/* Emulate getpagesize on systems that lack it. */ #ifndef HAVE_GETPAGESIZE #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #ifdef _SC_PAGESIZE #define getpagesize() sysconf(_SC_PAGESIZE) #else #include <sys/param.h> #ifdef EXEC_PAGESIZE #define getpagesize() EXEC_PAGESIZE #else #ifdef NBPG #define getpagesize() NBPG * CLSIZE #ifndef CLSIZE #define CLSIZE 1 #endif /* no CLSIZE */ #else /* no NBPG */ #ifdef PAGESIZE #define getpagesize() PAGESIZE #else /* no PAGESIZE */ #ifdef NBPC #define getpagesize() NBPC #endif #endif /* PAGESIZE */ #endif /* no NBPG */ #endif /* no EXEC_PAGESIZE */ #endif /* no _SC_PAGESIZE */ #endif /* not HAVE_GETPAGESIZE */