CMakeLists.txt

cmake_minimum_required(VERSION 2.8)
project(fluent-bit)

set(CMAKE_POSITION_INDEPENDENT_CODE ON)

# Define macro to identify Windows system (without Cygwin)
if(CMAKE_SYSTEM_NAME MATCHES "Windows")
  set(FLB_SYSTEM_WINDOWS On)
  add_definitions(-DFLB_SYSTEM_WINDOWS)
endif()

# Update CFLAGS
if (MSVC)
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W3")
else()
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
endif()

if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Windows")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D__FILENAME__='\"$(subst ${CMAKE_SOURCE_DIR}/,,$(abspath $<))\"'")
else()
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D__FILENAME__=__FILE__")
endif()

include(GNUInstallDirs)
include(ExternalProject)
include(cmake/FindJournald.cmake)
include(cmake/FindMonkey.cmake)
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/sanitizers-cmake/cmake" ${CMAKE_MODULE_PATH})
find_package(Sanitizers)

# Output paths
set(FLB_ROOT "${CMAKE_CURRENT_SOURCE_DIR}")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/bin")
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/lib")
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/library")

# Fluent Bit Version
set(FLB_VERSION_MAJOR  1)
set(FLB_VERSION_MINOR  1)
set(FLB_VERSION_PATCH  0)
set(FLB_VERSION_STR "${FLB_VERSION_MAJOR}.${FLB_VERSION_MINOR}.${FLB_VERSION_PATCH}")

# Build Options
option(FLB_ALL                "Enable all features"           No)
option(FLB_DEBUG              "Build with debug symbols"      No)
option(FLB_COVERAGE           "Build with code-coverage"      No)
option(FLB_JEMALLOC           "Build with Jemalloc support"   No)
option(FLB_REGEX              "Build with Regex support"     Yes)
option(FLB_PARSER             "Build with Parser support"    Yes)
option(FLB_TLS                "Build with SSL/TLS support"    No)
option(FLB_BINARY             "Build executable binary"      Yes)
option(FLB_EXAMPLES           "Build examples"               Yes)
option(FLB_SHARED_LIB         "Build shared library"         Yes)
option(FLB_VALGRIND           "Enable Valgrind support"       No)
option(FLB_TRACE              "Enable trace mode"             No)
option(FLB_TESTS_RUNTIME      "Enable runtime tests"          No)
option(FLB_TESTS_INTERNAL     "Enable internal tests"         No)
option(FLB_MTRACE             "Enable mtrace support"         No)
option(FLB_POSIX_TLS          "Force POSIX thread storage"    No)
option(FLB_INOTIFY            "Enable inotify support"       Yes)
option(FLB_SQLDB              "Enable SQL embedded DB"        No)
option(FLB_HTTP_SERVER        "Enable HTTP Server"            No)
option(FLB_BACKTRACE          "Enable stacktrace support"    Yes)
option(FLB_LUAJIT             "Enable Lua Scripting support" Yes)
option(FLB_SYSTEM_STRPTIME    "Use strptime in system libc"  Yes)
option(FLB_STATIC_CONF        "Build binary using static configuration")
option(FLB_STREAM_PROCESSOR   "Enable Stream Processor"      Yes)
option(FLB_CORO_STACK_SIZE    "Set coroutine stack size")

# Metrics: Experimental Feature, disabled by default on 0.12 series
# but enabled in the upcoming 0.13 release. Note that development
# mode enable this feature.
option(FLB_METRICS            "Enable metrics support"       No)

# Proxy Plugins
option(FLB_PROXY_GO           "Enable Go plugins support"   Yes)

# Advanced options for Flushing methods
# =====================================
# Flush methods defines under what kind of context/environment the plugins
# flush callback is invoked. Since this is done through co-routines
# there are two options available:
#
# FLB_FLUSH_LIBCO: set by default, use lib/flb_libco implementation which
# supports amd64, arm, x86 and ppc.
#
# FLB_FLUSH_UCONTEXT (DEPRECATED): It uses POSIX ucontext for co-routines
# implementation.
# Despites this is POSIX deprecated, it's supported on Linux and BSD
# systems, but specific old-toolchains do not implement it.

