mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-16 17:44:19 +00:00
0dfa3dea7d
This is another small addition to the build system utlities to make it easier to determine the truthiness of an arbitrary value. This change adds the `bool` function, which takes a value and determines whether the value is "truthy". We consider a value to be truthy if it is NOT one of: "0", "n", "no", "f" or "false" (all case-insensitive). If the value is truthy then it is returned as-is. Otherwise, no value is returned. Change-Id: I19347f4c3ae00a6b448514a28cc2d9d06f683f25 Signed-off-by: Chris Kay <chris.kay@arm.com>
102 lines
2.2 KiB
Makefile
102 lines
2.2 KiB
Makefile
#
|
||
# Copyright (c) 2024, Arm Limited and Contributors. All rights reserved.
|
||
#
|
||
# SPDX-License-Identifier: BSD-3-Clause
|
||
#
|
||
|
||
space :=
|
||
space := $(space) $(space)
|
||
comma := ,
|
||
|
||
null := <20>
|
||
|
||
compat-path = $(subst $(space),$(null),$(1))
|
||
decompat-path = $(subst $(null), ,$(1))
|
||
|
||
absolute-path = $(call decompat-path,$(abspath $(call compat-path,$(1))))
|
||
real-path = $(call decompat-path,$(realpath $(call compat-path,$(1))))
|
||
|
||
file-name = $(call decompat-path,$(notdir $(call compat-path,$(1))))
|
||
directory-name = $(call decompat-path,$(dir $(call compat-path,$(1))))
|
||
|
||
escape-shell = '$(subst ','\'',$(1))'
|
||
|
||
#
|
||
# Upper-case a string value.
|
||
#
|
||
# Parameters:
|
||
#
|
||
# - $(1): The string to upper-case.
|
||
#
|
||
# Example usage:
|
||
#
|
||
# $(call uppercase,HeLlO wOrLd) # "HELLO WORLD"
|
||
#
|
||
|
||
uppercase = $(shell echo $(call escape-shell,$(1)) | tr '[:lower:]' '[:upper:]')
|
||
|
||
#
|
||
# Lower-case a string value.
|
||
#
|
||
# Parameters:
|
||
#
|
||
# - $(1): The string to lower-case.
|
||
#
|
||
# Example usage:
|
||
#
|
||
# $(call lowercase,HeLlO wOrLd) # "hello world"
|
||
#
|
||
|
||
lowercase = $(shell echo $(call escape-shell,$(1)) | tr '[:upper:]' '[:lower:]')
|
||
|
||
#
|
||
# Determine the "truthiness" of a value.
|
||
#
|
||
# Parameters:
|
||
#
|
||
# - $(1): The value to determine the truthiness of.
|
||
#
|
||
# A value is considered to be falsy if it is:
|
||
#
|
||
# - empty, or
|
||
# - equal to "0", "N", "NO", "F" or "FALSE" after upper-casing.
|
||
#
|
||
# If the value is truthy then the value is returned as-is, otherwise no value
|
||
# is returned.
|
||
#
|
||
# Example usage:
|
||
#
|
||
# truthy := y
|
||
# truthy-bool := $(call bool,$(truthy)) # "y"
|
||
#
|
||
# falsy := n
|
||
# falsy-bool := $(call bool,$(falsy)) # <empty>
|
||
#
|
||
|
||
bool = $(filter-out 0 n no f false,$(call lowercase,$(1)))
|
||
|
||
#
|
||
# Determine the "truthiness" of a value, returning 0 or 1.
|
||
#
|
||
# Parameters:
|
||
#
|
||
# - $(1): The value to determine the truthiness of.
|
||
#
|
||
# A value is considered to be falsy if it is:
|
||
#
|
||
# - empty, or
|
||
# - equal to "0", "N", "NO", "F" or "FALSE" after upper-casing.
|
||
#
|
||
# If the value is truthy then the value is returned as-is, otherwise no value
|
||
# is returned.
|
||
#
|
||
# Example usage:
|
||
#
|
||
# truthy := y
|
||
# truthy-bool := $(call bool,$(truthy)) # "1"
|
||
#
|
||
# falsy := n
|
||
# falsy-bool := $(call bool,$(falsy)) # "0"
|
||
#
|
||
|
||
bool-01 = $(if $(call bool,$(1)),1,0)
|