62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <cstdlib>
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#include <folly/portability/Config.h>
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#if defined(__APPLE__)
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#if __has_include(<crt_externs.h>)
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#include <crt_externs.h> // @manual
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#endif
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#endif
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extern "C" {
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#ifdef _WIN32
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// These are technically supposed to be defined linux/limits.h and
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// sys/param.h respectively, but Windows defines _MAX_PATH in stdlib.h,
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// so, instead of creating two headers for a single define each, we put
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// them here, where they are likely to already have been included in the
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// code that needs them.
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#define PATH_MAX _MAX_PATH
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#define MAXPATHLEN _MAX_PATH
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char* mktemp(char* tn);
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char* mkdtemp(char* tn);
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int mkstemp(char* tn);
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char* realpath(const char* path, char* resolved_path);
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int setenv(const char* name, const char* value, int overwrite);
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int unsetenv(const char* name);
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#elif defined(__APPLE__)
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// environ doesn't work well with dylibs, so use _NSGetEnviron instead.
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#if !__has_include(<crt_externs.h>)
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char*** _NSGetEnviron(void);
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#endif
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#define environ (*_NSGetEnviron())
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#endif
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#if defined(__FreeBSD__)
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// Needed to resolve linkage
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char** environ;
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#endif
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#if !__linux__ && !FOLLY_MOBILE
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int clearenv();
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#endif
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}
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