xref: /aosp_15_r20/external/libtextclassifier/native/utils/base/config.h (revision 993b0882672172b81d12fad7a7ac0c3e5c824a12)

/*
 * Copyright (C) 2018 The Android Open Source Project
 *
 * 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.
 */

// Define macros to indicate C++ standard / platform / etc we use.

#ifndef LIBTEXTCLASSIFIER_UTILS_BASE_CONFIG_H_
#define LIBTEXTCLASSIFIER_UTILS_BASE_CONFIG_H_

namespace libtextclassifier3 {

// Define LANG_CXX11 to 1 if current compiler supports C++11.
//
// GXX_EXPERIMENTAL_CXX0X is defined by gcc and clang up to at least
// gcc-4.7 and clang-3.1 (2011-12-13).  __cplusplus was defined to 1
// in gcc before 4.7 (Crosstool 16) and clang before 3.1, but is
// defined according to the language version in effect thereafter.
// Microsoft Visual Studio 14 (2015) sets __cplusplus==199711 despite
// reasonably good C++11 support, so we set LANG_CXX for it and
// newer versions (_MSC_VER >= 1900).
#if (defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L || \
     (defined(_MSC_VER) && _MSC_VER >= 1900))
// Define this to 1 if the code is compiled in C++11 mode; leave it
// undefined otherwise.  Do NOT define it to 0 -- that causes
// '#ifdef LANG_CXX11' to behave differently from '#if LANG_CXX11'.
#define LANG_CXX11 1
#endif

}  // namespace libtextclassifier3

#endif  // LIBTEXTCLASSIFIER_UTILS_BASE_CONFIG_H_