Index: Makefile
===================================================================
--- Makefile	(revision e3473967252c49920b3c2af00dbb1c3dfd61f614)
+++ Makefile	(revision 466e75ad7c9e2fa896bf55b935f88285eb8f0577)
@@ -48,5 +48,5 @@
 ERRNO_INPUT = abi/include/abi/errno.in
 
-.PHONY: all precheck cscope cscope_parts autotool config_auto config_default config distclean clean check releasefile release common boot kernel uspace
+.PHONY: all precheck cscope cscope_parts autotool config_auto config_default config distclean clean check releasefile release common boot kernel uspace export-posix
 
 all: kernel uspace
@@ -60,4 +60,11 @@
 uspace: common
 	$(MAKE) -r -C uspace PRECHECK=$(PRECHECK)
+
+export-posix: common
+ifndef EXPORT_DIR
+	@echo ERROR: Variable EXPORT_DIR is not defined. && false
+else
+	$(MAKE) -r -C uspace export EXPORT_DIR=$(abspath $(EXPORT_DIR))
+endif
 
 precheck: clean