| Server IP : 74.208.127.88 / Your IP : 216.73.216.124 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /proc/self/root/lib/modules/5.4.0-163-generic/build/scripts/kconfig/tests/preprocess/escape/ |
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# SPDX-License-Identifier: GPL-2.0
# Shorthand
warning = $(warning-if,y,$(1))
# You can not pass commas directly to a function since they are treated as
# delimiters. You can use the following trick to do so.
comma := ,
$(warning,hello$(comma) world)
# Like Make, single quotes, double quotes, spaces are treated verbatim.
# The following prints the text as-is.
$(warning, ' " '" ' ''' "'")
# Unlike Make, '$' has special meaning only when it is followed by '('.
# No need to escape '$' itself.
$(warning,$)
$(warning,$$)
$ := 1
$(warning,$($))
# You need a trick to escape '$' followed by '('
# The following should print "$(X)". It should not be expanded further.
dollar := $
$(warning,$(dollar)(X))
# You need a trick to treat unbalanced parentheses.
# The following should print "(".
left_paren := (
$(warning,$(left_paren))
# A simple expanded should not be expanded multiple times.
# The following should print "$(X)". It should not be expanded further.
Y := $(dollar)(X)
$(warning,$(Y))
# The following should print "$(X)" as well.
Y = $(dollar)(X)
$(warning,$(Y))
# The following should print "$(".
# It should not be emit "unterminated reference" error.
unterminated := $(dollar)(
$(warning,$(unterminated))