Initialize compiler inside options desktop to know what compiler is used.

configs/options-desktop.cmake

@@ -20,6 +20,7 @@
 #
 ############################################################################
 lcb_add_dependent_option("Embedded OpenH264" "Embed the openh264 library instead of downloading it from Cisco." "${DEFAULT_VALUE_ENABLE_EMBEDDED_OPENH264}" "ENABLE_OPENH264" OFF)
+project(options-desktop LANGUAGES CXX)#Set CXX language to get compiler type while configuring
 
 # Define default values for the linphone builder options
 set(DEFAULT_VALUE_ENABLE_ADVANCED_IM ON)