Update doc and README with latest modifications

Change-Id: I7b42fe371b6912de9df42a76781a8886dd804b3d
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

1 files changed, 21 insertions, 2 deletions

diff --git a/docs/dev_guide/4_advanced_customization.md b/docs/dev_guide/4_advanced_customization.md
index 0d8957e..a9974a8 100644
--- a/docs/dev_guide/4_advanced_customization.md
+++ b/docs/dev_guide/4_advanced_customization.md
@@ -2,6 +2,8 @@
 
 ## Including additionnals cmake files
 
+### Machine and system custom cmake files
+
 Advanced tuning is possible using addionnals cmake files that are included
 automatically from some specifics locations. They are included in that order:
 
@@ -9,8 +11,8 @@ automatically from some specifics locations. They are included in that order:
 - Home CMake files located in _$HOME/.config/app-templates/cmake.d_
 - System CMake files located in _/etc/app-templates/cmake.d_
 
-CMake files has to be named using the following convention: `XX-common-*.cmake`
-or `XX-${PROJECT_NAME}-*.cmake`, where `XX` are numbers, `*` file name
+CMake files has to be named using the following convention: `XX-common*.cmake`
+or `XX-${PROJECT_NAME}*.cmake`, where `XX` are numbers, `*` file name
 (ie. `99-common-my_customs.cmake`).
 
 > **NOTE** You need to specify after numbers that indicate include order, to
@@ -28,6 +30,23 @@ Example:
 set(VARIABLE_NAME 'value string random' CACHE STRING 'docstring')
 ```
 
+### OS custom cmake files
+
+This is meant to personalize the project depending on the OS your are using.
+At the end of config.cmake, common.cmake will include lot of cmake file to
+customize project build depending on your plateform. It will detect your OS
+deducing it from file _/etc/os-release_ now as default in almost all Linux
+distribution.
+
+So you can use the value of field **ID_LIKE** or **ID** if the
+first one doesn't exists and add a cmake file for that distribution in your
+_conf.d/cmake/_ directory or relatively to your _app-templates_ submodule path
+_app-templates/../cmake/_
+
+Those files has to be named use the following scheme _XX-${OSRELEASE}*.cmake_
+where _XX_ are numbers, ${OSRELEASE} the **ID_LIKE** or **ID** field from
+_/etc/os-release_ file.
+
 ## Include customs templated scripts
 
 As well as for additionnals cmake files you can include your own templated