Stripped down the library to something approaching the ANSI C minimum and replaced most of the header files, to provide a reasonably consistent base to work up from.

lang/cem/libcc.ansi/headers/errno.h

@@ -3,18 +3,51 @@
  */
 /* $Id$ */
 
-#if	!defined(_ERRNO_H)
+#ifndef _ERRNO_H
 #define	_ERRNO_H
 
-#include	<sys/errno.h>
+/* These values are defined by the ANSI standard. */
 
-/* The standard requires the next two definitions. If they are also in
- * <sys/errno.h>, their values should be equal. The <sys/errno.h> supplied
- * with the compiler doesn't contain them.
- */
-#define	EDOM		33	/* math arg out of domain of func */
-#define	ERANGE		34	/* math result not representable */
+#define EDOM    33
+#define ERANGE  34
+#define EILSEQ  88
 
-extern int errno;		/* error number */
+/* These are not, but most platforms standardise on these numbers, so we
+ * define them here. */
+ 
+#define	EPERM		1	/* Not owner */
+#define	ENOENT		2	/* No such file or directory */
+#define	ESRCH		3	/* No such process */
+#define	EINTR		4	/* Interrupted system call */
+#define	EIO	        5	/* I/O error */
+#define	ENXIO		6	/* No such device or address */
+#define	E2BIG		7	/* Arg list too long */
+#define	ENOEXEC		8	/* Exec format error */
+#define	EBADF		9	/* Bad file number */
+#define	ECHILD		10	/* No children */
+#define	EAGAIN		11	/* No more processes */
+#define	ENOMEM		12	/* Not enough core */
+#define	EACCES		13	/* Permission denied */
+#define	EFAULT		14	/* Bad address */
+#define	ENOTBLK		15	/* Block device required */
+#define	EBUSY		16	/* Mount device busy */
+#define	EEXIST		17	/* File exists */
+#define	EXDEV		18	/* Cross-device link */
+#define	ENODEV		19	/* No such device */
+#define	ENOTDIR		20	/* Not a directory*/
+#define	EISDIR		21	/* Is a directory */
+#define	EINVAL		22	/* Invalid argument */
+#define	ENFILE		23	/* File table overflow */
+#define	EMFILE		24	/* Too many open files */
+#define	ENOTTY		25	/* Not a typewriter */
+#define	ETXTBSY		26	/* Text file busy */
+#define	EFBIG		27	/* File too large */
+#define	ENOSPC		28	/* No space left on device */
+#define	ESPIPE		29	/* Illegal seek */
+#define	EROFS		30	/* Read-only file system */
+#define	EMLINK		31	/* Too many links */
+#define	EPIPE		32	/* Broken pipe */
+ 
+extern int errno;
 
-#endif	/* _ERRNO_H */
+#endif