--- RULES/i386-freebsd-gcc.rul.orig	2022-07-05 01:45:16 UTC
+++ RULES/i386-freebsd-gcc.rul
@@ -38,4 +38,21 @@ LIB_KVM=	
 
 #LDOPTS=		$(LIBS_PATH) $(LDPATH)
 
+#
+# Sunpro C/C++ run on Solaris and Linux and both have linkers
+# that support mapfiles
+#
+MAPVERS=	$(_MAPVERS) # This enables to use mapfiles
+#
+# The GNU linker is buggy and does not like the official order in linker map
+# files for symbol versioning. The following command reverses the order of
+# the version names in the linker map file.
+#
+MAPFILE_POST=	| sed 's/^SCHILY/+SCHILY/' | tr '\012' '@' | tr '+' '\012' | tail -r |  tr '@' '\012'
+
+#LDOPTS=		$(LIBS_PATH) $(LDPATH) $(RUNPATH:-R%=-Wl,-R%)
+#LDOPTS=		$(LIBS_PATH) $(LDPATH)
+LDOPTMAP=	$(PMAPVERS:%=-Wl,--version-script=%)
+LDOPTDYN=	-shared -Wl,-soname,$(TARGET) $(LDOPTMAP)
+
 RANLIB=		$(NOECHO)echo "	==> RANDOMIZING ARCHIVE \"$@\""; ranlib