mirror_zfs/module/Kbuild.in
Coleman Kane e7e0bb3b61 linux: Fix out-of-src builds
The linux kernel modules haven't been building successfully when the
build occurs in a separate directory than the source code, which is a
common build pattern in Linux. Was not able to determine the root cause,
but the %.o targets in subdirectories are no longer being matched by the
pattern targets in the Linux Kbuild system. This change fixes the issue
by dynamically creating the missing ones inside our Kbuild.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Coleman Kane <ckane@colemankane.org>
Closes #17517
2025-08-12 17:22:40 -07:00

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# When integrated in to a monolithic kernel the spl module must appear
# first. This ensures its module initialization function is run before
# any of the other module initialization functions which depend on it.
ZFS_MODULE_CFLAGS += -std=gnu99 -Wno-declaration-after-statement
ZFS_MODULE_CFLAGS += -Wmissing-prototypes
ZFS_MODULE_CFLAGS += @KERNEL_DEBUG_CFLAGS@ @NO_FORMAT_ZERO_LENGTH@
ifneq ($(KBUILD_EXTMOD),)
zfs_include = @abs_top_srcdir@/include
icp_include = @abs_srcdir@/icp/include
zstd_include = @abs_srcdir@/zstd/include
ZFS_MODULE_CFLAGS += -include @abs_top_builddir@/zfs_config.h
ZFS_MODULE_CFLAGS += -I@abs_top_builddir@/include
src = @abs_srcdir@
obj = @abs_builddir@
else
zfs_include = $(srctree)/include/zfs
icp_include = $(src)/icp/include
zstd_include = $(src)/zstd/include
ZFS_MODULE_CFLAGS += -include $(zfs_include)/zfs_config.h
endif
ZFS_MODULE_CFLAGS += -I$(zfs_include)/os/linux/kernel
ZFS_MODULE_CFLAGS += -I$(zfs_include)/os/linux/spl
ZFS_MODULE_CFLAGS += -I$(zfs_include)/os/linux/zfs
ZFS_MODULE_CFLAGS += -I$(zfs_include)
ZFS_MODULE_CPPFLAGS += -D_KERNEL
ZFS_MODULE_CPPFLAGS += @KERNEL_DEBUG_CPPFLAGS@
# KASAN enables -Werror=frame-larger-than=1024, which
# breaks oh so many parts of our build.
ifeq ($(CONFIG_KASAN),y)
ZFS_MODULE_CFLAGS += -Wno-error=frame-larger-than=
endif
# Generated binary search code is particularly bad with this optimization.
# Oddly, range_tree.c is not affected when unrolling is not done and dsl_scan.c
# is not affected when unrolling is done.
# Disable it until the following upstream issue is resolved:
# https://github.com/llvm/llvm-project/issues/62790
ifeq ($(CONFIG_X86),y)
ifeq ($(CONFIG_CC_IS_CLANG),y)
CFLAGS_zfs/dsl_scan.o += -mllvm -x86-cmov-converter=false
CFLAGS_zfs/metaslab.o += -mllvm -x86-cmov-converter=false
CFLAGS_zfs/range_tree.o += -mllvm -x86-cmov-converter=false
CFLAGS_zfs/zap_micro.o += -mllvm -x86-cmov-converter=false
endif
endif
ifneq ($(KBUILD_EXTMOD),)
@CONFIG_QAT_TRUE@ZFS_MODULE_CFLAGS += -I@QAT_SRC@/include
