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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | # SPDX-License-Identifier: GPL-2.0-only # Unlike the kernel space, exported headers are written in standard C. # - Forbid C++ style comments # - Use '__inline__', '__asm__' instead of 'inline', 'asm' # # -std=c90 (equivalent to -ansi) catches the violation of those. # We cannot go as far as adding -Wpedantic since it emits too many warnings. UAPI_CFLAGS := -std=c90 -Wall -Werror=implicit-function-declaration # In theory, we do not care -m32 or -m64 for header compile tests. # It is here just because CONFIG_CC_CAN_LINK is tested with -m32 or -m64. UAPI_CFLAGS += $(filter -m32 -m64, $(KBUILD_CFLAGS)) override c_flags = $(UAPI_CFLAGS) -Wp,-MMD,$(depfile) -I$(objtree)/usr/include # The following are excluded for now because they fail to build. # # Do not add a new header to the blacklist without legitimate reason. # Please consider to fix the header first. # # Sorted alphabetically. no-header-test += asm/shmbuf.h no-header-test += asm/signal.h no-header-test += asm/ucontext.h no-header-test += drm/vmwgfx_drm.h no-header-test += linux/am437x-vpfe.h no-header-test += linux/android/binder.h no-header-test += linux/android/binderfs.h no-header-test += linux/coda.h no-header-test += linux/errqueue.h no-header-test += linux/fsmap.h no-header-test += linux/hdlc/ioctl.h no-header-test += linux/ivtv.h no-header-test += linux/kexec.h no-header-test += linux/matroxfb.h no-header-test += linux/nfc.h no-header-test += linux/omap3isp.h no-header-test += linux/omapfb.h no-header-test += linux/patchkey.h no-header-test += linux/phonet.h no-header-test += linux/reiserfs_xattr.h no-header-test += linux/sctp.h no-header-test += linux/signal.h no-header-test += linux/sysctl.h no-header-test += linux/usb/audio.h no-header-test += linux/v4l2-mediabus.h no-header-test += linux/v4l2-subdev.h no-header-test += linux/videodev2.h no-header-test += linux/vm_sockets.h no-header-test += sound/asequencer.h no-header-test += sound/asoc.h no-header-test += sound/asound.h no-header-test += sound/compress_offload.h no-header-test += sound/emu10k1.h no-header-test += sound/sfnt_info.h no-header-test += xen/evtchn.h no-header-test += xen/gntdev.h no-header-test += xen/privcmd.h # More headers are broken in some architectures ifeq ($(SRCARCH),arc) no-header-test += linux/bpf_perf_event.h endif ifeq ($(SRCARCH),ia64) no-header-test += asm/setup.h no-header-test += asm/sigcontext.h no-header-test += linux/if_bonding.h endif ifeq ($(SRCARCH),mips) no-header-test += asm/stat.h endif ifeq ($(SRCARCH),powerpc) no-header-test += asm/stat.h no-header-test += linux/bpf_perf_event.h endif ifeq ($(SRCARCH),riscv) no-header-test += linux/bpf_perf_event.h endif ifeq ($(SRCARCH),sparc) no-header-test += asm/stat.h no-header-test += asm/uctx.h no-header-test += asm/fbio.h endif # asm-generic/*.h is used by asm/*.h, and should not be included directly no-header-test += asm-generic/% extra-y := $(patsubst $(obj)/%.h,%.hdrtest, $(shell find $(obj) -name '*.h' 2>/dev/null)) # Include the header twice to detect missing include guard. quiet_cmd_hdrtest = HDRTEST $< cmd_hdrtest = \ $(CC) $(c_flags) -S -o /dev/null -x c /dev/null \ $(if $(filter-out $(no-header-test), $*.h), -include $< -include $<); \ $(PERL) $(srctree)/scripts/headers_check.pl $(obj) $(SRCARCH) $<; \ touch $@ $(obj)/%.hdrtest: $(obj)/%.h FORCE $(call if_changed_dep,hdrtest) clean-files += $(filter-out Makefile, $(notdir $(wildcard $(obj)/*))) |