X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=docs%2Fdev_guide%2F3_advanced_usage.md;h=3e0ace191d0bb4578464c6b03d8b5bf55a784266;hb=d6c7b9663f735fc29e68bfb7a55b2025a6a650ad;hp=8994b41391ee9f4eae7f0cfe39d3b118ada6dedd;hpb=b1bb356be470cfc10a0d9457166ad21af0bd3f19;p=apps%2Fapp-templates.git diff --git a/docs/dev_guide/3_advanced_usage.md b/docs/dev_guide/3_advanced_usage.md index 8994b41..3e0ace1 100644 --- a/docs/dev_guide/3_advanced_usage.md +++ b/docs/dev_guide/3_advanced_usage.md @@ -7,7 +7,7 @@ how Application Framework would launch it. This repo provide a simple default file _config.xml.in_ that should work for simple application without interactions with others bindings. -It is recommanded that you use the sample one which is more complete. You can +It is recommended that you use the sample one which is more complete. You can find it at the same location under the name _config.xml.in.sample_ (stunning isn't it). Just copy the sample file to your _conf.d/wgt_ directory and name it _config.xml.in_, then edit it to fit your needs. @@ -30,10 +30,74 @@ application, macros make the difference using ***LABELS*** property. Choose between: - **BINDING**: Shared library that be loaded by the AGL Application Framework -- **HTDOCS**: Root directory of a web app -- **DATA**: Resources used by your application +- **BINDINGV2**: Shared library that be loaded by the AGL Application Framework + This has to be accompagnied with a JSON file named like the + *${OUTPUT_NAME}-apidef* of the target that describes the API with OpenAPI + syntax (e.g: *mybinding-apidef*). + Or Alternatively, you can choose the name, without the extension, using macro + **set_openapi_filename**. If you use C++, you have to set **PROJECT_LANGUAGES** + to *CXX*. +- **BINDINGV3**: Shared library that be loaded by the AGL Application Framework + This has to be accompagnied with a JSON file named like the + *${OUTPUT_NAME}-apidef* of the target that describes the API with OpenAPI + syntax (e.g: *mybinding-apidef*). + Or Alternatively, you can choose the name, without the extension, using macro + **set_openapi_filename**. If you use C++, you have to set **PROJECT_LANGUAGES** + to *CXX*. +- **PLUGIN**: Shared library are meant to be used as a binding plugin. A binding + would load it as a plugin to extend its functionnalities. It should be named + with a special extension that you choose with SUFFIX cmake target property or + it'd be **.ctlso** by default. +- **HTDOCS**: Root directory of a web app. This target has to build its + directory and puts its files in the ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_NAME} +- **DATA**: Resources used by your application. This target has to build its + directory and puts its files in the ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_NAME} - **EXECUTABLE**: Entry point of your application executed by the AGL Application Framework +- **LIBRARY**: An external 3rd party library bundled with the binding for its + own purpose because platform doesn't provide it. +- **BINDING-CONFIG**: Any files used as configuration by your binding. + +Optional **LABELS** are available to define which resources type your test +materials are: + +- **TEST-CONFIG**: JSON configuration files that will be used by the afb-test + binding to know how to execute tests. +- **TEST-DATA**: Resources used to test your binding. It is at least your test + plan and also could be fixtures and any needed files by your tests. These files + will appear in a separate test widget. +- **TEST-PLUGIN**: Shared library are meant to be used as a binding + plugin. A binding would load it as a plugin to extend its functionalities. It + should be named with a special extension that you choose with SUFFIX cmake + target property or it'd be **.ctlso** by default. +- **TEST-HTDOCS**: Root directory of a web app. This target has to build its + directory and put its files in the ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_NAME} +- **TEST-EXECUTABLE**: Entry point of your application executed by the AGL + Application Framework +- **TEST-LIBRARY**: An external 3rd party library bundled with the binding for its + own use in case of platform doesn't provide it. + +Here is a mapping between LABELS and directories where files will be placed in +the widget: + +- **EXECUTABLE** : \/bin +- **BINDING-CONFIG** : \/etc +- **BINDING** | **BINDINGV2** | **BINDINGV3** | **LIBRARY** : \/lib +- **PLUGIN** : \/lib/plugins +- **HTDOCS** : \/htdocs +- **BINDING-DATA** : \/var +- **DATA** : \/var + +And about test dedicated **LABELS**: + +- **TEST-EXECUTABLE** : \/bin +- **TEST-CONFIG** : \/etc +- **TEST-PLUGIN** : \/lib/plugins +- **TEST-HTDOCS** : \/htdocs +- **TEST-DATA** : \/var + +> **TIP** you should use the prefix _afb-_ with your **BINDING* targets which +> stand for **Application Framework Binding**. Example: @@ -44,13 +108,100 @@ SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES ) ``` -If your target output is not named as the ***TARGET_NAME***, you need to specify -***OUTPUT_NAME*** property that will be used by the ***populate_widget*** macro. +> **NOTE**: You doesn't need to specify an **INSTALL** command for these +> targets. This is already