# Copyright (C) The c-ares project and its contributors

# SPDX-License-Identifier: MIT

CMAKE_MINIMUM_REQUIRED (VERSION 3.5.0)

list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/")

INCLUDE (CheckIncludeFiles)

INCLUDE (CheckTypeSize)

INCLUDE (CheckFunctionExists)

INCLUDE (CheckSymbolExists)

INCLUDE (CheckCSourceCompiles)

INCLUDE (CheckStructHasMember)

INCLUDE (CheckLibraryExists)

PROJECT (c-ares LANGUAGES C VERSION "1.28.1" )

# Set this version before release

SET (CARES_VERSION "${PROJECT_VERSION}")

INCLUDE (GNUInstallDirs) # include this *AFTER* PROJECT(), otherwise paths are wrong.

# This is for libtool compatibility, and specified in a form that is easily

# translatable from libtool (even if the actual form doesn't make sense).

# For instance, in an autotools project, in Makefile.am there is a line that

# contains something like:

# -version-info 4:0:2

# This breaks down into sections of current:revision:age

# This then generates a version of "(current-age).age.revision" with an

# interface version of "(current-age)"

# For example, a version of 4:0:2 would generate output such as:

# libname.so -> libname.so.2

# libname.so.2 -> libname.so.2.2.0

SET (CARES_LIB_VERSIONINFO "15:1:13")

OPTION (CARES_STATIC "Build as a static library" OFF)

OPTION (CARES_SHARED "Build as a shared library" ON)

OPTION (CARES_INSTALL "Create installation targets (chain builders may want to disable this)" ON)

OPTION (CARES_STATIC_PIC "Build the static library as PIC (position independent)" OFF)

OPTION (CARES_BUILD_TESTS "Build and run tests" OFF)

OPTION (CARES_BUILD_CONTAINER_TESTS "Build and run container tests (implies CARES_BUILD_TESTS, Linux only)" OFF)

OPTION (CARES_BUILD_TOOLS "Build tools" ON)

OPTION (CARES_SYMBOL_HIDING "Hide private symbols in shared libraries" OFF)

OPTION (CARES_THREADS "Build with thread-safety support" ON)

SET (CARES_RANDOM_FILE "/dev/urandom" CACHE STRING "Suitable File / Device Path for entropy, such as /dev/urandom")

# Tests require a C++14 compiler

IF (CARES_BUILD_TESTS OR CARES_BUILD_CONTAINER_TESTS)

set(CMAKE_CXX_STANDARD 14)

set(CMAKE_CXX_STANDARD_REQUIRED TRUE)

set(CMAKE_CXX_EXTENSIONS FALSE)

enable_language(CXX)

ENDIF ()

# Tests require static to be enabled on Windows to be able to access otherwise hidden symbols

IF ((CARES_BUILD_TESTS OR CARES_BUILD_CONTAINER_TESTS) AND (NOT CARES_STATIC) AND WIN32)

SET (CARES_STATIC ON)

SET (CARES_STATIC_PIC ON)

MESSAGE (WARNING "Static building was requested be disabled, but re-enabled to support tests")

ENDIF ()

INCLUDE (EnableWarnings)

# allow linking against the static runtime library in msvc

IF (MSVC)

OPTION (CARES_MSVC_STATIC_RUNTIME "Link against the static runtime library" OFF)

IF (CARES_MSVC_STATIC_RUNTIME)

# CMAKE_CONFIGURATION_TYPES is empty on non-IDE generators (Ninja, NMake)

# and that's why we also use CMAKE_BUILD_TYPE to cover for those generators.

# For IDE generators, CMAKE_BUILD_TYPE is usually empty

FOREACH (config_type ${CMAKE_CONFIGURATION_TYPES} ${CMAKE_BUILD_TYPE})

STRING (TOUPPER ${config_type} upper_config_type)

SET (flag_var "CMAKE_C_FLAGS_${upper_config_type}")

IF (${flag_var} MATCHES "/MD")

STRING (REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")

ENDIF ()

ENDFOREACH ()

# clean up

SET (upper_config_type)

SET (config_type)

SET (flag_var)

ENDIF ()

ENDIF ()

IF (CARES_SYMBOL_HIDING)

IF (CMAKE_VERSION VERSION_LESS 3.12)

MESSAGE (FATAL_ERROR "Hiding symbols requires CMake 3.12")

ENDIF ()

CMAKE_POLICY (SET CMP0063 NEW)

ENDIF ()

# Keep build organized, but only if it is the top-level project.

# CMake 3.21 or later has PROJECT_IS_TOP_LEVEL, but we aren't yet depending on

# that version.

IF (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)

SET (CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_INSTALL_BINDIR}")

SET (CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}")

SET (CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}")

SET (CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}")

ENDIF ()

# Destinations for installing different kinds of targets (pass to install command).

SET (TARGETS_INST_DEST

RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}

BUNDLE DESTINATION ${CMAKE_INSTALL_BINDIR}

LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}

ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}

)

# Function in Library

# CHECK_LIBRARY_EXISTS can't be used as it will return true if the function

# is found in a different required/dependent library.

MACRO (CARES_FUNCTION_IN_LIBRARY func lib var)

SET (_ORIG_FIL_CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}")

SET (CMAKE_REQUIRED_LIBRARIES )

CHECK_FUNCTION_EXISTS ("${func}" "_CARES_FUNC_IN_LIB_GLOBAL_${func}")

SET (CMAKE_REQUIRED_LIBRARIES "${_ORIG_FIL_CMAKE_REQUIRED_LIBRARIES}")

IF ("${_CARES_FUNC_IN_LIB_GLOBAL_${func}}")

SET (${var} FALSE)

ELSE ()

CHECK_LIBRARY_EXISTS ("${lib}" "${func}" "" ${var})

ENDIF ()

ENDMACRO ()

# Look for dependent/required libraries

CARES_FUNCTION_IN_LIBRARY (res_servicename resolv HAVE_RES_SERVICENAME_IN_LIBRESOLV)

