fix parallel build issues

[openwrt/staging/mkresin.git] / include / toplevel.mk

diff --git a/include/toplevel.mk b/include/toplevel.mk
index ba5cb33759b828f361266449832631aa4de6f738..7930223650c7e7cd372bb03b14fb727473c42269 100644 (file)
--- a/include/toplevel.mk
+++ b/include/toplevel.mk
@@ -22,6 +22,7 @@ else
   endif
 endif
 export OPENWRTVERSION
+export IS_TTY=$(shell tty -s && echo 1 || echo 0)
 
 ifeq ($(FORCE),)
   .config scripts/config/conf scripts/config/mconf: tmp/.prereq-build