#ifndef __PUZZLE_COMMON_H__ #define __PUZZLE_COMMON_H__ 1 #include #ifdef STDC_HEADERS # include # include # include #else # if HAVE_STDLIB_H # include # endif #endif #include #ifdef HAVE_STRING_H # if !STDC_HEADERS && HAVE_MEMORY_H # include # endif # include #else # if HAVE_STRINGS_H # include # endif #endif #include #include #ifdef HAVE_UNISTD_H # include #endif #include #ifndef errno extern int errno; #endif #endif