IF (HAVE_RES_SERVICENAME_IN_LIBRESOLV)

SET (HAVE_LIBRESOLV 1)

ENDIF ()

IF (APPLE)

CHECK_C_SOURCE_COMPILES ("

#include <stdio.h>

#include <TargetConditionals.h>

int main() {

#if TARGET_OS_IPHONE == 0

#error Not an iPhone target

#endif

return 0;

}

"

IOS)

CHECK_C_SOURCE_COMPILES ("

#include <stdio.h>

#include <TargetConditionals.h>

int main() {

#if TARGET_OS_IPHONE == 0 || __IPHONE_OS_VERSION_MIN_REQUIRED < 100000

# error Not iOS v10

#endif

return 0;

}

"

IOS_V10)

CHECK_C_SOURCE_COMPILES ("

#include <stdio.h>

#include <AvailabilityMacros.h>

#ifndef MAC_OS_X_VERSION_10_12

# define MAC_OS_X_VERSION_10_12 101200

#endif

int main() {

#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12

# error Not MacOSX 10.12 or higher

#endif

return 0;

}

"

MACOS_V1012)

ENDIF ()

IF (ZOS AND HAVE_LIBRESOLV)

SET (CARES_USE_LIBRESOLV 1)

ENDIF()

CARES_FUNCTION_IN_LIBRARY (gethostbyname nsl HAVE_LIBNSL)

CARES_FUNCTION_IN_LIBRARY (gethostbyname socket HAVE_GHBN_LIBSOCKET)

CARES_FUNCTION_IN_LIBRARY (gethostbyname network HAVE_LIBNETWORK)

CARES_FUNCTION_IN_LIBRARY (socket socket HAVE_SOCKET_LIBSOCKET)

IF (HAVE_GHBN_LIBSOCKET OR HAVE_SOCKET_LIBSOCKET)

SET(HAVE_LIBSOCKET TRUE)

ENDIF ()

CARES_FUNCTION_IN_LIBRARY (socket network HAVE_LIBNETWORK)

CARES_FUNCTION_IN_LIBRARY (clock_gettime rt HAVE_LIBRT)

# Look for necessary includes

CHECK_INCLUDE_FILES (AvailabilityMacros.h HAVE_AVAILABILITYMACROS_H)

CHECK_INCLUDE_FILES (sys/types.h HAVE_SYS_TYPES_H)

CHECK_INCLUDE_FILES (sys/random.h HAVE_SYS_RANDOM_H)

CHECK_INCLUDE_FILES (sys/socket.h HAVE_SYS_SOCKET_H)

CHECK_INCLUDE_FILES (sys/sockio.h HAVE_SYS_SOCKIO_H)

CHECK_INCLUDE_FILES (arpa/inet.h HAVE_ARPA_INET_H)

CHECK_INCLUDE_FILES (arpa/nameser_compat.h HAVE_ARPA_NAMESER_COMPAT_H)

CHECK_INCLUDE_FILES (arpa/nameser.h HAVE_ARPA_NAMESER_H)

CHECK_INCLUDE_FILES (assert.h HAVE_ASSERT_H)

CHECK_INCLUDE_FILES (errno.h HAVE_ERRNO_H)

CHECK_INCLUDE_FILES (fcntl.h HAVE_FCNTL_H)

CHECK_INCLUDE_FILES (inttypes.h HAVE_INTTYPES_H)

CHECK_INCLUDE_FILES (limits.h HAVE_LIMITS_H)

CHECK_INCLUDE_FILES (malloc.h HAVE_MALLOC_H)

CHECK_INCLUDE_FILES (memory.h HAVE_MEMORY_H)

CHECK_INCLUDE_FILES (netdb.h HAVE_NETDB_H)

CHECK_INCLUDE_FILES (netinet/in.h HAVE_NETINET_IN_H)

CHECK_INCLUDE_FILES (netinet6/in6.h HAVE_NETINET6_IN6_H)

# On old MacOS SDK versions, you must include sys/socket.h before net/if.h

IF (HAVE_SYS_SOCKET_H)

CHECK_INCLUDE_FILES ("sys/socket.h;net/if.h" HAVE_NET_IF_H)

ELSE ()

CHECK_INCLUDE_FILES (net/if.h HAVE_NET_IF_H)

ENDIF ()

CHECK_INCLUDE_FILES (signal.h HAVE_SIGNAL_H)

CHECK_INCLUDE_FILES (socket.h HAVE_SOCKET_H)

CHECK_INCLUDE_FILES (stdbool.h HAVE_STDBOOL_H)

CHECK_INCLUDE_FILES (stdint.h HAVE_STDINT_H)

CHECK_INCLUDE_FILES (stdlib.h HAVE_STDLIB_H)

CHECK_INCLUDE_FILES (strings.h HAVE_STRINGS_H)

CHECK_INCLUDE_FILES (string.h HAVE_STRING_H)

CHECK_INCLUDE_FILES (stropts.h HAVE_STROPTS_H)

CHECK_INCLUDE_FILES (sys/ioctl.h HAVE_SYS_IOCTL_H)

CHECK_INCLUDE_FILES (sys/param.h HAVE_SYS_PARAM_H)

CHECK_INCLUDE_FILES (sys/select.h HAVE_SYS_SELECT_H)

CHECK_INCLUDE_FILES (sys/stat.h HAVE_SYS_STAT_H)

CHECK_INCLUDE_FILES (sys/time.h HAVE_SYS_TIME_H)

CHECK_INCLUDE_FILES (sys/uio.h HAVE_SYS_UIO_H)

CHECK_INCLUDE_FILES (sys/event.h HAVE_SYS_EVENT_H)

CHECK_INCLUDE_FILES (sys/epoll.h HAVE_SYS_EPOLL_H)

CHECK_INCLUDE_FILES (ifaddrs.h HAVE_IFADDRS_H)

CHECK_INCLUDE_FILES (time.h HAVE_TIME_H)

CHECK_INCLUDE_FILES (poll.h HAVE_POLL_H)

