Blame a2ps-4.14-gperf.patch

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--- a2ps-4.14/configure.orig	2015-05-23 14:15:15.532064792 +0200
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+++ a2ps-4.14/configure	2015-05-23 14:17:17.108061667 +0200
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@@ -6296,9 +6296,9 @@
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 	{ echo "$as_me:$LINENO: checking for gperf - version >= $min_gperf_version" >&5
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 echo $ECHO_N "checking for gperf - version >= $min_gperf_version... $ECHO_C" >&6; }
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 	gperf_major_version=`$GPERF --version | \
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-		sed 's/GNU gperf \([0-9]*\).\([0-9]*\)/\1/'`
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+		grep 'GNU gperf' | sed 's/GNU gperf \([0-9]*\).\([0-9]*\).*$/\1/'`
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 	gperf_minor_version=`$GPERF --version | \
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-		sed 's/GNU gperf \([0-9]*\).\([0-9]*\)/\2/'`
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+		grep 'GNU gperf' | sed 's/GNU gperf \([0-9]*\).\([0-9]*\).*$/\2/'`
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 	no_gperf=""
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 	if test "$cross_compiling" = yes; then
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   /bin/true