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test/bin: add checkflags to detect flag changes

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This script can be used in a Makefile to detect flag changes
and to save the new flags in a file.

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
This commit is contained in:
Christian Couder 2015-04-06 17:52:28 +02:00
parent 8ad4d5031a
commit a2c41e650d
1 changed files with 23 additions and 0 deletions
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23
test/bin/checkflags Executable file
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#!/bin/sh
# Author: Christian Couder <chriscool@tuxfamily.org>
# MIT LICENSED
if test "$#" -lt 3
then
echo >&2 "usage $0 FILE VALUES MSG..."
exit 1
fi
FLAG_FILE="$1"
FLAG_VALS="$2"
shift
shift
FLAG_MSGS="$@"
# Use x in front of tested values as flags could be
# interpreted by "test" to be for itself.
if test x"$FLAG_VALS" != x"$(cat "$FLAG_FILE" 2>/dev/null)"
then
echo "$FLAG_MSGS"
echo "$FLAG_VALS" >"$FLAG_FILE"
fi