+/* USE_STDIO_BASE:
+ * This symbol is defined if the _base field (or similar) of the
+ * stdio FILE structure can be used to access the stdio buffer for
+ * a file handle. If this is defined, then the FILE_base(fp) macro
+ * will also be defined and should be used to access this field.
+ * Also, the FILE_bufsiz(fp) macro will be defined and should be used
+ * to determine the number of bytes in the buffer. USE_STDIO_BASE
+ * will never be defined unless USE_STDIO_PTR is.
+ */
+/* FILE_base:
+ * This macro is used to access the _base field (or equivalent) of the
+ * FILE structure pointed to by its argument. This macro will always be
+ * defined if USE_STDIO_BASE is defined.
+ */
+/* FILE_bufsiz:
+ * This macro is used to determine the number of bytes in the I/O
+ * buffer pointed to by _base field (or equivalent) of the FILE
+ * structure pointed to its argument. This macro will always be defined
+ * if USE_STDIO_BASE is defined.
+ */
+#$d_stdiobase USE_STDIO_BASE /**/
+#ifdef USE_STDIO_BASE
+#define FILE_base(fp) $stdio_base
+#define FILE_bufsiz(fp) $stdio_bufsiz
+#endif
+
+/* HAS_VPRINTF:
+ * This symbol, if defined, indicates that the vprintf routine is available
+ * to printf with a pointer to an argument list. If unavailable, you
+ * may need to write your own, probably in terms of _doprnt().
+ */
+/* USE_CHAR_VSPRINTF:
+ * This symbol is defined if this system has vsprintf() returning type
+ * (char*). The trend seems to be to declare it as "int vsprintf()". It
+ * is up to the package author to declare vsprintf correctly based on the
+ * symbol.
+ */
+#$d_vprintf HAS_VPRINTF /**/
+#$d_charvspr USE_CHAR_VSPRINTF /**/
+
+/* DOUBLESIZE:
+ * This symbol contains the size of a double, so that the C preprocessor
+ * can make decisions based on it.
+ */
+#define DOUBLESIZE $doublesize /**/
+
+/* I_TIME:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <time.h>.
+ */
+/* I_SYS_TIME:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <sys/time.h>.
+ */
+/* I_SYS_TIME_KERNEL:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <sys/time.h> with KERNEL defined.
+ */
+#$i_time I_TIME /**/
+#$i_systime I_SYS_TIME /**/
+#$i_systimek I_SYS_TIME_KERNEL /**/
+
+/* INTSIZE:
+ * This symbol contains the value of sizeof(int) so that the C
+ * preprocessor can make decisions based on it.
+ */
+/* LONGSIZE:
+ * This symbol contains the value of sizeof(long) so that the C
+ * preprocessor can make decisions based on it.
+ */
+/* SHORTSIZE:
+ * This symbol contains the value of sizeof(short) so that the C
+ * preprocessor can make decisions based on it.
+ */
+#define INTSIZE $intsize /**/
+#define LONGSIZE $longsize /**/
+#define SHORTSIZE $shortsize /**/
+
+/* VAL_O_NONBLOCK:
+ * This symbol is to be used during open() or fcntl(F_SETFL) to turn on
+ * non-blocking I/O for the file descriptor. Note that there is no way
+ * back, i.e. you cannot turn it blocking again this way. If you wish to
+ * alternatively switch between blocking and non-blocking, use the
+ * ioctl(FIOSNBIO) call instead, but that is not supported by all devices.
+ */
+/* VAL_EAGAIN:
+ * This symbol holds the errno error code set by read() when no data was
+ * present on the non-blocking file descriptor.
+ */
+/* RD_NODATA:
+ * This symbol holds the return code from read() when no data is present
+ * on the non-blocking file descriptor. Be careful! If EOF_NONBLOCK is
+ * not defined, then you can't distinguish between no data and EOF by
+ * issuing a read(). You'll have to find another way to tell for sure!
+ */
+/* EOF_NONBLOCK:
+ * This symbol, if defined, indicates to the C program that a read() on
+ * a non-blocking file descriptor will return 0 on EOF, and not the value
+ * held in RD_NODATA (-1 usually, in that case!).
+ */
+#define VAL_O_NONBLOCK $o_nonblock
+#define VAL_EAGAIN $eagain
+#define RD_NODATA $rd_nodata
+#$d_eofnblk EOF_NONBLOCK
+
+/* PTRSIZE:
+ * This symbol contains the size of a pointer, so that the C preprocessor
+ * can make decisions based on it. It will be sizeof(void *) if
+ * the compiler supports (void *); otherwise it will be
+ * sizeof(char *).
