1 files changed, 38 insertions, 0 deletions
diff --git a/os.h b/os.h
new file mode 100644
index 000000000000..8316a4c5bb1c
--- /dev/null
+++ b/os.h
@@ -0,0 +1,38 @@
+#include <sys/types.h>
+#include <sys/param.h>	/* This defines BSD */
+#if defined(BSD) && !defined(BSD4_4) && !defined(__osf__)
+# include <stdio.h>
+# include <strings.h>
+# define strchr(a, b)		index((a), (b))
+# define strrchr(a, b)		rindex((a), (b))
+# define memcpy(a, b, c)	bcopy((b), (a), (c))
+# define memzero(a, b)		bzero((a), (b))
+# define memcmp(a, b, c)	bcmp((a), (b), (c))
+#if defined(NeXT)
+  typedef void sigret_t;
+#else
+  typedef int sigret_t;
+#endif
+
+/* system routines that don't return int */
+char *getenv();
+caddr_t malloc();
+
+#else 
+# include <stdio.h>
+# define setbuffer(f, b, s)	setvbuf((f), (b), (b) ? _IOFBF : _IONBF, (s))
+# include <string.h>
+# include <memory.h>
+# include <stdlib.h>
+# define memzero(a, b)		memset((a), 0, (b))
+  typedef void sigret_t;
+#endif
+
+/* some systems declare sys_errlist in stdio.h! */
+#if defined(__NetBSD__) || defined(__FreeBSD__)
+#if !defined(__m68k__)
+#  if !defined(__NetBSD132__)
+#define SYS_ERRLIST_DECLARED
+#  endif	/* __NetBSD132__ */
+#endif
+#endif