BUILD.gn

# Copyright (c) 2014 The Native Client Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This is the root build file for GN. GN will start processing by loading this
# file, and recursively load all dependencies until all dependencies are either
# resolved or known not to exist (which will cause the build to fail). So if
# you add a new build file, there must be some path of dependencies from this
# file to your new one or GN won't know about it.
#
# All targets in this file file are built by default.
#
# Here we declare the meta targets which pull in the various architecture
# combinations of the real targets.
#

declare_args() {
  # Trusted architecture
  use_trusted_x86 = (target_cpu == "x86")
  use_trusted_x64 = ((target_cpu == "x64") || (target_os == "win"))
  use_trusted_arm = (target_cpu == "arm")

  # Untrusted architecture
  use_nacl_x86 = (target_cpu == "x86")
  use_nacl_x64 = ((target_cpu == "x64") || (target_os == "win"))
  use_nacl_arm = (target_cpu == "arm")

  # Untrusted libc
  use_gcc_newlib = true
  use_gcc_glibc = false
  use_clang_newlib = false
}

trusted_deps = []

if (use_trusted_x86) {
  group("trusted_x86") {
    deps = [
      "//native_client/src:trusted_targets(//native_client/build/toolchain/$os:trusted_x86)",
    ]
  }
  trusted_deps += [":trusted_x86"]
}

if (use_trusted_x64) {
  group("trusted_x64") {
    deps = [
      "//native_client/src:trusted_targets(//native_client/build/toolchain/$os:trusted_x64)",
    ]
  }
  trusted_deps += [":trusted_x64"]
}

if (use_trusted_arm) {
  group("trusted_arm") {
    deps = [
      "//native_client/src:trusted_targets(//native_client/build/toolchain/$os:trusted_arm)",
    ]
  }
  trusted_deps += [":trusted_arm"]
}

group("trusted") {
  deps = trusted_deps
}

#
# This is the root untrusted target which will build all trusted components
#
group("untrusted") {
  deps = []
  if (use_nacl_x86) {
    if (use_gcc_newlib) {
      deps += [
        "//native_client/src/:untrusted_targets(//native_client/build/toolchain/nacl:newlib_x86)",
      ]
    }
    if (use_gcc_glibc) {
      deps += [
        "//native_client/src/:untrusted_targets(//native_client/build/toolchain/nacl:glibc_x86)"
      ]
    }
    if (use_clang_newlib) {
      deps += [
        "//native_client/src/:untrusted_targets(//native_client/build/toolchain/nacl:clang_newlib_x86)",
      ]
    }
    deps += [
      "//native_client/src/:irt_targets(//native_client/build/toolchain/nacl:irt_x86)"
    ]
  }
  if (use_nacl_x64) {
    if (use_gcc_newlib) {
      deps += [
        "//native_client/src/:untrusted_targets(//native_client/build/toolchain/nacl:newlib_x64)",
      ]
    }
    if (use_gcc_glibc) {
      deps += [
        "//native_client/src/:untrusted_targets(//native_client/build/toolchain/nacl:glibc_x64)"
      ]
    }
    if (use_clang_newlib) {
      deps += [
        "//native_client/src/:untrusted_targets(//native_client/build/toolchain/nacl:clang_newlib_x64)",
      ]
    }
    deps += [
      "//native_client/src/:irt_targets(//native_client/build/toolchain/nacl:irt_x64)"
    ]
  }
  if (use_nacl_arm) {
    if (use_gcc_newlib) {
      deps += [
        "//native_client/src/:untrusted_targets(//native_client/build/toolchain/nacl:newlib_arm)",
      ]
    }
    # No gcc build, yet.
    deps += [
      "//native_client/src/:irt_targets(//native_client/build/toolchain/nacl:irt_arm)"
    ]
  }
}