zircon/system/ulib/mini-process/BUILD.gn

# Copyright 2019 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/cpp/library_headers.gni")
import("//build/toolchain/toolchain_environment.gni")
import("//build/toolchain/zircon/user_basic_redirect.gni")
import("//build/zircon/embedded_blob.gni")
import("//build/zircon/hermetic_code_blob.gni")

library_headers("headers") {
  testonly = true

  headers = [ "mini-process/mini-process.h" ]
}

shared_library("mini-process") {
  testonly = true

  public_deps = [ ":headers" ]

  sources = [ "mini-process.cc" ]
  deps = [
    ":subprocess.basic",
    "//src/lib/elfldltl",
    "//zircon/system/ulib/zx",
  ]
}

user_basic_redirect("subprocess.basic") {
  visibility = [ ":*" ]
  testonly = true

  public_deps = [ ":subprocess" ]
}

embedded_blob("subprocess") {
  visibility = [ ":*" ]
  testonly = true

  sources = [ "$target_out_dir/subprocess.bin" ]
  deps = [ ":subprocess.blob" ]
  public_deps = [ ":subprocess.blob.public" ]
}

hermetic_code_blob("subprocess.blob") {
  visibility = [ ":*" ]
  testonly = true

  output_name = "subprocess"
  public = [ "subprocess.h" ]
  public_deps = [ "//zircon/system/public" ]

  allow_rodata = true

  entrypoint = "minipr_thread_loop"
  sources = [ "subprocess.cc" ]
  deps = [
    ":headers",
    "//src/lib/debug:backtrace-request",
    "//src/zircon/lib/zircon:headers",
    "//zircon/system/ulib/c/string:hermetic",
  ]

  # This target is built without `//` in the default include dirs but
  # backtrace-request is included using an absolute path.
  include_dirs = [ "//" ]

  # TODO(https://fxbug.dev/42079915): LLD lets --no-pie trump the code generation
  # switches, but this needs to be compiled as PIC though linked differently.
  if (toolchain_variant.tags + [ "lto" ] - [ "lto" ] !=
      toolchain_variant.tags) {
    ldflags = [ "-Wl,-mllvm,-relocation-model=pic" ]
  }
}