Bøe, Sebastian <Sebastian.Boe@...>
Zephyr has finally migrated to CMake.
This migration is an important step in a larger effort to make Zephyr
easy to use for application developers working on different platforms
with different development environment needs.
Simplified, this change retains Kconfig as-is, and replaces all
Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild
offers is replaced by a set of CMake extentions. These extentions have
either provided simple one-to-one translations of KBuild features or
introduced new concepts that replace KBuild concepts.
This is a breaking change for existing test infrastructure and build
scripts that are maintained out-of-tree. But for FW itself, no porting
should be necessary.
For users that just want to continue their work with minimal
disruption the following should suffice:
Install CMake 3.8.2 exactly
Port any out-of-tree Makefiles to CMake.
Learn the absolute minimum about the new command line interface:
# To do a clean build;
$ cd samples/hello_world
$ mkdir build && cd build
$ cmake -DBOARD=nrf52_pca10040 ..
# For incremental builds;
$ cd build