I've attached v2 of my CMake patch for c-ares. The changes are:
* Sync with master (no configure-time type size checks)
* Support iOS multi-arch building
* Require only CMake v2.8
The main thing that still needs to be done is to build the tests,
however I'm not seeing how to do that with CMake 2.8 as was requested
since it doesn't have C++11 support (needed to set the right flags
during compilation). Even with later CMake versions, I'm not exactly
sure how to detect a C++11 compiler ... so it will take quite a bit of
research. (It doesn't help that I'm a C guy and try not to touch C++).
That said, I don't know if that is a show-stopper for an experimental
build system distributed in parallel with the primary autotools build
system.
-Brad
On 6/28/16 8:42 AM, Brad House wrote:
I've just confirmed CMake 2.8 (tested 2.8.12.2 on Ubuntu 14.04) works fine,
it doesn't appear I'm depending on any v3 features, so it is safe to reduce
the minimum version.
-Brad
On 6/28/16 7:56 AM, Brad House via c-ares wrote:
Commenting below ...
On 6/28/16 6:42 AM, David Drysdale via c-ares wrote:
Hi Brad,
This seems to run pretty well -- as you say, it's vastly faster than
the ./configure variant!
:)
My main concern would be that having 2 parallel build systems adds a
bit more friction to the development process (e.g. anyone adding a new
source code file needs to remember to update/test both), and we don't
necessarily have any folk knowledgeable about CMake. However, given
that c-ares is pretty stable, that might not be a big issue,
particularly if we document that the autotools variant is the
"official" build system.
I agree, I couldn't figure out any way to make use of the Makefile.inc
which lists the source files, which would have been convenient. Since
C-Ares releases only happen once every couple of years, I can definitely
make sure I do any regression testing across the platforms I have access
to prior to release to look for anything that might have broken.
Technically there is another build system too, the Windows "NMake" files,
but autotools and windows nmake are able to share the Makefile.inc for
the list of sources.
One thing to help would be to set up automatic builds -- if we set up
Travis / AppVeyor build variants for CMake, we should be able to
quickly spot any omissions. Obviously, including the tests in the
CMake setup would ideally be needed, and there's a few other things
that might need tweaking:
Hooking into Travis sounds like a good idea. I need to wrap my head
around the test system to figure out how to integrate that still.
- Your patch requires CMake 3.0, which is later than is installed at
Travis (which has 2.8.7 I think). Do you need 3.x features, or could
you set a lower minimum version?
I'll need to test to see if there was really any reason to require
CMake v3 or not. I know we found a reason in some other projects, but
I think it was behavior of FindPackage(OpenSSL) that was broken until
v3... obviously not relevant here.
- The CMake build seems to assume use of the main source code
directory, but I've seen other CMake builds that allow parallel build
subdirectories. If the latter is possible, it might allow an autoconf
build and a CMake build to use a shared source tree, reducing the size
of the Travis build matrix.
Actually, that's not true. I never build using cmake in the main source
tree. I typically do something like:
cd c-ares
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=DEBUG -DCARES_STATIC=ON -DCARES_STATIC_PIC=ON ..
make
...
However, I haven't seen what would happen if the autoconf version ran
in the source tree and CMake ran outside. I can't guarantee it would
reference the right ares_config.h/ares_build.h files. It *should* since
it sets the include path of the build directory first.
- For tidiness it would be nice to update .gitignore to list any
CMake build detritus.
We could, but I typically wouldn't recommend building in the source
directory anyhow Its not like autoconf that has to run ./buildconf
to generate a bunch of files before ./configure can run so I'm not
sure if it makes sense to add any exclusions.
A couple of other questions (from a CMake n00b):
- Where does SOVERSION of 3.0.1 come from?
I extracted that from the autotools Makefile.am:
CARES_VERSION_INFO = -version-info 3:0:1
I'm pretty sure these are equivalent.
- Is there any way to automatically get VERSION 1.11.0 from
ares_version.h so there's fewer things to manually sync?
I think the actual C-Ares VERSION can probably be removed completely from the
line you are referring to. I don't believe it is actually being used for
anything,
the SOVERSION is the important one.
I don't think we can easily extract VERSION from ares_version.h because we don't
have access to a posix shell like we could assume with autotools. We might be
able to
build an executable just for that using the ares_version.h, but I'm not sure
how that might impact cross-building (I'm not familiar with creation of helpers
in a different platform than the target with CMake).
-Brad
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..0763545
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,571 @@
+CMAKE_MINIMUM_REQUIRED (VERSION 2.8)
+INCLUDE (CheckIncludeFiles)
+INCLUDE (CheckTypeSize)
+INCLUDE (CheckFunctionExists)
+INCLUDE (CheckSymbolExists)
+INCLUDE (CheckCSourceCompiles)
+INCLUDE (CheckStructHasMember)
+INCLUDE (CheckLibraryExists)
+
+PROJECT (cares C)
+
+
+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)
+
+
+# Keep build organized.
