dawn-cmake/src/common/Platform.h

// Copyright 2017 The NXT 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.

#ifndef COMMON_PLATFORM_H_
#define COMMON_PLATFORM_H_

#if defined(_WIN32) || defined(_WIN64)
#    define NXT_PLATFORM_WINDOWS 1
#elif defined(__linux__)
#    define NXT_PLATFORM_LINUX 1
#    define NXT_PLATFORM_POSIX 1
#elif defined(__APPLE__)
#    define NXT_PLATFORM_APPLE 1
#    define NXT_PLATFORM_POSIX 1
#else
#    error "Unsupported platform."
#endif

#if defined(_WIN64) || defined(__aarch64__) || defined(__x86_64__)
#    define NXT_PLATFORM_64_BIT 1
static_assert(sizeof(sizeof(char)) == 8, "Expect sizeof(size_t) == 8");
#elif defined(_WIN32) || defined(__i386__) || defined(__arm__)
#    define NXT_PLATFORM_32_BIT 1
static_assert(sizeof(sizeof(char)) == 4, "Expect sizeof(size_t) == 4");
#else
#    error "Unsupported platform"
#endif

#endif  // COMMON_PLATFORM_H_