+ */
+#define PTRSIZE $ptrsize /**/
+
+/* RANDBITS:
+ * This symbol contains the number of bits of random number the rand()
+ * function produces. Usual values are 15, 16, and 31.
+ */
+#define RANDBITS $randbits /**/
+
+/* SSize_t:
+ * This symbol holds the type used by functions that return
+ * a count of bytes or an error condition. It must be a signed type.
+ * It is usually ssize_t, but may be long or int, etc.
+ * It may be necessary to include <sys/types.h> or <unistd.h>
+ * to get any typedef'ed information.
+ * We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
+ */
+#define SSize_t $ssizetype /* signed count of bytes */
+
+/* OSNAME:
+ * This symbol contains the name of the operating system, as determined
+ * by Configure. You shouldn't rely on it too much; the specific
+ * feature tests from Configure are generally more reliable.
+ */
+#define OSNAME "$osname" /**/
+
+/* ARCHLIB:
+ * This variable, if defined, holds the name of the directory in
+ * which the user wants to put architecture-dependent public
+ * library files for $package. It is most often a local directory
+ * such as /usr/local/lib. Programs using this variable must be
+ * prepared to deal with filename expansion. If ARCHLIB is the
+ * same as PRIVLIB, it is not defined, since presumably the
+ * program already searches PRIVLIB.
+ */
+/* ARCHLIB_EXP:
+ * This symbol contains the ~name expanded version of ARCHLIB, to be used
+ * in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+#$d_archlib ARCHLIB "$archlib" /**/
+#$d_archlib ARCHLIB_EXP "$archlibexp" /**/
+
+/* CAT2:
+ * This macro catenates 2 tokens together.
+ */
+/* STRINGIFY:
+ * This macro surrounds its token with double quotes.
+ */
+#if $cpp_stuff == 1
+#define CAT2(a,b)a/**/b
+#define STRINGIFY(a)"a"
+ /* If you can get stringification with catify, tell me how! */
+#endif
+#if $cpp_stuff == 42
+#define CAT2(a,b)a ## b
+#define StGiFy(a)# a
+#define STRINGIFY(a)StGiFy(a)
+#endif
+#if $cpp_stuff != 1 && $cpp_stuff != 42
+#include "Bletch: How does this C preprocessor catenate tokens?"
+#endif
+
+/* CSH:
+ * This symbol, if defined, contains the full pathname of csh.
+ */
+#$d_csh HAS_CSH /**/
+#ifdef HAS_CSH
+#define CSH "$full_csh" /**/
+#endif
+
+/* HAS_ENDHOSTENT:
+ * This symbol, if defined, indicates that the endhostent() routine is
+ * available to close whatever was being used for host queries.
+ */
+#$d_endhent HAS_ENDHOSTENT /**/
+
+/* HAS_ENDNETENT:
+ * This symbol, if defined, indicates that the endnetent() routine is
+ * available to close whatever was being used for network queries.
+ */
+#$d_endnent HAS_ENDNETENT /**/
+
+/* HAS_ENDPROTOENT:
+ * This symbol, if defined, indicates that the endprotoent() routine is
+ * available to close whatever was being used for protocol queries.
+ */
+#$d_endpent HAS_ENDPROTOENT /**/
+
+/* HAS_ENDSERVENT:
+ * This symbol, if defined, indicates that the endservent() routine is
+ * available to close whatever was being used for service queries.
+ */
+#$d_endsent HAS_ENDSERVENT /**/
+
+/* HAS_GETHOSTBYADDR:
+ * This symbol, if defined, indicates that the gethostbyaddr() routine is
+ * available to look up hosts by their IP addresses.
+ */
+#$d_gethbyaddr HAS_GETHOSTBYADDR /**/
+
+/* HAS_GETHOSTBYNAME:
+ * This symbol, if defined, indicates that the gethostbyname() routine is
+ * available to look up host names in some data base or other.
+ */
+#$d_gethbyname HAS_GETHOSTBYNAME /**/
+
+/* HAS_GETHOSTENT:
+ * This symbol, if defined, indicates that the gethostent() routine is
+ * available to look up host names in some data base or another.
+ */
+#$d_gethent HAS_GETHOSTENT /**/
+
+/* HAS_GETNETBYADDR:
+ * This symbol, if defined, indicates that the getnetbyaddr() routine is
+ * available to look up networks by their IP addresses.
+ */
+#$d_getnbyaddr HAS_GETNETBYADDR /**/
+
+/* HAS_GETNETBYNAME:
+ * This symbol, if defined, indicates that the getnetbyname() routine is
+ * available to look up networks by their names.
