+# Prevent recursive expansions of $(CFLAGS) to avoid repeatedly performing
+# compile tests
+CFLAGS:=$(CFLAGS)
+
+CFLAGS+=-std=gnu11 -O2 -g -MMD -Wall -fPIC \
+ -Wno-pointer-sign \
+ -Wno-deprecated-declarations \
+ -fno-strict-aliasing \
+ -fno-delete-null-pointer-checks \
+ -I. -Ic_src -Iinclude -Iraid \
+ -D_FILE_OFFSET_BITS=64 \
+ -D_GNU_SOURCE \
+ -D_LGPL_SOURCE \
+ -DRCU_MEMBARRIER \
+ -DZSTD_STATIC_LINKING_ONLY \
+ -DFUSE_USE_VERSION=35 \
+ -DNO_BCACHEFS_CHARDEV \
+ -DNO_BCACHEFS_FS \
+ -DNO_BCACHEFS_SYSFS \
+ -DVERSION_STRING='"$(VERSION)"' \
+ $(EXTRA_CFLAGS)
+
+# Intenionally not doing the above to $(LDFLAGS) because we rely on
+# recursive expansion here (CFLAGS is not yet completely built by this line)
+LDFLAGS+=$(CFLAGS) $(EXTRA_LDFLAGS)
+
+ifdef CARGO_TOOLCHAIN_VERSION
+ CARGO_TOOLCHAIN = +$(CARGO_TOOLCHAIN_VERSION)
+endif
+
+CARGO_ARGS=${CARGO_TOOLCHAIN}
+CARGO=cargo $(CARGO_ARGS)
+CARGO_PROFILE=release
+# CARGO_PROFILE=debug
+
+CARGO_BUILD_ARGS=--$(CARGO_PROFILE)
+CARGO_BUILD=$(CARGO) build $(CARGO_BUILD_ARGS)
+
+CARGO_CLEAN=$(CARGO) clean $(CARGO_CLEAN_ARGS)
+
+include Makefile.compiler
+
+CFLAGS+=$(call cc-disable-warning, unused-but-set-variable)
+CFLAGS+=$(call cc-disable-warning, stringop-overflow)
+CFLAGS+=$(call cc-disable-warning, zero-length-bounds)
+CFLAGS+=$(call cc-disable-warning, missing-braces)
+CFLAGS+=$(call cc-disable-warning, zero-length-array)
+CFLAGS+=$(call cc-disable-warning, shift-overflow)
+CFLAGS+=$(call cc-disable-warning, enum-conversion)
+CFLAGS+=$(call cc-disable-warning, gnu-variable-sized-type-not-at-end)
+
+PKGCONFIG_LIBS="blkid uuid liburcu libsodium zlib liblz4 libzstd libudev libkeyutils udev"
+ifdef BCACHEFS_FUSE
+ PKGCONFIG_LIBS+="fuse3 >= 3.7"
+ CFLAGS+=-DBCACHEFS_FUSE
+ export RUSTFLAGS=--cfg fuse
+endif
+
+PKGCONFIG_CFLAGS:=$(shell $(PKG_CONFIG) --cflags $(PKGCONFIG_LIBS))
+ifeq (,$(PKGCONFIG_CFLAGS))
+ $(error pkg-config error, command: $(PKG_CONFIG) --cflags $(PKGCONFIG_LIBS))
+endif
+PKGCONFIG_LDLIBS:=$(shell $(PKG_CONFIG) --libs $(PKGCONFIG_LIBS))
+ifeq (,$(PKGCONFIG_LDLIBS))
+ $(error pkg-config error, command: $(PKG_CONFIG) --libs $(PKGCONFIG_LIBS))
+endif
+PKGCONFIG_UDEVDIR:=$(shell $(PKG_CONFIG) --variable=udevdir udev)
+ifeq (,$(PKGCONFIG_UDEVDIR))
+ $(error pkg-config error, command: $(PKG_CONFIG) --variable=udevdir udev)
+endif
+PKGCONFIG_UDEVRULESDIR:=$(PKGCONFIG_UDEVDIR)/rules.d
+
+CFLAGS+=$(PKGCONFIG_CFLAGS)
+LDLIBS+=$(PKGCONFIG_LDLIBS)
+LDLIBS+=-lm -lpthread -lrt -lkeyutils -laio -ldl
+LDLIBS+=$(EXTRA_LDLIBS)
+
+ifeq ($(PREFIX),/usr)
+ ROOT_SBINDIR?=/sbin
+ INITRAMFS_DIR=$(PREFIX)/share/initramfs-tools
+else
+ ROOT_SBINDIR?=$(PREFIX)/sbin
+ INITRAMFS_DIR=/etc/initramfs-tools
+endif
+
+PKGCONFIG_SERVICEDIR:=$(shell $(PKG_CONFIG) --variable=systemdsystemunitdir systemd)
+ifeq (,$(PKGCONFIG_SERVICEDIR))
+ $(warning skipping systemd integration)
+else
+BCACHEFSCK_ARGS=-f -n
+systemd_libexecfiles=\
+ fsck/bcachefsck_fail \
+ fsck/bcachefsck_all
+
+systemd_services=\
+ fsck/bcachefsck_fail@.service \
+ fsck/bcachefsck@.service \
+ fsck/system-bcachefsck.slice \
+ fsck/bcachefsck_all_fail.service \
+ fsck/bcachefsck_all.service \
+ fsck/bcachefsck_all.timer
+
+built_scripts+=\
+ fsck/bcachefsck_fail@.service \
+ fsck/bcachefsck@.service \
+ fsck/bcachefsck_all_fail.service \
+ fsck/bcachefsck_all \
+ fsck/bcachefsck_all.service
+
+%.service: %.service.in
+ @echo " [SED] $@"
+ $(Q)sed -e "s|@libexecdir@|$(LIBEXECDIR)|g" \
+ -e "s|@bcachefsck_args@|$(BCACHEFSCK_ARGS)|g" < $< > $@
+
+fsck/bcachefsck_all: fsck/bcachefsck_all.in
+ @echo " [SED] $@"
+ $(Q)sed -e "s|@bcachefsck_args@|$(BCACHEFSCK_ARGS)|g" < $< > $@
+
+optional_build+=$(systemd_libexecfiles) $(systemd_services)
+optional_install+=install_systemd
+endif # PKGCONFIG_SERVICEDIR
+
+.PHONY: all
+all: bcachefs $(optional_build)
+
+.PHONY: debug
+debug: CFLAGS+=-Werror -DCONFIG_BCACHEFS_DEBUG=y -DCONFIG_VALGRIND=y
+debug: bcachefs
+
+.PHONY: tests
+tests: tests/test_helper
+
+.PHONY: TAGS tags
+TAGS:
+ ctags -e -R .
