# SPDX-FileCopyrightText: Allen Winter <winter@kde.org>
# SPDX-License-Identifier: LGPL-2.1-only OR MPL-2.0

include(CheckIncludeFiles)
check_include_files(
  byteswap.h
  HAVE_BYTESWAP_H
)
check_include_files(
  dirent.h
  HAVE_DIRENT_H
)
check_include_files(
  endian.h
  HAVE_ENDIAN_H
)
check_include_files(
  inttypes.h
  HAVE_INTTYPES_H
)
check_include_files(
  pthread.h
  HAVE_PTHREAD_H
)
check_include_files(
  sys/endian.h
  HAVE_SYS_ENDIAN_H
)
check_include_files(
  sys/param.h
  HAVE_SYS_PARAM_H
)
check_include_files(
  sys/utsname.h
  HAVE_SYS_UTSNAME_H
)
check_include_files(
  fcntl.h
  HAVE_FCNTL_H
)
check_include_files(
  unistd.h
  HAVE_UNISTD_H
)
check_include_files(
  wctype.h
  HAVE_WCTYPE_H
)
check_include_files(
  stdbool.h
  HAVE_STDBOOL_H
)

include(CheckFunctionExists)
if(WIN32 AND MSVC)
  check_function_exists(
    _access
    HAVE__ACCESS
  ) #Windows <io.h>
  check_function_exists(
    _getpid
    HAVE__GETPID
  ) #Windows <process.h>
  check_function_exists(
    _mkdir
    HAVE__MKDIR
  ) #Windows <direct.h>
  check_function_exists(
    _open
    HAVE__OPEN
  ) #Windows <io.h>
  check_function_exists(
    _snprintf
    HAVE__SNPRINTF
  ) #Windows <stdio.h>
  check_function_exists(
    _stat
    HAVE__STAT
  ) #Windows <sys/types.h>,<sys/stat.h>
  check_function_exists(
    _fstat64
    HAVE__FSTAT64
  ) #Windows <sys/types.h>,<sys/stat.h>
  check_function_exists(
    _strdup
    HAVE__STRDUP
  ) #Windows <string.h>
  check_function_exists(
    _stricmp
    HAVE__STRICMP
  ) #Windows <string.h>
  check_function_exists(
    _strnicmp
    HAVE__STRNICMP
  ) #Windows <string.h>
  check_function_exists(
    _read
    HAVE__READ
  ) #Windows <io.h>
  check_function_exists(
    _write
    HAVE__WRITE
  ) #Windows <io.h>
else()
  check_function_exists(
    access
    HAVE_ACCESS
  ) #Unix <unistd.h>
  check_function_exists(
    fork
    HAVE_FORK
  ) #Unix <unistd.h>
  check_function_exists(
    getopt
    HAVE_GETOPT
  ) #Unix <unistd.h>
  check_function_exists(
    getpid
    HAVE_GETPID
  ) #Unix <unistd.h>
  check_function_exists(
    getpwent
    HAVE_GETPWENT
  ) #Unix <sys/types.h>,<pwd.h>
  check_function_exists(
    gmtime_r
    HAVE_GMTIME_R
  ) #Unix <time.h>
  check_function_exists(
    localtime_r
    HAVE_LOCALTIME_R
  ) #Unix <time.h>
  check_function_exists(
    mkdir
    HAVE_MKDIR
  ) #Unix <sys/stat.h>,<sys/types.h>
  check_function_exists(
    open
    HAVE_OPEN
  ) #Unix <sys/stat.h>,<sys/types.h>,<fcntl.h>
  check_function_exists(
    nanosleep
    HAVE_NANOSLEEP
  ) #Unix <time.h>
  check_function_exists(
    signal
    HAVE_SIGNAL
  ) #Unix <signal.h>
  check_function_exists(
    stat
    HAVE_STAT
  ) #Unix <sys/stat.h>,<sys/types.h>,<unistd.h>
  check_function_exists(
    fstat
    HAVE_FSTAT
  ) #Unix <sys/stat.h>,<sys/types.h>,<unistd.h>
  check_function_exists(
    strdup
    HAVE_STRDUP
  ) #Unix <string.h>
  check_function_exists(
    strcasecmp
    HAVE_STRCASECMP
  ) #Unix <strings.h>
  check_function_exists(
    strncasecmp
    HAVE_STRNCASECMP
  ) #Unix <strings.h>
  check_function_exists(
    read
    HAVE_READ
  ) #Unix <unistd.h>
  check_function_exists(
    unlink
    HAVE_UNLINK
  ) #Unix <unistd.h>
  check_function_exists(
    usleep
    HAVE_USLEEP
  ) #Unix <unistd.h>
  check_function_exists(
    waitpid
    HAVE_WAITPID
  ) #Unix <sys/types.h>,<sys/wait.h>
  check_function_exists(
    write
    HAVE_WRITE
  ) #Unix <unistd.h>
  if(NOT MINGW)
    check_function_exists(
      alarm
      HAVE_ALARM
    ) #Unix <unistd.h>
  endif()
endif()

check_function_exists(
  backtrace
  HAVE_BACKTRACE
)
check_function_exists(
  iswspace
  HAVE_ISWSPACE
) #Linux <wctype.h>
check_function_exists(
  setenv
  HAVE_SETENV
)
check_function_exists(
  unsetenv
  HAVE_UNSETENV
)
check_function_exists(
  snprintf
  HAVE_SNPRINTF
) #Available with MSVC 2015
#TODO:BUILDSYSTEM:Figure out why check_function_exists fails to find snprintf for MSVC2015
if(MSVC_VERSION GREATER 1899)
  set(HAVE_SNPRINTF true)
endif()

if(NOT DEFINED CMAKE_REQUIRED_LIBRARIES)
  set(CMAKE_REQUIRED_LIBRARIES "")
endif()

include(CheckTypeSize)
check_type_size(
  intptr_t
  SIZEOF_INTPTR_T
)
check_type_size(
  pid_t
  SIZEOF_PID_T
)
check_type_size(
  size_t
  SIZEOF_SIZE_T
)
check_type_size(
  ssize_t
  SIZEOF_SSIZE_T
)
if(WIN32 AND MSVC AND LIBICAL_ENABLE_MSVC_32BIT_TIME_T)
  set(_SAVE_RQD ${CMAKE_REQUIRED_DEFINITIONS})
  set(CMAKE_REQUIRED_DEFINITIONS -D_USE_32BIT_TIME_T)
  check_type_size(
    time_t
    SIZEOF_TIME_T
  )
  set(CMAKE_REQUIRED_DEFINITIONS ${_SAVE_RQD})
else()
  check_type_size(
    time_t
    SIZEOF_TIME_T
  )
endif()
check_type_size(
  __time64_t
  SIZEOF___TIME64_T
)
check_type_size(
  ${ICAL_ICALTIME_T_TYPE}
  SIZEOF_ICALTIME_T
)
check_type_size(
  wint_t
  SIZEOF_WINT_T
)

find_package(Threads)
check_library_exists(
  pthread
  pthread_attr_get_np
  ""
  HAVE_PTHREAD_ATTR_GET_NP
)
check_library_exists(
  pthread
  pthread_getattr_np
  ""
  HAVE_PTHREAD_GETATTR_NP
)
check_library_exists(
  pthread
  pthread_create
  ""
  HAVE_PTHREAD_CREATE
)
check_include_files(
  "pthread.h;pthread_np.h"
  HAVE_PTHREAD_NP_H
)