handle by template and will be installed in the +> following path : **${CMAKE_INSTALL_PREFIX}/${PROJECT_NAME}** + +> **NOTE**: if you want to set and use `rpath` with your target you should use +> and set the target property `INSTALL_RPATH`. + +## Add external 3rd party library + +### Build, link and ship external library with the project + +You could need to include an external library that isn't shipped in the +platform. Then you have to bundle the required library in the `lib` widget +directory. + +Templates includes some facilities to help you to do so. Classic way to do so +is to declare as many CMake ExternalProject as library you need. + +An ExternalProject is a special CMake module that let you define how to: +download, update, patch, configure, build and install an external project. It +doesn't have to be a CMake project and custom step could be added for special +needs using ExternalProject step. More informations on CMake [ExternalProject +documentation site](https://cmake.org/cmake/help/v3.5/module/ExternalProject.html?highlight=externalproject). + +Example to include `mxml` library for [unicens2-binding](https://github.com/iotbzh/unicens2-binding) +project: + +```cmake +set(MXML external-mxml) +set(MXML_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/mxml) +ExternalProject_Add(${MXML} + GIT_REPOSITORY https://github.com/michaelrsweet/mxml.git + GIT_TAG release-2.10 + SOURCE_DIR ${MXML_SOURCE_DIR} + CONFIGURE_COMMAND ./configure --build x86_64 --host aarch64 + BUILD_COMMAND make libmxml.so.1.5 + BUILD_IN_SOURCE 1 + INSTALL_COMMAND "" +) + +PROJECT_TARGET_ADD(mxml) + +add_library(${TARGET_NAME} SHARED IMPORTED GLOBAL) + +SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES + LABELS LIBRARY + IMPORTED_LOCATION ${MXML_SOURCE_DIR}/libmxml.so.1 + INTERFACE_INCLUDE_DIRECTORIES ${MXML_SOURCE_DIR} +) + +add_dependencies(${TARGET_NAME} ${MXML}) +``` + +Here we define an external project that drive the build of the library then we +define new CMake target of type **IMPORTED**. Meaning that this target hasn't +been built using CMake but is available at the location defined in the target +property *IMPORTED_LOCATION*. + +You could want to build the library as *SHARED* or *STATIC* depending on your needs +and goals. Then you only have to modify the external project configure step and change +filename used by **IMPORTED** library target defined after external project. + +Then target *LABELS* property is set to **LIBRARY** to ship it in the widget. + +Unicens project also need some header from this library, so we use the target +property *INTERFACE_INCLUDE_DIRECTORIES*. Setting that when another target link +to that imported target, it can access to the include directories. -Use the ***populate_widget*** macro as latest statement of your target -definition. Then at the end of your project definition you should use the macro -***build_widget*** that make an archive from the populated widget tree using the -`wgtpkg-pack` Application Framework tools. +We bound the target to the external project using a CMake dependency at last. + +Then this target could be use like any other CMake target and be linked etc. + +### Only link and ship external library with the project + +If you already have a binary version of the library that you want to use and you +can't or don't want to build the library then you only have to add an **IMPORTED** +library target. + +So, taking the above example, `mxml` library inclusion would be: + +```cmake +PROJECT_TARGET_ADD(mxml) + +add_library(${TARGET_NAME} SHARED IMPORTED GLOBAL) + +SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES + LABELS LIBRARY + IMPORTED_LOCATION /path/to/library/libmxml.so.1 + INTERFACE_INCLUDE_DIRECTORIES /path/to/mxml/include/dir +) +``` + +Finally, you can link any other lib or executable target with this imported +library like any other target. ## Macro reference @@ -90,3 +241,38 @@ anything: ```cmake project_subdirs_add("[0-9]-*") ``` + +### set_openapi_filename + +Used with a target labelized **BINDINGV2** to define the file name, and +possibly a relative path with the current *CMakeLists.txt*. + +If you don't use that macro to specify the name of your definition file +then the default one will be used, *${OUTPUT_NAME}-apidef* with +**OUTPUT_NAME** as the [target property]. + +> **CAUTION** you must only specify the name **WITHOUT** the extension. + +```cmake +set_openapi_filename('binding/mybinding_definition') +``` + +[target property]: https://cmake.org/cmake/help/v3.6/prop_tgt/OUTPUT_NAME.html "OUTPUT_NAME property documentation" + +### add_input_files + +Create custom target dedicated for HTML5 and data resource files. This macro +provides syntax and schema verification for differents languages which are +about now: LUA, JSON and XML. + +You could change the tools used to check files with the following variables: + +- XML_CHECKER: set to use **xmllint** provided with major linux distribution. +- LUA_CHECKER: set to use **luac** provided with major linux distribution. +- JSON_CHECKER: no tools found at the moment. + +```cmake +add_input_file("${MY_FILES_LIST}") +``` + +> **NOTE**: an issue at the check step on a file will stop at the build step.