cmake: Add option to disable examples

The examples conflict with the logging tests so they can be disabled if
not needed.

README.md

@@ -163,6 +163,9 @@ pytest -v tests/integration
 
 ## Examples
 
+The examples can be enabled (or disabled) with the CMake cache variable `WAKAAMA_ENABLE_EXAMPLES` (e.g.
+`cmake -DWAKAAMA_ENABLE_EXAMPLES=OFF`).
+
 There are some example applications provided to test the server, client and bootstrap capabilities of Wakaama.
 The following recipes assume you are on a unix like platform and you have cmake and make installed.
 

examples/bootstrap_server/CMakeLists.txt

@@ -4,7 +4,9 @@ project(bootstrap_server C)
 
 include(../../wakaama.cmake)
 
-add_executable(bootstrap_server bootstrap_info.c bootstrap_server.c bootstrap_info.h bootstrap_server.ini)
-target_compile_definitions(bootstrap_server PRIVATE LWM2M_BOOTSTRAP_SERVER_MODE)
-target_sources_wakaama(bootstrap_server)
-target_sources_shared(bootstrap_server)
+if(WAKAAMA_ENABLE_EXAMPLES)
+    add_executable(bootstrap_server bootstrap_info.c bootstrap_server.c bootstrap_info.h bootstrap_server.ini)
+    target_compile_definitions(bootstrap_server PRIVATE LWM2M_BOOTSTRAP_SERVER_MODE)
+    target_sources_wakaama(bootstrap_server)
+    target_sources_shared(bootstrap_server)
+endif()

examples/client/CMakeLists.txt

@@ -4,38 +4,41 @@ project(lwm2mclient C)
 
 include(../../wakaama.cmake)
 
-set(SOURCES
-    lwm2mclient.c
-    lwm2mclient.h
-    object_access_control.c
-    object_connectivity_moni.c
-    object_connectivity_stat.c
-    object_device.c
-    object_firmware.c
-    object_location.c
-    object_security.c
-    object_server.c
-    object_test.c
-    system_api.c
-)
+if(WAKAAMA_ENABLE_EXAMPLES)
+    set(SOURCES
+        lwm2mclient.c
+        lwm2mclient.h
+        object_access_control.c
+        object_connectivity_moni.c
+        object_connectivity_stat.c
+        object_device.c
+        object_firmware.c
+        object_location.c
+        object_security.c
+        object_server.c
+        object_test.c
+        system_api.c
+    )
 
-# Client without DTLS support
-add_executable(lwm2mclient ${SOURCES})
-target_compile_definitions(lwm2mclient PRIVATE LWM2M_CLIENT_MODE LWM2M_BOOTSTRAP LWM2M_SUPPORT_SENML_JSON)
-target_sources_wakaama(lwm2mclient)
-target_sources_shared(lwm2mclient)
+    # Client without DTLS support
+    add_executable(lwm2mclient ${SOURCES})
+    target_compile_definitions(lwm2mclient PRIVATE LWM2M_CLIENT_MODE LWM2M_BOOTSTRAP LWM2M_SUPPORT_SENML_JSON)
+    target_sources_wakaama(lwm2mclient)
+    target_sources_shared(lwm2mclient)
 
-# Client without raw block 1 requests DTLS support
-add_executable(lwm2mclient_raw_block1 ${SOURCES})
-target_compile_definitions(
-    lwm2mclient_raw_block1 PRIVATE LWM2M_CLIENT_MODE LWM2M_BOOTSTRAP LWM2M_SUPPORT_SENML_JSON LWM2M_RAW_BLOCK1_REQUESTS
-)
-target_sources_wakaama(lwm2mclient_raw_block1)
-target_sources_shared(lwm2mclient_raw_block1)
+    # Client without raw block 1 requests DTLS support
+    add_executable(lwm2mclient_raw_block1 ${SOURCES})
+    target_compile_definitions(
+        lwm2mclient_raw_block1 PRIVATE LWM2M_CLIENT_MODE LWM2M_BOOTSTRAP LWM2M_SUPPORT_SENML_JSON
+                                       LWM2M_RAW_BLOCK1_REQUESTS
+    )
+    target_sources_wakaama(lwm2mclient_raw_block1)
+    target_sources_shared(lwm2mclient_raw_block1)
 
-# Client with DTLS support provided by tinydtls
-add_executable(lwm2mclient_tinydtls ${SOURCES})
-set_target_properties(lwm2mclient_tinydtls PROPERTIES CONNECTION_IMPLEMENTATION "tinydtls")
-target_compile_definitions(lwm2mclient_tinydtls PRIVATE LWM2M_CLIENT_MODE LWM2M_BOOTSTRAP LWM2M_SUPPORT_SENML_JSON)
-target_sources_wakaama(lwm2mclient_tinydtls)
-target_sources_shared(lwm2mclient_tinydtls)
+    # Client with DTLS support provided by tinydtls
+    add_executable(lwm2mclient_tinydtls ${SOURCES})
+    set_target_properties(lwm2mclient_tinydtls PROPERTIES CONNECTION_IMPLEMENTATION "tinydtls")
+    target_compile_definitions(lwm2mclient_tinydtls PRIVATE LWM2M_CLIENT_MODE LWM2M_BOOTSTRAP LWM2M_SUPPORT_SENML_JSON)
+    target_sources_wakaama(lwm2mclient_tinydtls)
+    target_sources_shared(lwm2mclient_tinydtls)
+endif()

examples/lightclient/CMakeLists.txt

@@ -4,7 +4,9 @@ project(lightclient C)
 
 include(../../wakaama.cmake)
 
-add_executable(lightclient lightclient.c object_device.c object_security.c object_server.c object_test.c)
-target_compile_definitions(lightclient PRIVATE LWM2M_CLIENT_MODE)
-target_sources_wakaama(lightclient)
-target_sources_shared(lightclient)
+if(WAKAAMA_ENABLE_EXAMPLES)
+    add_executable(lightclient lightclient.c object_device.c object_security.c object_server.c object_test.c)
+    target_compile_definitions(lightclient PRIVATE LWM2M_CLIENT_MODE)
+    target_sources_wakaama(lightclient)
+    target_sources_shared(lightclient)
+endif()

examples/server/CMakeLists.txt

@@ -4,7 +4,9 @@ project(lwm2mserver C)
 
 include(../../wakaama.cmake)
 
-add_executable(lwm2mserver lwm2mserver.c)
-target_compile_definitions(lwm2mserver PRIVATE LWM2M_SERVER_MODE)
-target_sources_wakaama(lwm2mserver)
-target_sources_shared(lwm2mserver)
+if(WAKAAMA_ENABLE_EXAMPLES)
+    add_executable(lwm2mserver lwm2mserver.c)
+    target_compile_definitions(lwm2mserver PRIVATE LWM2M_SERVER_MODE)
+    target_sources_wakaama(lwm2mserver)
+    target_sources_shared(lwm2mserver)
+endif()

wakaama.cmake

@@ -25,6 +25,9 @@ set(WAKAAMA_LOG_MAX_MSG_TXT_SIZE
     CACHE STRING "The buffer size for the log message (without additional data)"
 )
 
+# Possibility to disable the examples
+option(WAKAAMA_ENABLE_EXAMPLES "Build all the example applications" ON)
+
 # Set the defines for logging configuration
 function(set_defines target)
     # Logging