[cmake] Added custom property to store compilation flags

miosix/cmake/miosix.cmake

@@ -74,6 +74,12 @@ define_property(TARGET
     BRIEF_DOCS "Preperty that stores the link libraries of the target"
 )
 
+# Creating property to store the link directories
+define_property(TARGET 
+    PROPERTY TARGET_CXX_FLAGS INHERITED 
+    BRIEF_DOCS "Preperty that stores the CXX flags of the target"
+)
+
 # Function to configure a target to be built for the kernel
 function(configure_target_for_kernel TARGET TYPE)
     # Include kernel directories
@@ -148,6 +154,7 @@ function(add_miosix_libraries BOARD_OPTIONS_FILE)
     set(INTERFACE_LIB interface-${BOARD_NAME})
     add_library(${INTERFACE_LIB} INTERFACE)
     configure_target_for_kernel(${INTERFACE_LIB} INTERFACE)
+    set_property(TARGET ${INTERFACE_LIB} PROPERTY TARGET_CXX_FLAGS ${CXXFLAGS_BASE})
 
     # Configure linker file and options
     set_property(TARGET ${KERNEL_LIB} PROPERTY INTERFACE_LINK_DEPENDS ${LINKER_SCRIPT})