diff --git a/src/Makefile.in b/src/Makefile.in
index 6d1992a9..b0d66e3a 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -106,18 +106,18 @@ uninstall:
 	if test $(have_libev) = 1; then $(LIBTOOL) --mode=uninstall rm -f $(DESTDIR)$(libdir)/$(EXTENSION_LIBEV_LIB) ; fi
 
 libgetdns_ext_event.la: libgetdns.la extension/libevent.lo
-	$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) -o $@ extension/libevent.lo ./.libs/libgetdns.la $(EXTENSION_LIBEVENT_LDFLAGS) $(EXTENSION_LIBEVENT_EXT_LIBS) -rpath $(libdir) -version-info $(libversion) -no-undefined -release $(version) -export-symbols $(srcdir)/SYMFILE
+	$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) -o $@ extension/libevent.lo ./.libs/libgetdns.la $(EXTENSION_LIBEVENT_LDFLAGS) $(EXTENSION_LIBEVENT_EXT_LIBS) -rpath $(libdir) -version-info $(libversion) -no-undefined -release $(version) -export-symbols $(srcdir)/extension/libevent.symfile
 
 libgetdns_ext_uv.la: libgetdns.la extension/libuv.lo
-	$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) -o $@ extension/libuv.lo ./.libs/libgetdns.la $(EXTENSION_LIBUV_LDFLAGS) $(EXTENSION_LIBUV_EXT_LIBS) -rpath $(libdir) -version-info $(libversion) -no-undefined -release $(version) -export-symbols $(srcdir)/SYMFILE
+	$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) -o $@ extension/libuv.lo ./.libs/libgetdns.la $(EXTENSION_LIBUV_LDFLAGS) $(EXTENSION_LIBUV_EXT_LIBS) -rpath $(libdir) -version-info $(libversion) -no-undefined -release $(version) -export-symbols $(srcdir)/extension/libuv.symfile
 
 
 libgetdns_ext_ev.la: libgetdns.la extension/libev.lo
-	$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) -o $@ extension/libev.lo ./.libs/libgetdns.la $(EXTENSION_LIBEV_LDFLAGS) $(EXTENSION_LIBEV_EXT_LIBS) -rpath $(libdir) -version-info $(libversion) -no-undefined -release $(version) -export-symbols $(srcdir)/SYMFILE
+	$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) -o $@ extension/libev.lo ./.libs/libgetdns.la $(EXTENSION_LIBEV_LDFLAGS) $(EXTENSION_LIBEV_EXT_LIBS) -rpath $(libdir) -version-info $(libversion) -no-undefined -release $(version) -export-symbols $(srcdir)/extension/libev.symfile
 
 
 libgetdns.la: $(GETDNS_OBJ)
-	$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) -o $@ $(GETDNS_OBJ) $(LDFLAGS) -rpath $(libdir) -version-info $(libversion) -no-undefined -release $(version) -export-symbols $(srcdir)/SYMFILE
+	$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) -o $@ $(GETDNS_OBJ) $(LDFLAGS) -rpath $(libdir) -version-info $(libversion) -no-undefined -release $(version) -export-symbols $(srcdir)/libgetdns.symfile
 
 
 test:	FORCE
diff --git a/src/extension/libev.symbols b/src/extension/libev.symbols
new file mode 100644
index 00000000..80ac170e
--- /dev/null
+++ b/src/extension/libev.symbols
@@ -0,0 +1 @@
+getdns_extension_set_libev_loop
diff --git a/src/extension/libevent.symbols b/src/extension/libevent.symbols
new file mode 100644
index 00000000..e3aa1935
--- /dev/null
+++ b/src/extension/libevent.symbols
@@ -0,0 +1 @@
+getdns_extension_set_libevent_base
diff --git a/src/extension/libuv.symbols b/src/extension/libuv.symbols
new file mode 100644
index 00000000..3da0338b
--- /dev/null
+++ b/src/extension/libuv.symbols
@@ -0,0 +1 @@
+getdns_extension_set_libuv_loop
diff --git a/src/SYMFILE b/src/libgetdns.symbols
similarity index 81%
rename from src/SYMFILE
rename to src/libgetdns.symbols
index adcb0f33..a3e9d447 100644
--- a/src/SYMFILE
+++ b/src/libgetdns.symbols
@@ -1,3 +1,20 @@
+getdns_context_set_namespaces
+getdns_context_set_namespaces
+getdns_context_set_namespaces
+getdns_context_set_namespaces
+getdns_context_set_namespaces
+getdns_context_set_resolution_type
+getdns_context_set_resolution_type
+getdns_context_set_follow_redirects
+getdns_context_set_follow_redirects
+getdns_context_set_dns_transport
+getdns_context_set_dns_transport
+getdns_context_set_dns_transport
+getdns_context_set_dns_transport
+getdns_context_set_append_name
+getdns_context_set_append_name
+getdns_context_set_append_name
+getdns_context_set_append_name
 getdns_strerror
 getdns_list_get_length
 getdns_list_get_data_type
diff --git a/src/mk-SYMFILE.sh b/src/mk-SYMFILE.sh
deleted file mode 100755
index d7f5b2b2..00000000
--- a/src/mk-SYMFILE.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/sh
-
-cat getdns/getdns.h.in getdns/*.h | grep 'getdns_[0-9a-zA-Z_]*(' \
-| grep -v '^#' | sed -e 's/(.*$//g' -e 's/^.*getdns_/getdns_/g' > SYMFILE
-
diff --git a/src/mk-symfiles.sh b/src/mk-symfiles.sh
new file mode 100755
index 00000000..b1e4f6e3
--- /dev/null
+++ b/src/mk-symfiles.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+write_symbols() {
+	OUTPUT=$1
+	shift
+	grep 'getdns_[0-9a-zA-Z_]*(' $* | grep -v '^#' \
+	| sed -e 's/(.*$//g' -e 's/^.*getdns_/getdns_/g' > $OUTPUT
+}
+
+write_symbols libgetdns.symbols getdns/getdns.h.in getdns/getdns_extra.h
+write_symbols extension/libevent.symbols getdns/getdns_ext_libevent.h
+write_symbols extension/libev.symbols getdns/getdns_ext_libev.h
+write_symbols extension/libuv.symbols getdns/getdns_ext_libuv.h
+