1d6fc9fcbSMasahiro Yamada# SPDX-License-Identifier: GPL-2.0-only 2d6fc9fcbSMasahiro Yamada 3d6fc9fcbSMasahiro Yamada# Unlike the kernel space, exported headers are written in standard C. 4d6fc9fcbSMasahiro Yamada# - Forbid C++ style comments 5d6fc9fcbSMasahiro Yamada# - Use '__inline__', '__asm__' instead of 'inline', 'asm' 6d6fc9fcbSMasahiro Yamada# 7d6fc9fcbSMasahiro Yamada# -std=c90 (equivalent to -ansi) catches the violation of those. 8d6fc9fcbSMasahiro Yamada# We cannot go as far as adding -Wpedantic since it emits too many warnings. 9d6fc9fcbSMasahiro YamadaUAPI_CFLAGS := -std=c90 -Wall -Werror=implicit-function-declaration 10d6fc9fcbSMasahiro Yamada 11d6fc9fcbSMasahiro Yamadaoverride c_flags = $(UAPI_CFLAGS) -Wp,-MD,$(depfile) -I$(objtree)/usr/include 12d6fc9fcbSMasahiro Yamada 13d6fc9fcbSMasahiro Yamada# The following are excluded for now because they fail to build. 14d6fc9fcbSMasahiro Yamada# 15d6fc9fcbSMasahiro Yamada# Do not add a new header to the blacklist without legitimate reason. 16d6fc9fcbSMasahiro Yamada# Please consider to fix the header first. 17d6fc9fcbSMasahiro Yamada# 18d6fc9fcbSMasahiro Yamada# Sorted alphabetically. 19d6fc9fcbSMasahiro Yamadaheader-test- += asm/ipcbuf.h 20d6fc9fcbSMasahiro Yamadaheader-test- += asm/msgbuf.h 21d6fc9fcbSMasahiro Yamadaheader-test- += asm/sembuf.h 22d6fc9fcbSMasahiro Yamadaheader-test- += asm/shmbuf.h 23d6fc9fcbSMasahiro Yamadaheader-test- += asm/signal.h 24d6fc9fcbSMasahiro Yamadaheader-test- += asm/ucontext.h 25d6fc9fcbSMasahiro Yamadaheader-test- += drm/vmwgfx_drm.h 26d6fc9fcbSMasahiro Yamadaheader-test- += linux/am437x-vpfe.h 27d6fc9fcbSMasahiro Yamadaheader-test- += linux/android/binder.h 28d6fc9fcbSMasahiro Yamadaheader-test- += linux/android/binderfs.h 29d6fc9fcbSMasahiro Yamadaheader-test- += linux/coda.h 30d6fc9fcbSMasahiro Yamadaheader-test- += linux/elfcore.h 31d6fc9fcbSMasahiro Yamadaheader-test- += linux/errqueue.h 32d6fc9fcbSMasahiro Yamadaheader-test- += linux/fsmap.h 33d6fc9fcbSMasahiro Yamadaheader-test- += linux/hdlc/ioctl.h 34d6fc9fcbSMasahiro Yamadaheader-test- += linux/ivtv.h 35d6fc9fcbSMasahiro Yamadaheader-test- += linux/kexec.h 36d6fc9fcbSMasahiro Yamadaheader-test- += linux/matroxfb.h 37d6fc9fcbSMasahiro Yamadaheader-test- += linux/nfc.h 38d6fc9fcbSMasahiro Yamadaheader-test- += linux/omap3isp.h 39d6fc9fcbSMasahiro Yamadaheader-test- += linux/omapfb.h 40d6fc9fcbSMasahiro Yamadaheader-test- += linux/patchkey.h 41d6fc9fcbSMasahiro Yamadaheader-test- += linux/phonet.h 42d6fc9fcbSMasahiro Yamadaheader-test- += linux/reiserfs_xattr.h 43d6fc9fcbSMasahiro Yamadaheader-test- += linux/scc.h 44d6fc9fcbSMasahiro Yamadaheader-test- += linux/sctp.h 45d6fc9fcbSMasahiro Yamadaheader-test- += linux/signal.h 46d6fc9fcbSMasahiro Yamadaheader-test- += linux/sysctl.h 47d6fc9fcbSMasahiro Yamadaheader-test- += linux/usb/audio.h 48d6fc9fcbSMasahiro Yamadaheader-test- += linux/v4l2-mediabus.h 49d6fc9fcbSMasahiro Yamadaheader-test- += linux/v4l2-subdev.h 50d6fc9fcbSMasahiro Yamadaheader-test- += linux/videodev2.h 51d6fc9fcbSMasahiro Yamadaheader-test- += linux/vm_sockets.h 