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- /*
- * Copyright 2016-present Facebook, Inc.
- *
- * 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.
- */
- #pragma once
- #include <cstdlib>
- #if defined(__APPLE__)
- #if __has_include(<crt_externs.h>)
- #include <crt_externs.h> // @manual
- #endif
- #endif
- extern "C" {
- #ifdef _WIN32
- // These are technically supposed to be defined linux/limits.h and
- // sys/param.h respectively, but Windows defines _MAX_PATH in stdlib.h,
- // so, instead of creating two headers for a single define each, we put
- // them here, where they are likely to already have been included in the
- // code that needs them.
- #define PATH_MAX _MAX_PATH
- #define MAXPATHLEN _MAX_PATH
- char* mktemp(char* tn);
- char* mkdtemp(char* tn);
- int mkstemp(char* tn);
- char* realpath(const char* path, char* resolved_path);
- int setenv(const char* name, const char* value, int overwrite);
- int unsetenv(const char* name);
- #elif defined(__APPLE__)
- // environ doesn't work well with dylibs, so use _NSGetEnviron instead.
- #if !__has_include(<crt_externs.h>)
- char*** _NSGetEnviron(void);
- #endif
- #define environ (*_NSGetEnviron())
- #endif
- #if !__linux__ && !FOLLY_MOBILE
- int clearenv();
- #endif
- }
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