Starting with v3.0 of FreeBSD, we are now an elf system, and dont' have a
-Bforcearchive flag for ld...

Give FreeBSD its own special Makefile to get around the "bug"

src/configure.in

@@ -16,7 +16,8 @@ case "$host_os" in
      aux*) os=aux need_tas=no ;;
    linux*) os=linux need_tas=no ;;
     bsdi*) os=bsdi need_tas=no ;;
- freebsd*|netbsd*|openbsd*) os=bsd need_tas=no ;;
+ freebsd*) os=freebsd need_tas=no ;;
+  netbsd*|openbsd*) os=bsd need_tas=no ;;
     dgux*) os=dgux need_tas=no ;;
      aix*) os=aix need_tas=no ;;
 nextstep*) os=nextstep need_tas=no ;;

src/makefiles/Makefile.freebsd

+%.so: %.o
+	$(LD) -x -r -o $<.obj $<
+	@echo building shared object $@
+	@rm -f $@.pic
+	@${AR} cq $@.pic `lorder $<.obj | tsort`
+	${RANLIB} $@.pic
+	@rm -f $@
+	$(LD) -x -Bshareable -Bforcearchive \
+	  -o $@ $@.pic