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AC_DEFUN([AC_PROG_ANTLR],[
if test -z "$ANTLR_JAR"; then
AC_REQUIRE([AC_PROG_JAVA])dnl
AC_MSG_CHECKING([for antlr $1.$2.$3 or better])
for antlr_lib_home in `ls -d /usr/local/share/antlr* 2> /dev/null` /usr/share/antlr/lib /usr/share/java /usr/lib; do
antlr_version_str=`$JAVA -classpath "$antlr_lib_home/antlr.jar" antlr.Tool 2>&1 | head -n 1 | sed '/.*Version */!d; s///;q'`
if test "$antlr_version_str"; then
antlr_version_regex='s/\([[[:digit:]]]\+\)\.\([[[:digit:]]]\+\)\.\([[[:digit:]]]\+\).*$/'
antlr_version_major=`echo $antlr_version_str | sed "$antlr_version_regex\\1/"`
antlr_version_minor=`echo $antlr_version_str | sed "$antlr_version_regex\\2/"`
antlr_version_micro=`echo $antlr_version_str | sed "$antlr_version_regex\\3/"`
(test $antlr_version_major -gt $1 ||
(test $antlr_version_major -eq $1 && \
test $antlr_version_minor -gt $2) || \
(test $antlr_version_major -eq $1 && \
test $antlr_version_minor -eq $2 && \
test $antlr_version_micro -ge $3)) && \
(test -z $ANTLR_JAR || \
(test $antlr_version_major -gt $antlr_use_major ||
(test $antlr_version_major -eq $antlr_use_major && \
test $antlr_version_minor -gt $antlr_use_minor) || \
(test $antlr_version_major -eq $antlr_use_major && \
test $antlr_version_minor -eq $antlr_use_minor && \
test $antlr_version_micro -ge $antlr_use_micro))) && \
ANTLR_JAR=$antlr_lib_home/antlr.jar && \
antlr_use_major=$antlr_version_major && \
antlr_use_minor=$antlr_version_minor && \
antlr_use_micro=$antlr_version_micro
fi
done
else
test -f $ANTLR_JAR || AC_MSG_ERROR([specified ANTLR jar file $ANTLR_JAR not found.]) \
&& AC_MSG_NOTICE([using ANTLR parser generator in $ANTLR_JAR])
fi
ANTLR="$JAVA -classpath $ANTLR_JAR antlr.Tool"
test -z $ANTLR_JAR && \
AC_MSG_ERROR(no suitable antlr.jar found for version $1.$2.$3)
AC_MSG_RESULT($antlr_use_major.$antlr_use_minor.$antlr_use_micro)
AC_SUBST(ANTLR)
AC_SUBST(ANTLR_JAR)
AC_PROVIDE([$0])dnl
])
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