# Build-in Plugins
option(FLB_IN_CPU             "Enable CPU input plugin"            Yes)
option(FLB_IN_DISK            "Enable Disk input plugin"           Yes)
option(FLB_IN_EXEC            "Enable Exec input plugin"           Yes)
option(FLB_IN_FORWARD         "Enable Forward input plugin"        Yes)
option(FLB_IN_HEALTH          "Enable Health input plugin"         Yes)
option(FLB_IN_HTTP            "Enable HTTP input plugin"            No)
option(FLB_IN_MEM             "Enable Memory input plugin"         Yes)
option(FLB_IN_KMSG            "Enable Kernel log input plugin"     Yes)
option(FLB_IN_LIB             "Enable library mode input plugin"   Yes)
option(FLB_IN_RANDOM          "Enable random input plugin"         Yes)
option(FLB_IN_SERIAL          "Enable Serial input plugin"         Yes)
option(FLB_IN_STDIN           "Enable Standard input plugin"       Yes)
option(FLB_IN_SYSLOG          "Enable Syslog input plugin"         Yes)
option(FLB_IN_TAIL            "Enable Tail input plugin"           Yes)
option(FLB_IN_TCP             "Enable TCP input plugin"            Yes)
option(FLB_IN_MQTT            "Enable MQTT Broker input plugin"    Yes)
option(FLB_IN_HEAD            "Enable Head input plugin"           Yes)
option(FLB_IN_PROC            "Enable Process input plugin"        Yes)
option(FLB_IN_SYSTEMD         "Enable Systemd input plugin"        Yes)
option(FLB_IN_DUMMY           "Enable Dummy input plugin"          Yes)
option(FLB_IN_NETIF           "Enable NetworkIF input plugin"      Yes)
option(FLB_IN_STORAGE_BACKLOG "Enable stoage backlog input plugin" Yes)
option(FLB_OUT_AZURE          "Enable Azure output plugin"         Yes)
option(FLB_OUT_BIGQUERY       "Enable BigQuery output plugin"      Yes)
option(FLB_OUT_COUNTER        "Enable Counter output plugin"       Yes)
option(FLB_OUT_ES             "Enable Elasticsearch output plugin" Yes)
option(FLB_OUT_EXIT           "Enable Exit output plugin"          Yes)
option(FLB_OUT_FORWARD        "Enable Forward output plugin"       Yes)
option(FLB_OUT_GELF           "Enable GELF output plugin"          Yes)
option(FLB_OUT_HTTP           "Enable HTTP output plugin"          Yes)
option(FLB_OUT_INFLUXDB       "Enable InfluxDB output plugin"      Yes)
option(FLB_OUT_NATS           "Enable NATS output plugin"          Yes)
option(FLB_OUT_PLOT           "Enable Plot output plugin"          Yes)
option(FLB_OUT_FILE           "Enable file output plugin"          Yes)
option(FLB_OUT_TD             "Enable Treasure Data output plugin" Yes)
option(FLB_OUT_RETRY          "Enable Retry test output plugin"     No)
option(FLB_OUT_SPLUNK         "Enable Splunk output plugin"        Yes)
option(FLB_OUT_STACKDRIVER    "Enable Stackdriver output plugin"   Yes)
option(FLB_OUT_STDOUT         "Enable STDOUT output plugin"        Yes)
option(FLB_OUT_LIB            "Enable library mode output plugin"  Yes)
option(FLB_OUT_NULL           "Enable dev null output plugin"      Yes)
option(FLB_OUT_FLOWCOUNTER    "Enable flowcount output plugin"     Yes)
option(FLB_OUT_KAFKA          "Enable Kafka output plugin"          No)
option(FLB_OUT_KAFKA_REST     "Enable Kafka Rest output plugin"    Yes)
option(FLB_FILTER_GREP        "Enable grep filter"                 Yes)
option(FLB_FILTER_MODIFY      "Enable modify filter"               Yes)
option(FLB_FILTER_STDOUT      "Enable stdout filter"               Yes)
option(FLB_FILTER_PARSER      "Enable parser filter"               Yes)
option(FLB_FILTER_KUBERNETES  "Enable kubernetes filter"           Yes)
option(FLB_FILTER_THROTTLE    "Enable throttle filter"             Yes)
option(FLB_FILTER_NEST        "Enable nest filter"                 Yes)
option(FLB_FILTER_LUA         "Enable Lua scripting filter"        Yes)
option(FLB_FILTER_RECORD_MODIFIER "Enable record_modifier filter"  Yes)