+SET (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
+SET (CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib)
+SET (CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib)
+SET (PACKAGE_DIRECTORY ${PROJECT_BINARY_DIR}/package)
+
+
+# Install path helpers
+IF ("${CARES_INSTALL_LOCATION_LIBS}" STREQUAL "")
+ SET (CARES_INSTALL_LOCATION_LIBS ${CMAKE_INSTALL_PREFIX}/lib CACHE
INTERNAL "")
+ENDIF ()
+IF ("${CARES_INSTALL_LOCATION_HEADERS}" STREQUAL "")
+ SET (CARES_INSTALL_LOCATION_HEADERS ${CMAKE_INSTALL_PREFIX}/include
CACHE INTERNAL "")
+ENDIF ()
+IF ("${CARES_INSTALL_LOCATION_BIN}" STREQUAL "")
+ SET (CARES_INSTALL_LOCATION_BIN ${CMAKE_INSTALL_PREFIX}/bin CACHE
INTERNAL "")
+ENDIF ()
+
+
+# When chain building C-Ares, we should set some of the same variables that a
+# standard Find_Package(CAres) would set. It just references the internal
+# build paths rather than an already-installed version.
+SET (CARES_FOUND 1 CACHE INTERNAL "CARES LIBRARY FOUND")
+SET (CARES_INCLUDE_DIRS "${PROJECT_BINARY_DIR};${CMAKE_CURRENT_SOURCE_DIR}"
CACHE INTERNAL "CARES INCLUDE DIRECTORIES")
+SET (CARES_LIBRARIES ${PROJECT_NAME} CACHE INTERNAL "CARES LIBRARIES")
+IF (${CARES_STATIC} AND NOT ${CARES_SHARED})
+ SET (CARES_DEFINITIONS "-DCARES_STATICLIB" CACHE INTERNAL "CARES
DEFINITIONS")
+ENDIF ()
+
+
+# Look for dependent/required libraries
+CHECK_LIBRARY_EXISTS (resolv res_servicename ""
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)
+ENDIF ()
+
+IF (IOS AND HAVE_LIBRESOLV)
+ SET (CARES_USE_LIBRESOLV 1)
+ENDIF()
+
+CHECK_LIBRARY_EXISTS (nsl gethostbyname "" HAVE_LIBNSL)
+CHECK_LIBRARY_EXISTS (socket gethostbyname "" HAVE_LIBSOCKET)
+IF (NOT ${HAVE_LIBSOCKET})
+ CHECK_LIBRARY_EXISTS (socket socket "" HAVE_LIBSOCKET)
+ENDIF ()
+CHECK_LIBRARY_EXISTS (rt clock_gettime "" HAVE_LIBRT)
+
+
+# Look for necessary includes
+CHECK_INCLUDE_FILES (sys/types.h HAVE_SYS_TYPES_H)
+CHECK_INCLUDE_FILES (sys/socket.h HAVE_SYS_SOCKET_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 (netinet/tcp.h HAVE_NETINET_TCP_H)
+CHECK_INCLUDE_FILES (net/if.h HAVE_NET_IF_H)
+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/socket.h HAVE_SYS_SOCKET_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/types.h HAVE_SYS_TYPES_H)
+CHECK_INCLUDE_FILES (sys/uio.h HAVE_SYS_UIO_H)
+CHECK_INCLUDE_FILES (time.h HAVE_TIME_H)
+CHECK_INCLUDE_FILES (dlfcn.h HAVE_DLFCN_H)
+CHECK_INCLUDE_FILES (unistd.h HAVE_UNISTD_H)
+
+# Include order matters for these windows files.
+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 ("winsock.h;windows.h" HAVE_WINSOCK_H)
+CHECK_INCLUDE_FILES (windows.h HAVE_WINDOWS_H)
+
+
+# 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=199309L
-D_XOPEN_SOURCE=600)
+ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "SunOS")
+ LIST (APPEND SYSFLAGS -D__EXTENSIONS__ -D_REENTRANT -D_XOPEN_SOURCE=600)
+ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "AIX")
+ LIST (APPEND SYSFLAGS -D_ALL_SOURCE -D_XOPEN_SOURCE=600)
+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)
+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_LIBRT})
+ LIST (APPEND CARES_DEPENDENT_LIBS rt)
+ENDIF ()
+IF (WIN32)
+ LIST (APPEND CARES_DEPENDENT_LIBS ws2_32)
+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
+# unset them.
