- AX_CHECK_LIBRARY([MCHECK],[mcheck.h],[mcheck],[AX_APPEND_LINK_FLAGS([-lmcheck])])],
+ AX_CHECK_LIBRARY([MCHECK],[mcheck.h],[mcheck],[AX_APPEND_LINK_FLAGS([-lmcheck])])
+ AX_ADD_AM_MACRO([--debug],[AM_YFLAGS])
+ AX_ADD_AM_MACRO([-D_GLIBCXX_DEBUG],[AM_CPPFLAGS])],