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108 lines
3.4 KiB
108 lines
3.4 KiB
# SPDX-License-Identifier: GPL-2.0-only |
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# Unlike the kernel space, exported headers are written in standard C. |
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# - Forbid C++ style comments |
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# - Use '__inline__', '__asm__' instead of 'inline', 'asm' |
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# |
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# -std=c90 (equivalent to -ansi) catches the violation of those. |
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# We cannot go as far as adding -Wpedantic since it emits too many warnings. |
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UAPI_CFLAGS := -std=c90 -Wall -Werror=implicit-function-declaration |
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# In theory, we do not care -m32 or -m64 for header compile tests. |
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# It is here just because CONFIG_CC_CAN_LINK is tested with -m32 or -m64. |
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UAPI_CFLAGS += $(filter -m32 -m64, $(KBUILD_CFLAGS)) |
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override c_flags = $(UAPI_CFLAGS) -Wp,-MMD,$(depfile) -I$(objtree)/usr/include |
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# The following are excluded for now because they fail to build. |
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# |
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# Do not add a new header to the blacklist without legitimate reason. |
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# Please consider to fix the header first. |
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# |
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# Sorted alphabetically. |
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no-header-test += asm/shmbuf.h |
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no-header-test += asm/signal.h |
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no-header-test += asm/ucontext.h |
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no-header-test += drm/vmwgfx_drm.h |
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no-header-test += linux/am437x-vpfe.h |
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no-header-test += linux/android/binder.h |
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no-header-test += linux/android/binderfs.h |
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no-header-test += linux/coda.h |
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no-header-test += linux/errqueue.h |
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no-header-test += linux/fsmap.h |
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no-header-test += linux/hdlc/ioctl.h |
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no-header-test += linux/ivtv.h |
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no-header-test += linux/kexec.h |
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no-header-test += linux/matroxfb.h |
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no-header-test += linux/nfc.h |
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no-header-test += linux/omap3isp.h |
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no-header-test += linux/omapfb.h |
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no-header-test += linux/patchkey.h |
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no-header-test += linux/phonet.h |
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no-header-test += linux/reiserfs_xattr.h |
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no-header-test += linux/sctp.h |
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no-header-test += linux/signal.h |
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no-header-test += linux/sysctl.h |
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no-header-test += linux/usb/audio.h |
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no-header-test += linux/v4l2-mediabus.h |
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no-header-test += linux/v4l2-subdev.h |
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no-header-test += linux/videodev2.h |
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no-header-test += linux/vm_sockets.h |
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no-header-test += sound/asequencer.h |
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no-header-test += sound/asoc.h |
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no-header-test += sound/asound.h |
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no-header-test += sound/compress_offload.h |
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no-header-test += sound/emu10k1.h |
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no-header-test += sound/sfnt_info.h |
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no-header-test += xen/evtchn.h |
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no-header-test += xen/gntdev.h |
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no-header-test += xen/privcmd.h |
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# More headers are broken in some architectures |
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ifeq ($(SRCARCH),arc) |
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no-header-test += linux/bpf_perf_event.h |
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endif |
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ifeq ($(SRCARCH),ia64) |
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no-header-test += asm/setup.h |
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no-header-test += asm/sigcontext.h |
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no-header-test += linux/if_bonding.h |
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endif |
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ifeq ($(SRCARCH),mips) |
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no-header-test += asm/stat.h |
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endif |
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ifeq ($(SRCARCH),powerpc) |
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no-header-test += asm/stat.h |
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no-header-test += linux/bpf_perf_event.h |
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endif |
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ifeq ($(SRCARCH),riscv) |
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no-header-test += linux/bpf_perf_event.h |
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endif |
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ifeq ($(SRCARCH),sparc) |
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no-header-test += asm/stat.h |
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no-header-test += asm/uctx.h |
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no-header-test += asm/fbio.h |
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endif |
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# asm-generic/*.h is used by asm/*.h, and should not be included directly |
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no-header-test += asm-generic/% |
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extra-y := $(patsubst $(obj)/%.h,%.hdrtest, $(shell find $(obj) -name '*.h' 2>/dev/null)) |
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# Include the header twice to detect missing include guard. |
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quiet_cmd_hdrtest = HDRTEST $< |
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cmd_hdrtest = \ |
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$(CC) $(c_flags) -S -o /dev/null -x c /dev/null \ |
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$(if $(filter-out $(no-header-test), $*.h), -include $< -include $<); \ |
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$(PERL) $(srctree)/scripts/headers_check.pl $(obj) $(SRCARCH) $<; \ |
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touch $@ |
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$(obj)/%.hdrtest: $(obj)/%.h FORCE |
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$(call if_changed_dep,hdrtest) |
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clean-files += $(filter-out Makefile, $(notdir $(wildcard $(obj)/*)))
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