mirror_zfs/module/Makefile.in
Attila Fülöp 6cf17f6538
Linux build: handle CONFIG_OBJTOOL_WERROR=y
Linux 5.16 by default fails the build on objtool warnings. We have
known and understood objtool warnings we can't fix without
involving Linux maintainers.

To work around this we introduce an objtool wrapper script which
removes the `--Werror` flag.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Attila Fülöp <attila@fueloep.org>
Closes #17456
2025-06-16 08:12:09 -07:00

176 lines
5.8 KiB
Makefile

include Kbuild
INSTALL_MOD_DIR ?= extra
INSTALL_MOD_PATH ?= $(DESTDIR)
all: modules
distclean maintainer-clean: clean
install: modules_install data_install
uninstall: modules_uninstall data_uninstall
check:
.PHONY: all distclean maintainer-clean install uninstall check distdir \
modules modules-Linux modules-FreeBSD modules-unknown \
clean clean-Linux clean-FreeBSD \
modules_install modules_install-Linux modules_install-FreeBSD \
data_install data_install-Linux data_install-FreeBSD \
modules_uninstall modules_uninstall-Linux modules_uninstall-FreeBSD \
data_uninstall data_uninstall-Linux data_uninstall-FreeBSD \
cppcheck cppcheck-Linux cppcheck-FreeBSD
# For FreeBSD, use debug options from ./configure if not overridden.
export WITH_DEBUG ?= @WITH_DEBUG@
export WITH_INVARIANTS ?= @WITH_INVARIANTS@
# Filter out options that FreeBSD make doesn't understand
getflags = ( \
set -- \
$(filter-out --%,$(firstword $(MFLAGS))) \
$(filter -I%,$(MFLAGS)) \
$(filter -j%,$(MFLAGS)); \
fmakeflags=""; \
while getopts :deiI:j:knqrstw flag; do \
case $$flag in \
\?) :;; \
:) if [ $$OPTARG = "j" ]; then \
ncpus=$$(sysctl -n kern.smp.cpus 2>/dev/null || :); \
if [ -n "$$ncpus" ]; then fmakeflags="$$fmakeflags -j$$ncpus"; fi; \
fi;; \
d) fmakeflags="$$fmakeflags -dA";; \
*) fmakeflags="$$fmakeflags -$$flag$$OPTARG";; \
esac; \
done; \
echo $$fmakeflags \
)
FMAKEFLAGS = -C @abs_srcdir@ -f Makefile.bsd $(shell $(getflags))
ifneq (@abs_srcdir@,@abs_builddir@)
FMAKEFLAGS += MAKEOBJDIR=@abs_builddir@
endif
FMAKE = env -u MAKEFLAGS make $(FMAKEFLAGS)
modules-Linux:
mkdir -p $(sort $(dir $(spl-objs) $(spl-)))
mkdir -p $(sort $(dir $(zfs-objs) $(zfs-)))
$(MAKE) -C @LINUX_OBJ@ $(if @KERNEL_CC@,CC=@KERNEL_CC@) \
$(if @KERNEL_LD@,LD=@KERNEL_LD@) $(if @KERNEL_LLVM@,LLVM=@KERNEL_LLVM@) \
$(if @KERNEL_CROSS_COMPILE@,CROSS_COMPILE=@KERNEL_CROSS_COMPILE@) \
$(if @KERNEL_ARCH@,ARCH=@KERNEL_ARCH@) \
$(if @OBJTOOL_DISABLE_WERROR@,objtool=@top_builddir@/scripts/objtool-wrapper) \
M="$$PWD" @KERNEL_MAKE@ CONFIG_ZFS=m modules
modules-FreeBSD:
+$(FMAKE)
modules-unknown:
@true
modules: modules-@ac_system@
clean-Linux:
@# Only cleanup the kernel build directories when CONFIG_KERNEL
@# is defined. This indicates that kernel modules should be built.
@CONFIG_KERNEL_TRUE@ $(MAKE) -C @LINUX_OBJ@ M="$$PWD" @KERNEL_MAKE@ clean
$(RM) @LINUX_SYMBOLS@ Module.markers
find . -name '*.ur-safe' -type f -delete
clean-FreeBSD:
+$(FMAKE) clean
clean: clean-@ac_system@
.PHONY: modules_uninstall-Linux-legacy
modules_uninstall-Linux-legacy:
$(RM) -r $(addprefix $(KMODDIR)/$(INSTALL_MOD_DIR)/,spl/ avl/ icp/ lua/ nvpair/ unicode/ zcommon/ zfs/ zstd/)