+
+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_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_NETINET_IN_H netinet/in.h)
+CARES_EXTRAINCLUDE_IFSET (HAVE_NETINET_TCP_H netinet/tcp.h)
+CARES_EXTRAINCLUDE_IFSET (HAVE_SIGNAL_H signal.h)
+CARES_EXTRAINCLUDE_IFSET (HAVE_SYS_IOCTL_H sys/ioctl.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_TIME_H sys/time.h)
+CARES_EXTRAINCLUDE_IFSET (HAVE_TIME_H time.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_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() {
+ ${type} var_exists;
+ return 0;
+ }
+ ")
+ CHECK_C_SOURCE_COMPILES ("${_CARES_C_SOURCE}" ${var})
+ENDMACRO ()
+
+CARES_TYPE_EXISTS (socklen_t HAVE_SOCKLEN_T)
+CARES_TYPE_EXISTS (SOCKET HAVE_TYPE_SOCKET)
+CARES_TYPE_EXISTS (bool HAVE_BOOL_T)
+CARES_TYPE_EXISTS (ssize_t HAVE_SSIZE_T)
+CARES_TYPE_EXISTS ("long long" HAVE_LONGLONG)
+CARES_TYPE_EXISTS (sig_atomic_t HAVE_SIG_ATOMIC_T)
+CARES_TYPE_EXISTS ("struct addrinfo" HAVE_STRUCT_ADDRINFO)
+CARES_TYPE_EXISTS ("struct in6_addr" HAVE_STRUCT_IN6_ADDR)
+CARES_TYPE_EXISTS ("struct sockaddr_in6" HAVE_STRUCT_SOCKADDR_IN6)
+CARES_TYPE_EXISTS ("struct sockaddr_storage" HAVE_STRUCT_SOCKADDR_STORAGE)
+CARES_TYPE_EXISTS ("struct timeval" HAVE_STRUCT_TIMEVAL)
+
+
+# Check for preprocessor defines
+CHECK_SYMBOL_EXISTS (AF_INET6 "${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)
+CHECK_SYMBOL_EXISTS (CLOCK_MONOTONIC "${CMAKE_EXTRA_INCLUDE_FILES}"
HAVE_CLOCK_GETTIME_MONOTONIC)
+
+CHECK_STRUCT_HAS_MEMBER("struct sockaddr_in6" sin6_scope_id
"${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID LANGUAGE C)
+
+# Check for "LL" numeric suffix support
+CHECK_C_SOURCE_COMPILES ("int main() { int n=1234LL; return 0; }" HAVE_LL)
+
+
+# NOTE: CHECK_FUNCTION_EXISTS appears to be broken on 32bit Windows with VS2005
+# at least. It does not appear to honor CMAKE_REQUIRED_LIBRARIES for
some
+# reason so does not find functions that are not in the standard C
library.
+# For this reason, we are going to at least just make sure it is in the
+# headers by using CHECK_SYMBOL_EXISTS. But we wrap it in a Macro to
allow
+# it to work on other systems
+MACRO (CARES_FUNCTION_EXISTS func var)
+ IF (WIN32 AND MSVC)
+ CHECK_SYMBOL_EXISTS("${func}" "${CMAKE_EXTRA_INCLUDE_FILES}"
"${var}")
+ ELSE ()
+ CHECK_FUNCTION_EXISTS("${func}" "${var}")
+ ENDIF ()
+ENDMACRO ()
+
+CARES_FUNCTION_EXISTS (bitncmp HAVE_BITNCMP)
+CARES_FUNCTION_EXISTS (closesocket HAVE_CLOSESOCKET)
+CARES_FUNCTION_EXISTS (CloseSocket HAVE_CLOSESOCKET_CAMEL)
+CARES_FUNCTION_EXISTS (connect HAVE_CONNECT)
+CARES_FUNCTION_EXISTS (fcntl HAVE_FCNTL)
+CARES_FUNCTION_EXISTS (freeaddrinfo HAVE_FREEADDRINFO)
+CARES_FUNCTION_EXISTS (getaddrinfo HAVE_GETADDRINFO)
+CARES_FUNCTION_EXISTS (getenv HAVE_GETENV)
+CARES_FUNCTION_EXISTS (gethostbyaddr HAVE_GETHOSTBYADDR)
+CARES_FUNCTION_EXISTS (gethostbyname HAVE_GETHOSTBYNAME)
+CARES_FUNCTION_EXISTS (gethostname HAVE_GETHOSTNAME)
+CARES_FUNCTION_EXISTS (getnameinfo HAVE_GETNAMEINFO)
+CARES_FUNCTION_EXISTS (getservbyport_r HAVE_GETSERVBYPORT_R)
+CARES_FUNCTION_EXISTS (gettimeofday HAVE_GETTIMEOFDAY)
+CARES_FUNCTION_EXISTS (if_indextoname HAVE_IF_INDEXTONAME)
+CARES_FUNCTION_EXISTS (inet_net_pton HAVE_INET_NET_PTON)
+IF (NOT WIN32)
+ # Disabled on windows. CARES_FUNCTION_EXISTS will say they exist, but
+ # it doesn't appear as though proper headers really exist for these
functions
+ # as there are prototype warnings during the build.
