1 AC_DEFUN([AG_GST_BISON_CHECK],
3 dnl FIXME: check if AC_PROG_YACC is suitable here
4 dnl FIXME: make precious
5 AC_PATH_PROG(BISON_PATH, bison, no)
6 if test x$BISON_PATH = xno; then
7 AC_MSG_ERROR(Could not find bison)
10 dnl check bison version
11 dnl FIXME 0.11: we need version >= 1.875 for the reentrancy support
12 dnl in the parser. If an older version is installed pre-generated
13 dnl sources are used. This should become a hard dependency for 0.11!
14 bison_min_version=1.875
15 bison_version=`$BISON_PATH --version | head -n 1 | sed 's/^.*) //' | sed 's/[[a-zA-Z]]*$//' | cut -d' ' -f1`
16 AC_MSG_CHECKING([bison version $bison_version >= $bison_min_version])
19 exit ($bison_version < $bison_min_version) ? 0 : 1;
23 AM_CONDITIONAL(GENERATE_PARSER, test -z $GENERATE_PARSER_TRUE)
25 AC_MSG_RESULT([no, using pre-generated parser sources])
26 AM_CONDITIONAL(GENERATE_PARSER, false)
30 AC_DEFUN([AG_GST_FLEX_CHECK],
32 dnl we require flex for building the parser
33 AC_PATH_PROG(FLEX_PATH, flex, no)
34 if test x$FLEX_PATH = xno; then
35 AC_MSG_ERROR(Could not find flex)
38 dnl check flex version
39 dnl FIXME 0.11: we need version >= 2.5.31 for the reentrancy support
40 dnl in the parser. If an older version is installed pre-generated
41 dnl sources are used. This should become a hard dependency for 0.11!
42 flex_min_version=2.5.31
43 flex_version=`$FLEX_PATH --version | head -n 1 | sed 's/^.* //' | sed 's/[[a-zA-Z]]*$//' | cut -d' ' -f1`
44 AC_MSG_CHECKING([flex version $flex_version >= $flex_min_version])
46 (\$min_version_major, \$min_version_minor, \$min_version_micro ) = "$flex_min_version" =~ /(\d+)\.(\d+)\.(\d+)/;
47 (\$flex_version_major, \$flex_version_minor, \$flex_version_micro ) = "$flex_version" =~ /(\d+)\.(\d+)\.(\d+)/;
48 exit (((\$flex_version_major > \$min_version_major) ||
49 ((\$flex_version_major == \$min_version_major) &&
50 (\$flex_version_minor > \$min_version_minor)) ||
51 ((\$flex_version_major == \$min_version_major) &&
52 (\$flex_version_minor == \$min_version_minor) &&
53 (\$flex_version_micro >= \$min_version_micro)))
58 AM_CONDITIONAL(GENERATE_PARSER, test -z $GENERATE_PARSER_TRUE)
60 AC_MSG_RESULT([no, using pre-generated parser sources])
61 AM_CONDITIONAL(GENERATE_PARSER, false)