/* Support signed or unsigned plain-char */
-#if '\0'-1 > 0
+#if '\xff' > 0
#define CHAR_MIN 0
#define CHAR_MAX 255
#else
|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define PIPE_BUF 4096
-#ifdef PAGE_SIZE
-#define PAGESIZE PAGE_SIZE
-#endif
#define FILESIZEBITS 64
#define NAME_MAX 255
-#define SYMLINK_MAX 255
#define PATH_MAX 4096
-#define NZERO 20
#define NGROUPS_MAX 32
#define ARG_MAX 131072
#define IOV_MAX 1024
#define WORD_BIT 32
#define SSIZE_MAX LONG_MAX
#define TZNAME_MAX 6
-#define TTY_NAME_MAX 20
+#define TTY_NAME_MAX 32
#define HOST_NAME_MAX 255
/* Implementation choices... */
#define RE_DUP_MAX 255
#define NL_ARGMAX 9
-#define NL_LANGMAX 32
#define NL_MSGMAX 32767
-#define NL_NMAX (MB_LEN_MAX*4)
#define NL_SETMAX 255
#define NL_TEXTMAX 2048
#endif
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_XOPEN_SOURCE)
+
+#ifdef PAGESIZE
+#define PAGE_SIZE PAGESIZE
+#endif
+#define NZERO 20
+#define NL_LANGMAX 32
+
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
+ || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
+
+#define NL_NMAX 16
+
+#endif
+
/* POSIX/SUS requirements follow. These numbers come directly
* from SUS and have nothing to do with the host system. */