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authorRomain Forlot <romain.forlot@iot.bzh>2017-12-05 10:39:40 +0100
committerRomain Forlot <romain.forlot@iot.bzh>2017-12-05 10:39:40 +0100
commit935c39052d657359414fc395192767f5ac81abb5 (patch)
treef57f032b9e1a128a490e92224cd9052b1fc27cc8 /docs/dev_guide/3_advanced_usage.md
parentdc4debf13f6653163ea969ec57945edd9545c748 (diff)
Details external library.
Linting and little typo fixes. Change-Id: I714477b429c9257595ee8eae05ba1ef4901234a2 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to 'docs/dev_guide/3_advanced_usage.md')
-rw-r--r--docs/dev_guide/3_advanced_usage.md33
1 files changed, 32 insertions, 1 deletions
diff --git a/docs/dev_guide/3_advanced_usage.md b/docs/dev_guide/3_advanced_usage.md
index ae8d1ec..c08123a 100644
--- a/docs/dev_guide/3_advanced_usage.md
+++ b/docs/dev_guide/3_advanced_usage.md
@@ -70,6 +70,8 @@ SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES
## Add external 3rd party library
+### Build, link and ship external library with the project
+
You could need to include an external library that isn't shipped in the
platform. Then you have to bundle the required library in the `lib` widget
directory.
@@ -114,9 +116,13 @@ add_dependencies(${TARGET_NAME} ${MXML})
Here we define an external project that drive the build of the library then we
define new CMake target of type **IMPORTED**. Meaning that this target hasn't
-be built using CMake but is available at the location defined in the target
+been built using CMake but is available at the location defined in the target
property *IMPORTED_LOCATION*.
+You could want to build the library as *SHARED* or *STATIC* depending on your needs
+and goals. Then you only have to modify the external project configure step and change
+filename used by **IMPORTED** library target defined after external project.
+
Then target *LABELS* property is set to **LIBRARY** to ship it in the widget.
Unicens project also need some header from this library, so we use the target
@@ -125,6 +131,31 @@ to that imported target, it can access to the include directories.
We bound the target to the external project using a CMake dependency at last.
+Then this target could be use like any other CMake target and be linked etc.
+
+### Only link and ship external library with the project
+
+If you already have a binary version of the library that you want to use and you
+can't or don't want to build the library then you only have to add an **IMPORTED**
+library target.
+
+So, taking the above example, `mxml` library inclusion would be:
+
+```cmake
+PROJECT_TARGET_ADD(mxml)
+
+add_library(${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
### PROJECT_TARGET_ADD