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

configure, thereby reducing the ports dependencies in it :)

src/configure.in

 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(backend/access/common/heaptuple.c)
+AC_CONFIG_HEADER(include/config.h)
 
 dnl Checks for programs.
 AC_PROG_CC
@@ -75,6 +76,7 @@ dnl Checks for header files.
 AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
 AC_CHECK_HEADERS(fcntl.h limits.h sys/file.h sys/ioctl.h sys/time.h unistd.h)
+AC_CHECK_HEADERS(termios.h values.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
@@ -92,7 +94,8 @@ AC_FUNC_MEMCMP
 AC_TYPE_SIGNAL
 AC_FUNC_VPRINTF
 AC_CHECK_FUNCS(ftime getcwd gethostname gettimeofday putenv regcomp select socket strcspn strdup strerror strftime strspn strtod strtol)
+AC_CHECK_FUNCS(isinf tzset cbrt)
 
 #AC_OUTPUT(backend/optimizer/path/Makefile libpq++/man/Makefile backend/port/sparc_solaris/Makefile backend/utils/misc/Makefile backend/port/ultrix4/Makefile bin/psql/Makefile backend/utils/init/Makefile tutorial/C-code/Makefile test/examples/Makefile backend/utils/adt/Makefile bin/destroyuser/Makefile Makefile tutorial/Makefile bin/pg_dump/Makefile bin/cleardbdir/Makefile backend/optimizer/plan/Makefile backend/access/heap/Makefile backend/storage/page/Makefile backend/port/svr4/Makefile backend/optimizer/Makefile backend/utils/hash/Makefile backend/storage/large_object/Makefile backend/access/hash/Makefile test/Makefile backend/optimizer/prep/Makefile bin/initdb/Makefile bin/pg_version/Makefile bin/ipcclean/Makefile bin/pg4_dump/Makefile backend/postmaster/Makefile backend/access/Makefile test/regress/Makefile backend/storage/Makefile backend/port/bsdi/Makefile libpq++/Makefile backend/lib/Makefile backend/libpq/Makefile backend/access/gist/Makefile backend/nodes/Makefile libpgtcl/Makefile libpq/Makefile bin/destroydb/Makefile backend/access/nbtree/Makefile bin/Makefile bin/createuser/Makefile backend/port/Makefile backend/port/irix5/Makefile backend/utils/sort/Makefile backend/utils/error/Makefile backend/utils/time/Makefile backend/Makefile backend/utils/Makefile backend/commands/Makefile bin/pg_id/Makefile backend/tioga/Makefile backend/utils/cache/Makefile backend/port/aix/Makefile backend/storage/lmgr/Makefile test/bench/Makefile bin/monitor/Makefile backend/access/index/Makefile backend/port/hpux/Makefile utils/Makefile backend/port/i386_solaris/Makefile backend/catalog/Makefile backend/storage/smgr/Makefile backend/bootstrap/Makefile backend/storage/buffer/Makefile backend/storage/ipc/Makefile backend/rewrite/Makefile backend/access/rtree/Makefile backend/port/linux/Makefile backend/storage/file/Makefile man/Makefile libpq++/examples/Makefile backend/main/Makefile bin/pgtclsh/Makefile backend/access/common/Makefile bin/createdb/Makefile backend/port/dgux/Makefile backend/utils/fmgr/Makefile backend/parser/Makefile backend/port/sparc/Makefile backend/executor/Makefile backend/optimizer/util/Makefile tools/mkldexport/Makefile backend/utils/mmgr/Makefile backend/tcop/Makefile backend/port/BSD44_derived/Makefile backend/access/transam/Makefile backend/port/alpha/Makefile backend/regex/Makefile)
 
-AC_OUTPUT(GNUmakefile Makefile.global include/config.h)
+AC_OUTPUT(GNUmakefile Makefile.global)

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