+ */
+#$d_getnbyname HAS_GETNETBYNAME /**/
+
+/* HAS_GETNETENT:
+ * This symbol, if defined, indicates that the getnetent() routine is
+ * available to look up network names in some data base or another.
+ */
+#$d_getnent HAS_GETNETENT /**/
+
+/* HAS_GETPROTOENT:
+ * This symbol, if defined, indicates that the getprotoent() routine is
+ * available to look up protocols in some data base or another.
+ */
+#$d_getpent HAS_GETPROTOENT /**/
+
+/* HAS_GETPROTOBYNAME:
+ * This symbol, if defined, indicates that the getprotobyname()
+ * routine is available to look up protocols by their name.
+ */
+/* HAS_GETPROTOBYNUMBER:
+ * This symbol, if defined, indicates that the getprotobynumber()
+ * routine is available to look up protocols by their number.
+ */
+#$d_getpbyname HAS_GETPROTOBYNAME /**/
+#$d_getpbynumber HAS_GETPROTOBYNUMBER /**/
+
+/* HAS_GETSERVENT:
+ * This symbol, if defined, indicates that the getservent() routine is
+ * available to look up network services in some data base or another.
+ */
+#$d_getsent HAS_GETSERVENT /**/
+
+/* HAS_GETSERVBYNAME:
+ * This symbol, if defined, indicates that the getservbyname()
+ * routine is available to look up services by their name.
+ */
+/* HAS_GETSERVBYPORT:
+ * This symbol, if defined, indicates that the getservbyport()
+ * routine is available to look up services by their port.
+ */
+#$d_getsbyname HAS_GETSERVBYNAME /**/
+#$d_getsbyport HAS_GETSERVBYPORT /**/
+
+/* HAS_LONG_DOUBLE:
+ * This symbol will be defined if the C compiler supports long
+ * doubles.
+ */
+/* LONG_DOUBLESIZE:
+ * This symbol contains the size of a long double, so that the
+ * C preprocessor can make decisions based on it. It is only
+ * defined if the system supports long doubles.
+ */
+#$d_longdbl HAS_LONG_DOUBLE /**/
+#ifdef HAS_LONG_DOUBLE
+#define LONG_DOUBLESIZE $longdblsize /**/
+#endif
+
+/* HAS_LONG_LONG:
+ * This symbol will be defined if the C compiler supports
+ * long long.
+ */
+/* LONGLONGSIZE:
+ * This symbol contains the size of a long long, so that the
+ * C preprocessor can make decisions based on it. It is only
+ * defined if the system supports long long.
+ */
+#$d_longlong HAS_LONG_LONG /**/
+#ifdef HAS_LONG_LONG
+#define LONGLONGSIZE $longlongsize /**/
+#endif
+
+/* HAS_SETGROUPS:
+ * This symbol, if defined, indicates that the setgroups() routine is
+ * available to set the list of process groups. If unavailable, multiple
+ * groups are probably not supported.
+ */
+#$d_setgrps HAS_SETGROUPS /**/
+
+/* HAS_SETHOSTENT:
+ * This symbol, if defined, indicates that the sethostent() routine is
+ * available.
+ */
+#$d_sethent HAS_SETHOSTENT /**/
+
+/* HAS_SETNETENT:
+ * This symbol, if defined, indicates that the setnetent() routine is
+ * available.
+ */
+#$d_setnent HAS_SETNETENT /**/
+
+/* HAS_SETPROTOENT:
+ * This symbol, if defined, indicates that the setprotoent() routine is
+ * available.
+ */
+#$d_setpent HAS_SETPROTOENT /**/
+
+/* HAS_SETSERVENT:
+ * This symbol, if defined, indicates that the setservent() routine is
+ * available.
+ */
+#$d_setsent HAS_SETSERVENT /**/
+
+/* HAS_SETVBUF:
+ * This symbol, if defined, indicates that the setvbuf routine is
+ * available to change buffering on an open stdio stream.
+ * to a line-buffered mode.
+ */
+#$d_setvbuf HAS_SETVBUF /**/
+
+/* HAS_SOCKET:
+ * This symbol, if defined, indicates that the BSD socket interface is
+ * supported.
+ */
+/* HAS_SOCKETPAIR:
+ * This symbol, if defined, indicates that the BSD socketpair() call is
+ * supported.
+ */
+#$d_socket HAS_SOCKET /**/
+#$d_sockpair HAS_SOCKETPAIR /**/
+
+/* HAS_UNION_SEMUN:
+ * This symbol, if defined, indicates that the union semun is
+ * defined by including <sys/sem.h>. If not, the user code
+ * probably needs to define it as:
+ * union semun {
+ * int val;
+ * struct semid_ds *buf;
+ * unsigned short *array;
+ * }