# Copyright 2020 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.

# Define a number of global variables that are normally defined by the Zircon
# build system. This should only be used when processing Zircon-specific target
# rules under //zircon/ which invoke zx_library() or zx_host_tool()

# `is_gcc` is true for GCC-based toolchains.
is_gcc =
    toolchain_variant.tags + [ "gcc" ] - [ "gcc" ] != toolchain_variant.tags

# `is_kernel` is true for kernel-specific toolchains.
is_kernel = toolchain_variant.tags + [ "kernel" ] - [ "kernel" ] !=
            toolchain_variant.tags

# `toolchain` is a scope used by the Zircon build to describe the current toolchain.
# Its layout is very different from `toolchain_variant` so try to mimic it here.
toolchain = {
  if (zircon_toolchain != false) {
    environment = zircon_toolchain.environment
  } else if (is_fuchsia) {
    environment = "user"
  } else if (is_host) {
    environment = "host"
  } else {
    environment = "unknown"
  }
}

# This is the name for $current_cpu that's used in Zircon file names.
if (current_cpu == "x64") {
  zircon_cpu = "x86"
} else if (current_cpu != "") {
  zircon_cpu = current_cpu
}