# --------------------------------------------------
# Low-level macro to run bison once.
m4_define([AT_BISON_CHECK_],
-[AT_CHECK(AT_QUELL_VALGRIND[[ bison ]]$@)])
+[AT_CHECK(AT_QUELL_VALGRIND[[ bison -fno-caret ]]$@)])
# AT_BISON_CHECK_WARNINGS(BISON_ARGS, [OTHER_AT_CHECK_ARGS])
# when a tortured grammar's XML is known to be too large for xsltproc to
# handle.
m4_define([AT_BISON_CHECK_NO_XML],
-[AT_CHECK(m4_null_if([$2], [], [AT_QUELL_VALGRIND ])[[bison ]]$@)
+[AT_CHECK(m4_null_if([$2], [], [AT_QUELL_VALGRIND ])[[bison -fno-caret ]]$@)
AT_BISON_CHECK_WARNINGS($@)])
# AT_BISON_CHECK_XML(BISON_ARGS, [OTHER_AT_CHECK_ARGS])