enable building IRQ-based examples

IRQ support is now technically available in all RF24 drivers. This updates the examples' build config accordingly.

examples/CMakeLists.txt

@@ -44,15 +44,13 @@ elseif("${RF24_DRIVER}" STREQUAL "wiringPi")
     else()
         message(FATAL "Lib ${RF24_DRIVER} not found.")
     endif()
-elseif(NOT "${LibPIGPIO}" STREQUAL "LibPIGPIO-NOTFOUND" AND NOT DEFINED RF24_NO_INTERRUPT)
-    if(NOT "${RF24_DRIVER}" STREQUAL "pigpio")
-        message(STATUS "linking to ${LibPIGPIO} for interrupt support")
-    else()
+elseif(NOT "${RF24_DRIVER}" STREQUAL "pigpio")
+    if(NOT "${LibPIGPIO}" STREQUAL "LibPIGPIO-NOTFOUND")
         message(STATUS "linking to ${LibPIGPIO}")
+        list(APPEND linked_libs ${LibPIGPIO})
+    else()
+        message(FATAL "lib ${RF24_DRIVER} not found.")
     endif()
-    list(APPEND linked_libs ${LibPIGPIO})
-else()
-    message(STATUS "Disabling IRQ pin support")
 endif()
 
 set(example RF24GatewayNode)
@@ -63,24 +61,12 @@ add_executable(${example} ${example}.cpp)
 target_link_libraries(${example} PUBLIC
     ${linked_libs}
 )
-if("${LibPIGPIO}" STREQUAL "LibPIGPIO-NOTFOUND" OR DEFINED RF24_NO_INTERRUPT)
-    target_compile_definitions(${example} PUBLIC RF24_NO_INTERRUPT)
-endif()
-
-if("${RF24_DRIVER}" STREQUAL "MRAA" OR "${RF24_DRIVER}" STREQUAL "wiringPi")
-    message(STATUS "skipping gwNodeInt example because it is incompatible with selected driver")
-elseif(NOT "${LibPIGPIO}" STREQUAL "LibPIGPIO-NOTFOUND" AND NOT DEFINED RF24_NO_INTERRUPT)
-    add_subdirectory(gwNodeInt)
-endif()
 
+add_subdirectory(gwNodeInt)
 add_subdirectory(addons/Sniffer)
 
 include(../cmake/enableNcursesExample.cmake)
 if(BUILD_NCURSES_EXAMPLE)
     add_subdirectory(ncurses)
-    if("${RF24_DRIVER}" STREQUAL "MRAA" OR "${RF24_DRIVER}" STREQUAL "wiringPi")
-        message(STATUS "skipping ncursesInt example because it is incompatible with selected driver")
-    elseif(NOT "${LibPIGPIO}" STREQUAL "LibPIGPIO-NOTFOUND" AND NOT DEFINED RF24_NO_INTERRUPT)
-        add_subdirectory(ncursesInt)
-    endif()
+    add_subdirectory(ncursesInt)
 endif()