ceph

USE flags

• babeltrace - Add support for LTTng babeltrace
• cephfs - Build support for cephfs, a POSIX compatible filesystem built on top of ceph
• cpu_flags_x86_avx2 - Adds support for Advanced Vector Extensions 2 instructions
• cpu_flags_x86_avx512f - Adds support for AVX-512 Foundation instructions
• cpu_flags_x86_pclmul - Use Carry-less Multiplication instructions ([pclmulqdq] in cpuinfo)
• cpu_flags_x86_sse - Use the SSE instruction set
• cpu_flags_x86_sse2 - Use the SSE2 instruction set
• cpu_flags_x86_sse3 - Use the SSE3 instruction set ([pni] in cpuinfo, NOT ssse3)
• cpu_flags_x86_sse4_1 - Enable SSE4.1 instruction support
• cpu_flags_x86_sse4_2 - Enable SSE4.2 instruction support
• cpu_flags_x86_ssse3 - Use the SSSE3 instruction set (NOT sse3/pni)
• custom-cflags - Build with user-specified CFLAGS (unsupported)
• debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
• diskprediction - Enable local diskprediction module to predict disk failures
• dpdk - Enable DPDK messaging
• fuse - Build fuse client
• grafana - Install grafana dashboards
• gtk - Add support for x11-libs/gtk+ (The GIMP Toolkit)
• jaeger - Enable jaegertracing and it's dependent libraries
• jemalloc - Use dev-libs/jemalloc for memory management
• kafka - Rados Gateway's pubsub support for Kafka push endpoint
• kerberos - Add kerberos support
• ldap - Add LDAP support (Lightweight Directory Access Protocol)
• libressl - Use dev-libs/libressl instead of dev-libs/openssl when applicable (see also the ssl useflag)
• lttng - Add support for LTTng
• lua_single_target_lua5-3 - Build for Lua 5.3 only
• mgr - Build the ceph-mgr daemon
• numa - Use sys-process/numactl for numa support in rocksdb
• pmdk - Enable PMDK libraries
• python - Add optional support/bindings for the Python language
• python_targets_python2_6 - Build with Python 2.6 (removed)
• python_targets_python2_7 - Build with Python 2.7
• python_targets_python3_4 - Build with Python 3.4
• python_targets_python3_5 - Build with Python 3.5
• python_targets_python3_6 - Build with Python 3.6
• python_targets_python3_7 - Build with Python 3.7
• python_targets_python3_8 - Build with Python 3.8
• python_targets_python3_9 - Build with Python 3.9
• rabbitmq - Use rabbitmq-c to build rgw amqp push endpoint
• radosgw - Add radosgw support
• rbd-rwl - Enable librbd persistent write back cache
• rbd-ssd - Enable librbd persistent write back cache for SSDs
• rgw-lua - Rados Gateway's support for dynamically adding lua packagess
• spdk - Enable SPDK user-mode storage driver toolkit
• sqlite - Add support for sqlite - embedded sql database
• ssl - Add support for SSL/TLS connections (Secure Socket Layer / Transport Layer Security)
• static-libs - Build static versions of dynamic libraries as well
• system-boost - Use system dev-libs/boost instead of the bundled one
• systemd - Enable use of systemd-specific libraries and features like socket activation or session tracking
• tcmalloc - Use the dev-util/google-perftools libraries to replace the malloc() implementation with a possibly faster one
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
• uring - Build with support for sys-libs/liburing
• xfs - Add xfs support
• zbd - Enable sys-block/libzbd bluestore backend
• zfs - Add zfs support

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