@CONFIG_QAT_TRUE@KBUILD_EXTRA_SYMBOLS += @QAT_SYMBOLS@
endif
asflags-y := $(ZFS_MODULE_CFLAGS) $(ZFS_MODULE_CPPFLAGS)
ccflags-y := $(ZFS_MODULE_CFLAGS) $(ZFS_MODULE_CPPFLAGS)
ifeq ($(CONFIG_ARM64),y)
CFLAGS_REMOVE_zcommon/zfs_fletcher_aarch64_neon.o += -mgeneral-regs-only
CFLAGS_REMOVE_zfs/vdev_raidz_math_aarch64_neon.o += -mgeneral-regs-only
CFLAGS_REMOVE_zfs/vdev_raidz_math_aarch64_neonx2.o += -mgeneral-regs-only
endif
# Suppress unused-value warnings in sparc64 architecture headers
ccflags-$(CONFIG_SPARC64) += -Wno-unused-value
obj-$(CONFIG_ZFS) := spl.o zfs.o
SPL_OBJS := \
spl-atomic.o \
spl-condvar.o \
spl-cred.o \
spl-err.o \
spl-generic.o \
spl-kmem-cache.o \
spl-kmem.o \
spl-kstat.o \
spl-proc.o \
spl-procfs-list.o \
spl-shrinker.o \
spl-taskq.o \
spl-thread.o \
spl-trace.o \
spl-tsd.o \
spl-vmem.o \
spl-xdr.o \
spl-zlib.o \
spl-zone.o
spl-objs += $(addprefix os/linux/spl/,$(SPL_OBJS))
zfs-objs += avl/avl.o
ICP_OBJS := \
algs/aes/aes_impl.o \
algs/aes/aes_impl_generic.o \
algs/aes/aes_modes.o \
algs/blake3/blake3.o \
algs/blake3/blake3_generic.o \
algs/blake3/blake3_impl.o \
algs/edonr/edonr.o \
algs/modes/ccm.o \
algs/modes/gcm.o \
algs/modes/gcm_generic.o \
algs/modes/modes.o \
algs/sha2/sha2_generic.o \
algs/sha2/sha256_impl.o \
algs/sha2/sha512_impl.o \
algs/skein/skein.o \
algs/skein/skein_block.o \
algs/skein/skein_iv.o \
api/kcf_cipher.o \
api/kcf_ctxops.o \
api/kcf_mac.o \
core/kcf_callprov.o \
core/kcf_mech_tabs.o \
core/kcf_prov_lib.o \
core/kcf_prov_tabs.o \
core/kcf_sched.o \
illumos-crypto.o \
io/aes.o \
io/sha2_mod.o \
spi/kcf_spi.o
ICP_OBJS_X86_64 := \
asm-x86_64/aes/aes_aesni.o \
asm-x86_64/aes/aes_amd64.o \
asm-x86_64/aes/aeskey.o \
asm-x86_64/blake3/blake3_avx2.o \
asm-x86_64/blake3/blake3_avx512.o \
asm-x86_64/blake3/blake3_sse2.o \
asm-x86_64/blake3/blake3_sse41.o \
asm-x86_64/sha2/sha256-x86_64.o \
asm-x86_64/sha2/sha512-x86_64.o \
asm-x86_64/modes/aesni-gcm-x86_64.o \
asm-x86_64/modes/gcm_pclmulqdq.o \
asm-x86_64/modes/ghash-x86_64.o
ICP_OBJS_X86 := \
algs/aes/aes_impl_aesni.o \
algs/aes/aes_impl_x86-64.o \
algs/modes/gcm_pclmulqdq.o
ICP_OBJS_ARM := \
asm-arm/sha2/sha256-armv7.o \
asm-arm/sha2/sha512-armv7.o
ICP_OBJS_ARM64 := \
asm-aarch64/blake3/b3_aarch64_sse2.o \
asm-aarch64/blake3/b3_aarch64_sse41.o \
asm-aarch64/sha2/sha256-armv8.o \
asm-aarch64/sha2/sha512-armv8.o
ICP_OBJS_PPC_PPC64 := \
asm-ppc64/blake3/b3_ppc64le_sse2.o \
asm-ppc64/blake3/b3_ppc64le_sse41.o \
asm-ppc64/sha2/sha256-p8.o \
asm-ppc64/sha2/sha512-p8.o \
asm-ppc64/sha2/sha256-ppc.o \
asm-ppc64/sha2/sha512-ppc.o
zfs-objs += $(addprefix icp/,$(ICP_OBJS))
zfs-$(CONFIG_X86) += $(addprefix icp/,$(ICP_OBJS_X86))
zfs-$(CONFIG_UML_X86)+= $(addprefix icp/,$(ICP_OBJS_X86))
