br2-external: make it available to post-{build, image} scripts

Currently, BR2_EXTERNAL is not always exported to sub-processes that we
spawn, like post-build or post-image scripts. This all depends on how
the user passes BR2_EXTERNAL; consider the following:

  - make BR2_EXTERNAL=/path/to/br2-ext
  - BR2_EXTERNAL=/path/to/br2-ext make

In the first case, it is just a make variable, not an environment
variable, and thus not exported, while in the second case it is an
environment variable and gets exported to all sub-processes make may
spawn.

Explicitly export it using EXTRA_ENV.

Reported-by: Julian Scheel <julian@jusst.de>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Julian Scheel <julian@jusst.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

diff --git a/package/Makefile.in b/package/Makefile.in
index 70529f8a5b5ddcf21101255734b7a6b4ad955a8b..803b162a74961b9a593a11d886b18f8452456320 100644 (file)
--- a/package/Makefile.in
+++ b/package/Makefile.in
@@ -326,7 +326,8 @@ HOST_MAKE_ENV = \
 EXTRA_ENV = \
        PATH=$(BR_PATH) \
        BR2_DL_DIR=$(BR2_DL_DIR) \
-       BUILD_DIR=$(BUILD_DIR)
+       BUILD_DIR=$(BUILD_DIR) \
+       BR2_EXTERNAL=$(BR2_EXTERNAL)
 
 ################################################################################
 # settings we need to pass to configure