Refine ELF detection on BSD platforms.

config

@@ -660,9 +660,14 @@ case "$GUESSOS" in
   sparc64-*-*bsd*)	OUT="BSD-sparc64" ;;
   ia64-*-*bsd*)		OUT="BSD-ia64" ;;
   amd64-*-*bsd*)	OUT="BSD-x86_64" ;;
-  *86*-*-*bsd*)		# assume highest libc.so.* version is the one in effect
-			libc=`(ls /usr/lib/libc.so.* /lib/libc.so.* | tail -1) 2>/dev/null`
-			case "`(file $libc) 2>/dev/null`" in
+  *86*-*-*bsd*)		# mimic ld behaviour when it's looking for libc...
+			if [ -L /usr/lib/libc.so ]; then	# [Free|Net]BSD
+			    libc=/usr/lib/libc.so
+			else					# OpenBSD
+			    # ld searches for highest libc.so.* and so do we
+			    libc=`(ls /usr/lib/libc.so.* | tail -1) 2>/dev/null`
+			fi
+			case "`(file -L $libc) 2>/dev/null`" in
 			*ELF*)	OUT="BSD-x86-elf" ;;
 			*)	OUT="BSD-x86"; options="$options no-sse2" ;;
 			esac ;;