zfs-$(CONFIG_X86_64) += $(addprefix icp/,$(ICP_OBJS_X86_64))
zfs-$(CONFIG_ARM) += $(addprefix icp/,$(ICP_OBJS_ARM))
zfs-$(CONFIG_ARM64) += $(addprefix icp/,$(ICP_OBJS_ARM64))
zfs-$(CONFIG_PPC) += $(addprefix icp/,$(ICP_OBJS_PPC_PPC64))
zfs-$(CONFIG_PPC64) += $(addprefix icp/,$(ICP_OBJS_PPC_PPC64))
$(addprefix $(obj)/icp/,$(ICP_OBJS) $(ICP_OBJS_X86) $(ICP_OBJS_X86_64) \
$(ICP_OBJS_ARM64) $(ICP_OBJS_PPC_PPC64)) : asflags-y += -I$(icp_include) -I$(zfs_include)/os/linux/spl -I$(zfs_include)
$(addprefix $(obj)/icp/,$(ICP_OBJS) $(ICP_OBJS_X86) $(ICP_OBJS_X86_64) \
$(ICP_OBJS_ARM64) $(ICP_OBJS_PPC_PPC64)) : ccflags-y += -I$(icp_include) -I$(zfs_include)/os/linux/spl -I$(zfs_include)
LUA_OBJS := \
lapi.o \
lauxlib.o \
lbaselib.o \
lcode.o \
lcompat.o \
lcorolib.o \
lctype.o \
ldebug.o \
ldo.o \
lfunc.o \
lgc.o \
llex.o \
lmem.o \
lobject.o \
lopcodes.o \
lparser.o \
lstate.o \
lstring.o \
lstrlib.o \
ltable.o \
ltablib.o \
ltm.o \
lvm.o \
lzio.o \
setjmp/setjmp.o
zfs-objs += $(addprefix lua/,$(LUA_OBJS))
NVPAIR_OBJS := \
fnvpair.o \
nvpair.o \
nvpair_alloc_fixed.o \
nvpair_alloc_spl.o
zfs-objs += $(addprefix nvpair/,$(NVPAIR_OBJS))
UNICODE_OBJS := \
u8_textprep.o \
uconv.o
zfs-objs += $(addprefix unicode/,$(UNICODE_OBJS))
ZCOMMON_OBJS := \
cityhash.o \
simd_stat.o \
zfeature_common.o \
zfs_comutil.o \
zfs_deleg.o \
zfs_fletcher.o \
zfs_fletcher_superscalar.o \
zfs_fletcher_superscalar4.o \
zfs_namecheck.o \
zfs_prop.o \
zfs_valstr.o \
zpool_prop.o \
zprop_common.o
ZCOMMON_OBJS_X86 := \
zfs_fletcher_avx512.o \
zfs_fletcher_intel.o \
zfs_fletcher_sse.o
ZCOMMON_OBJS_ARM64 := \
zfs_fletcher_aarch64_neon.o
zfs-objs += $(addprefix zcommon/,$(ZCOMMON_OBJS))
zfs-$(CONFIG_X86) += $(addprefix zcommon/,$(ZCOMMON_OBJS_X86))
zfs-$(CONFIG_UML_X86)+= $(addprefix zcommon/,$(ZCOMMON_OBJS_X86))
zfs-$(CONFIG_ARM64) += $(addprefix zcommon/,$(ZCOMMON_OBJS_ARM64))
# Zstd uses -O3 by default, so we should follow
ZFS_ZSTD_FLAGS := -O3
# -fno-tree-vectorize gets set for gcc in zstd/common/compiler.h
# Set it for other compilers, too.
ZFS_ZSTD_FLAGS += -fno-tree-vectorize
# SSE register return with SSE disabled if -march=znverX is passed
ZFS_ZSTD_FLAGS += -U__BMI__
# Quiet warnings about frame size due to unused code in unmodified zstd lib
ZFS_ZSTD_FLAGS += -Wframe-larger-than=20480
ZSTD_OBJS := \
zfs_zstd.o \
zstd_sparc.o
ZSTD_UPSTREAM_OBJS := \
lib/common/entropy_common.o \
lib/common/error_private.o \
lib/common/fse_decompress.o \
lib/common/pool.o \
lib/common/zstd_common.o \
lib/compress/fse_compress.o \
lib/compress/hist.o \
lib/compress/huf_compress.o \
lib/compress/zstd_compress.o \
lib/compress/zstd_compress_literals.o \
lib/compress/zstd_compress_sequences.o \
lib/compress/zstd_compress_superblock.o \
