projects/linux·blob v5.7 · refs

107 lines · 3.3 KiB

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