tree 935174cf950dfcb199741b250896877181201969
parent b43c6120ab4b649c210fad27ea9cc3bcadbbac54
author Sebastian Bøe <sebastian.boe@nordicsemi.no> 1549637397 +0100
committer Kumar Gala <kumar.gala@gmail.com> 1549665583 -0600

cmake: Fix dependencies for LD script generation

The dependencies relating to generating LD scripts are declared
incorrectly. This manifests itself as broken incremental builds as
shown in #13001.

This commit aligns the LD script generation with the Zephyr standard
for declaring custom commands.

For instance, custom commands should generate files that are wrapped
by targets. The custom commands should declare the dependencies, not
the targets.

Also, when using custom commands, the OUTPUT signature should be used,
not the TARGET signature, as app_smem was doing.

For details about how Zephyr uses custom commands see
https://samthursfield.wordpress.com/2015/11/21/cmake-dependencies-between-targets-and-files-and-custom-commands/

This fixes #13001.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>