Having a library being GLOBAL, although not default behaviour, or
necessary for the sample, is expected behaviour for a library. It is
expected that like normal libraries, the target name will be
accessible from outside of the CMakeLists.txt file that created it.
Since samples are used as reference code, we specify GLOBAL so that
libraries are created with this intuitive behaviour.
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
This samples was failing to build with Ninja because Ninja detected
that libmylib.a was missing. Adding it as a BYPRODUCT in the
ExternalProject fixes the issue.
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
When exporting flags to an external build system we need to deal with
the fact that we sometimes use generator expressions. Specifically, we
use generator expressions that look like this:
$<$<COMPILE_LANGUAGE:CXX>:-fno-exceptions>
This patch replaces the old API with a new one where users can ask for
compile options for specific languages, like this:
zephyr_get_compile_options_for_lang_as_string(CXX x)
The existing API would have either crashed or silently omitted flags
when a COMPILE_LANG generator expression was present.
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
Introducing CMake 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+
Port any out-of-tree Makefiles to CMake.
Learn the absolute minimum about the new command line interface:
$ cd samples/hello_world
$ mkdir build && cd build
$ cmake -DBOARD=nrf52_pca10040 ..
$ cd build
$ make
PR: zephyrproject-rtos#4692
docs: http://docs.zephyrproject.org/getting_started/getting_started.html
Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>
Sebastian Bøe