Slowly building up config.h so that it is pretty much generated by

configure, thereby reducing the ports dependencies in it :)

src/include/config.h.in

@@ -8,25 +8,63 @@
 
 #define BLCKSZ	8192
 
-#if defined(aix)
-#define TERMIOS_H_LOCATION <termios.h>
+/* 
+ * The following is set using configure.  
+ */
+
+/* Set to 1 if you have <termios.h> */
+#define HAVE_TERMIOS_H 0
+
+/* Set to 1 if you have <limits.h> */
+#define HAVE_LIMITS_H 0
+
+/* Set to 1 if  you have <values.h> */
+#define HAVE_VALUES_H 0
+
+/* Set to 1 if you have isinf() */
+#define HAVE_ISINF 0
+
+/* Set to 1 if you have tzset() */
+#define HAVE_TZSET 0
+
+/* Set to 1 if you have cbrt() */
+#define HAVE_CBRT 0
+
+/*
+ * Code below this point should not require changes
+ */
+
+#if defined(HAVE_TERMIOS_H)
+#  define TERMIOS_H_LOCATION <termios.h>
 #else
-#define TERMIOS_H_LOCATION <sys/termios.h>
+#  define TERMIOS_H_LOCATION <sys/termios.h>
 #endif
 
-#if !defined(nextstep)
+/* Temporary: Need to change source files from USE_VALUES_H to HAVE_VALUES_H */
+#if defined(HAVE_VALUES_H)
 #define USE_VALUES_H
 #endif
 
+/* Temporary: Need to change source files from USE_LIMITS_H to HAVE_LIMITS_H */
+#if defined(HAVE_LIMITS_H)
+#  define USE_LIMITS_H
+#endif 
+
+#if !defined(HAVE_ISINF)
+#  define NEED_ISINF
+#endif
+
+#if !defined(HAVE_CBRT)
+#  define NEED_CBRT
+#endif
+
 #define HAVE_MEMMOVE
 
 #if defined(aix)
 #  define CLASS_CONFLICT 
 #  define DISABLE_XOPEN_NLS 
-#  define NEED_ISINF
 #  define NEED_UNION_SEMUN 
 #  define NEED_SYS_SELECT_H
-#  define HAVE_TZSET
 #  define HAVE_ANSI_CPP
 #  define HAS_TEST_AND_SET
    typedef unsigned int slock_t;
@@ -36,7 +74,6 @@
 #  define USE_POSIX_TIME 
 #  define USE_POSIX_SIGNALS
 #  define DISABLE_XOPEN_NLS 
-#  define NEED_ISINF 
 #  define HAS_LONG_LONG
 #  define NEED_UNION_SEMUN 
 #  define HAS_TEST_AND_SET
@@ -45,9 +82,7 @@
 #endif
 
 #if defined(BSD44_derived)
-#  define USE_LIMITS_H
 #  define USE_POSIX_TIME
-#  define NEED_CBRT
 #  define NEED_I386_TAS_ASM
 #  define HAS_TEST_AND_SET
 #  if defined(__mips__)
@@ -66,9 +101,7 @@
 #  if defined(PRE_BSDI_2_1)
 #    define NEED_UNION_SEMUN 
 #  endif
-#  define USE_LIMITS_H
 #  define USE_POSIX_TIME
-#  define NEED_CBRT
 #  define HAS_TEST_AND_SET
    typedef unsigned char slock_t;
 #endif
@@ -83,8 +116,6 @@
 #if defined(hpux)
 #  define JMP_BUF
 #  define USE_POSIX_TIME
-#  define HAVE_TZSET
-#  define NEED_CBRT
 #  define NEED_RINT
 #  define NEED_UNION_SEMUN 
 #  define HAS_TEST_AND_SET
@@ -92,13 +123,10 @@
 #endif
 
 #if defined(i386_solaris) 
-#  define USE_LIMITS_H
 #  define USE_POSIX_TIME 
 #  define USE_POSIX_SIGNALS
-#  define NEED_ISINF 
 #  define NEED_RUSAGE 
 #  define NO_EMPTY_STMTS
-#  define HAVE_TZSET
 #  define NEED_UNION_SEMUN 
 #  define SYSV_DIRENT
 #  define HAS_TEST_AND_SET
@@ -108,10 +136,8 @@
 #if defined(irix5)
 #  define USE_POSIX_TIME 
 #  define USE_POSIX_SIGNALS
-#  define NEED_ISINF 
 #  define NO_EMPTY_STMTS
 #  define NO_VFORK
-#  define HAVE_TZSET
 #  define SYSV_DIRENT
 #  define HAS_TEST_AND_SET
 #  include <abi_mutex.h>
@@ -127,8 +153,6 @@
 */
 #  define JMP_BUF
 #  define USE_POSIX_TIME
-#  define HAVE_TZSET
-#  define NEED_CBRT
 #  define NEED_I386_TAS_ASM
 #  define HAS_TEST_AND_SET
    typedef unsigned char slock_t;
@@ -152,7 +176,6 @@
 #  define NEED_SIG_JMP
 # endif
 
-# define USE_LIMITS_H
 # define JMP_BUF
 # define NO_WAITPID
   typedef struct mutex slock_t;
@@ -163,14 +186,11 @@
 #endif
 
 #if defined(sparc_solaris)
-#  define USE_LIMITS_H
 #  define USE_POSIX_TIME 
 #  define USE_POSIX_SIGNALS
-#  define NEED_ISINF 
 #  define NEED_RUSAGE 
 #  define NO_EMPTY_STMTS
 #  define USE_POSIX_TIME
-#  define HAVE_TZSET
 #  define NEED_UNION_SEMUN 
 #  define SYSV_DIRENT
 #  define HAS_TEST_AND_SET
@@ -185,10 +205,8 @@ typedef unsigned char slock_t;
 #if defined(svr4) 
 #  define USE_POSIX_TIME 
 #  define USE_POSIX_SIGNALS
-#  define NEED_ISINF 
 #  define NEED_RUSAGE 
 #  define NO_EMPTY_STMTS
-#  define HAVE_TZSET
 #  define NEED_UNION_SEMUN 
 #  define SYSV_DIRENT
 #endif
@@ -200,16 +218,12 @@ typedef unsigned char slock_t;
 #  define USES_WINSOCK 
 #  define NOFILE	100
 #  define NEED_UNION_SEMUN
-#  define HAVE_TZSET
-#  define NEED_CBRT
-#  define NEED_ISINF
 #  ifndef MAXPATHLEN
 #  define MAXPATHLEN    250
 #  endif
 #endif /* WIN32 */
 
 #if defined(ultrix4)
-#  define NEED_ISINF 
 #  define USE_POSIX_TIME
 #  define NEED_UNION_SEMUN 
 #  define NEED_STRDUP