+ CARES_FUNCTION_EXISTS (inet_ntop HAVE_INET_NTOP)
+ CARES_FUNCTION_EXISTS (inet_pton HAVE_INET_PTON)
+ENDIF ()
+CARES_FUNCTION_EXISTS (ioctl HAVE_IOCTL)
+CARES_FUNCTION_EXISTS (ioctlsocket HAVE_IOCTLSOCKET)
+CARES_FUNCTION_EXISTS (IoctlSocket HAVE_IOCTLSOCKET_CAMEL)
+CARES_FUNCTION_EXISTS (recv HAVE_RECV)
+CARES_FUNCTION_EXISTS (recvfrom HAVE_RECVFROM)
+CARES_FUNCTION_EXISTS (send HAVE_SEND)
+CARES_FUNCTION_EXISTS (setsockopt HAVE_SETSOCKOPT)
+CARES_FUNCTION_EXISTS (socket HAVE_SOCKET)
+CARES_FUNCTION_EXISTS (strcasecmp HAVE_STRCASECMP)
+CARES_FUNCTION_EXISTS (strcmpi HAVE_STRCMPI)
+CARES_FUNCTION_EXISTS (strdup HAVE_STRDUP)
+CARES_FUNCTION_EXISTS (stricmp HAVE_STRICMP)
+CARES_FUNCTION_EXISTS (strncasecmp HAVE_STRNCASECMP)
+CARES_FUNCTION_EXISTS (strncmpi HAVE_STRNCMPI)
+CARES_FUNCTION_EXISTS (strnicmp HAVE_STRNICMP)
+CARES_FUNCTION_EXISTS (writev HAVE_WRITEV)
+
+# Unset temporary data
+SET (CMAKE_EXTRA_INCLUDE_FILES)
+SET (CMAKE_REQUIRED_DEFINITIONS)
+SET (CMAKE_REQUIRED_LIBRARIES)
+
+
+################################################################################
+# 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 "${HAVE_SOCKLEN_T}")
+ # If we have ssize_t and socklen_t, the API is usually sane and uses
ssize_t and size_t for lengths
+ SET (RECVFROM_TYPE_RETV ssize_t)
+ SET (RECVFROM_TYPE_ARG3 size_t)
+ELSE ()
+ SET (RECVFROM_TYPE_RETV int)
+ SET (RECVFROM_TYPE_ARG3 int)
+ENDIF ()
+
+IF ("${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 ()
+
+# 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 (SEND_TYPE_ARG1 ${RECVFROM_TYPE_ARG1})
+SET (RECV_TYPE_ARG3 ${RECVFROM_TYPE_ARG3})
+SET (SEND_TYPE_ARG3 ${RECVFROM_TYPE_ARG3})
+SET (GETHOSTNAME_TYPE_ARG2 ${RECVFROM_TYPE_ARG3})
+
+# These should always be "sane" values to use always
+SET (RECVFROM_QUAL_ARG5 )
+SET (RECVFROM_TYPE_ARG2 "void *")
+SET (RECVFROM_TYPE_ARG4 int)
+SET (RECVFROM_TYPE_ARG5 "struct sockaddr *")
+SET (RECV_TYPE_ARG2 "void *")
+SET (RECV_TYPE_ARG4 int)
+SET (GETNAMEINFO_TYPE_ARG1 "struct sockaddr *")
+SET (GETNAMEINFO_TYPE_ARG7 int)
+SET (SEND_TYPE_ARG2 "void *")
+SET (SEND_TYPE_ARG4 int)
+################################################################################
+
+
+# HAVE_CXX11 ??
+# HAVE_SIG_ATOMIC_T_VOLATILE ??
+
+
+# Set a few variables by hand that C-Ares wants, logically, based on detection
+# data.
+
+IF (${HAVE_SOCKLEN_T})
+ Set (CARES_TYPEOF_ARES_SOCKLEN_T "socklen_t")
+ELSE ()
+ Set (CARES_TYPEOF_ARES_SOCKLEN_T "int")
+ENDIF ()
+
+IF ("${HAVE_FCNTL}" AND "${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")
+ SET (GETSERVBYPORT_R_ARGS 4)
+ ELSE ()
+ # Probably linux
+ SET (GETSERVBYPORT_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()
+
+# Write ares_build.h configuration file. This is an installed file.
+CONFIGURE_FILE (ares_build.h.cmake ${PROJECT_BINARY_DIR}/ares_build.h)
+
+# Write ares_config.h configuration file. This is used only for the build.
+CONFIGURE_FILE (ares_config.h.cmake ${PROJECT_BINARY_DIR}/ares_config.h)
+
+
+INCLUDE_DIRECTORIES (
+ ${CARES_INCLUDE_DIRS}
+)
+
+# Source files.
