2 // vim: set syntax=asciidoc:
4 [[br2-external-converting]]
5 == Converting old br2-external trees
7 Before Buildroot 2016.11, it was possible to use only one br2-external
8 tree at once. With Buildroot 2016.11 came the possibility to use more
9 than one simultaneously (for details, see xref:outside-br-custom[]).
11 This however means that older br2-external trees are not usable as-is.
12 A minor change has to be made: adding a name to your br2-external tree.
14 This can be done very easily in just a few steps:
16 * First, create a new file named +external.desc+, at the root of your
17 br2-external tree, with a single line defining the name of your
21 $ echo 'name: NAME_OF_YOUR_TREE' >external.desc
25 Be careful when choosing a name: It has to be unique and be made
26 with only ASCII characters from the set +[A-Za-z0-9_]+.
28 * Then, change every occurence of +BR2_EXTERNAL+ in your br2-external
29 tree with the new variable:
32 $ find . -type f | xargs sed -i 's/BR2_EXTERNAL/BR2_EXTERNAL_NAME_OF_YOUR_TREE_PATH/g'
35 Now, your br2-external tree can be used with Buildroot 2016.11 onward.
38 This change makes your br2-external tree incompatible with Buildroot