52d6fc9fcbSMasahiro Yamadaheader-test- += sound/asequencer.h 53d6fc9fcbSMasahiro Yamadaheader-test- += sound/asoc.h 54d6fc9fcbSMasahiro Yamadaheader-test- += sound/asound.h 55d6fc9fcbSMasahiro Yamadaheader-test- += sound/compress_offload.h 56d6fc9fcbSMasahiro Yamadaheader-test- += sound/emu10k1.h 57d6fc9fcbSMasahiro Yamadaheader-test- += sound/sfnt_info.h 58d6fc9fcbSMasahiro Yamadaheader-test- += xen/evtchn.h 59d6fc9fcbSMasahiro Yamadaheader-test- += xen/gntdev.h 60d6fc9fcbSMasahiro Yamadaheader-test- += xen/privcmd.h 61d6fc9fcbSMasahiro Yamada 62d6fc9fcbSMasahiro Yamada# More headers are broken in some architectures 63d6fc9fcbSMasahiro Yamada 64d6fc9fcbSMasahiro Yamadaifeq ($(SRCARCH),arc) 65d6fc9fcbSMasahiro Yamadaheader-test- += linux/bpf_perf_event.h 66d6fc9fcbSMasahiro Yamadaendif 67d6fc9fcbSMasahiro Yamada 68d6fc9fcbSMasahiro Yamadaifeq ($(SRCARCH),ia64) 69d6fc9fcbSMasahiro Yamadaheader-test- += asm/setup.h 70d6fc9fcbSMasahiro Yamadaheader-test- += asm/sigcontext.h 71d6fc9fcbSMasahiro Yamadaheader-test- += asm/perfmon.h 72d6fc9fcbSMasahiro Yamadaheader-test- += asm/perfmon_default_smpl.h 73d6fc9fcbSMasahiro Yamadaheader-test- += linux/if_bonding.h 74d6fc9fcbSMasahiro Yamadaendif 75d6fc9fcbSMasahiro Yamada 76d6fc9fcbSMasahiro Yamadaifeq ($(SRCARCH),mips) 77d6fc9fcbSMasahiro Yamadaheader-test- += asm/stat.h 78d6fc9fcbSMasahiro Yamadaendif 79d6fc9fcbSMasahiro Yamada 80d6fc9fcbSMasahiro Yamadaifeq ($(SRCARCH),powerpc) 81d6fc9fcbSMasahiro Yamadaheader-test- += asm/stat.h 82d6fc9fcbSMasahiro Yamadaheader-test- += linux/bpf_perf_event.h 83d6fc9fcbSMasahiro Yamadaendif 84d6fc9fcbSMasahiro Yamada 85d6fc9fcbSMasahiro Yamadaifeq ($(SRCARCH),riscv) 86d6fc9fcbSMasahiro Yamadaheader-test- += linux/bpf_perf_event.h 87d6fc9fcbSMasahiro Yamadaendif 88d6fc9fcbSMasahiro Yamada 89d6fc9fcbSMasahiro Yamadaifeq ($(SRCARCH),sparc) 90d6fc9fcbSMasahiro Yamadaheader-test- += asm/stat.h 91d6fc9fcbSMasahiro Yamadaheader-test- += asm/uctx.h 92d6fc9fcbSMasahiro Yamadaheader-test- += asm/fbio.h 93d6fc9fcbSMasahiro Yamadaendif 94d6fc9fcbSMasahiro Yamada 95d6fc9fcbSMasahiro Yamada# asm-generic/*.h is used by asm/*.h, and should not be included directly 96d6fc9fcbSMasahiro Yamadaheader-test- += asm-generic/% 97d6fc9fcbSMasahiro Yamada 98*7ecaf069SMasahiro Yamadaextra-y := $(patsubst $(obj)/%.h,%.hdrtest, $(shell find $(obj) -name '*.h')) 99fcbb8461SMasahiro Yamada 100fcbb8461SMasahiro Yamadaquiet_cmd_hdrtest = HDRTEST $< 101*7ecaf069SMasahiro Yamada cmd_hdrtest = \ 102*7ecaf069SMasahiro Yamada $(CC) $(c_flags) -S -o /dev/null -x c /dev/null \ 103*7ecaf069SMasahiro Yamada $(if $(filter-out $(header-test-), $*.h), -include $<); \ 104*7ecaf069SMasahiro Yamada $(PERL) $(srctree)/scripts/headers_check.pl $(obj) $(SRCARCH) $<; \ 105*7ecaf069SMasahiro Yamada touch $@ 106fcbb8461SMasahiro Yamada 107fcbb8461SMasahiro Yamada$(obj)/%.hdrtest: $(obj)/%.h FORCE 108fcbb8461SMasahiro Yamada $(call if_changed_dep,hdrtest) 109d6fc9fcbSMasahiro Yamada 1101634f2bfSMasahiro Yamadaclean-files += $(filter-out Makefile, $(notdir $(wildcard $(obj)/*))) 111