# Enable all features
if(FLB_ALL)
  # Global
  set(FLB_DEBUG        1)
  set(FLB_TLS          1)

  # Input plugins
  set(FLB_IN_CPU       1)
  set(FLB_IN_MEM       1)
  set(FLB_IN_KMSG      1)
  set(FLB_IN_MQTT      1)
  set(FLB_IN_SERIAL    1)
  set(FLB_IN_STDIN     1)
  set(FLB_IN_HEAD      1)
  set(FLB_IN_PROC      1)
  set(FLB_IN_DISK      1)
  set(FLB_IN_DUMMY     1)
  set(FLB_IN_NETIF     1)
  set(FLB_IN_EXEC      1)

  # Output plugins
  set(FLB_OUT_ES       1)
  set(FLB_OUT_FORWARD  1)
  set(FLB_OUT_GELF     1)
  set(FLB_OUT_HTTP     1)
  set(FLB_OUT_NATS     1)
  set(FLB_OUT_NULL     1)
  set(FLB_OUT_PLOT     1)
  set(FLB_OUT_FILE     1)
  set(FLB_OUT_RETRY    1)
  set(FLB_OUT_TD       1)
  set(FLB_OUT_STDOUT   1)
  set(FLB_OUT_LIB      1)
  set(FLB_OUT_FLOWCOUNTER 1)
endif()

if(FLB_DEV)
  set(FLB_DEBUG          On)
  set(FLB_TRACE          On)
  set(FLB_METRICS        On)
  set(FLB_HTTP_SERVER    On)
  set(FLB_TESTS_INTERNAL On)
endif()

# Tweak build targets for Windows
if(CMAKE_SYSTEM_NAME MATCHES "Windows")
  include(cmake/windows-setup.cmake)
endif()

# Tweak build targets for macOS
if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
    execute_process(
    COMMAND brew --prefix
    RESULT_VARIABLE HOMEBREW
    OUTPUT_VARIABLE HOMEBREW_PREFIX
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  if (HOMEBREW EQUAL 0 AND EXISTS "${HOMEBREW_PREFIX}")
    message(STATUS "Found Homebrew at ${HOMEBREW_PREFIX}")
    include(cmake/homebrew.cmake)
  endif()
endif()

if(FLB_COVERAGE)
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -O0 --coverage -fprofile-arcs -ftest-coverage")
  set(CMAKE_BUILD_TYPE "Debug")
endif()

if(FLB_OUT_GELF)
  find_package( ZLIB )
  if ( NOT ZLIB_FOUND )
     set(FLB_OUT_GELF 0)
  endif()
endif()

# Macro to set definitions
macro(FLB_DEFINITION var)
  add_definitions(-D${var})
  set(FLB_BUILD_FLAGS "${FLB_BUILD_FLAGS}#ifndef ${var}\n#define ${var}\n#endif\n")
  set(FLB_INFO_FLAGS "${FLB_INFO_FLAGS} ${var}")
endmacro()

macro(FLB_OPTION option value)
  set(${option} ${value} CACHE "" INTERNAL FORCE)
endmacro()

# Enable Debug symbols if specified
if(FLB_DEBUG)
  set(CMAKE_BUILD_TYPE "Debug")
endif()

if(FLB_PARSER)
  FLB_DEFINITION(FLB_HAVE_PARSER)
  message("Enabling FLB_REGEX since FLB_PARSER requires")
  set(FLB_REGEX On)
endif()

