cmake_minimum_required(VERSION 3.0 FATAL_ERROR)

project(libev C)

set (libev_VERSION_MAJOR 4)
set (libev_VERSION_MINOR 33)
set(VERSION TRUE)

include_directories("${PROJECT_SOURCE_DIR}")
include_directories("${PROJECT_BINARY_DIR}")

include(CheckSymbolExists)

set(LIBEV_SOURCES ev.c event.c)

check_symbol_exists(epoll_ctl sys/epoll.h HAVE_EPOLL_CTL)
check_symbol_exists(clock_gettime time.h HAVE_CLOCK_GETTIME)
find_file(HAVE_DLFCN_H dlfcn.h)
check_symbol_exists(eventfd sys/eventfd.h HAVE_EVENTFD)
set(CMAKE_REQUIRED_LIBRARIES -lm)
check_symbol_exists(floor math.h HAVE_FLOOR)
check_symbol_exists(inotify_init sys/inotify.h HAVE_INOTIFY_INIT)
find_file(HAVE_INTTYPES_H inttypes.h)
check_symbol_exists(kqueue sys/time.h;sys/types.h;sys/event.h HAVE_KQUEUE)
find_library(HAVE_LIBRT librt.so)
find_file(HAVE_MEMORY_H memory.h)
check_symbol_exists(nanosleep time.h HAVE_NANOSLEEP)
check_symbol_exists(poll poll.h HAVE_POLL)
find_file(HAVE_POLL_H poll.h)
check_symbol_exists(port_create port.h HAVE_PORT_CREATE)
find_file(HAVE_PORT_H port.h)
check_symbol_exists(select sys/select.h HAVE_SELECT)
check_symbol_exists(signalfd sys/signalfd.h HAVE_SIGNALFD)
find_file(HAVE_STDINT_H stdint.h)
find_file(HAVE_STDLIB_H stdlib.h)
find_file(HAVE_STRINGS_H strings.h)
find_file(HAVE_STRING_H string.h)
find_file(HAVE_SYS_EPOLL_H sys/epoll.h)
find_file(HAVE_SYS_EVENTFD_H sys/eventfd.h)
find_file(HAVE_SYS_EVENT_H sys/event.h)
find_file(HAVE_SYS_INOTIFY_H sys/inotify.h)
find_file(HAVE_SYS_SELECT_H sys/select.h)
find_file(HAVE_SYS_SIGNALFD_H sys/signalfd.h)
find_file(HAVE_SYS_STAT_H sys/stat.h)
find_file(HAVE_SYS_TYPES_H sys/types.h)
find_file(HAVE_UNISTD_H unistd.h)
find_file(HAVE_LINUX_AIO_ABI_H linux/aio_abi.h)
check_symbol_exists(kernel_rwf_t linux/fs.h HAVE_KERNEL_RWF_T)
find_file(HAVE_LINUX_FS_H linux/fs.h)
find_file(HAVE_SYS_TIMERFD_H sys/timerfd.h)


configure_file (
  "${PROJECT_SOURCE_DIR}/cmake_config.h.in"
  "${PROJECT_BINARY_DIR}/config.h"
)

set(CMAKE_C_FLAGS  "${CMAKE_C_FLAGS} -DHAVE_CONFIG_H -fPIC -DPIC")

add_library(ev STATIC ${LIBEV_SOURCES})