KMODDIR := $(INSTALL_MOD_PATH)/lib/modules/@LINUX_VERSION@
modules_install-Linux: modules_uninstall-Linux-legacy
@# Install the kernel modules
$(MAKE) -C @LINUX_OBJ@ M="$$PWD" modules_install \
INSTALL_MOD_PATH=$(INSTALL_MOD_PATH) \
INSTALL_MOD_DIR=$(INSTALL_MOD_DIR) \
$(if @KERNEL_ARCH@,ARCH=@KERNEL_ARCH@) \
KERNELRELEASE=@LINUX_VERSION@
@# Remove extraneous build products when packaging
if [ -n "$(DESTDIR)" ] && [ "$(DONT_DELETE_MODULES_FILES)" != "1" ]; then \
find $(KMODDIR) -name 'modules.*' -delete; \
fi
@# Debian ships tiny fake System.map files that are
@# syntactically valid but just say
@# "if you want system.map go install this package"
@# Naturally, depmod is less than amused by this.
@# So if we find it missing or with one of these present,
@# we check for the alternate path for the System.map
sysmap=$(INSTALL_MOD_PATH)/boot/System.map-@LINUX_VERSION@; \
{ [ -f "$$sysmap" ] && [ $$(wc -l < "$$sysmap") -ge 100 ]; } || \
sysmap=$(INSTALL_MOD_PATH)/usr/lib/debug/boot/System.map-@LINUX_VERSION@; \
if [ -f $$sysmap ]; then \
depmod -ae -F $$sysmap @LINUX_VERSION@ -b $(INSTALL_MOD_PATH)/; \
fi
modules_install-FreeBSD:
@# Install the kernel modules
+$(FMAKE) install
modules_install: modules_install-@ac_system@
data_install-Linux:
@mkdir -p $(DESTDIR)/@prefix@/src/zfs-@VERSION@/@LINUX_VERSION@
cp ../zfs.release ../zfs_config.h @LINUX_SYMBOLS@ $(DESTDIR)/@prefix@/src/zfs-@VERSION@/@LINUX_VERSION@
data_install-FreeBSD:
@
data_install: data_install-@ac_system@
modules_uninstall-Linux: modules_uninstall-Linux-legacy
@# Uninstall the kernel modules
$(RM) $(addprefix $(KMODDIR)/$(INSTALL_MOD_DIR)/,zfs.ko spl.ko)
modules_uninstall-FreeBSD:
@false
modules_uninstall: modules_uninstall-@ac_system@
data_uninstall-Linux:
$(RM) $(addprefix $(DESTDIR)/@prefix@/src/zfs-@VERSION@/@LINUX_VERSION@/,zfs.release zfs_config.h @LINUX_SYMBOLS@)
data_uninstall-FreeBSD:
@
data_uninstall: data_uninstall-@ac_system@
cppcheck-Linux:
@CPPCHECK@ -j@CPU_COUNT@ --std=c99 --quiet --force --error-exitcode=2 \
--inline-suppr \
--suppress=unmatchedSuppression \
--suppress=noValidConfiguration \
--enable=warning,information -D_KERNEL \
--include=@LINUX_OBJ@/include/generated/autoconf.h \
--include=@top_builddir@/zfs_config.h \
--config-exclude=@LINUX_OBJ@/include \
-i zstd/lib \
-I @LINUX_OBJ@/include \
-I @top_srcdir@/include/os/linux/kernel \
-I @top_srcdir@/include/os/linux/spl \
-I @top_srcdir@/include/os/linux/zfs \
-I @top_srcdir@/include \
avl icp lua nvpair unicode zcommon zfs zstd os/linux
cppcheck-FreeBSD:
@true
cppcheck: cppcheck-@ac_system@
distdir:
cd @srcdir@ && find . -name '*.[chS]' -exec sh -c 'for f; do mkdir -p $$distdir/$${f%/*}; cp @srcdir@/$$f $$distdir/$$f; done' _ {} +
cp @srcdir@/Makefile.bsd $$distdir/Makefile.bsd
gen-zstd-symbols:
for obj in $(addprefix zstd/,$(ZSTD_UPSTREAM_OBJS)); do echo; echo "/* $${obj#zstd/}: */"; @OBJDUMP@ -t $$obj | awk '$$2 == "g" && !/ zfs_/ {print "#define\t" $$6 " zfs_" $$6}' | sort; done >> zstd/include/zstd_compat_wrapper.h
check-zstd-symbols:
@OBJDUMP@ -t $(addprefix zstd/,$(ZSTD_UPSTREAM_OBJS)) | awk '/file format/ {print} $$2 == "g" && (!/ zfs_/ && !/ __pfx_zfs_/) {++ret; print} END {exit ret}'