initial buildroot for linux 5.15

package/zfs/Config.in

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+comment "zfs needs a Linux kernel to be built"
+	depends on !BR2_LINUX_KERNEL
+
+comment "zfs needs udev /dev management"
+	depends on BR2_LINUX_KERNEL
+	depends on !BR2_PACKAGE_HAS_UDEV
+
+config BR2_PACKAGE_ZFS
+	bool "zfs"
+	depends on BR2_LINUX_KERNEL
+	depends on BR2_PACKAGE_HAS_UDEV
+	depends on BR2_USE_MMU  # util-linux (libblkid)
+	depends on BR2_TOOLCHAIN_HAS_THREADS  # libtirpc
+	select BR2_PACKAGE_UTIL_LINUX
+	select BR2_PACKAGE_UTIL_LINUX_LIBBLKID
+	select BR2_PACKAGE_UTIL_LINUX_LIBUUID
+	select BR2_PACKAGE_LIBTIRPC if !BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_PACKAGE_LIBAIO
+	select BR2_PACKAGE_OPENSSL
+	select BR2_PACKAGE_ZLIB
+	help
+	  OpenZFS on Linux and FreeBSD
+
+	  OpenZFS is an advanced file system and volume manager which
+	  was originally developed for Solaris and is now maintained by
+	  the OpenZFS community. This repository contains the code for
+	  running OpenZFS on Linux and FreeBSD.
+
+	  This package builds the kernel modules and userland utils
+	  required to operates with ZFS volumes.
+
+	  http://zfsonlinux.org/

package/zfs/zfs.hash

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+# From https://github.com/openzfs/zfs/releases/download/zfs-2.0.5/zfs-2.0.5.sha256.asc
+sha256  3a17498d704ebf4c5d7231660f6fb44ae07a1545519f567452a4270851a86ec9  zfs-2.0.5.tar.gz
+
+# Hash for license files:
+sha256  1ffb70c33c4f79f04e947facc5c7851f289609256aacb47fc115f700427d9520  LICENSE
+sha256  f125a37c829705eff3e6f77a9f6c58fd71060f84ab54180b98fafdf94a2021eb  COPYRIGHT

package/zfs/zfs.mk

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+################################################################################
+#
+# zfs
+#
+################################################################################
+
+ZFS_VERSION = 2.0.5
+ZFS_SITE = https://github.com/openzfs/zfs/releases/download/zfs-$(ZFS_VERSION)
+ZFS_LICENSE = CDDL
+ZFS_LICENSE_FILES = LICENSE COPYRIGHT
+ZFS_CPE_ID_VENDOR = openzfs
+ZFS_CPE_ID_PRODUCT = openzfs
+
+ZFS_AUTORECONF = YES
+
+ZFS_DEPENDENCIES = libaio openssl udev util-linux zlib
+
+# sysvinit installs only a commented-out modules-load.d/ config file
+ZFS_CONF_OPTS = \
+	--with-linux=$(LINUX_DIR) \
+	--with-linux-obj=$(LINUX_DIR) \
+	--disable-rpath \
+	--disable-sysvinit
+
+ifeq ($(BR2_PACKAGE_LIBTIRPC),y)
+ZFS_DEPENDENCIES += libtirpc
+ZFS_CONF_OPTS += --with-tirpc
+else
+ZFS_CONF_OPTS += --without-tirpc
+endif
+
+ifeq ($(BR2_INIT_SYSTEMD),y)
+# Installs the optional systemd generators, units, and presets files.
+ZFS_CONF_OPTS += --enable-systemd
+else
+ZFS_CONF_OPTS += --disable-systemd
+endif
+
+# The optional PyZFS uses different scripts depending on the python
+# version (ex: arc_summary2 or arc_summary3).
+ifeq ($(BR2_PACKAGE_PYTHON),y)
+ZFS_DEPENDENCIES += python python-setuptools host-python-cffi
+ZFS_CONF_ENV += \
+	PYTHON=$(HOST_DIR)/usr/bin/python2 \
+	PYTHON_CPPFLAGS="`$(STAGING_DIR)/usr/bin/python2-config --includes`" \
+	PYTHON_LIBS="`$(STAGING_DIR)/usr/bin/python2-config --ldflags`" \
+	PYTHON_SITE_PKG="/usr/lib/python$(PYTHON_VERSION_MAJOR)/site-packages"
+ZFS_CONF_OPTS += --enable-pyzfs
+else ifeq ($(BR2_PACKAGE_PYTHON3),y)
+ZFS_DEPENDENCIES += python3 python-setuptools host-python-cffi
+ZFS_CONF_ENV += \
+	PYTHON=$(HOST_DIR)/usr/bin/python3 \
+	PYTHON_CPPFLAGS="`$(STAGING_DIR)/usr/bin/python3-config --includes`" \
+	PYTHON_LIBS="`$(STAGING_DIR)/usr/bin/python3-config --ldflags`" \
+	PYTHON_EXTRA_LIBS="`$(STAGING_DIR)/usr/bin/python3-config --libs --embed`" \
+	PYTHON_SITE_PKG="/usr/lib/python$(PYTHON_VERSION_MAJOR)/site-packages"
+ZFS_CONF_OPTS += --enable-pyzfs
+else
+ZFS_CONF_OPTS += --disable-pyzfs --without-python
+endif
+
+ifeq ($(BR2_PACKAGE_LINUX_PAM),y)
+ZFS_DEPENDENCIES += linux-pam
+ZFS_CONF_ENV += --enable-pam=yes
+else
+ZFS_CONF_OPTS += --disable-pam
+endif
+
+# ZFS userland tools are unfunctional without the Linux kernel modules.
+ZFS_MODULE_SUBDIRS = \
+	module/avl \
+	module/icp \
+	module/lua \
+	module/nvpair \
+	module/spl \
+	module/unicode \
+	module/zcommon \
+	module/zstd \
+	module/zfs
+
+# These requirements will be validated by zfs/config/kernel-config-defined.m4
+define ZFS_LINUX_CONFIG_FIXUPS
+	$(call KCONFIG_DISABLE_OPT,CONFIG_DEBUG_LOCK_ALLOC)
+	$(call KCONFIG_DISABLE_OPT,CONFIG_TRIM_UNUSED_KSYMS)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_CRYPTO_DEFLATE)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_ZLIB_DEFLATE)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_ZLIB_INFLATE)
+endef
+
+$(eval $(kernel-module))
+$(eval $(autotools-package))