CHECK_INCLUDE_FILES (dlfcn.h HAVE_DLFCN_H)

CHECK_INCLUDE_FILES (unistd.h HAVE_UNISTD_H)

# On OpenBSD, you must include sys/types.h before netinet/tcp.h

IF (HAVE_SYS_TYPES_H)

CHECK_INCLUDE_FILES ("sys/types.h;netinet/tcp.h" HAVE_NETINET_TCP_H)

ELSE ()

CHECK_INCLUDE_FILES (netinet/tcp.h HAVE_NETINET_TCP_H)

ENDIF ()

# Include order matters for these windows files.

# As cygwin environment has both socket.h and winsock2.h

# headers check WIN32 not to include the later one here

IF (WIN32)

CHECK_INCLUDE_FILES ("winsock2.h;windows.h" HAVE_WINSOCK2_H)

CHECK_INCLUDE_FILES ("winsock2.h;ws2tcpip.h;windows.h" HAVE_WS2TCPIP_H)

CHECK_INCLUDE_FILES ("winsock2.h;iphlpapi.h;windows.h" HAVE_IPHLPAPI_H)

CHECK_INCLUDE_FILES ("winsock2.h;netioapi.h;windows.h" HAVE_NETIOAPI_H)

CHECK_INCLUDE_FILES ("winsock2.h;mswsock.h;windows.h" HAVE_MSWSOCK_H)

CHECK_INCLUDE_FILES ("winsock.h;windows.h" HAVE_WINSOCK_H)

CHECK_INCLUDE_FILES (windows.h HAVE_WINDOWS_H)

CHECK_INCLUDE_FILES ("windows.h;winternl.h" HAVE_WINTERNL_H)

CHECK_INCLUDE_FILES ("windows.h;ntdef.h" HAVE_NTDEF_H)

CHECK_INCLUDE_FILES ("windows.h;ntdef.h;ntstatus.h" HAVE_NTSTATUS_H)

ENDIF ()

# Set system-specific compiler flags

IF (CMAKE_SYSTEM_NAME STREQUAL "Darwin")

LIST (APPEND SYSFLAGS -D_DARWIN_C_SOURCE)

ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "Linux")

LIST (APPEND SYSFLAGS -D_GNU_SOURCE -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700)

ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "SunOS")

LIST (APPEND SYSFLAGS -D__EXTENSIONS__ -D_REENTRANT -D_XOPEN_SOURCE=700)

ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "AIX")

LIST (APPEND SYSFLAGS -D_ALL_SOURCE -D_XOPEN_SOURCE=700 -D_USE_IRS)

ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")

# Don't define _XOPEN_SOURCE on FreeBSD, it actually reduces visibility instead of increasing it

ELSEIF (WIN32)

LIST (APPEND SYSFLAGS -DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE -D_WIN32_WINNT=0x0602)

ENDIF ()

ADD_DEFINITIONS(${SYSFLAGS})

# Tell C-Ares about libraries to depend on

IF (HAVE_LIBRESOLV)

LIST (APPEND CARES_DEPENDENT_LIBS resolv)

ENDIF ()

IF (HAVE_LIBNSL)

LIST (APPEND CARES_DEPENDENT_LIBS nsl)

ENDIF ()

IF (HAVE_LIBSOCKET)

LIST (APPEND CARES_DEPENDENT_LIBS socket)

ENDIF ()

IF (HAVE_LIBNETWORK)

LIST (APPEND CARES_DEPENDENT_LIBS network)

ENDIF ()

IF (HAVE_LIBRT)

LIST (APPEND CARES_DEPENDENT_LIBS rt)

ENDIF ()

IF (WIN32)

LIST (APPEND CARES_DEPENDENT_LIBS ws2_32 advapi32 iphlpapi)

ENDIF ()

# When checking for symbols, we need to make sure we set the proper

# headers, libraries, and definitions for the detection to work properly

# CMAKE_REQUIRED_DEFINITIONS, CMAKE_REQUIRED_LIBRARIES, and

# CMAKE_EXTRA_INCLUDE_FILES. When we're done with the detection, we'll

# restore them to their original values (otherwise a parent project

# that tries to set these won't be maintained, see Issue #729)

SET (ORIG_CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEEFINITIONS})

SET (ORIG_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})

SET (ORIG_CMAKE_EXTRA_INCLUDE_FILES ${CMAKE_EXTRA_INCLUDE_FILES})

SET (CMAKE_REQUIRED_DEFINITIONS ${SYSFLAGS})

LIST (APPEND CMAKE_REQUIRED_LIBRARIES ${CARES_DEPENDENT_LIBS})

MACRO (CARES_EXTRAINCLUDE_IFSET var include)

IF (${var})

LIST (APPEND CMAKE_EXTRA_INCLUDE_FILES ${include})

ENDIF ()

ENDMACRO ()

CARES_EXTRAINCLUDE_IFSET (HAVE_AVAILABILITYMACROS_H AvailabilityMacros.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_STDBOOL_H stdbool.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_TYPES_H sys/types.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_ARPA_INET_H arpa/inet.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_ARPA_NAMESER_H arpa/nameser.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_NETDB_H netdb.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_NET_IF_H net/if.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_IFADDRS_H ifaddrs.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_NETINET_IN_H netinet/in.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_NETINET6_IN6_H netinet6/in6.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_NETINET_TCP_H netinet/tcp.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SIGNAL_H signal.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_STDLIB_H stdlib.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_STRING_H string.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_STRINGS_H strings.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_IOCTL_H sys/ioctl.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_RANDOM_H sys/random.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_SELECT_H sys/select.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_SOCKET_H sys/socket.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_SOCKIO_H sys/sockio.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_TIME_H sys/time.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_STAT_H sys/stat.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_UIO_H sys/uio.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_EVENT_H sys/event.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_EPOLL_H sys/epoll.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_TIME_H time.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_POLL_H poll.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_FCNTL_H fcntl.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_UNISTD_H unistd.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_WINSOCK2_H winsock2.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_WS2TCPIP_H ws2tcpip.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_IPHLPAPI_H iphlpapi.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_WINDOWS_H windows.h)

