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-rw-r--r--include/toplevel.mk1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/toplevel.mk b/include/toplevel.mk
index ba5cb33759..7930223650 100644
--- 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