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-rw-r--r--Makefile5
1 files changed, 4 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index c1d4702a4e..4672147318 100644
--- a/Makefile
+++ b/Makefile
@@ -1833,7 +1833,9 @@ ENV_FILE := $(if $(ENV_SOURCE_FILE),$(ENV_FILE_CFG),$(wildcard $(ENV_FILE_BOARD)
# Run the environment text file through the preprocessor, but only if it is
# non-empty, to save time and possible build errors if something is wonky with
-# the board
+# the board.
+# If there is no ENV_FILE, produce an empty output file, to prevent a previous
+# build's file being used in the case of in-tree builds.
quiet_cmd_gen_envp = ENVP $@
cmd_gen_envp = \
if [ -s "$(ENV_FILE)" ]; then \
@@ -1844,6 +1846,7 @@ quiet_cmd_gen_envp = ENVP $@
-I$(srctree)/arch/$(ARCH)/include \
$< -o $@; \
else \
+ rm $@; \
touch $@ ; \
fi
include/generated/env.in: include/generated/env.txt FORCE