Fix for CacheSettings documentation generation (#1352)

Added CMake settings to be able to generate documentation for code
under ifdef flag OLP_SDK_ENABLE_DEFAULT_CACHE.

Resolves: OLPEDGE-2737
Signed-off-by: Yevhen Krasilnyk <[email protected]>

Author: Smartkras

azure-pipelines.yml

@@ -48,7 +48,7 @@ jobs:
     LD_PRELOAD: "/lib/x86_64-linux-gnu/libSegFault.so"
     SEGFAULT_SIGNALS: "all"
   steps:
-    - bash: env && ls -la $ANDROID_HOME && ls -la $ANDROID_HOME/ndk-bundle
+    - bash: env && ls -la $ANDROID_HOME
       displayName: 'Verification of prerequisites'
     - bash: scripts/android/build.sh
       displayName: 'Android build and Examples'

docs/CMakeLists.txt

@@ -40,8 +40,11 @@ set(COMPONENT_DIRS
 )
 set(MAINPAGE_FILE README.md)
 set(DOXYGEN_USE_MDFILE_AS_MAINPAGE ${MAINPAGE_FILE})
+set(DOXYGEN_ENABLE_PREPROCESSING YES)
+set(DOXYGEN_MACRO_EXPANSION YES)
+set(DOXYGEN_EXPAND_ONLY_PREDEF YES)
+set(DOXYGEN_PREDEFINED OLP_SDK_ENABLE_DEFAULT_CACHE)
 doxygen_add_docs(docs
     ${COMPONENT_DIRS} ${MAINPAGE_FILE}
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/..
     COMMENT "Generate HTML documentation")
-