Exposing 'DRIVELIST_FILTER_SYSTEM_DRIVES' as a cmake variable

Makes the filtering-behaviour userconfigureable during compile-time.
This way its easier to configure the imager for flashing SATA or NVME
Drives installed in your system (because of lack of adapters),
or if the drives are (accidentally) labled as systemdrives by drivelist.

src/CMakeLists.txt

@@ -4,6 +4,7 @@
 cmake_minimum_required(VERSION 3.9.4)
 OPTION (ENABLE_CHECK_VERSION "Check for version updates" ON)
 OPTION (ENABLE_TELEMETRY "Enable sending telemetry" ON)
+OPTION (DRIVELIST_FILTER_SYSTEM_DRIVES "Filter System drives from displayed drives" ON)
 
 project(rpi-imager LANGUAGES CXX C)
 set(IMAGER_VERSION_MAJOR 1)
@@ -164,6 +165,13 @@ else()
     add_definitions(-DCHECK_VERSION_DEFAULT=false)
 endif()
 
+if(DRIVELIST_FILTER_SYSTEM_DRIVES)
+   # Hide system drives from list
+   add_definitions(-DDRIVELIST_FILTER_SYSTEM_DRIVES=true)
+else()
+   add_definitions(-DDRIVELIST_FILTER_SYSTEM_DRIVES=false)
+endif()
+
 # Because dependencies are typically not available by default on Windows, build bundled code
 if (WIN32)
     # Target Windows 7 (needed for drivelist module)

src/config.h

@@ -19,9 +19,6 @@
 /* Hash algorithm for verifying (uncompressed image) checksum */
 #define OSLIST_HASH_ALGORITHM             QCryptographicHash::Sha256
 
-/* Hide system drives from list */
-#define DRIVELIST_FILTER_SYSTEM_DRIVES    true
-
 /* Update progressbar every 0.1 second */
 #define PROGRESS_UPDATE_INTERVAL          100