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dnl Autoconf macro to check for the existence of grep
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dnl $Id: grep-check.m4,v 1.2 2002/02/14 18:02:04 jmarcus Exp $
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AC_DEFUN([AC_PROG_GREP], [
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AC_REQUIRE([AC_EXEEXT])dnl
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test x$GREP = x && AC_PATH_PROG(GREP, grep$EXEEXT, grep$EXEEXT)
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test x$GREP = x && AC_MSG_ERROR([no acceptable grep found in \$PATH])