# Check Types

# CHECK_TYPE_SIZE can't be used to see if a type exists because on Apple when

# building multi-arch, it will throw an error. So we need to wrap

# CHECK_C_SOURCE_COMPILES for our tests.

MACRO (CARES_TYPE_EXISTS type var)

SET(_CARES_C_SOURCE "

#include <stdio.h>

#include <stdlib.h>

")

FOREACH(_C_HEADER ${CMAKE_EXTRA_INCLUDE_FILES})

SET(_CARES_C_SOURCE "${_CARES_C_SOURCE}

#include <${_C_HEADER}>")

ENDFOREACH(_C_HEADER)

SET(_CARES_C_SOURCE "${_CARES_C_SOURCE}

int main() {

${type} var_exists;

(void)var_exists;

return 0;

}

")

CHECK_C_SOURCE_COMPILES ("${_CARES_C_SOURCE}" ${var})

ENDMACRO ()

CARES_TYPE_EXISTS (socklen_t HAVE_SOCKLEN_T)

CARES_TYPE_EXISTS (SOCKET HAVE_TYPE_SOCKET)

CARES_TYPE_EXISTS (ssize_t HAVE_SSIZE_T)

CARES_TYPE_EXISTS ("long long" HAVE_LONGLONG)

CARES_TYPE_EXISTS ("struct addrinfo" HAVE_STRUCT_ADDRINFO)

CARES_TYPE_EXISTS ("struct in6_addr" HAVE_STRUCT_IN6_ADDR)

CARES_TYPE_EXISTS ("struct sockaddr_in6" HAVE_STRUCT_SOCKADDR_IN6)

CARES_TYPE_EXISTS ("struct sockaddr_storage" HAVE_STRUCT_SOCKADDR_STORAGE)

CARES_TYPE_EXISTS ("struct timeval" HAVE_STRUCT_TIMEVAL)

# Check for preprocessor defines

CHECK_SYMBOL_EXISTS (AF_INET6 "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_AF_INET6)

CHECK_SYMBOL_EXISTS (O_NONBLOCK "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_O_NONBLOCK)

CHECK_SYMBOL_EXISTS (FIONBIO "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_FIONBIO)

CHECK_SYMBOL_EXISTS (SIOCGIFADDR "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IOCTL_SIOCGIFADDR)

CHECK_SYMBOL_EXISTS (MSG_NOSIGNAL "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_MSG_NOSIGNAL)

CHECK_SYMBOL_EXISTS (PF_INET6 "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_PF_INET6)

CHECK_SYMBOL_EXISTS (SO_NONBLOCK "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SO_NONBLOCK)

# XCode v8 bug: iOS when targeting less than v10, or MacOS when targeting less than v10.12 will

# say clock_gettime exists, it is a weak symbol that only exists in iOS10/MacOS10.12 and will

# cause a crash at runtime when running on older versions. Skip finding CLOCK_MONOTONIC on older

# OS's.

IF ((NOT APPLE) OR IOS_V10 OR MACOS_V1012)

CHECK_SYMBOL_EXISTS (CLOCK_MONOTONIC "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CLOCK_GETTIME_MONOTONIC)

ENDIF ()

CHECK_STRUCT_HAS_MEMBER("struct sockaddr_in6" sin6_scope_id "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID LANGUAGE C)

CHECK_SYMBOL_EXISTS (closesocket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CLOSESOCKET)

CHECK_SYMBOL_EXISTS (CloseSocket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CLOSESOCKET_CAMEL)

CHECK_SYMBOL_EXISTS (connect "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CONNECT)

CHECK_SYMBOL_EXISTS (fcntl "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_FCNTL)

CHECK_SYMBOL_EXISTS (freeaddrinfo "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_FREEADDRINFO)

CHECK_SYMBOL_EXISTS (getaddrinfo "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETADDRINFO)

CHECK_SYMBOL_EXISTS (getenv "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETENV)

CHECK_SYMBOL_EXISTS (gethostname "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETHOSTNAME)

CHECK_SYMBOL_EXISTS (getnameinfo "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETNAMEINFO)

CHECK_SYMBOL_EXISTS (getrandom "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETRANDOM)

CHECK_SYMBOL_EXISTS (getservbyport_r "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETSERVBYPORT_R)

CHECK_SYMBOL_EXISTS (getservbyname_r "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETSERVBYNAME_R)

CHECK_SYMBOL_EXISTS (gettimeofday "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETTIMEOFDAY)

CHECK_SYMBOL_EXISTS (if_indextoname "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IF_INDEXTONAME)

CHECK_SYMBOL_EXISTS (if_nametoindex "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IF_NAMETOINDEX)

CHECK_SYMBOL_EXISTS (ConvertInterfaceIndexToLuid "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CONVERTINTERFACEINDEXTOLUID)

CHECK_SYMBOL_EXISTS (ConvertInterfaceLuidToNameA "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_CONVERTINTERFACELUIDTONAMEA)

CHECK_SYMBOL_EXISTS (inet_net_pton "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_INET_NET_PTON)

IF (NOT WIN32)

# Disabled on Windows, because these functions are only really supported on Windows

# Vista or newer (_WIN32_WINNT >= 0x0600). Older versions of Windows may provide

# them as experimental non-working features, so we have to disable them manually.

CHECK_SYMBOL_EXISTS (inet_ntop "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_INET_NTOP)

CHECK_SYMBOL_EXISTS (inet_pton "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_INET_PTON)

ENDIF ()

CHECK_SYMBOL_EXISTS (ioctl "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IOCTL)

CHECK_SYMBOL_EXISTS (ioctlsocket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IOCTLSOCKET)

CHECK_SYMBOL_EXISTS (IoctlSocket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_IOCTLSOCKET_CAMEL)

CHECK_SYMBOL_EXISTS (recv "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_RECV)

