Use immediate variable expansion in the second-deepest level makefile scripts to...

[pub/USBasp.git] / Bootloaders / makefile

diff --git a/Bootloaders/makefile b/Bootloaders/makefile
index 1a4d345..003069b 100644 (file)
--- a/Bootloaders/makefile
+++ b/Bootloaders/makefile
@@ -13,7 +13,7 @@
 # custom LUFA library build options are reflected in the compiled
 # code.
 
-PROJECT_DIRECTORIES = $(shell ls -d */)
+PROJECT_DIRECTORIES := $(shell ls -d */)
 
 # This makefile is potentially infinitely recursive if something really bad
 # happens when determining the set of project directories - hard-abort if