lib/compress/zstd_double_fast.o \
lib/compress/zstd_fast.o \
lib/compress/zstd_lazy.o \
lib/compress/zstd_ldm.o \
lib/compress/zstd_opt.o \
lib/decompress/huf_decompress.o \
lib/decompress/zstd_ddict.o \
lib/decompress/zstd_decompress.o \
lib/decompress/zstd_decompress_block.o
zfs-objs += $(addprefix zstd/,$(ZSTD_OBJS) $(ZSTD_UPSTREAM_OBJS))
# Disable aarch64 neon SIMD instructions for kernel mode
$(addprefix $(obj)/zstd/,$(ZSTD_OBJS) $(ZSTD_UPSTREAM_OBJS)) : ccflags-y += -I$(zstd_include) $(ZFS_ZSTD_FLAGS)
$(addprefix $(obj)/zstd/,$(ZSTD_OBJS) $(ZSTD_UPSTREAM_OBJS)) : asflags-y += -I$(zstd_include)
$(addprefix $(obj)/zstd/,$(ZSTD_UPSTREAM_OBJS)) : ccflags-y += -include $(zstd_include)/aarch64_compat.h -include $(zstd_include)/zstd_compat_wrapper.h -Wp,-w
$(obj)/zstd/zfs_zstd.o : ccflags-y += -include $(zstd_include)/zstd_compat_wrapper.h
ZFS_OBJS := \
abd.o \
aggsum.o \
arc.o \
blake3_zfs.o \
blkptr.o \
bplist.o \
bpobj.o \
bptree.o \
bqueue.o \
brt.o \
btree.o \
dataset_kstats.o \
dbuf.o \
dbuf_stats.o \
ddt.o \
ddt_log.o \
ddt_stats.o \
ddt_zap.o \
dmu.o \
dmu_direct.o \
dmu_diff.o \
dmu_object.o \
dmu_objset.o \
dmu_recv.o \
dmu_redact.o \
dmu_send.o \
dmu_traverse.o \
dmu_tx.o \
dmu_zfetch.o \
dnode.o \
dnode_sync.o \
dsl_bookmark.o \
dsl_crypt.o \
dsl_dataset.o \
dsl_deadlist.o \
dsl_deleg.o \
dsl_destroy.o \
dsl_dir.o \
dsl_pool.o \
dsl_prop.o \
dsl_scan.o \
dsl_synctask.o \
dsl_userhold.o \
edonr_zfs.o \
fm.o \
gzip.o \
hkdf.o \
lz4.o \
lz4_zfs.o \
lzjb.o \
metaslab.o \
mmp.o \
multilist.o \
objlist.o \
pathname.o \
range_tree.o \
refcount.o \
rrwlock.o \
sa.o \
sha2_zfs.o \
skein_zfs.o \
spa.o \
spa_checkpoint.o \
spa_config.o \
spa_errlog.o \
spa_history.o \
spa_log_spacemap.o \
spa_misc.o \
spa_stats.o \
space_map.o \
space_reftree.o \
txg.o \
uberblock.o \
unique.o \
vdev.o \
vdev_draid.o \
vdev_draid_rand.o \
vdev_file.o \
vdev_indirect.o \
vdev_indirect_births.o \
vdev_indirect_mapping.o \
vdev_initialize.o \
vdev_label.o \
vdev_mirror.o \
vdev_missing.o \
vdev_queue.o \
vdev_raidz.o \
vdev_raidz_math.o \
vdev_raidz_math_scalar.o \
vdev_rebuild.o \
vdev_removal.o \
vdev_root.o \
vdev_trim.o \
zap.o \
zap_leaf.o \
zap_micro.o \
zcp.o \
zcp_get.o \
zcp_global.o \
zcp_iter.o \
zcp_set.o \
zcp_synctask.o \
zfeature.o \
zfs_byteswap.o \
zfs_chksum.o \
zfs_fm.o \
zfs_fuid.o \
zfs_impl.o \
zfs_ioctl.o \
zfs_log.o \
zfs_onexit.o \
zfs_quota.o \
zfs_ratelimit.o \
zfs_replay.o \
zfs_rlock.o \
zfs_sa.o \
zfs_vnops.o \
zfs_znode.o \
zil.o \
zio.o \
zio_checksum.o \
zio_compress.o \
zio_inject.o \
zle.o \
zrlock.o \
zthr.o \
zvol.o
ZFS_OBJS_OS := \
abd_os.o \
arc_os.o \
mmp_os.o \
policy.o \
qat.o \
qat_compress.o \
qat_crypt.o \
