1# SPDX-License-Identifier: GPL-2.0 2 3# Ensure drm headers are self-contained and pass kernel-doc 4hdrtest-files := \ 5 $(shell cd $(src) && find * -name '*.h' 2>/dev/null) 6 7always-$(CONFIG_DRM_HEADER_TEST) += \ 8 $(patsubst %.h,%.hdrtest, $(hdrtest-files)) 9 10# Include the header twice to detect missing include guard. 11quiet_cmd_hdrtest = HDRTEST $(patsubst %.hdrtest,%.h,$@) 12 cmd_hdrtest = \ 13 $(CC) $(c_flags) -fsyntax-only -x c /dev/null -include $< -include $<; \ 14 PYTHONDONTWRITEBYTECODE=1 $(KERNELDOC) -none $(if $(CONFIG_WERROR)$(CONFIG_DRM_WERROR),-Werror) $<; \ 15 touch $@ 16 17$(obj)/%.hdrtest: $(src)/%.h FORCE 18 $(call if_changed_dep,hdrtest) 19