+SET (CARES_SOURCES
+ ares__close_sockets.c
+ ares__get_hostent.c
+ ares__read_line.c
+ ares__timeval.c
+ ares_cancel.c
+ ares_data.c
+ ares_destroy.c
+ ares_expand_name.c
+ ares_expand_string.c
+ ares_fds.c
+ ares_free_hostent.c
+ ares_free_string.c
+ ares_getenv.c
+ ares_gethostbyaddr.c
+ ares_gethostbyname.c
+ ares_getnameinfo.c
+ ares_getsock.c
+ ares_init.c
+ ares_library_init.c
+ ares_llist.c
+ ares_mkquery.c
+ ares_create_query.c
+ ares_nowarn.c
+ ares_options.c
+ ares_parse_a_reply.c
+ ares_parse_aaaa_reply.c
+ ares_parse_mx_reply.c
+ ares_parse_naptr_reply.c
+ ares_parse_ns_reply.c
+ ares_parse_ptr_reply.c
+ ares_parse_soa_reply.c
+ ares_parse_srv_reply.c
+ ares_parse_txt_reply.c
+ ares_platform.c
+ ares_process.c
+ ares_query.c
+ ares_search.c
+ ares_send.c
+ ares_strcasecmp.c
+ ares_strdup.c
+ ares_strerror.c
+ ares_timeout.c
+ ares_version.c
+ ares_writev.c
+ bitncmp.c
+ inet_net_pton.c
+ inet_ntop.c
+ windows_port.c
+)
+
+# Build the dynamic/shared library
+IF (${CARES_SHARED})
+ ADD_LIBRARY (${PROJECT_NAME} SHARED ${CARES_SOURCES})
+ SET_TARGET_PROPERTIES (${PROJECT_NAME} PROPERTIES COMPILE_FLAGS
"-DHAVE_CONFIG_H=1 -DCARES_BUILDING_LIBRARY")
+ SET_TARGET_PROPERTIES (${PROJECT_NAME} PROPERTIES SOVERSION 3.0.1)
+ TARGET_LINK_LIBRARIES (${PROJECT_NAME} ${CARES_DEPENDENT_LIBS})
+ IF (${CARES_INSTALL})
+ INSTALL (TARGETS ${PROJECT_NAME} DESTINATION
${CARES_INSTALL_LOCATION_LIBS})
+ ENDIF ()
+
+ # Set a static suffix if building both shared and static libs
+ SET (STATIC_SUFFIX "_static")
+ENDIF ()
+
+# Build the static library
+IF (${CARES_STATIC})
+ ADD_LIBRARY (${PROJECT_NAME}${STATIC_SUFFIX} STATIC ${CARES_SOURCES})
+ SET_TARGET_PROPERTIES (${PROJECT_NAME}${STATIC_SUFFIX} PROPERTIES
COMPILE_FLAGS "-DHAVE_CONFIG_H=1 -DCARES_STATICLIB" OUTPUT_NAME ${PROJECT_NAME})
+ SET_TARGET_PROPERTIES (${PROJECT_NAME}${STATIC_SUFFIX} PROPERTIES
SOVERSION 3.0.1)
+ IF (${CARES_STATIC_PIC})
+ SET_TARGET_PROPERTIES (${PROJECT_NAME}${STATIC_SUFFIX}
PROPERTIES POSITION_INDEPENDENT_CODE True)
+ ENDIF ()
+ TARGET_LINK_LIBRARIES (${PROJECT_NAME}${STATIC_SUFFIX}
${CARES_DEPENDENT_LIBS})
+ IF (${CARES_INSTALL})
+ INSTALL (TARGETS ${PROJECT_NAME}${STATIC_SUFFIX} DESTINATION
${CARES_INSTALL_LOCATION_LIBS})
+ ENDIF ()
+ENDIF ()
+
+
+# Headers installation target
+IF (${CARES_INSTALL})
+ SET (CARES_HEADERS ares.h ares_version.h ares_dns.h
"${PROJECT_BINARY_DIR}/ares_build.h" ares_rules.h)
+ INSTALL (FILES ${CARES_HEADERS} DESTINATION
${CARES_INSTALL_LOCATION_HEADERS})
+ENDIF ()
+
+
+# Common sources for all examples
+SET (CARES_EXAMPLE_SOURCES
+ ares_getopt.c
+ ares_nowarn.c
+ ares_strcasecmp.c
+)
+
+# Build ahost
+ADD_EXECUTABLE (ahost ahost.c ${CARES_EXAMPLE_SOURCES})
+SET_TARGET_PROPERTIES(ahost PROPERTIES COMPILE_FLAGS "-DHAVE_CONFIG_H=1
${CARES_DEFINITIONS}")
+TARGET_LINK_LIBRARIES (ahost ${CARES_LIBRARIES} ${CARES_DEPENDENT_LIBS})
+IF (${CARES_INSTALL})
+ INSTALL (TARGETS ahost RUNTIME DESTINATION
${CARES_INSTALL_LOCATION_BIN})
+ENDIF ()
+
+
+# Build adig
+ADD_EXECUTABLE (adig adig.c ${CARES_EXAMPLE_SOURCES})
+SET_TARGET_PROPERTIES(adig PROPERTIES COMPILE_FLAGS "-DHAVE_CONFIG_H=1
${CARES_DEFINITIONS}")
+TARGET_LINK_LIBRARIES (adig ${CARES_LIBRARIES} ${CARES_DEPENDENT_LIBS})
+IF (${CARES_INSTALL})
+ INSTALL (TARGETS adig RUNTIME DESTINATION ${CARES_INSTALL_LOCATION_BIN})
+ENDIF ()
+
+
+# Build acountry
+ADD_EXECUTABLE (acountry acountry.c ${CARES_EXAMPLE_SOURCES})
+SET_TARGET_PROPERTIES(acountry PROPERTIES COMPILE_FLAGS "-DHAVE_CONFIG_H=1
${CARES_DEFINITIONS}")
+TARGET_LINK_LIBRARIES (acountry ${CARES_LIBRARIES} ${CARES_DEPENDENT_LIBS})
+IF (${CARES_INSTALL})
+ INSTALL (TARGETS acountry RUNTIME DESTINATION
${CARES_INSTALL_LOCATION_BIN})
+ENDIF ()
diff --git a/ares_build.h.cmake b/ares_build.h.cmake
new file mode 100644
index 0000000..e1e746d
--- /dev/null
+++ b/ares_build.h.cmake
@@ -0,0 +1,39 @@
+#ifndef __CARES_BUILD_H
+#define __CARES_BUILD_H
+
+#define CARES_TYPEOF_ARES_SOCKLEN_T @CARES_TYPEOF_ARES_SOCKLEN_T@
+
+/* Prefix names with CARES_ to make sure they don't conflict with other
config.h
+ * files. We need to include some dependent headers that may be system
specific
+ * for C-Ares */
+#cmakedefine CARES_HAVE_SYS_TYPES_H
