24
  25 cxxabi_sources = [
  26   # C++ABI files
  27   "cxa_aux_runtime.cpp",
  28   "cxa_default_handlers.cpp",
  29   "cxa_demangle.cpp",
  30   "cxa_exception_storage.cpp",
  31   "cxa_guard.cpp",
  32   "cxa_handlers.cpp",
  33   "cxa_vector.cpp",
  34   "cxa_virtual.cpp",
  35
  36   # C++ STL files
  37   "stdlib_exception.cpp",
  38   "stdlib_stdexcept.cpp",
  39   "stdlib_typeinfo.cpp",
  40
  41   # Internal files
  42   "abort_message.cpp",
  43   "fallback_malloc.cpp",
  44   "private_typeinfo.cpp",
  45 ]
  46 if (libcxxabi_enable_new_delete_definitions) {
  47   cxxabi_sources += [ "stdlib_new_delete.cpp" ]
  48 }
  49 if (libcxxabi_enable_exceptions) {
  50   cxxabi_sources += [
  51     "cxa_exception.cpp",
  52     "cxa_personality.cpp",
  53   ]
  54 } else {
  55   cxxabi_sources += [ "cxa_noexception.cpp" ]
  56 }
  57 if (target_os == "linux" || target_os == "fuchsia") {
  58   cxxabi_sources += [ "cxa_thread_atexit.cpp" ]
  59 }
  60
  61 config("cxxabi_config") {
  62   include_dirs = [
  63     "//libcxxabi/include",
  64
  65     # Some files depend on libc++ internals.
  66     "//libcxx/src",
  67   ]
  68   cflags_cc = [
  69     "-std=c++20",
  70     "-nostdinc++",
  71   ]
  72   defines = [
  73     "_LIBCXXABI_BUILDING_LIBRARY",
  74     "_LIBCPP_BUILDING_LIBRARY",
  75   ]
  76   if (target_os == "win") {
  77     defines += [ "_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS" ]
  78   }
  79 }
  80
  81 if (libcxxabi_enable_shared) {
  82   shared_library("cxxabi_shared") {
  83     output_dir = runtimes_dir
  84     output_name = "c++abi"
  85     if (target_os == "linux" || target_os == "mac") {
  86       cflags = [ "-fPIC" ]
  87       ldflags = [ "-nostdlib++" ]
  88       libs = [
  89         "dl",
  90         "pthread",
  91       ]
  92     }
  93     sources = cxxabi_sources
  94     public = cxxabi_headers
  95     deps = [
  96       "//compiler-rt/lib/builtins",
  97       "//libcxx/include",
  98       "//libunwind/src:unwind_shared",
  99     ]
 100     configs += [ ":cxxabi_config" ]
 101     configs -= [
 102       "//llvm/utils/gn/build:no_exceptions",
 103       "//llvm/utils/gn/build:no_rtti",
 104     ]
 105   }
 106 }
 107
 108 if (libcxxabi_enable_static) {
 109   static_library("cxxabi_static") {
 110     output_dir = runtimes_dir
 111     output_name = "c++abi"
 112     complete_static_lib = true
 113     configs -= [ "//llvm/utils/gn/build:thin_archive" ]
 114     sources = cxxabi_sources
 115     public = cxxabi_headers
 116     if (libcxxabi_hermetic_static_library) {
 117       cflags = [ "-fvisibility=hidden" ]
 118       if (libcxxabi_enable_new_delete_definitions) {
 119         cflags_cc = [ "-fvisibility-global-new-delete-hidden" ]
 120       }
 121       defines = [
 122         "_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS",
 123         "_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS",
 124       ]
 125     }
 126     deps = [
 127       "//compiler-rt/lib/builtins",
 128       "//libcxx/include",
 129       "//libunwind/src:unwind_static",
 130     ]
 131     configs += [ ":cxxabi_config" ]
 132     configs -= [
 133       "//llvm/utils/gn/build:no_exceptions",
 134       "//llvm/utils/gn/build:no_rtti",
 135     ]
 136   }
 137 }
 138
 139 group("src") {
 140   deps = []
 141   if (libcxxabi_enable_shared) {
 142     deps += [ ":cxxabi_shared" ]
 143   }
 144   if (libcxxabi_enable_static) {
 145     deps += [ ":cxxabi_static" ]
 146   }
 147 }