# Is sanitize_address defined ?
if(SANITIZE_ADDRESS)
  FLB_DEFINITION(FLB_HAVE_SANITIZE_ADDRESS)
endif()

# General Headers
include_directories(
  include/
  lib/
  lib/flb_libco
  lib/rbtree
  lib/msgpack-3.1.1/include
  lib/chunkio/include
  lib/LuaJIT-2.1.0-beta3/src/
  ${MONKEY_INCLUDE_DIR}
  )

if(FLB_STREAM_PROCESSOR)
  set(FLB_IN_STREAM_PROCESSOR On)
  FLB_DEFINITION(FLB_HAVE_STREAM_PROCESSOR)
endif()

# On Windows, the core uses libevent
if(CMAKE_SYSTEM_NAME MATCHES "Windows")
  include_directories(
    lib/monkey/mk_core/deps/libevent/include
    ${PROJECT_BINARY_DIR}/lib/monkey/mk_core/deps/libevent/include
    )
endif()

# mk_core is aware about jemalloc usage, we need to disable this as
# fluent-bit do not use it.
set(WITH_SYSTEM_MALLOC  1 CACHE BOOL "Use system memory allocator")

# MsgPack options
option(MSGPACK_ENABLE_CXX             OFF)
option(MSGPACK_ENABLE_SHARED          OFF)
option(MSGPACK_BUILD_TESTS            OFF)
option(MSGPACK_BUILD_EXAMPLES         OFF)
add_subdirectory(lib/msgpack-3.1.1 EXCLUDE_FROM_ALL)

# Chunk I/O
FLB_OPTION(CIO_LIB_STATIC  ON)
FLB_OPTION(CIO_LIB_SHARED  OFF)
add_subdirectory(lib/chunkio EXCLUDE_FROM_ALL)

# Lib: build the core libraries used by Fluent-Bit
FLB_DEFINITION(JSMN_PARENT_LINKS)
FLB_DEFINITION(JSMN_STRICT)
add_subdirectory(lib/jsmn)

# Runtime Tests (filter_kubernetes) requires HTTP Server
if(FLB_TESTS_RUNTIME)
  FLB_OPTION(FLB_HTTP_SERVER  ON)
endif()

# MK Core
macro(MK_SET_OPTION option value)
  set(${option} ${value} CACHE "" INTERNAL FORCE)
endmacro()
MK_SET_OPTION(MK_SYSTEM_MALLOC  ON)
MK_SET_OPTION(MK_DEBUG          ON)

# Build Monkey HTTP Server
if(FLB_HTTP_SERVER)
  add_subdirectory(lib/monkey/ EXCLUDE_FROM_ALL)
else()
  add_subdirectory(lib/monkey/mk_core EXCLUDE_FROM_ALL)
endif()

# SSL/TLS: add encryption support
if(FLB_OUT_TD)
  set(FLB_TLS ON)
endif()

if(FLB_TLS)
  FLB_DEFINITION(FLB_HAVE_TLS)
  option(ENABLE_TESTING  OFF)
  option(ENABLE_PROGRAMS OFF)
  option(INSTALL_MBEDTLS_HEADERS OFF)
  add_subdirectory(lib/mbedtls-2.14.1 EXCLUDE_FROM_ALL)
  include_directories(lib/mbedtls-2.14.1/include)
endif()

# Metrics
if(FLB_METRICS)
  FLB_DEFINITION(FLB_HAVE_METRICS)
endif()

if(FLB_IN_TAIL)
  set(FLB_SQLDB ON)
endif()

if(FLB_SQLDB)
  FLB_DEFINITION(FLB_HAVE_SQLDB)
  add_subdirectory(lib/sqlite-amalgamation-3240000)
  include_directories(lib/sqlite-amalgamation-3240000)
endif()

if(FLB_TRACE)
  FLB_DEFINITION(FLB_HAVE_TRACE)
endif()

if(FLB_HTTP_SERVER)
  FLB_OPTION(FLB_METRICS ON)
  FLB_DEFINITION(FLB_HAVE_METRICS)
  FLB_DEFINITION(FLB_HAVE_HTTP_SERVER)
endif()

FLB_DEFINITION(FLB_HAVE_FLUSH_LIBCO)
if(NOT TARGET co)
  add_subdirectory(lib/flb_libco)
endif()

if(NOT TARGET rbtree)
  add_subdirectory(lib/rbtree)
endif()

