Patch #615069: Fix build problems on SCO Open Server 5. Backported to 2.2.
diff --git a/configure.in b/configure.in
index 5e68e75..27462a6 100644
--- a/configure.in
+++ b/configure.in
@@ -80,7 +80,8 @@
 if test -z "$MACHDEP"
 then
 	ac_sys_system=`uname -s`
-	if test "$ac_sys_system" = "AIX" -o "$ac_sys_system" = "Monterey64"; then
+	if test "$ac_sys_system" = "AIX" -o "$ac_sys_system" = "Monterey64" \
+	-o "$ac_sys_system" = "UnixWare" -o "$ac_sys_system" = "OpenUNIX"; then
 		ac_sys_release=`uname -v`
 	else
 		ac_sys_release=`uname -r`
@@ -473,11 +474,17 @@
 	*)
 	    OPT="-O3 -Wall -Wstrict-prototypes";;
 	esac
+	case $ac_sys_system in
+	    SCO_SV*) OPT="$OPT -m486 -DSCO5";;
+	esac
 	;;
     *)
 	case $ac_sys_system in
 	OpenUNIX*|UnixWare*)
 	    OPT="-O -K pentium,host,inline,loop_unroll,alloca ";;
+	SCO_SV*)
+	    CFLAGS="$CFLAGS -belf"
+	    OPT="-belf -O -Ki486 -DSCO5";;
 	*)
 	    OPT="-O";;
 	esac
@@ -940,7 +947,7 @@
 		then LDSHARED="$(CC) -shared"
 		else LDSHARED="$(CC) -G"
 		fi;;
-	SCO_SV*) LDSHARED="cc -G -KPIC -Ki486 -belf -Wl,-Bexport";;
+	SCO_SV*) LDSHARED="$(CC) -Wl,-G,-Bexport";;
 	Monterey*) LDSHARED="cc -G -dy -Bdynamic -Bexport -L/usr/lib/ia64l64";;
 	CYGWIN*) LDSHARED="gcc -shared -Wl,--enable-auto-image-base";;
 	atheos*) LDSHARED="gcc -shared";;
@@ -970,7 +977,11 @@
 		then CCSHARED="-fPIC"
 		else CCSHARED="-KPIC"
 		fi;;
-	SCO_SV*) CCSHARED="-KPIC -dy -Bdynamic";;
+	SCO_SV*)
+		if test "$GCC" = "yes"
+		then CCSHARED="-fPIC"
+		else CCSHARED="-Kpic -belf"
+		fi;;
 	Monterey*) CCSHARED="-G";;
 	IRIX*/6*)  case $CC in
 		   *gcc*) CCSHARED="-shared";;
@@ -1008,7 +1019,7 @@
 		fi
 		LINKFORSHARED="$LINKFORSHARED $extra_frameworks";;
 	OpenUNIX*|UnixWare*) LINKFORSHARED="-Wl,-Bexport";;
-	SCO_SV*) LINKFORSHARED="-Bdynamic -dy -Wl,-Bexport";;
+	SCO_SV*) LINKFORSHARED="-Wl,-Bexport";;
 	ReliantUNIX*) LINKFORSHARED="-W1 -Blargedynsym";;
 	FreeBSD*|NetBSD*|OpenBSD*) 
 		if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]