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#ifndef ENVIRON_H
#define ENVIRON_H
#include <stdlib.h>

#ifdef _WIN32
#undef environ
#define environ _environ
#endif  // _WIN32

// POSIX standard oddly requires users to define environ variable
// themselves. 3 of 3 bsd-derived systems I tested on actually
// don't bother having environ in their headers. Relevant ticket has
// been closed as "won't fix" in FreeBSD ticket tracker:
// https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238672
//
// Just in case, we wrap this declaration with ifdef, so that if
// anyone has environ as macro (see windows case above), we won't be
// breaking anything.
#if !defined(environ)
extern "C" {
extern char** environ;
}
#endif

#endif  // ENVIRON_H
