[nrf fromtree] cmake: make TARGET optional in set_linker_property()

The `check_set_linker_property()` and `set_linker_property()` takes a
target argument. Make the target argument optional and use the target
`linker` as default target.

The function name `set_linker_property()` already implies that we are
setting a property and the linker target.

Remove the need to specify `TARGET linker` when using the default linker
property target.

Signed-off-by: Torsten Rasmussen <[email protected]>
(cherry picked from commit 102b3fc)

Author: tejlmand

cmake/modules/extensions.cmake

@@ -2441,7 +2441,7 @@ endfunction()
 #            defined with a value.
 # APPEND: Flag indicated that the property should be appended to the existing
 #         value list for the property.
-# TARGET: Name of target on which to add the property (commonly: linker)
+# TARGET: Name of target on which to add the property (default: linker)
 # PROPERTY: Name of property with the value(s) following immediately after
 #           property name
 function(set_linker_property)
@@ -2454,6 +2454,10 @@ function(set_linker_property)
    set(APPEND "APPEND")
   endif()
 
+  if(NOT DEFINED LINKER_PROPERTY_TARGET)
+   set(LINKER_PROPERTY_TARGET "linker")
+  endif()
+
   if(LINKER_PROPERTY_NO_CREATE)
     list(GET LINKER_PROPERTY_PROPERTY 0 property_name)
     get_target_property(var ${LINKER_PROPERTY_TARGET} ${property_name})
@@ -2473,7 +2477,7 @@ endfunction()
 #
 # APPEND: Flag indicated that the property should be appended to the existing
 #         value list for the property.
-# TARGET: Name of target on which to add the property (commonly: linker)
+# TARGET: Name of target on which to add the property (default: linker)
 # PROPERTY: Name of property with the value(s) following immediately after
 #           property name
 function(check_set_linker_property)
@@ -2486,6 +2490,10 @@ function(check_set_linker_property)
    set(APPEND "APPEND")
   endif()
 
+  if(NOT DEFINED LINKER_PROPERTY_TARGET)
+   set(LINKER_PROPERTY_TARGET "linker")
+  endif()
+
   list(GET LINKER_PROPERTY_PROPERTY 0 property)
   list(REMOVE_AT LINKER_PROPERTY_PROPERTY 0)