# Systemd Journald support
if(JOURNALD_FOUND)
  FLB_DEFINITION(FLB_HAVE_SYSTEMD)
else()
  FLB_OPTION(FLB_IN_SYSTEMD OFF)
endif()

# Valgrind support
check_c_source_compiles("
  #include <valgrind/valgrind.h>
  int main() {
     return 0;
  }" FLB_HAVE_VALGRIND)

if(FLB_VALGRIND OR FLB_HAVE_VALGRIND)
  FLB_DEFINITION(FLB_HAVE_VALGRIND)
endif()

# fork(2) support
check_c_source_compiles("
  #include <unistd.h>
  int main() {
     fork();
     return 0;
  }" FLB_HAVE_FORK)

if(FLB_HAVE_FORK)
  FLB_DEFINITION(FLB_HAVE_FORK)
endif()

# mtrace support
if(FLB_MTRACE)
  check_c_source_compiles("
    #include <mcheck.h>
    int main() {
       return 0;
    }" FLB_HAVE_MTRACE)

  if(FLB_HAVE_MTRACE AND FLB_DEBUG)
    FLB_DEFINITION(FLB_HAVE_MTRACE)
  endif()
endif()

# timespec_get() support
check_c_source_compiles("
  #include <time.h>
  int main() {
     struct tm tm;
     return timespec_get(&tm, TIME_UTC);
  }" FLB_HAVE_TIMESPEC_GET)
if(FLB_HAVE_TIMESPEC_GET)
  FLB_DEFINITION(FLB_HAVE_TIMESPEC_GET)
endif()

# gmtoff support
check_c_source_compiles("
  #include <time.h>
  int main() {
     struct tm tm;
     tm.tm_gmtoff = 0;
     return 0;
  }" FLB_HAVE_GMTOFF)
if(FLB_HAVE_GMTOFF)
  FLB_DEFINITION(FLB_HAVE_GMTOFF)
endif()

# clock_get_time() support for macOS.
check_c_source_compiles("
  #include <mach/clock.h>
  #include <mach/mach.h>
  int main() {
      clock_serv_t cclock;
      mach_timespec_t mts;
      host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
      clock_get_time(cclock, &mts);
      return mach_port_deallocate(mach_task_self(), cclock);
  }" FLB_HAVE_CLOCK_GET_TIME)
if(FLB_HAVE_CLOCK_GET_TIME)
  FLB_DEFINITION(FLB_HAVE_CLOCK_GET_TIME)
endif()

# unix socket support
check_c_source_compiles("
  #include <sys/types.h>
  #include <sys/socket.h>
  int main() {
      int sock;
      sock = socket(AF_UNIX, SOCK_STREAM, 0);
      close(sock);
      return 0;
  }" FLB_HAVE_UNIX_SOCKET)
if(FLB_HAVE_UNIX_SOCKET)
  FLB_DEFINITION(FLB_HAVE_UNIX_SOCKET)
endif()

# Build tools/xxd-c
add_subdirectory(tools/xxd-c)

# Static configuration generator (using xxd-c)
if(FLB_STATIC_CONF)
  FLB_DEFINITION(FLB_HAVE_STATIC_CONF)
  add_subdirectory(gen_static_conf)
endif()

# Special definition to set the coroutine stack size
if(FLB_CORO_STACK_SIZE)
  add_definitions(-DFLB_CORO_STACK_SIZE=${FLB_CORO_STACK_SIZE})
  set(FLB_BUILD_FLAGS "${FLB_BUILD_FLAGS}#ifndef FLB_CORO_STACK_SIZE\n#define FLB_CORO_STACK_SIZE ${FLB_CORO_STACK_SIZE}\n#endif\n")
else()

endif()

