Index: uspace/Makefile
===================================================================
--- uspace/Makefile	(revision 57914494f0017d0618e3eaa16f2ae9c2fd1baefd)
+++ uspace/Makefile	(revision 06ae793150dfa79fa455b8d805a4e29fd70413fe)
@@ -255,5 +255,5 @@
 CLEANS := $(addsuffix .clean,$(DIRS) $(LIBS) $(BASE_LIBS))
 
-.PHONY: all $(BASE_BUILDS) $(BUILDS) $(BUILDS_TESTS) $(CLEANS) clean
+.PHONY: all $(BASE_BUILDS) $(BUILDS) $(BUILDS_TESTS) $(CLEANS) clean export
 
 all: $(BUILDS) $(BUILDS_TESTS)
@@ -261,4 +261,7 @@
 $(BUILDS_TESTS): $(BASE_BUILDS) $(BUILDS)
 	$(MAKE) -r -C $(basename $@) all-test PRECHECK=$(PRECHECK)
+
+export: lib/posix.build lib/math.build lib/clui.build
+	$(MAKE) -r -C lib/posix export EXPORT_DIR=$(EXPORT_DIR)
 
 clean: $(CLEANS)