yuzu/externals/SDL/build-scripts/updaterev.sh

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#!/bin/sh
#
# Generate a header file with the current source revision
outdir=`pwd`
cd `dirname $0`
srcdir=..
header=$outdir/include/SDL_revision.h
rev=`sh showrev.sh 2>/dev/null`
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if [ "$rev" != "" ]; then
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echo "#define SDL_REVISION \"$rev\"" >"$header.new"
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echo "#define SDL_REVISION_NUMBER 0" >>"$header.new"
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if diff $header $header.new >/dev/null 2>&1; then
rm "$header.new"
else
mv "$header.new" "$header"
fi
fi