include(CheckSymbolExists)
include(CheckIncludeFile)
include(CheckIncludeFileCXX)
include(CheckIncludeFiles)
include(CheckFunctionExists)

check_include_file(arpa/inet.h HAVE_ARPA_INET_H)
check_include_file(assert.h HAVE_ASSERT_H)
check_include_file(dlfcn.h HAVE_DLFCN_H)
check_include_file(fcntl.h HAVE_FCNTL_H)
check_include_file(float.h HAVE_FLOAT_H)
check_include_file(inttypes.h HAVE_INTTYPES_H)
check_include_file(limits.h HAVE_LIMITS_H)
check_include_file(malloc.h HAVE_MALLOC_H)
check_include_file(netdb.h HAVE_NETDB_H)
check_include_file(netinet/in.h HAVE_NETINET_IN_H)
check_include_file(stdio.h HAVE_STDIO_H)
check_include_file(stddef.h HAVE_STDDEF_H)
check_include_file(stdlib.h HAVE_STDLIB_H)
check_include_file(stdint.h HAVE_STDINT_H)
check_include_file(syslog.h HAVE_SYSLOG_H)
check_include_file(unistd.h HAVE_UNISTD_H)
check_include_file(pthread.h HAVE_PTHREAD_H)
check_include_file(math.h HAVE_MATH_H)
check_include_file(memory.h HAVE_MEMORY_H)
check_include_file(sys/file.h HAVE_SYS_FILE_H)
check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H)
check_include_file(sys/time.h HAVE_SYS_TIME_H)
check_include_file(sys/param.h HAVE_SYS_PARAM_H)
check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H)
check_include_file(sys/socket.h HAVE_SYS_SOCKET_H)
check_include_file(sys/stat.h HAVE_SYS_STAT_H)
check_include_file(sys/types.h HAVE_SYS_TYPES_H)
check_include_file(sys/un.h HAVE_SYS_UN_H)
check_include_file(sys/poll.h HAVE_SYS_POLL_H)
check_include_file(sys/select.h HAVE_SYS_SELECT_H)
check_include_file(sys/epoll.h HAVE_SYS_EPOLL_H)
check_include_file(sys/eventfd.h HAVE_SYS_EVENTFD_H)
check_include_file(sys/inotify.h HAVE_SYS_INOTIFY_H)
check_include_file(sys/signalfd.h HAVE_SYS_SIGNALFD_H)
check_include_file(sched.h HAVE_SCHED_H)
check_include_file(strings.h HAVE_STRINGS_H)
check_include_file(string.h HAVE_STRING_H)
check_include_file(pcap/pcap.h HAVE_PCAP_H)

check_function_exists(clock_gettime HAVE_CLOCK_GETTIME)
check_function_exists(floor HAVE_FLOOR)
check_function_exists(gethostbyname HAVE_GETHOSTBYNAME)
check_function_exists(getpagesize HAVE_GETPAGESIZE)
check_function_exists(gettimeofday HAVE_GETTIMEOFDAY)
check_function_exists(inet_ntoa HAVE_INET_NTOA)
check_function_exists(memmove HAVE_MEMMOVE)
check_function_exists(memset HAVE_MEMSET)
check_function_exists(munmap HAVE_MUNMAP)
check_function_exists(pow HAVE_POW)
check_function_exists(regcomp HAVE_REGCOMP)
check_function_exists(setenv HAVE_SETENV)
check_function_exists(socket HAVE_SOCKET)
check_function_exists(sqrt HAVE_SQRT)
check_function_exists(strchr HAVE_STRCHR)
check_function_exists(strcspn HAVE_STRCSPN)
check_function_exists(strdup HAVE_STRDUP)
check_function_exists(strerror HAVE_STRERROR)
check_function_exists(strrchr HAVE_STRRCHR)
check_function_exists(strspn HAVE_STRRSPN)
check_function_exists(strstr HAVE_STRSTR)
check_function_exists(strtol HAVE_STRTOL)
check_function_exists(strtoul HAVE_STRTOUL)
check_function_exists(strtoull HAVE_STRTOULL)
check_function_exists(epoll_ctl HAVE_EPOLL_CTL)
check_function_exists(eventfd HAVE_EVENTFD)
check_function_exists(inotify_init HAVE_INOTIFY_INIT)
check_function_exists(nanosleep HAVE_NANOSLEEP)
check_function_exists(poll HAVE_POLL)
check_function_exists(select HAVE_SELECT)
check_function_exists(signalfd HAVE_SIGNALFD)
check_function_exists(gethostbyname_r HAVE_GETHOSTBYNAME_R)
check_function_exists(strerror_r HAVE_STRERROR_R)
check_function_exists(ether_aton_r HAVE_ETHER_ATON_R)
check_function_exists(inet_network HAVE_INET_NETWORK)

include(CheckCSourceCompiles)

# generate a config.h file
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake/config.h.cmake" "${CMAKE_CURRENT_BINARY_DIR}/config.h")