CHECK_SYMBOL_EXISTS (recvfrom "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_RECVFROM)

CHECK_SYMBOL_EXISTS (send "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SEND)

CHECK_SYMBOL_EXISTS (setsockopt "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SETSOCKOPT)

CHECK_SYMBOL_EXISTS (socket "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKET)

CHECK_SYMBOL_EXISTS (strcasecmp "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRCASECMP)

CHECK_SYMBOL_EXISTS (strcmpi "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRCMPI)

CHECK_SYMBOL_EXISTS (strdup "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRDUP)

CHECK_SYMBOL_EXISTS (stricmp "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRICMP)

CHECK_SYMBOL_EXISTS (strncasecmp "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRNCASECMP)

CHECK_SYMBOL_EXISTS (strncmpi "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRNCMPI)

CHECK_SYMBOL_EXISTS (strnicmp "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STRNICMP)

CHECK_SYMBOL_EXISTS (writev "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_WRITEV)

CHECK_SYMBOL_EXISTS (arc4random_buf "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_ARC4RANDOM_BUF)

CHECK_SYMBOL_EXISTS (stat "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_STAT)

CHECK_SYMBOL_EXISTS (getifaddrs "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETIFADDRS)

CHECK_SYMBOL_EXISTS (poll "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_POLL)

CHECK_SYMBOL_EXISTS (pipe "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_PIPE)

CHECK_SYMBOL_EXISTS (pipe2 "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_PIPE2)

CHECK_SYMBOL_EXISTS (kqueue "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_KQUEUE)

CHECK_SYMBOL_EXISTS (epoll_create1 "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_EPOLL)

# On Android, the system headers may define __system_property_get(), but excluded

# from libc. We need to perform a link test instead of a header/symbol test.

CHECK_FUNCTION_EXISTS (__system_property_get HAVE___SYSTEM_PROPERTY_GET)

# Restore original values (as per Issue #729)

SET (CMAKE_REQUIRED_DEFINITIONS ${ORIG_CMAKE_REQUIRED_DEEFINITIONS})

SET (CMAKE_REQUIRED_LIBRARIES ${ORIG_CMAKE_REQUIRED_LIBRARIES})

SET (CMAKE_EXTRA_INCLUDE_FILES ${ORIG_CMAKE_EXTRA_INCLUDE_FILES})

################################################################################

# Threading Support

#

IF (CARES_THREADS)

IF (WIN32)

# Do nothing, always has threads

ELSE ()

# Need to prefer pthreads on platforms that may have more threading choices

# (e.g. Solaris)

SET (CMAKE_THREAD_PREFER_PTHREAD TRUE)

FIND_PACKAGE (Threads)

IF (Threads_FOUND)

# Fix solaris9 bug due to libc having pthread_create() stubs that always fail. CMake

# doesn't realize that the real pthread functions aren't in libc, so sets the pthread

# library CAKE_THREAD_LIBS_INIT variable to blank instead of to the correct "-lpthread".

IF (CMAKE_SYSTEM_NAME STREQUAL "SunOS" AND NOT CMAKE_THREAD_LIBS_INIT)

SET (CMAKE_THREAD_LIBS_INIT "-lpthread")

ENDIF ()

# PThread functions.

CHECK_INCLUDE_FILES (pthread.h HAVE_PTHREAD_H)

CHECK_INCLUDE_FILES (pthread_np.h HAVE_PTHREAD_NP_H)

CARES_EXTRAINCLUDE_IFSET (HAVE_PTHREAD_H pthread.h)

CARES_EXTRAINCLUDE_IFSET (HAVE_PTHREAD_NP_H pthread_np.h)

CHECK_SYMBOL_EXISTS (pthread_init "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_PTHREAD_INIT)

# Make sure libcares.pc.cmake knows about thread libraries on static builds

LIST (APPEND CARES_DEPENDENT_LIBS ${CMAKE_THREAD_LIBS_INIT})

ELSE ()

MESSAGE (WARNING "Threading support not found, disabling...")

SET (CARES_THREADS OFF)

ENDIF ()

ENDIF ()

ENDIF ()

################################################################################

# recv, recvfrom, send, getnameinfo, gethostname

# ARGUMENTS AND RETURN VALUES

#

# The AutoTools build tries to be really thorough here. So much so that it

# takes forever. We really don't want to do that. Lets make some educated

# guesses based on datatypes we have available, and for others, use some 'sane'

# defaults. This should be much quicker and nearly as accurate ... and even

# if not, it probably won't matter in the least.

IF (HAVE_SSIZE_T AND HAVE_SOCKLEN_T AND NOT WIN32)

# If we have ssize_t and socklen_t, the API is usually sane and uses ssize_t and size_t for lengths

SET (RECVFROM_TYPE_RETV ssize_t)

SET (RECVFROM_TYPE_ARG3 size_t)

ELSE ()

SET (RECVFROM_TYPE_RETV int)

SET (RECVFROM_TYPE_ARG3 int)

ENDIF ()

IF (HAVE_TYPE_SOCKET)

# If the SOCKET type is defined, it uses socket ... should be windows only

SET (RECVFROM_TYPE_ARG1 SOCKET)

ELSE ()

SET (RECVFROM_TYPE_ARG1 int)

ENDIF()

IF (HAVE_SOCKLEN_T)

# If we have socklen_t the APIs pretty much always actually use it

SET (RECVFROM_TYPE_ARG6 "socklen_t *")

SET (GETNAMEINFO_TYPE_ARG2 socklen_t)

SET (GETNAMEINFO_TYPE_ARG46 socklen_t)

ELSE ()

SET (RECVFROM_TYPE_ARG6 "int *")

SET (GETNAMEINFO_TYPE_ARG2 int)

SET (GETNAMEINFO_TYPE_ARG46 int)

ENDIF ()

IF (WIN32)

SET (RECV_TYPE_ARG2 "char *")

ELSE ()

SET (RECV_TYPE_ARG2 "void *")

ENDIF ()

