Portability patches for HPUX 11 and Unixware in configure

and related files.  Also remove float.c's gratuitous redeclaration of
isinf() ... looks like there are more decls in there that ought to be
in config.h, but I'll leave well enough alone for now ...

src/backend/utils/adt/float.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.40 1999/02/13 23:19:14 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.41 1999/04/20 00:26:32 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -74,10 +74,6 @@
 #define SHRT_MIN (-32768)
 #endif
 
-#ifndef NAN
-#define NAN		(0.0/0.0)
-#endif
-
 #define FORMAT			'g'		/* use "g" output format as standard
 								 * format */
 /* not sure what the following should be, but better to make it over-sufficient */
@@ -112,9 +108,8 @@ extern double rint(double x);
 
 #endif
 
-extern int	isinf(double x);
-
 #endif
+
 /* ========== USER I/O ROUTINES ========== */
 
 

src/config.guess

@@ -709,7 +709,7 @@ EOF
 	  (/bin/uname -X|egrep '^Machine.*Pentium' >/dev/null) \
 	    && UNAME_MACHINE=i586
 	fi
-	echo ${UNAME_MACHINE}-unixware-${UNAME_RELEASE}-${UNAME_VERSION}
+	echo ${UNAME_MACHINE}-pc-unixware${UNAME_VERSION}
 	exit 0 ;;
     pc:*:*:*)
         # uname -m prints for DJGPP always 'pc', but it prints nothing about

src/config.sub

@@ -175,7 +175,7 @@ case $basic_machine in
 	      | m88k-* | sparc-* | ns32k-* | fx80-* | arc-* | arm-* | c[123]* \
 	      | mips-* | pyramid-* | tron-* | a29k-* | romp-* | rs6000-* \
 	      | power-* | none-* | 580-* | cray2-* | h8300-* | i960-* \
-	      | xmp-* | ymp-* | hppa-* | hppa1.0-* | hppa1.1-* | hppa2.0-* \
+	      | xmp-* | ymp-* | hppa-* | hppa1.0-* | hppa1.1-* | hppa2.0*-* \
 	      | alpha-* | alphaev5-* | alphaev56-* | we32k-* | cydra-* \
 	      | ns16k-* | pn-* | np1-* | xps100-* | clipper-* | orion-* \
 	      | sparclite-* | pdp11-* | sh-* | powerpc-* | powerpcle-* \
@@ -692,6 +692,8 @@ case $os in
 	-svr4*)
 		os=-sysv4
 		;;
+	-unixware7*)
+		;;
 	-unixware*)
 		os=-sysv4.2uw
 		;;

src/configure.in

@@ -44,7 +44,7 @@ nextstep*) os=nextstep need_tas=no ;;
 		    *) os=unknown need_tas=no ;;
        esac ;;
    sysv4*) os=svr4 need_tas=no ;;
-   sysv5*) os=unixware need_tas=no ;;
+   unixware*) os=unixware need_tas=no ;;
 *) echo ""
    echo "*************************************************************"
    echo "configure does not currently recognize your operating system,"
@@ -674,9 +674,22 @@ AC_CHECK_FUNC(vsnprintf,
 	      AC_DEFINE(HAVE_VSNPRINTF),
 	      SNPRINTF='snprintf.o')
 AC_SUBST(SNPRINTF)
-AC_CHECK_FUNC(isinf,
-	      AC_DEFINE(HAVE_ISINF),
-	      ISINF='isinf.o')
+dnl do this one the hard way in case isinf() is a macro
+AC_MSG_CHECKING(for isinf)
+AC_CACHE_VAL(ac_cv_func_or_macro_isinf,
+[AC_TRY_LINK(
+[#include <math.h>],
+[double x = 0.0; int res = isinf(x);],
+[ac_cv_func_or_macro_isinf=yes],
+[ac_cv_func_or_macro_isinf=no])])
+if [[ $ac_cv_func_or_macro_isinf = yes ]]; then
+  AC_MSG_RESULT(yes)
+  AC_DEFINE(HAVE_ISINF)
+  ISINF=''
+else
+  AC_MSG_RESULT(no)
+  ISINF='isinf.o'
+fi
 AC_SUBST(ISINF)
 AC_CHECK_FUNC(getrusage,
 	      AC_DEFINE(HAVE_GETRUSAGE),