chore(cpn): update to Qt 5.15.2 and rework application packaging (#4270)

Co-authored-by: raphaelcoeffic <raphael.coeffic@frafos.com>
Co-authored-by: philmoz <phil.a.mitchell@gmail.com>

cmake/FindDfuutil.cmake

@@ -0,0 +1,25 @@
+# - try to find program dfu-util
+
+set(DFU_UTIL_ROOT_DIR
+	"${DFU_UTIL_ROOT_DIR}"
+	CACHE
+	PATH
+  "Root directory to search for dfu-util")
+
+find_program(DFU_UTIL_PROGRAM
+  NAMES
+    dfu-util
+  HINTS
+    "${DFU_UTIL_ROOT_DIR}")
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(DFU_UTIL
+	DEFAULT_MSG
+	DFU_UTIL_PROGRAM)
+
+if(DFU_UTIL_FOUND)
+  set(DFU_UTIL_PATH "${DFU_UTIL_PROGRAM}")
+  mark_as_advanced(DFU_UTIL_ROOT_DIR)
+endif()
+
+mark_as_advanced(DFU_UTIL_PROGRAM)

cmake/FindLibssl1.cmake

@@ -0,0 +1,27 @@
+# - try to find libssl-1 library
+
+if (DEFINED ENV{LIBSSL1_ROOT_DIR})
+  set(LIBSSL1_ROOT_DIR "$ENV{LIBSSL1_ROOT_DIR}")
+endif()
+
+find_library(LIBSSL1_LIBRARY
+	NAMES
+    libssl.so.1.1
+    libssl-1_1.dll
+    libssl-1_1.dylib
+  HINTS
+    "${LIBSSL1_ROOT_DIR}")
+
+get_filename_component(LIBSSL1_LIBRARY_PATH ${LIBSSL1_LIBRARY} PATH)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LIBSSL1
+	DEFAULT_MSG
+	LIBSSL1_LIBRARY_PATH)
+
+if(LIBSSL1_FOUND)
+	set(LIBSSL1_LIBRARY_DIR "${LIBSSL1_LIBRARY_PATH}")
+	mark_as_advanced(LIBSSL1_ROOT_DIR)
+endif()
+
+mark_as_advanced(LIBSSL1_LIBRARY_PATH)

cmake/FindLibusb1.cmake

@@ -0,0 +1,31 @@
+# - try to find libusb-1 library
+
+set(LIBUSB1_ROOT_DIR
+	"${LIBUSB1_ROOT_DIR}"
+	CACHE
+	PATH
+	"Root directory to search for libusb-1")
+
+find_library(LIBUSB1_LIBRARY
+	NAMES
+    libusb-1.0
+    libusb-1.0.so
+    libusb-1.0.so.0
+    libusb-1.0.dll
+    libusb-1.0.dylib
+  HINTS
+    "${LIBUSB1_ROOT_DIR}")
+
+get_filename_component(LIBUSB1_LIBRARY_PATH ${LIBUSB1_LIBRARY} PATH)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LIBUSB1
+	DEFAULT_MSG
+	LIBUSB1_LIBRARY_PATH)
+
+if(LIBUSB1_FOUND)
+	set(LIBUSB1_LIBRARY_DIR "${LIBUSB1_LIBRARY_PATH}")
+	mark_as_advanced(LIBUSB1_ROOT_DIR)
+endif()
+
+mark_as_advanced(LIBUSB1_LIBRARY_PATH)

cmake/NativeTargets.cmake

@@ -23,12 +23,40 @@ if(Qt5Core_FOUND OR FOX_FOUND)
   set(SDL2_BUILDING_LIBRARY YES)  # this prevents FindSDL from appending SDLmain lib to the results, which we don't want
   find_package("SDL2")
   if(SDL2_FOUND)
-    message(STATUS "SDL2 Lib: ${SDL2_LIBRARIES}; Headers: ${SDL2_INCLUDE_DIRS}")
+    # find_package("SDL2") does not set a variable holding the path to the location of the SDL2 shared library
+    find_file(SDL2_LIB_PATH
+              NAMES
+                libSDL2.so
+                SDL2.dll
+                SDL2.dylib
+              HINTS
+                "/usr/lib/x86_64-linux-gnu"
+                ${SDL2_LIBRARY_PATH})
+    message(STATUS "SDL2 Lib: ${SDL2_LIB_PATH} Libs: ${SDL2_LIBRARIES}; Headers: ${SDL2_INCLUDE_DIRS}")
   else()
-    message(STATUS "SDL not found! Simulator audio, and joystick inputs, will not work.")
+    message(STATUS "SDL2 not found! Simulator audio, and joystick inputs, will not work.")
   endif()
 endif()
 
+if(Qt5Core_FOUND AND NOT DISABLE_COMPANION)
+  find_package(Libusb1)
+  if(LIBUSB1_FOUND)
+    find_package(Dfuutil)
+  endif()
+
+  if(LINUX)
+    find_package(Libssl1)
+  endif()
+
+  # OpenSSL
+  # environment variable set in github workflows and build-edgetx Dockerfile
+  if (DEFINED ENV{OPENSSL_ROOT_DIR})
+    set(OPENSSL_ROOT_DIR "$ENV{OPENSSL_ROOT_DIR}")
+  endif()
+
+  find_package(OpenSSL)
+endif()
+
 # Windows-specific includes and libs shared by sub-projects
 if(WIN32)
   list(APPEND WIN_INCLUDE_DIRS "${RADIO_SRC_DIR}/thirdparty/windows/dirent")