mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 16:57:47 +07:00
9371f86ecb
bpfilter_umh is built for the default machine bit of the compiler, which may not match to the bit size of the kernel. This happens in the scenario below: You can use biarch GCC that defaults to 64-bit for building the 32-bit kernel. In this case, Kbuild passes -m32 to teach the compiler to produce 32-bit kernel space objects. However, it is missing when building bpfilter_umh. It is built as a 64-bit ELF, and then embedded into the 32-bit kernel. The 32-bit kernel and 64-bit umh is a bad combination. In theory, we can have 32-bit umh running on 64-bit kernel, but we do not have a good reason to support such a usecase. The best is to match the bit size between them. Pass -m32 or -m64 to the umh build command if it is found in $(KBUILD_CFLAGS). Evaluate CC_CAN_LINK against the kernel bit-size. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
112 lines
3.5 KiB
Makefile
112 lines
3.5 KiB
Makefile
# 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$(objtree)/usr/include
|
|
|
|
# The following are excluded for now because they fail to build.
|
|
#
|
|
# Do not add a new header to the blacklist without legitimate reason.
|
|
# Please consider to fix the header first.
|
|
#
|
|
# Sorted alphabetically.
|
|
no-header-test += asm/shmbuf.h
|
|
no-header-test += asm/signal.h
|
|
no-header-test += asm/ucontext.h
|
|
no-header-test += drm/vmwgfx_drm.h
|
|
no-header-test += linux/am437x-vpfe.h
|
|
no-header-test += linux/android/binder.h
|
|
no-header-test += linux/android/binderfs.h
|
|
no-header-test += linux/coda.h
|
|
no-header-test += linux/elfcore.h
|
|
no-header-test += linux/errqueue.h
|
|
no-header-test += linux/fsmap.h
|
|
no-header-test += linux/hdlc/ioctl.h
|
|
no-header-test += linux/ivtv.h
|
|
no-header-test += linux/kexec.h
|
|
no-header-test += linux/matroxfb.h
|
|
no-header-test += linux/nfc.h
|
|
no-header-test += linux/omap3isp.h
|
|
no-header-test += linux/omapfb.h
|
|
no-header-test += linux/patchkey.h
|
|
no-header-test += linux/phonet.h
|
|
no-header-test += linux/reiserfs_xattr.h
|
|
no-header-test += linux/sctp.h
|
|
no-header-test += linux/signal.h
|
|
no-header-test += linux/sysctl.h
|
|
no-header-test += linux/usb/audio.h
|
|
no-header-test += linux/v4l2-mediabus.h
|
|
no-header-test += linux/v4l2-subdev.h
|
|
no-header-test += linux/videodev2.h
|
|
no-header-test += linux/vm_sockets.h
|
|
no-header-test += sound/asequencer.h
|
|
no-header-test += sound/asoc.h
|
|
no-header-test += sound/asound.h
|
|
no-header-test += sound/compress_offload.h
|
|
no-header-test += sound/emu10k1.h
|
|
no-header-test += sound/sfnt_info.h
|
|
no-header-test += xen/evtchn.h
|
|
no-header-test += xen/gntdev.h
|
|
no-header-test += xen/privcmd.h
|
|
|
|
# More headers are broken in some architectures
|
|
|
|
ifeq ($(SRCARCH),arc)
|
|
no-header-test += linux/bpf_perf_event.h
|
|
endif
|
|
|
|
ifeq ($(SRCARCH),ia64)
|
|
no-header-test += asm/setup.h
|
|
no-header-test += asm/sigcontext.h
|
|
no-header-test += asm/perfmon.h
|
|
no-header-test += asm/perfmon_default_smpl.h
|
|
no-header-test += linux/if_bonding.h
|
|
endif
|
|
|
|
ifeq ($(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)/*)))
|