fi
dnl check bison version
- bison_min_version=1.35
- bison_version=`$BISON_PATH --version | head -n 1 | sed 's/^.*) //' | sed 's/[[a-zA-Z]]*$//' | cut -d' ' -f1`
+ dnl we need version >= 1.875 for the reentrancy support
+ dnl in the parser.
+ dnl First lines observed: 'bison (GNU Bison) 2.3' or 'GNU Bison version 1.28'
+ bison_min_version=1.875
+ bison_version=`$BISON_PATH --version | head -n 1 | sed 's/^[[^0-9]]*//' | sed 's/[[^0-9]]*$//' | cut -d' ' -f1`
AC_MSG_CHECKING([bison version $bison_version >= $bison_min_version])
- if perl -w <<EOF
- exit ($bison_version < $bison_min_version) ? 0 : 1;
-EOF
- then
+ if perl -we "exit ((v$bison_version ge v$bison_min_version) ? 0 : 1)"; then
AC_MSG_RESULT([yes])
- else
- AC_MSG_RESULT([no])
- AC_MSG_ERROR([Your bison version is too old, $bison_min_version or later is required.])
+ else
+ AC_MSG_ERROR([no])
fi
])
if test x$FLEX_PATH = xno; then
AC_MSG_ERROR(Could not find flex)
fi
-
+
dnl check flex version
- dnl FIXME 0.11: we need version >= 2.5.31 for the reentrancy support
- dnl in the parser. If an older version is installed pre-generated
- dnl sources are used. This should become a hard dependency for 0.11!
+ dnl we need version >= 2.5.31 for the reentrancy support
+ dnl in the parser.
flex_min_version=2.5.31
- flex_version=`$FLEX_PATH --version | head -n 1 | sed 's/^.* //' | sed 's/[[a-zA-Z]]*$//' | cut -d' ' -f1`
+ flex_version=`$FLEX_PATH --version | head -n 1 | awk '{print $2}'`
AC_MSG_CHECKING([flex version $flex_version >= $flex_min_version])
if perl -w <<EOF
(\$min_version_major, \$min_version_minor, \$min_version_micro ) = "$flex_min_version" =~ /(\d+)\.(\d+)\.(\d+)/;
EOF
then
AC_MSG_RESULT(yes)
- AM_CONDITIONAL(GENERATE_PARSER, true)
else
- AC_MSG_RESULT(no, using pre-generated parser sources)
- AM_CONDITIONAL(GENERATE_PARSER, false)
+ AC_MSG_ERROR([no])
fi
])