# TD Agent options
if(FLB_TD)
  FLB_DEFINITION(FLB_IS_TD_AGENT)
  FLB_OPTION(FLB_JEMALLOC ON)
  set(FLB_PROG_NAME "TD Agent Bit")
  set(FLB_OUT_NAME "td-agent-bit")
  set(WITHOUT_HEADERS On)
else()
  set(FLB_PROG_NAME "Fluent Bit")
  set(FLB_OUT_NAME "fluent-bit")
endif()

if(FLB_PROXY_GO)
  FLB_DEFINITION(FLB_HAVE_PROXY_GO)
endif()

if("${GNU_HOST}" STREQUAL "")
    set(AUTOCONF_HOST_OPT "")
else()
    set(AUTOCONF_HOST_OPT "--host=${GNU_HOST}")
endif()

# strptime(2) support
if (FLB_SYSTEM_STRPTIME)
  FLB_DEFINITION(FLB_HAVE_SYSTEM_STRPTIME)
endif()

# Memory Allocator
# ================
if(FLB_JEMALLOC AND ${CMAKE_SYSTEM_NAME} MATCHES "Linux")
  FLB_DEFINITION(FLB_HAVE_JEMALLOC)
  FLB_DEFINITION(JEMALLOC_MANGLE)

  # Link to Jemalloc as an external dependency
  ExternalProject_Add(jemalloc
    SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/jemalloc-5.1.0
    CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/lib/jemalloc-5.1.0/configure ${AUTOCONF_HOST_OPT} --with-lg-quantum=3 --enable-cc-silence --prefix=<INSTALL_DIR>
    CFLAGS=-std=gnu99\ -Wall\ -pipe\ -g3\ -O3\ -funroll-loops
    BUILD_COMMAND $(MAKE)
    INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/
    INSTALL_COMMAND $(MAKE) install_lib_static install_include)
  add_library(libjemalloc STATIC IMPORTED GLOBAL)
  set_target_properties(libjemalloc PROPERTIES IMPORTED_LOCATION "${CMAKE_CURRENT_BINARY_DIR}/lib/libjemalloc_pic.a")
  add_dependencies(libjemalloc jemalloc)
  include_directories("${CMAKE_BINARY_DIR}/include/")
else()
  FLB_OPTION(FLB_JEMALLOC OFF)
endif()

# LibBacktrace (friendly stacktrace support)
# =========================================
if(FLB_BACKTRACE)
  FLB_DEFINITION(FLB_HAVE_LIBBACKTRACE)
  ExternalProject_Add(backtrace
    SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/libbacktrace-5a99ff7f/
    CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/lib/libbacktrace-5a99ff7f/configure ${AUTOCONF_HOST_OPT} --prefix=<INSTALL_DIR> --enable-shared=no --enable-static=yes
    BUILD_COMMAND $(MAKE)
    )
  add_library(libbacktrace STATIC IMPORTED GLOBAL)
  set_target_properties(libbacktrace PROPERTIES IMPORTED_LOCATION "${CMAKE_CURRENT_BINARY_DIR}/backtrace-prefix/lib/libbacktrace.a")
  add_dependencies(libbacktrace backtrace)
  include_directories("${CMAKE_CURRENT_BINARY_DIR}/backtrace-prefix/include/")
endif()

# Onigmo (Regex Engine)
# =====================
if(FLB_REGEX)
  include(cmake/onigmo.cmake)
  FLB_DEFINITION(FLB_HAVE_REGEX)
endif()

# LuaJIT (Scripting Support)
# ==========================
if(FLB_LUAJIT)
  include(cmake/luajit.cmake)
  FLB_DEFINITION(FLB_HAVE_LUAJIT)
endif()

# Pthread Local Storage
# =====================
# By default we expect the compiler already support thread local storage
# through __thread type, otherwise Fluent Bit fallback to the old POSIX
# pthread mode (pthread_key_t), or it can be forced setting FLB_POSIX_TLS
# for testing/compatibility purposes.
if(NOT FLB_POSIX_TLS)
  check_c_source_compiles("
   __thread int a;
   int main() {
       __tls_get_addr(0);
       return 0;
   }" FLB_HAVE_C_TLS)
  if(FLB_HAVE_C_TLS)
    FLB_DEFINITION(FLB_HAVE_C_TLS)
  endif()
endif()