+
+tags:
+ ctags -R .
+
+SRCS:=$(sort $(shell find . -type f ! -path '*/.*/*' -iname '*.c'))
+DEPS:=$(SRCS:.c=.d)
+-include $(DEPS)
+
+OBJS:=$(SRCS:.c=.o)
+
+%.o: %.c
+ @echo " [CC] $@"
+ $(Q)$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
+
+BCACHEFS_DEPS=libbcachefs.a
+RUST_SRCS:=$(shell find src bch_bindgen/src -type f -iname '*.rs')
+
+bcachefs: $(BCACHEFS_DEPS) $(RUST_SRCS)
+ $(Q)$(CARGO_BUILD)
+
+libbcachefs.a: $(filter-out ./tests/%.o, $(OBJS))
+ @echo " [AR] $@"
+ $(Q)ar -rc $@ $+
+
+tests/test_helper: $(filter ./tests/%.o, $(OBJS))
+ @echo " [LD] $@"
+ $(Q)$(CC) $(LDFLAGS) $+ $(LOADLIBES) $(LDLIBS) -o $@
+
+# If the version string differs from the last build, update the last version
+ifneq ($(VERSION),$(shell cat .version 2>/dev/null))
+.PHONY: .version
+endif
+.version:
+ @echo " [VERS] $@"
+ $(Q)echo '$(VERSION)' > $@
+
+# Rebuild the 'version' command any time the version string changes
+cmd_version.o : .version
+
+.PHONY: install
+install: INITRAMFS_HOOK=$(INITRAMFS_DIR)/hooks/bcachefs
+install: INITRAMFS_SCRIPT=$(INITRAMFS_DIR)/scripts/local-premount/bcachefs
+install: bcachefs $(optional_install)
+ $(INSTALL) -m0755 -D target/release/bcachefs -t $(DESTDIR)$(ROOT_SBINDIR)
+ $(INSTALL) -m0644 -D bcachefs.8 -t $(DESTDIR)$(PREFIX)/share/man/man8/
+ $(INSTALL) -m0755 -D initramfs/script $(DESTDIR)$(INITRAMFS_SCRIPT)
+ $(INSTALL) -m0755 -D initramfs/hook $(DESTDIR)$(INITRAMFS_HOOK)
+ $(INSTALL) -m0644 -D udev/64-bcachefs.rules -t $(DESTDIR)$(PKGCONFIG_UDEVRULESDIR)/
+ $(LN) -sfr $(DESTDIR)$(ROOT_SBINDIR)/bcachefs $(DESTDIR)$(ROOT_SBINDIR)/mkfs.bcachefs
+ $(LN) -sfr $(DESTDIR)$(ROOT_SBINDIR)/bcachefs $(DESTDIR)$(ROOT_SBINDIR)/fsck.bcachefs
+ $(LN) -sfr $(DESTDIR)$(ROOT_SBINDIR)/bcachefs $(DESTDIR)$(ROOT_SBINDIR)/mount.bcachefs
+ $(LN) -sfr $(DESTDIR)$(ROOT_SBINDIR)/bcachefs $(DESTDIR)$(ROOT_SBINDIR)/mkfs.fuse.bcachefs
+ $(LN) -sfr $(DESTDIR)$(ROOT_SBINDIR)/bcachefs $(DESTDIR)$(ROOT_SBINDIR)/fsck.fuse.bcachefs
+ $(LN) -sfr $(DESTDIR)$(ROOT_SBINDIR)/bcachefs $(DESTDIR)$(ROOT_SBINDIR)/mount.fuse.bcachefs
+
+ sed -i '/^# Note: make install replaces/,$$d' $(DESTDIR)$(INITRAMFS_HOOK)
+ echo "copy_exec $(ROOT_SBINDIR)/bcachefs /sbin/bcachefs" >> $(DESTDIR)$(INITRAMFS_HOOK)
+ echo "copy_exec $(ROOT_SBINDIR)/mount.bcachefs /sbin/mount.bcachefs" >> $(DESTDIR)$(INITRAMFS_HOOK)
+
+.PHONY: install_systemd
+install_systemd: $(systemd_services) $(systemd_libexecfiles)
+ $(INSTALL) -m0755 -D $(systemd_libexecfiles) -t $(DESTDIR)$(LIBEXECDIR)
+ $(INSTALL) -m0644 -D $(systemd_services) -t $(DESTDIR)$(PKGCONFIG_SERVICEDIR)
+
+.PHONY: clean