# Functions are typically consistent so the equivalent fields map ... equivalently

SET (RECV_TYPE_RETV ${RECVFROM_TYPE_RETV})

SET (SEND_TYPE_RETV ${RECVFROM_TYPE_RETV})

SET (RECV_TYPE_ARG1 ${RECVFROM_TYPE_ARG1})

SET (RECVFROM_TYPE_ARG2 ${RECV_TYPE_ARG2})

SET (SEND_TYPE_ARG1 ${RECVFROM_TYPE_ARG1})

SET (RECV_TYPE_ARG3 ${RECVFROM_TYPE_ARG3})

SET (SEND_TYPE_ARG3 ${RECVFROM_TYPE_ARG3})

SET (GETHOSTNAME_TYPE_ARG2 ${RECVFROM_TYPE_ARG3})

# These should always be "sane" values to use always

SET (RECVFROM_QUAL_ARG5 )

SET (RECVFROM_TYPE_ARG4 int)

SET (RECVFROM_TYPE_ARG5 "struct sockaddr *")

SET (RECV_TYPE_ARG4 int)

SET (GETNAMEINFO_TYPE_ARG1 "struct sockaddr *")

SET (GETNAMEINFO_TYPE_ARG7 int)

SET (SEND_TYPE_ARG2 "void *")

SET (SEND_TYPE_ARG4 int)

################################################################################

# HAVE_CXX11 ??

# HAVE_SIG_ATOMIC_T_VOLATILE ??

# Set a few variables by hand that C-Ares wants, logically, based on detection

# data.

IF (HAVE_SOCKLEN_T)

Set (CARES_TYPEOF_ARES_SOCKLEN_T "socklen_t")

ELSE ()

Set (CARES_TYPEOF_ARES_SOCKLEN_T "int")

ENDIF ()

IF (HAVE_SSIZE_T)

Set (CARES_TYPEOF_ARES_SSIZE_T "ssize_t")

ELSE ()

IF (WIN32)

IF ("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")

Set (CARES_TYPEOF_ARES_SSIZE_T "__int64")

ELSE ()

Set (CARES_TYPEOF_ARES_SSIZE_T "int")

ENDIF ()

ELSE ()

Set (CARES_TYPEOF_ARES_SSIZE_T "long")

ENDIF ()

ENDIF ()

IF (HAVE_FCNTL AND HAVE_O_NONBLOCK)

SET (HAVE_FCNTL_O_NONBLOCK 1)

ENDIF ()

IF (HAVE_IOCTL AND HAVE_FIONBIO)

SET (HAVE_IOCTL_FIONBIO 1)

ENDIF ()

IF (HAVE_IOCTLSOCKET AND HAVE_FIONBIO)

SET (HAVE_IOCTLSOCKET_FIONBIO 1)

ENDIF ()

IF (HAVE_IOCTLSOCKET_CAMEL AND HAVE_FIONBIO)

SET (HAVE_IOCTLSOCKET_CAMEL_FIONBIO 1)

ENDIF ()

IF (HAVE_GETADDRINFO)

IF (CMAKE_SYSTEM_NAME STREQUAL "Darwin" OR

CMAKE_SYSTEM_NAME STREQUAL "HPUX" OR

CMAKE_SYSTEM_NAME STREQUAL "NetBSD" OR

CMAKE_SYSTEM_NAME STREQUAL "SunOS" OR

CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR

CMAKE_SYSTEM_NAME STREQUAL "AIX" OR

WIN32)

SET (HAVE_GETADDRINFO_THREADSAFE 1)

ENDIF ()

ENDIF ()

IF (HAVE_TIME_H AND HAVE_SYS_TIME_H)

SET (TIME_WITH_SYS_TIME 1)

ENDIF ()

IF (HAVE_GETSERVBYPORT_R)

# TODO : Should probably autodetect

IF (CMAKE_SYSTEM_NAME STREQUAL "SunOS")

SET (GETSERVBYPORT_R_ARGS 5)

ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "AIX" OR

CMAKE_SYSTEM_NAME STREQUAL "OpenBSD" OR

HAIKU)

SET (GETSERVBYPORT_R_ARGS 4)

ELSE ()

# Probably linux

SET (GETSERVBYPORT_R_ARGS 6)

ENDIF ()

ENDIF ()

IF (HAVE_GETSERVBYNAME_R)

# TODO : Should probably autodetect

IF (CMAKE_SYSTEM_NAME STREQUAL "SunOS")

SET (GETSERVBYNAME_R_ARGS 5)

ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "AIX" OR

CMAKE_SYSTEM_NAME STREQUAL "OpenBSD" OR

HAIKU)

SET (GETSERVBYNAME_R_ARGS 4)

ELSE ()

# Probably linux

SET (GETSERVBYNAME_R_ARGS 6)

ENDIF ()

ENDIF ()

# Set some aliases used for ares_build.h

IF (HAVE_SYS_TYPES_H)

SET (CARES_HAVE_SYS_TYPES_H 1)

ENDIF ()

IF (HAVE_SYS_SOCKET_H)

SET (CARES_HAVE_SYS_SOCKET_H 1)

ENDIF()

IF (HAVE_WS2TCPIP_H)

SET (CARES_HAVE_WS2TCPIP_H 1)

ENDIF()

IF (HAVE_WINSOCK2_H)

SET (CARES_HAVE_WINSOCK2_H 1)

ENDIF()

IF (HAVE_WINDOWS_H)

SET (CARES_HAVE_WINDOWS_H 1)

ENDIF()

IF (HAVE_ARPA_NAMESER_H)

SET (CARES_HAVE_ARPA_NAMESER_H 1)

ENDIF()

IF (HAVE_ARPA_NAMESER_COMPAT_H)

SET (CARES_HAVE_ARPA_NAMESER_COMPAT_H 1)

ENDIF()

