-dnl generate boilerplate code for the (new) parser.
-dnl Only developers need this tool.
-AC_PATH_PROG(AUTOGEN, autogen, "")
-AC_CHECK_FILE([ginac/parser/builtin_fcns.cpp], [],
- [AS_IF([test -z "$AUTOGEN"], [GINAC_ERROR([Source will not compile, because autogen is missing.])])])
-