+#cmakedefine CARES_HAVE_SYS_SOCKET_H
+#cmakedefine CARES_HAVE_WINDOWS_H
+#cmakedefine CARES_HAVE_WS2TCPIP_H
+#cmakedefine CARES_HAVE_WINSOCK2_H
+#cmakedefine CARES_HAVE_WINDOWS_H
+
+#ifdef CARES_HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#ifdef CARES_HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+
+#ifdef CARES_HAVE_WINSOCK2_H
+# include <winsock2.h>
+#endif
+
+#ifdef CARES_HAVE_WS2TCPIP_H
+# include <ws2tcpip.h>
+#endif
+
+#ifdef CARES_HAVE_WINDOWS_H
+# include <windows.h>
+#endif
+
+
+typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t;
+
+#endif /* __CARES_BUILD_H */
diff --git a/ares_config.h.cmake b/ares_config.h.cmake
new file mode 100644
index 0000000..acbef81
--- /dev/null
+++ b/ares_config.h.cmake
@@ -0,0 +1,433 @@
+/* Generated from ares_config.h.cmake*/
+
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
+/* define this if ares is built for a big endian system */
+#undef ARES_BIG_ENDIAN
+
+/* when building as static part of libcurl */
+#undef BUILDING_LIBCURL
+
+/* Defined for build that exposes internal static functions for testing. */
+#undef CARES_EXPOSE_STATICS
+
+/* Defined for build with symbol hiding. */
+#undef CARES_SYMBOL_HIDING
+
+/* Definition to make a library symbol externally visible. */
+#undef CARES_SYMBOL_SCOPE_EXTERN
+
+/* Use resolver library to configure cares */
+#cmakedefine CARES_USE_LIBRESOLV
+
+/* if a /etc/inet dir is being used */
+#undef ETC_INET
+
+/* Define to the type of arg 2 for gethostname. */
+#define GETHOSTNAME_TYPE_ARG2 @GETHOSTNAME_TYPE_ARG2@
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 @GETNAMEINFO_QUAL_ARG1@
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 @GETNAMEINFO_TYPE_ARG1@
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 @GETNAMEINFO_TYPE_ARG2@
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 @GETNAMEINFO_TYPE_ARG46@
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 @GETNAMEINFO_TYPE_ARG7@
+
+/* Specifies the number of arguments to getservbyport_r */
+#define GETSERVBYPORT_R_ARGS @GETSERVBYPORT_R_ARGS@
+
+/* Define to 1 if you have AF_INET6. */
+#cmakedefine HAVE_AF_INET6
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#cmakedefine HAVE_ARPA_INET_H
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#cmakedefine HAVE_ARPA_NAMESER_COMPAT_H
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#cmakedefine HAVE_ARPA_NAMESER_H
+
+/* Define to 1 if you have the <assert.h> header file. */
+#cmakedefine HAVE_ASSERT_H
+
+/* Define to 1 if you have the `bitncmp' function. */
+#cmakedefine HAVE_BITNCMP
+
+/* Define to 1 if bool is an available type. */
+#cmakedefine HAVE_BOOL_T
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+#cmakedefine HAVE_CLOCK_GETTIME_MONOTONIC
+
+/* Define to 1 if you have the closesocket function. */
+#cmakedefine HAVE_CLOSESOCKET
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+#cmakedefine HAVE_CLOSESOCKET_CAMEL
+
+/* Define to 1 if you have the connect function. */
+#cmakedefine HAVE_CONNECT
+
+/* define if the compiler supports basic C++11 syntax */
+#cmakedefine HAVE_CXX11
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#cmakedefine HAVE_DLFCN_H
+
+/* Define to 1 if you have the <errno.h> header file. */
+#cmakedefine HAVE_ERRNO_H
+
+/* Define to 1 if you have the fcntl function. */
+#cmakedefine HAVE_FCNTL
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#cmakedefine HAVE_FCNTL_H
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#cmakedefine HAVE_FCNTL_O_NONBLOCK
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#cmakedefine HAVE_FREEADDRINFO
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#cmakedefine HAVE_GETADDRINFO
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+#cmakedefine HAVE_GETADDRINFO_THREADSAFE
+
+/* Define to 1 if you have the getenv function. */
+#cmakedefine HAVE_GETENV
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#cmakedefine HAVE_GETHOSTBYADDR
+
+/* Define to 1 if you have the gethostbyname function. */
+#cmakedefine HAVE_GETHOSTBYNAME
+
+/* Define to 1 if you have the gethostname function. */
+#cmakedefine HAVE_GETHOSTNAME
+
+/* Define to 1 if you have the getnameinfo function. */
+#cmakedefine HAVE_GETNAMEINFO
+
