build/config/riscv.gni

# Copyright (c) 2020 Project CHIP Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import("//build_overrides/build.gni")

if (current_cpu == "riscv") {
  declare_args() {
    # Build file to import for RISCV defaults.
    riscv_platform_config = ""
  }

  # Allow platforms to override how RISCV architecture flags are chosen by
  # providing a file to import.
  if (riscv_platform_config != "") {
    _platform_defaults = {
      import(riscv_platform_config)
    }
  }

  _defaults = {
    riscv_arch = ""
    riscv_cpu = ""
    riscv_tune = ""
    riscv_fpu = ""
    riscv_float_abi = ""
    riscv_abi = ""

    # Update defaults with platform values, if any.
    if (riscv_platform_config != "") {
      forward_variables_from(_platform_defaults, "*")
    }
  }

  declare_args() {
    # RISCV architecture (value for -march flag).
    riscv_arch = _defaults.riscv_arch

    # RISCV CPU (value for -mcpu flag).
    riscv_cpu = _defaults.riscv_cpu

    # RISCV tuning (value for -mtune flag).
    riscv_tune = _defaults.riscv_tune

    # RISCV FPU (value for -mfpu flag).
    riscv_fpu = _defaults.riscv_fpu

    # RISCV float ABI (value for -mfloat-abi flag).
    riscv_float_abi = _defaults.riscv_float_abi

    # RISCV ABI (value for -mabi flag).
    riscv_abi = _defaults.riscv_abi
  }
}