spa_misc_os.o \
trace.o \
vdev_disk.o \
vdev_raidz.o \
vdev_label_os.o \
zfs_acl.o \
zfs_ctldir.o \
zfs_debug.o \
zfs_dir.o \
zfs_file_os.o \
zfs_ioctl_os.o \
zfs_racct.o \
zfs_sysfs.o \
zfs_uio.o \
zfs_vfsops.o \
zfs_vnops_os.o \
zfs_znode_os.o \
zio_crypt.o \
zpl_ctldir.o \
zpl_export.o \
zpl_file.o \
zpl_file_range.o \
zpl_inode.o \
zpl_super.o \
zpl_xattr.o \
zvol_os.o
ZFS_OBJS_X86 := \
vdev_raidz_math_avx2.o \
vdev_raidz_math_avx512bw.o \
vdev_raidz_math_avx512f.o \
vdev_raidz_math_sse2.o \
vdev_raidz_math_ssse3.o
ZFS_OBJS_ARM64 := \
vdev_raidz_math_aarch64_neon.o \
vdev_raidz_math_aarch64_neonx2.o
ZFS_OBJS_PPC_PPC64 := \
vdev_raidz_math_powerpc_altivec.o
zfs-objs += $(addprefix zfs/,$(ZFS_OBJS)) $(addprefix os/linux/zfs/,$(ZFS_OBJS_OS))
zfs-$(CONFIG_X86) += $(addprefix zfs/,$(ZFS_OBJS_X86))
zfs-$(CONFIG_UML_X86)+= $(addprefix zfs/,$(ZFS_OBJS_X86))
zfs-$(CONFIG_ARM64) += $(addprefix zfs/,$(ZFS_OBJS_ARM64))
zfs-$(CONFIG_PPC) += $(addprefix zfs/,$(ZFS_OBJS_PPC_PPC64))
zfs-$(CONFIG_PPC64) += $(addprefix zfs/,$(ZFS_OBJS_PPC_PPC64))
UBSAN_SANITIZE_zap_leaf.o := n
UBSAN_SANITIZE_zap_micro.o := n
UBSAN_SANITIZE_sa.o := n
UBSAN_SANITIZE_zfs/zap_micro.o := n
UBSAN_SANITIZE_zfs/sa.o := n
ifeq ($(CONFIG_ALTIVEC),y)
$(obj)/zfs/vdev_raidz_math_powerpc_altivec.o : c_flags += -maltivec
endif
# The following recipes attempt to fix out of src-tree builds, where $(src) != $(obj), so that the
# subdir %.c/%.S -> %.o targets will work as expected. The in-kernel pattern targets do not seem to
# be working on subdirs since about ~6.10
zobjdirs = $(dir $(zfs-objs)) $(dir $(spl-objs)) \
$(dir $(zfs-$(CONFIG_X86))) $(dir $(zfs-$(CONFIG_UML_X86))) $(dir $(zfs-$(CONFIG_ARM64))) \
$(dir $(zfs-$(CONFIG_PPC64))) $(dir $(zfs-$(CONFIG_PPC)))
z_cdirs = $(sort $(filter-out lua/setjmp/ $(addprefix icp/asm-aarch64/, aes/ blake3/ modes/ sha2/) \
$(addprefix icp/asm-x86_64/, aes/ blake3/ modes/ sha2/) \
$(addprefix icp/asm-ppc/, aes/ blake3/ modes/ sha2/) \
$(addprefix icp/asm-ppc64/, aes/ blake3/ modes/ sha2/), $(zobjdirs)))
z_sdirs = $(sort $(filter lua/setjmp/ $(addprefix icp/asm-aarch64/, aes/ blake3/ modes/ sha2/) \
$(addprefix icp/asm-x86_64/, aes/ blake3/ modes/ sha2/) \
$(addprefix icp/asm-ppc/, aes/ blake3/ modes/ sha2/) \
$(addprefix icp/asm-ppc64/, aes/ blake3/ modes/ sha2/), $(zobjdirs)))
define ZKMOD_C_O_MAKE_TARGET
$1%.o: $(src)/$1%.c FORCE
$$(call if_changed_rule,cc_o_c)
$$(call cmd,force_checksrc)
endef
define ZKMOD_S_O_MAKE_TARGET
$1%.o: $(src)/$1%.S FORCE
$$(call if_changed_rule,as_o_S)
$$(call cmd,force_checksrc)
endef
$(foreach target,$(z_cdirs), $(eval $(call ZKMOD_C_O_MAKE_TARGET,$(target))))
$(foreach target,$(z_sdirs), $(eval $(call ZKMOD_S_O_MAKE_TARGET,$(target))))