stop using the deprecated AM_PATH_CHECK in favor of PKG_CHECK_MODULES
stop using the deprecated AM_PATH_CHECK in favor of PKG_CHECK_MODULES

ldm5180/hammerhead,ldm5180/hammerhead,ldm5180/hammerhead,ldm5180/hammerhead,ldm5180/hammerhead,ldm5180/hammerhead,ldm5180/hammerhead