+/* Define to 1 if you have the getservbyport_r function. */
+#cmakedefine HAVE_GETSERVBYPORT_R
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#cmakedefine HAVE_GETTIMEOFDAY
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#cmakedefine HAVE_IF_INDEXTONAME
+
+/* Define to 1 if you have a IPv6 capable working inet_net_pton function. */
+#cmakedefine HAVE_INET_NET_PTON
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#cmakedefine HAVE_INET_NTOP
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#cmakedefine HAVE_INET_PTON
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#cmakedefine HAVE_INTTYPES_H
+
+/* Define to 1 if you have the ioctl function. */
+#cmakedefine HAVE_IOCTL
+
+/* Define to 1 if you have the ioctlsocket function. */
+#cmakedefine HAVE_IOCTLSOCKET
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+#cmakedefine HAVE_IOCTLSOCKET_CAMEL
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+ */
+#cmakedefine HAVE_IOCTLSOCKET_CAMEL_FIONBIO
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+#cmakedefine HAVE_IOCTLSOCKET_FIONBIO
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#cmakedefine HAVE_IOCTL_FIONBIO
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#cmakedefine HAVE_IOCTL_SIOCGIFADDR
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+#cmakedefine HAVE_LIBRESOLV
+
+/* Define to 1 if you have the <limits.h> header file. */
+#cmakedefine HAVE_LIMITS_H
+
+/* if your compiler supports LL */
+#cmakedefine HAVE_LL
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#cmakedefine HAVE_LONGLONG
+
+/* Define to 1 if you have the malloc.h header file. */
+#cmakedefine HAVE_MALLOC_H
+
+/* Define to 1 if you have the memory.h header file. */
+#cmakedefine HAVE_MEMORY_H
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+#cmakedefine HAVE_MSG_NOSIGNAL
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#cmakedefine HAVE_NETDB_H
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#cmakedefine HAVE_NETINET_IN_H
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#cmakedefine HAVE_NETINET_TCP_H
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#cmakedefine HAVE_NET_IF_H
+
+/* Define to 1 if you have PF_INET6. */
+#cmakedefine HAVE_PF_INET6
+
+/* Define to 1 if you have the recv function. */
+#cmakedefine HAVE_RECV
+
+/* Define to 1 if you have the recvfrom function. */
+#cmakedefine HAVE_RECVFROM
+
+/* Define to 1 if you have the send function. */
+#cmakedefine HAVE_SEND
+
+/* Define to 1 if you have the setsockopt function. */
+#cmakedefine HAVE_SETSOCKOPT
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+#cmakedefine HAVE_SETSOCKOPT_SO_NONBLOCK
+
+/* Define to 1 if you have the <signal.h> header file. */
+#cmakedefine HAVE_SIGNAL_H
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#cmakedefine HAVE_SIG_ATOMIC_T
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+#cmakedefine HAVE_SIG_ATOMIC_T_VOLATILE
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#cmakedefine HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
+
+/* Define to 1 if you have the socket function. */
+#cmakedefine HAVE_SOCKET
+
+/* Define to 1 if you have the <socket.h> header file. */
+#cmakedefine HAVE_SOCKET_H
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#cmakedefine HAVE_STDBOOL_H
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#cmakedefine HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#cmakedefine HAVE_STDLIB_H
+
+/* Define to 1 if you have the strcasecmp function. */
+#cmakedefine HAVE_STRCASECMP
+
+/* Define to 1 if you have the strcmpi function. */
+#cmakedefine HAVE_STRCMPI
+
+/* Define to 1 if you have the strdup function. */
+#cmakedefine HAVE_STRDUP
+
+/* Define to 1 if you have the stricmp function. */
+#cmakedefine HAVE_STRICMP
+
+/* Define to 1 if you have the <strings.h> header file. */
+#cmakedefine HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#cmakedefine HAVE_STRING_H
+
+/* Define to 1 if you have the strncasecmp function. */
+#cmakedefine HAVE_STRNCASECMP
+
+/* Define to 1 if you have the strncmpi function. */
+#cmakedefine HAVE_STRNCMPI
+
+/* Define to 1 if you have the strnicmp function. */
+#cmakedefine HAVE_STRNICMP
+
+/* Define to 1 if you have the <stropts.h> header file. */
