automate building of ncurses example

.github/workflows/build_linux.yml

@@ -162,7 +162,7 @@ jobs:
         working-directory: ${{ github.workspace }}/build
         # doesn't build the RF24Mesh_Ncurses_Master example because we haven't cross-compiled it in this workflow
         run: |
-          make RF24Mesh_Example RF24Mesh_Example_Master
+          cmake --build .
           file ./RF24Mesh_Example
 
       # cross-compiling a python C extension is better done with pypa/cibuildwheel action

cmake/enableNcursesExample.cmake

@@ -0,0 +1,15 @@
+find_package(Curses)
+if(Curses_FOUND)
+    include_directories(${CURSES_INCLUDE_DIR})
+    option(BUILD_NCURSES_EXAMPLE
+        "Enable/Disable building the ncurses example (requires libncurses5-dev installed)"
+        ON
+    )
+else()
+    message(STATUS "libncurses5-dev not found. Skipping ncurses example")
+    option(BUILD_NCURSES_EXAMPLE
+        "Enable/Disable building the ncurses example (requires libncurses5-dev installed)"
+        OFF
+    )
+endif()
+message(STATUS "BUILD_NCURSES_EXAMPLE set to ${BUILD_NCURSES_EXAMPLE}")

examples_RPi/CMakeLists.txt

@@ -29,4 +29,7 @@ foreach(example ${EXAMPLES_LIST})
     target_link_libraries(${example} PUBLIC ${RF24} pthread ${RF24Network} ${RF24Mesh})
 endforeach()
 
-add_subdirectory(ncurses)
+include(../cmake/enableNcursesExample.cmake)
+if(BUILD_NCURSES_EXAMPLE)
+    add_subdirectory(ncurses)
+endif()