RIOT/makefiles/utils/checks.mk

# Utilities to produce errors inside Make
# Use this functions to produce friendlier error messages.

# Produce an error if the value is empty
#
# Parameters
#	value: a string which should not be empty
#	message: The error message to display.
# Returns:
#	the first argument, if it is not empty.
ensure_value = $(if $(1),$(1),$(error $(2)))
makefiles/utils: Add a function for checking that a string is not empty. A call to `$(ensure_value x,y)` will fail with message y if x is empty, and otherwise return x. This can be useto write more compact makefiles, while still producing friendly error messages. 2018-11-20 11:45:37 +01:00			`# Utilities to produce errors inside Make`
			`# Use this functions to produce friendlier error messages.`

			`# Produce an error if the value is empty`
			`#`
			`# Parameters`
			`# value: a string which should not be empty`
			`# message: The error message to display.`
			`# Returns:`
			`# the first argument, if it is not empty.`
			`ensure_value = $(if $(1),$(1),$(error $(2)))`