# accept(4)
check_c_source_compiles("
    #define _GNU_SOURCE
    #include <stdio.h>
    #include <sys/socket.h>
    int main() {
        accept4(0, NULL, NULL, 0);
        return 0;
    }" FLB_HAVE_ACCEPT4)
if(FLB_HAVE_ACCEPT4)
  FLB_DEFINITION(FLB_HAVE_ACCEPT4)
endif()

# inotify_init(2)
if(FLB_INOTIFY)
  check_c_source_compiles("
    #include <sys/inotify.h>
    int main() {
        return inotify_init1(0);
    }" FLB_HAVE_INOTIFY)
  if(FLB_HAVE_INOTIFY)
    FLB_DEFINITION(FLB_HAVE_INOTIFY)
  endif()
endif()

configure_file(
  "${PROJECT_SOURCE_DIR}/include/fluent-bit/flb_info.h.in"
  "${PROJECT_SOURCE_DIR}/include/fluent-bit/flb_info.h"
  )

configure_file(
  "${PROJECT_SOURCE_DIR}/include/fluent-bit/flb_version.h.in"
  "${PROJECT_SOURCE_DIR}/include/fluent-bit/flb_version.h"
  )

# Installation Directories
# ========================
if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
  set(FLB_INSTALL_BINDIR "bin")
  set(FLB_INSTALL_LIBDIR "lib")
  set(FLB_INSTALL_CONFDIR "conf")
else()
  set(FLB_INSTALL_BINDIR ${CMAKE_INSTALL_FULL_BINDIR})
  set(FLB_INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR})
  set(FLB_INSTALL_CONFDIR "${CMAKE_INSTALL_SYSCONFDIR}/${FLB_OUT_NAME}/")
endif()

# Instruct CMake to build the Fluent Bit Core
add_subdirectory(include)
add_subdirectory(plugins)
add_subdirectory(src)

if(FLB_EXAMPLES)
  add_subdirectory(examples)
endif()

if(FLB_TESTS_RUNTIME)
  enable_testing()
  add_subdirectory(tests/runtime/)
endif()

if(FLB_TESTS_INTERNAL)
  enable_testing()
  add_subdirectory(tests/internal/)
endif()

# Installer Generation (Cpack)
# ============================

if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
  set(CPACK_GENERATOR "NSIS")
else()
  set(CPACK_GENERATOR "RPM")
endif()

set(CPACK_PACKAGE_VERSION ${FLB_VERSION_STR})
set(CPACK_PACKAGE_NAME "td-agent-bit")
set(CPACK_PACKAGE_RELEASE 1)
set(CPACK_PACKAGE_CONTACT "Eduardo Silva <eduardo@treasure-data.com>")
set(CPACK_PACKAGE_VENDOR "Treasure Data")
set(CPACK_PACKAGING_INSTALL_PREFIX "/opt/td-agent-bit")
set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
set(CPACK_PACKAGING_INSTALL_PREFIX "/")

if(CPACK_GENERATOR MATCHES "RPM")
  set(CPACK_RPM_PACKAGE_GROUP "System Environment/Daemons")
  set(CPACK_RPM_PACKAGE_LICENSE "Apache v2.0")
  set(CPACK_RPM_PACKAGE_RELEASE ${CPACK_PACKAGE_RELEASE})
  set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}-${CPACK_PACKAGE_RELEASE}.${CMAKE_SYSTEM_PROCESSOR}")
  set(CPACK_PACKAGE_DESCRIPTION_FILE "${PROJECT_SOURCE_DIR}/cpack/description")
  set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Fast data collector for Linux")
  set(CPACK_RPM_SPEC_MORE_DEFINE "%define ignore \#")
  set(CPACK_RPM_USER_FILELIST
      "%ignore /lib"
      "%ignore /lib/systemd"
      "%ignore /lib/systemd/system"
      "%ignore /lib64"
      "%ignore /lib64/pkgconfig"
      "%ignore /usr/local"
      "%ignore /usr/local/bin"
      "%ignore /opt"
      "%ignore /etc")
endif()

if(CPACK_GENERATOR MATCHES "NSIS")
  set(CPACK_MONOLITHIC_INSTALL 1)
  set(CPACK_PACKAGE_INSTALL_DIRECTORY "td-agent-bit")
endif()

include(CPack)