mk: prevent duplicates in REPOSITORIES definition

Fixes #3731
2020-04-22 11:25:58 +02:00 · 2020-04-22 11:25:58 +02:00 · 1459085a4d
parent 6f6340644b
commit 1459085a4d
1 changed files with 9 additions and 0 deletions
--- a/tool/builddir/build.mk
+++ b/tool/builddir/build.mk
@ -39,6 +39,15 @@
 ## Define global configuration variables
 ##

+#
+# Whenever using the 'run/%' rule and the run tool spawns this Makefile again
+# when encountering a 'build' step, the build.conf is included a second time,
+# with the content taken from the environment variable. We need to reset the
+# 'REPOSITORIES' variable to prevent extending this variable twice.
+# (see https://github.com/genodelabs/genode/issues/3731)
+#
+REPOSITORIES :=
+
 -include etc/build.conf

 BUILD_BASE_DIR := $(CURDIR)