# TRANSFORM_MAKEFILE_INC

#

# This function consumes the "Makefile.inc" autotools file, and converts it into

# "Makefile.inc.cmake", a cmake include file; transforming this:

#

# CSOURCES = ares__close_sockets.c \

# ares__get_hostent.c \

# ares__read_line.c \

# ...

#

# into this:

#

# SET (CSOURCES

# ares__close_sockets.c

# ares__get_hostent.c

# ares__read_line.c

# ...

function(TRANSFORM_MAKEFILE_INC INPUT_FILE OUTPUT_FILE)

file(READ ${INPUT_FILE} MAKEFILE_INC_TEXT)

string(REPLACE "$(top_srcdir)" "\${PROJECT_SOURCE_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})

string(REPLACE "$(top_builddir)" "\${PROJECT_BINARY_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})

string(REGEX REPLACE "\\\\\n" "ß!ß" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})

string(REGEX REPLACE "([a-zA-Z_][a-zA-Z0-9_]*)[\t ]*=[\t ]*([^\n]*)" "SET(\\1 \\2)" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})

string(REPLACE "ß!ß" "\n" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})

string(REGEX REPLACE "\\$\\(([a-zA-Z_][a-zA-Z0-9_]*)\\)" "\${\\1}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT}) # Replace $() with ${}

string(REGEX REPLACE "@([a-zA-Z_][a-zA-Z0-9_]*)@" "\${\\1}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT}) # Replace @@ with ${}, even if that may not be read by CMake scripts.

file(WRITE ${OUTPUT_FILE} ${MAKEFILE_INC_TEXT})

endfunction()

# Directory for includes

ADD_SUBDIRECTORY (include)

# Directory for lib and tools

ADD_SUBDIRECTORY (src)

# Docs

ADD_SUBDIRECTORY (docs)

# Tests

IF (CARES_BUILD_TESTS OR CARES_BUILD_CONTAINER_TESTS)

ENABLE_TESTING ()

ADD_SUBDIRECTORY (test)

ENDIF ()

# Export targets

IF (CARES_INSTALL)

SET (CMAKECONFIG_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")

INCLUDE (CMakePackageConfigHelpers)

CONFIGURE_PACKAGE_CONFIG_FILE (${PROJECT_NAME}-config.cmake.in ${PROJECT_NAME}-config.cmake

INSTALL_DESTINATION ${CMAKECONFIG_INSTALL_DIR}

PATH_VARS CMAKE_INSTALL_INCLUDEDIR

NO_CHECK_REQUIRED_COMPONENTS_MACRO

)

WRITE_BASIC_PACKAGE_VERSION_FILE(${PROJECT_NAME}-config-version.cmake VERSION "${CARES_VERSION}" COMPATIBILITY SameMajorVersion)

INSTALL (EXPORT ${PROJECT_NAME}-targets COMPONENT Devel DESTINATION ${CMAKECONFIG_INSTALL_DIR} NAMESPACE ${PROJECT_NAME}::)

INSTALL (FILES "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}-config.cmake" "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake" COMPONENT Devel DESTINATION ${CMAKECONFIG_INSTALL_DIR})

# pkgconfig support

IF (NOT CARES_SHARED)

FOREACH (LIB ${CARES_DEPENDENT_LIBS})

SET (CARES_PRIVATE_LIBS "${CARES_PRIVATE_LIBS} -l${LIB}")

ENDFOREACH ()

ENDIF ()

CONFIGURE_FILE("libcares.pc.cmake" "libcares.pc" @ONLY)

INSTALL (FILES "${CMAKE_CURRENT_BINARY_DIR}/libcares.pc" COMPONENT Devel DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")

ENDIF ()

# Legacy chain-building variables (provided for compatibility with old code).

# Don't use these, external code should be updated to refer to the aliases directly (e.g., Cares::cares).

SET (CARES_FOUND 1 CACHE INTERNAL "CARES LIBRARY FOUND")

SET (CARES_LIBRARIES ${PROJECT_NAME}::cares CACHE INTERNAL "CARES LIBRARIES")

IF (CARES_INSTALL)

# Package creation

set( CPACK_PACKAGE_NAME ${PROJECT_NAME} )

set( CPACK_PACKAGE_VENDOR "Daniel Stenberg" ) # Github project owner

set( CPACK_PACKAGE_DESCRIPTION_SUMMARY "A C library for asynchronous DNS requests" )

set( CPACK_PACKAGE_HOMEPAGE_URL "https://c-ares.org/" )

set( CPACK_PACKAGE_CONTACT "https://c-ares.org/" )

set( CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR} )

set( CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR} )

set( CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH} )

set( CPACK_PACKAGE_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH} )

set( CPACK_PACKAGE_INSTALL_DIRECTORY ${PROJECT_NAME} )

set( CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.md" )

set( CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_SOURCE_DIR}/README.md" )

set( CPACK_COMPONENT_Library_DISPLAY_NAME "c-ares Library" )

set( CPACK_COMPONENT_Library_DESCRIPTION "The c-ares binary library." )

set( CPACK_COMPONENT_Library_REQUIRED 1 )

set( CPACK_COMPONENT_Devel_DISPLAY_NAME "c-ares Development Files" )

set( CPACK_COMPONENT_Devel_DESCRIPTION "Development files for compiling against c-ares." )

set( CPACK_COMPONENT_Devel_REQUIRED 0 )

IF (CARES_BUILD_TOOLS)

set( CPACK_COMPONENT_Tools_DISPLAY_NAME "c-ares Tools" )

set( CPACK_COMPONENT_Tools_DESCRIPTION "Tools for using c-ares." )

set( CPACK_COMPONENT_Tools_REQUIRED 0 )

ENDIF ()

if( ${CMAKE_SYSTEM_NAME} STREQUAL "Linux" )

if ( "${CPACK_PACKAGE_ARCHITECTURE}" STREQUAL "" )

set( CPACK_PACKAGE_ARCHITECTURE "${CMAKE_SYSTEM_PROCESSOR}" )

endif()

if ( "${CPACK_PACKAGE_ARCHITECTURE}" STREQUAL "" )

if ( "${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "Windows" )

message( FATAL_ERROR "Failed to determine CPACK_PACKAGE_ARCHITECTURE. Is CMAKE_SYSTEM_PROCESSOR set?" )

endif()

