physfs/physfs_platforms.h

#ifndef _INCL_PHYSFS_PLATFORMS
#define _INCL_PHYSFS_PLATFORMS

#ifndef __PHYSICSFS_INTERNAL__
#error Do not include this header from your applications.
#endif

/*
 * These only define the platforms to determine which files in the platforms
 *  directory should be compiled. For example, technically BeOS can be called
 *  a "unix" system, but since it doesn't use unix.c, we don't define
 *  PHYSFS_PLATFORM_UNIX on that system.
 */

#if ((defined __BEOS__) || (defined __beos__))
#  define PHYSFS_PLATFORM_BEOS
#  define PHYSFS_PLATFORM_POSIX
#elif (defined _WIN32_WCE) || (defined _WIN64_WCE)
#  define PHYSFS_PLATFORM_POCKETPC
#elif (((defined _WIN32) || (defined _WIN64)) && (!defined __CYGWIN__))
#  define PHYSFS_PLATFORM_WINDOWS
#elif (defined OS2)
#  define PHYSFS_PLATFORM_OS2
#elif ((defined __MACH__) && (defined __APPLE__))
#  define PHYSFS_PLATFORM_MACOSX
#  define PHYSFS_PLATFORM_POSIX
#elif defined(macintosh)
#  error Classic Mac OS support was dropped from PhysicsFS 2.0. Move to OS X.
#elif defined(unix)
#  define PHYSFS_PLATFORM_UNIX
#  define PHYSFS_PLATFORM_POSIX
#else
#  error Unknown platform.
#endif

#endif  /* include-once blocker. */