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7c4e1eea61
This change introduces a few helper variables for dealing with verbose
and silent build modes: `silent`, `verbose`, `q` and `s`.
The `silent` and `verbose` variables are boolean values determining
whether the build system has been configured to run silently or
verbosely respectively (i.e. with `--silent` or `V=1`).
These two modes cannot be used together - if `silent` is truthy then
`verbose` is always falsy. As such:
make --silent V=1
... results in a silent build.
In addition to these boolean variables, we also introduce two new
variables - `s` and `q` - for use in rule recipes to conditionally
suppress the output of commands.
When building silently, `s` expands to a value which disables the
command that follows, and `q` expands to a value which supppresses
echoing of the command:
$(s)echo 'This command is neither echoed nor executed'
$(q)echo 'This command is executed but not echoed'
When building verbosely, `s` expands to a value which disables the
command that follows, and `q` expands to nothing:
$(s)echo 'This command is neither echoed nor executed'
$(q)echo 'This command is executed and echoed'
In all other cases, both `s` and `q` expand to a value which suppresses
echoing of the command that follows:
$(s)echo 'This command is executed but not echoed'
$(q)echo 'This command is executed but not echoed'
The `s` variable is predominantly useful for `echo` commands, where you
always want to suppress echoing of the command itself, whilst `q` is
more useful for all other commands.
Change-Id: I8d8ff6ed714d3cb401946c52955887ed7dca602b
Signed-off-by: Chris Kay <chris.kay@arm.com>
60 lines
1.4 KiB
Makefile
60 lines
1.4 KiB
Makefile
#
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# Copyright (c) 2016-2024, Arm Limited and Contributors. All rights reserved.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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# Trusted Firmware shell command definitions for a Unix style environment.
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ifndef UNIX_MK
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UNIX_MK := $(lastword $(MAKEFILE_LIST))
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DIR_DELIM := /
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PATH_SEP := :
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# These defines provide Unix style equivalents of the shell commands
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# required by the Trusted Firmware build environment.
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# ${1} is the file to be copied.
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# ${2} is the destination file name.
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define SHELL_COPY
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$(q)cp -f "${1}" "${2}"
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endef
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# ${1} is the directory to be copied.
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# ${2} is the destination directory path.
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define SHELL_COPY_TREE
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$(q)cp -rf "${1}" "${2}"
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endef
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# ${1} is the file to be deleted.
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define SHELL_DELETE
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-$(q)rm -f "${1}"
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endef
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# ${1} is a space delimited list of files to be deleted.
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# Note that we do not quote ${1}, as multiple parameters may be passed.
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define SHELL_DELETE_ALL
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-$(q)rm -rf ${1}
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endef
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# ${1} is the directory to be generated.
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# ${2} is optional, and allows a prerequisite to be specified.
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# Do nothing if $1 == $2, to ignore self dependencies.
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define MAKE_PREREQ_DIR
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ifneq (${1},${2})
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${1} : ${2}
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$(q)mkdir -p "${1}"
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endif
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endef
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define SHELL_REMOVE_DIR
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-$(q)rm -rf "${1}"
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endef
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nul := /dev/null
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which = $(shell command -v $(call escape-shell,$(1)) 2>$(nul))
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endif
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