Build and Install
Fluent Bit uses CMake as it build system. The suggested procedure to prepare the build system consists on the following steps:

Prepare environment

In the following steps you can find exact commands to build and install the project with the default options. If you already know how CMake works you can skip this part and look at the build options available.
Change to the build/ directory inside the Fluent Bit sources:
$ cd build/
Let CMake configure the project specifying where the root path is located:
$ cmake ../
-- The C compiler identification is GNU 4.9.2
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- The CXX compiler identification is GNU 4.9.2
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
...
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE)
-- Looking for accept4
-- Looking for accept4 - not found
-- Configuring done
-- Generating done
-- Build files have been written to: /home/edsiper/coding/fluent-bit/build
Now you are ready to start the compilation process through the simple make command:
$ make
Scanning dependencies of target msgpack
[ 2%] Building C object lib/msgpack-1.1.0/CMakeFiles/msgpack.dir/src/unpack.c.o
[ 4%] Building C object lib/msgpack-1.1.0/CMakeFiles/msgpack.dir/src/objectc.c.o
[ 7%] Building C object lib/msgpack-1.1.0/CMakeFiles/msgpack.dir/src/version.c.o
...
[ 19%] Building C object lib/monkey/mk_core/CMakeFiles/mk_core.dir/mk_file.c.o
[ 21%] Building C object lib/monkey/mk_core/CMakeFiles/mk_core.dir/mk_rconf.c.o
[ 23%] Building C object lib/monkey/mk_core/CMakeFiles/mk_core.dir/mk_string.c.o
...
Scanning dependencies of target fluent-bit-static
[ 66%] Building C object src/CMakeFiles/fluent-bit-static.dir/flb_pack.c.o
[ 69%] Building C object src/CMakeFiles/fluent-bit-static.dir/flb_input.c.o
[ 71%] Building C object src/CMakeFiles/fluent-bit-static.dir/flb_output.c.o
...
Linking C executable ../bin/fluent-bit
[100%] Built target fluent-bit-bin
to continue installing the binary on the system just do:
$ make install
it's likely you may need root privileges so you can try to prefixing the command with sudo.

Build Options

Fluent Bit provides certain options to CMake that can be enabled or disabled when configuring, please refer to the following tables under the General Options, Input Plugins and Output Plugins sections.

General Options

option
description
default
FLB_ALL
Enable all features available
No
FLB_DEBUG
Build binaries with debug symbols
No
FLB_JEMALLOC
Use Jemalloc as default memory allocator
No
FLB_TLS
Builds with SSL/TLS support
No
FLB_BINARY
Build executable
Yes
FLB_EXAMPLES
Build examples
Yes
FLB_SHARED_LIB
Build shared library
Yes
FLB_VALGRIND
Enable Valgrind support
No
FLB_TRACE
Enable trace mode
No
FLB_TESTS_RUNTIME
Enable runtime tests
No
FLB_TESTS_INTERNAL
Enable internal tests
No
FLB_TESTS
Enable tests
No
FLB_MTRACE
Enable mtrace support
No
FLB_INOTIFY
Enable Inotify support
Yes
FLB_POSIX_TLS
Force POSIX thread storage
No
FLB_SQLDB
Enable SQL embedded database support
No
FLB_HTTP_SERVER
Enable HTTP Server
No
FLB_BACKTRACE
Enable backtrace/stacktrace support
Yes
FLB_LUAJIT
Enable Lua scripting support
Yes
FLB_STATIC_CONF
Build binary using static configuration files. The value of this option must be a directory containing configuration files.

Input Plugins

The input plugins provides certain features to gather information from a specific source type which can be a network interface, some built-in metric or through a specific input device, the following input plugins are available:
option
description
default
Enable CPU input plugin
On
Enable Forward input plugin
On
Enable Head input plugin
On
Enable Health input plugin
On
Enable Kernel log input plugin
On
Enable Memory input plugin
On
FLB_IN_RANDOM
Enable Random input plugin
On
Enable Serial input plugin
On
Enable Standard input plugin
On
FLB_IN_TCP
Enable TCP input plugin
On
Enable MQTT input plugin
On
Enable Xbee input plugin
Off

Output Plugins

The output plugins gives the capacity to flush the information to some external interface, service or terminal, the following table describes the output plugins available as of this version:
option
description
default
Enable Elastic Search output plugin
On
Enable Fluentd output plugin
On
Enable HTTP output plugin
On
Enable NATS output plugin
Off
FLB_OUT_PLOT
Enable Plot output plugin
On
Enable STDOUT output plugin
On
Enable Treasure Data output plugin
On
FLB_OUT_NULL
Enable /dev/null output plugin
On
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Outline
Prepare environment
Build Options
General Options
Input Plugins
Output Plugins