# Note: the architecture should default to the local architecture, but it

# in fact comes up empty. We call `uname -m` to ask the kernel instead.

EXECUTE_PROCESS( COMMAND uname -m COMMAND tr -d '\n' OUTPUT_VARIABLE CPACK_PACKAGE_ARCHITECTURE )

endif()

set( CPACK_INCLUDE_TOPLEVEL_DIRECTORY 1 )

set( CPACK_PACKAGE_RELEASE 1 )

# RPM - https://cmake.org/cmake/help/latest/cpack_gen/rpm.html

set( CPACK_RPM_PACKAGE_RELEASE ${CPACK_PACKAGE_RELEASE} )

set( CPACK_RPM_PACKAGE_ARCHITECTURE ${CPACK_PACKAGE_ARCHITECTURE} )

set( CPACK_RPM_PACKAGE_DESCRIPTION ${CPACK_PACKAGE_DESCRIPTION_SUMMARY} )

set( CPACK_RPM_PACKAGE_URL ${CPACK_PACKAGE_HOMEPAGE_URL} )

set( CPACK_RPM_PACKAGE_LICENSE "MIT" )

set( CPACK_RPM_COMPONENT_INSTALL 1 )

set( CPACK_RPM_COMPRESSION_TYPE "xz" )

set( CPACK_RPM_PACKAGE_AUTOPROV 1 )

set( CPACK_RPM_Library_PACKAGE_SUMMARY ${CPACK_COMPONENT_Library_DESCRIPTION} )

set( CPACK_RPM_Library_PACKAGE_ARCHITECTURE ${CPACK_RPM_PACKAGE_ARCHITECTURE} )

set( CPACK_RPM_Library_PACKAGE_NAME "libcares${CARES_LIB_VERSION_MAJOR}" )

set( CPACK_RPM_Library_FILE_NAME "RPM-DEFAULT" )

set( CPACK_RPM_Devel_PACKAGE_REQUIRES "cmake >= ${CMAKE_MINIMUM_REQUIRED_VERSION}, ${CPACK_RPM_Library_PACKAGE_NAME} >= ${CPACK_PACKAGE_VERSION}" )

set( CPACK_RPM_Devel_PACKAGE_SUMMARY ${CPACK_COMPONENT_Devel_DESCRIPTION} )

set( CPACK_RPM_Devel_PACKAGE_ARCHITECTURE ${CPACK_RPM_PACKAGE_ARCHITECTURE} )

set( CPACK_RPM_Devel_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-devel" )

set( CPACK_RPM_Devel_FILE_NAME "RPM-DEFAULT" )

IF (CARES_BUILD_TOOLS)

set( CPACK_RPM_Tools_PACKAGE_REQUIRES "${CPACK_RPM_Library_PACKAGE_NAME} >= ${CPACK_PACKAGE_VERSION}" )

set( CPACK_RPM_Tools_PACKAGE_SUMMARY ${CPACK_COMPONENT_Tools_DESCRIPTION} )

set( CPACK_RPM_Tools_PACKAGE_ARCHITECTURE ${CPACK_RPM_PACKAGE_ARCHITECTURE} )

set( CPACK_RPM_Tools_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-tools" )

set( CPACK_RPM_Tools_FILE_NAME "RPM-DEFAULT" )

ENDIF ()

# DEB - https://cmake.org/cmake/help/latest/cpack_gen/deb.html

set( CPACK_DEBIAN_PACKAGE_RELEASE ${CPACK_PACKAGE_RELEASE} )

set( CPACK_DEBIAN_PACKAGE_HOMEPAGE ${CPACK_PACKAGE_HOMEPAGE_URL} )

set( CPACK_DEB_COMPONENT_INSTALL 1 )

set( CPACK_DEBIAN_COMPRESSION_TYPE "xz")

set( CPACK_DEBIAN_PACKAGE_SHLIBDEPS 1 )

if ( ${CPACK_PACKAGE_ARCHITECTURE} STREQUAL "x86_64" )

set( CPACK_DEBIAN_PACKAGE_ARCHITECTURE "amd64" ) # DEB doesn't always use the kernel's arch name

else()

set( CPACK_DEBIAN_PACKAGE_ARCHITECTURE ${CPACK_PACKAGE_ARCHITECTURE} )

endif()

set( CPACK_DEBIAN_FILE_NAME "DEB-DEFAULT" ) # Use default naming scheme

set( CPACK_DEBIAN_LIBRARY_PACKAGE_NAME ${CPACK_RPM_Library_PACKAGE_NAME} )

set( CPACK_DEBIAN_DEVEL_PACKAGE_DEPENDS "cmake (>= ${CMAKE_MINIMUM_REQUIRED_VERSION}), ${CPACK_DEBIAN_LIBRARY_PACKAGE_NAME} (>= ${CPACK_PACKAGE_VERSION})" )

set( CPACK_DEBIAN_DEVEL_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-dev" )

IF (CARES_BUILD_TOOLS)

set( CPACK_DEBIAN_TOOLS_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-tools" )

set( CPACK_DEBIAN_TOOLS_PACKAGE_SHLIBDEPS OFF ) # dpkg-shlibdeps can't find the libs we built

set( CPACK_DEBIAN_TOOLS_PACKAGE_DEPENDS "${CPACK_DEBIAN_LIBRARY_PACKAGE_NAME} (>= ${CPACK_PACKAGE_VERSION})" )

ENDIF ()

elseif( ${CMAKE_HOST_WIN32} )

set( CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL ON )

set( CPACK_NSIS_DISPLAY_NAME ${PROJECT_NAME} )

set( CPACK_NSIS_PACKAGE_NAME ${PROJECT_NAME} )

set( CPACK_NSIS_URL_INFO_ABOUT ${CPACK_PACKAGE_HOMEPAGE_URL} )

endif()

# This must always be last!

include( CPack )

ENDIF ()