+#cmakedefine HAVE_STROPTS_H
+
+/* Define to 1 if you have struct addrinfo. */
+#cmakedefine HAVE_STRUCT_ADDRINFO
+
+/* Define to 1 if you have struct in6_addr. */
+#cmakedefine HAVE_STRUCT_IN6_ADDR
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#cmakedefine HAVE_STRUCT_SOCKADDR_IN6
+
+/* if struct sockaddr_storage is defined */
+#cmakedefine HAVE_STRUCT_SOCKADDR_STORAGE
+
+/* Define to 1 if you have the timeval struct. */
+#cmakedefine HAVE_STRUCT_TIMEVAL
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#cmakedefine HAVE_SYS_IOCTL_H
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#cmakedefine HAVE_SYS_PARAM_H
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#cmakedefine HAVE_SYS_SELECT_H
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#cmakedefine HAVE_SYS_SOCKET_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#cmakedefine HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#cmakedefine HAVE_SYS_TIME_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#cmakedefine HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#cmakedefine HAVE_SYS_UIO_H
+
+/* Define to 1 if you have the <time.h> header file. */
+#cmakedefine HAVE_TIME_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#cmakedefine HAVE_UNISTD_H
+
+/* Define to 1 if you have the windows.h header file. */
+#cmakedefine HAVE_WINDOWS_H
+
+/* Define to 1 if you have the winsock2.h header file. */
+#cmakedefine HAVE_WINSOCK2_H
+
+/* Define to 1 if you have the winsock.h header file. */
+#cmakedefine HAVE_WINSOCK_H
+
+/* Define to 1 if you have the writev function. */
+#cmakedefine HAVE_WRITEV
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+#cmakedefine HAVE_WS2TCPIP_H
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+#cmakedefine NEED_MALLOC_H
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+#cmakedefine NEED_MEMORY_H
+
+/* a suitable file/device to read random data from */
+#cmakedefine RANDOM_FILE
+
+/* Define to the type qualifier pointed by arg 5 for recvfrom. */
+#define RECVFROM_QUAL_ARG5 @RECVFROM_QUAL_ARG5@
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 @RECVFROM_TYPE_ARG1@
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 @RECVFROM_TYPE_ARG2@
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#cmakedefine01 RECVFROM_TYPE_ARG2_IS_VOID
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 @RECVFROM_TYPE_ARG3@
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 @RECVFROM_TYPE_ARG4@
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 @RECVFROM_TYPE_ARG5@
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+#cmakedefine01 RECVFROM_TYPE_ARG5_IS_VOID
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 @RECVFROM_TYPE_ARG6@
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+#cmakedefine01 RECVFROM_TYPE_ARG6_IS_VOID
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV @RECVFROM_TYPE_RETV@
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 @RECV_TYPE_ARG1@
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 @RECV_TYPE_ARG2@
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 @RECV_TYPE_ARG3@
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 @RECV_TYPE_ARG4@
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV @RECV_TYPE_RETV@
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE @RETSIGTYPE@
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 @SEND_QUAL_ARG2@
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 @SEND_TYPE_ARG1@
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 @SEND_TYPE_ARG2@
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 @SEND_TYPE_ARG3@
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 @SEND_TYPE_ARG4@
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV @SEND_TYPE_RETV@
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#cmakedefine TIME_WITH_SYS_TIME
+
+/* Define to disable non-blocking sockets. */
+#undef USE_BLOCKING_SOCKETS
+
+/* Define to avoid automatic inclusion of winsock.h */
+#undef WIN32_LEAN_AND_MEAN
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+#undef in_addr_t
+
+#cmakedefine HAVE_SSIZE_T
+
+/* Create our own ssize_t */
+#ifndef HAVE_SSIZE_T
+# ifdef _WIN64
+typedef __int64 ssize_t;
+# else
+typedef long ssize_t;
+# endif
+#endif
