[PATCH v3 1/2] imagebuilder: unset BINARY_FOLDER and DOWNLOAD_FOLDER in final archive

[Sven Roederer]

Using these config-options to customize the folders used at build-time
makes these folder settings appear in generated archive. This causes the
imagebuilder to be not portable, as it's going to use the build-time folders
on the new systems. Errors look like:

  mkdir: cannot create directory '/mnt/build': Permission denied
  Makefile:116: recipe for target '_call_image' failed
  make[2]: *** [_call_image] Error 1
  Makefile:241: recipe for target 'image' failed
  make[1]: *** [image] Error 2

The build-time settings of these folders are passed into the archives via
.config file.
The expected behavior is that after unpacking the imagebuilder acts like
these settings have their defaults, using intree folders. So unset the
build-time settings.

Signed-off-by: Sven Roederer <devel-sven at geroedel.de>
---
 target/imagebuilder/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/imagebuilder/Makefile b/target/imagebuilder/Makefile
index f9c08776a8..ef7fd3f25e 100644
--- a/target/imagebuilder/Makefile
+++ b/target/imagebuilder/Makefile
@@ -29,6 +29,8 @@ $(BIN_DIR)/$(IB_NAME).tar.xz: clean
 	mkdir -p $(IB_KDIR) $(IB_LDIR) $(PKG_BUILD_DIR)/staging_dir/host/lib \
 		$(PKG_BUILD_DIR)/target $(PKG_BUILD_DIR)/scripts $(IB_DTSDIR)
 	-cp $(TOPDIR)/.config $(PKG_BUILD_DIR)/.config
+	$(SED) 's/^CONFIG_BINARY_FOLDER=.*/# CONFIG_BINARY_FOLDER was reset by Imagebuilder/' $(PKG_BUILD_DIR)/.config
+	$(SED) 's/^CONFIG_DOWNLOAD_FOLDER=.*/# CONFIG_DOWNLOAD_FOLDER was reset by Imagebuilder/' $(PKG_BUILD_DIR)/.config
 	$(CP) -L \
 		$(INCLUDE_DIR) $(SCRIPT_DIR) \
 		$(TOPDIR)/rules.mk \
-- 
2.17.1