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libcares/CMakeLists.txt  view on Meta::CPAN

CARES_EXTRAINCLUDE_IFSET (HAVE_STRINGS_H      strings.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_SYS_UIO_H      sys/uio.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() {
			${type} var_exists;
			(void)var_exists;
			return 0;
		}
	")
	CHECK_C_SOURCE_COMPILES ("${_CARES_C_SOURCE}" ${var})
ENDMACRO ()

CARES_TYPE_EXISTS (socklen_t                 HAVE_SOCKLEN_T)
CARES_TYPE_EXISTS (SOCKET                    HAVE_TYPE_SOCKET)
CARES_TYPE_EXISTS (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)

# 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_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)


CHECK_SYMBOL_EXISTS (bitncmp         "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_BITNCMP)
CHECK_SYMBOL_EXISTS (closesocket     "${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 (gethostbyaddr   "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETHOSTBYADDR)
CHECK_SYMBOL_EXISTS (gethostbyname   "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETHOSTBYNAME)
CHECK_SYMBOL_EXISTS (gethostname     "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETHOSTNAME)
CHECK_SYMBOL_EXISTS (getnameinfo     "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_GETNAMEINFO)
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 (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)

# 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)

# Unset temporary data
SET (CMAKE_EXTRA_INCLUDE_FILES)
SET (CMAKE_REQUIRED_DEFINITIONS)