import("//clang/lib/ARCMigrate/enable.gni")
import("//clang/tools/libclang/include_clang_tools_extra.gni")
import("//llvm/version.gni")

# This build file is just enough to get check-clang to pass, it's missing
# several things from the CMake build:
# - using libclang.exports
# - a build target copying the Python bindings
# - the GN linux build always builds without -fPIC (as if LLVM_ENABLE_PIC=OFF
#   in the CMake build), so libclang is always a static library on linux
# - the GN build doesn't have LIBCLANG_BUILD_STATIC

libclang_target_type = "shared_library"
if (host_os != "win" && host_os != "mac") {
  # ELF targets need -fPIC to build shared libs but they aren't on by default.
  # For now, make libclang a static lib there.
  libclang_target_type = "static_library"
}

target(libclang_target_type, "libclang") {
  configs += [ "//llvm/utils/gn/build:clang_code" ]
  deps = [
    "//clang/include/clang/Config",
    "//clang/lib/AST",
    "//clang/lib/Basic",
    "//clang/lib/Frontend",
    "//clang/lib/Headers",
    "//clang/lib/Index",
    "//clang/lib/Lex",
    "//clang/lib/Sema",
    "//clang/lib/Tooling",
    "//llvm/include/llvm/Config:llvm-config",
    "//llvm/lib/IR",
    "//llvm/lib/Support",
    "//llvm/lib/Target:TargetsToBuild",
  ]
  if (clang_enable_arcmt) {
    deps += [ "//clang/lib/ARCMigrate" ]
  }

  defines = []

  # FIXME: Once the GN build has a way to select which bits to build,
  # only include this dependency if clang-tools-extra is part of the build.
  if (libclang_include_clang_tools_extra) {
    defines += [ "CLANG_TOOL_EXTRA_BUILD" ]
    deps += [
      "//clang-tools-extra/clang-include-fixer/plugin",
      "//clang-tools-extra/clang-tidy/plugin",
    ]
  }

  if (host_os == "win") {
    defines += [ "_CINDEX_LIB_" ]
  }

  sources = [
    "../../include/clang-c/Index.h",
    "ARCMigrate.cpp",
    "BuildSystem.cpp",
    "CIndex.cpp",
    "CIndexCXX.cpp",
    "CIndexCodeCompletion.cpp",
    "CIndexDiagnostic.cpp",
    "CIndexDiagnostic.h",
    "CIndexHigh.cpp",
    "CIndexInclusionStack.cpp",
    "CIndexUSRs.cpp",
    "CIndexer.cpp",
    "CIndexer.h",
    "CXComment.cpp",
    "CXCompilationDatabase.cpp",
    "CXCursor.cpp",
    "CXCursor.h",
    "CXIndexDataConsumer.cpp",
    "CXLoadedDiagnostic.cpp",
    "CXLoadedDiagnostic.h",
    "CXSourceLocation.cpp",
    "CXSourceLocation.h",
    "CXStoredDiagnostic.cpp",
    "CXString.cpp",
    "CXString.h",
    "CXTranslationUnit.h",
    "CXType.cpp",
    "CXType.h",
    "FatalErrorHandler.cpp",
    "Index_Internal.h",
    "Indexing.cpp",
    "Rewrite.cpp",
  ]
  if (host_os == "mac") {
    ldflags = [
      "-Wl,-compatibility_version,1",
      "-Wl,-current_version,$llvm_version",

      # See llvm_setup_rpath() in CMake.
      "-Wl,-install_name,@rpath/libclang.dylib",
      "-Wl,-rpath,@loader_path/../lib",
    ]
  }

  # FIXME: Use libclang.exports
}