* automake.in (lang_yacc_target_hook): Use AM_MAKEFLAGS in recursive $(MAKE) invocations. * lib/am/texibuild.am (?GENERIC_INFO?%SOURCE_SUFFIX%%DEST_SUFFIX%): Likewise. * lib/am/texi-vers.am (%STAMPVTI%): Likewise. * lib/am/remake-hdr.am (%CONFIG_H%): Likewise. * Makefile.am (maintainer-check): Check for this. Report from Stepan Kasal.