CMAKE_MINIMUM_REQUIRED (VERSION 3.1.0) INCLUDE (CheckIncludeFiles) INCLUDE (CheckTypeSize) INCLUDE (CheckFunctionExists) INCLUDE (CheckSymbolExists) INCLUDE (CheckCSourceCompiles) INCLUDE (CheckStructHasMember) INCLUDE (CheckLibraryExists) PROJECT (c-ares LANGUAGES C VERSION "1.17.0" ) # 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 "6:2:4") 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) # Tests require static to be enabled on Windows to be able to access otherwise hidden symbols IF (CARES_BUILD_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 reenabled to support tests") ENDIF () # 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" ${flag_var} "${${flag_var}}") ENDIF () ENDFOREACH () # clean up SET (upper_config_type) SET (config_type) SET (flag_var) ENDIF () ENDIF () # Keep build organized. SET (CMAKE_RUNTIME_OUTPUT_DIRECTORY "${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 (PACKAGE_DIRECTORY ${PROJECT_BINARY_DIR}/package) # 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 ${CMAKE_INSTALL_LIBDIR} ) # Function in Library # CHECK_LIBRARY_EXISTS can't be used as it will return true if the function # is found in a different dependent library. MACRO (CARES_FUNCTION_IN_LIBRARY func lib var) CHECK_FUNCTION_EXISTS ("${func}" "_CARES_FUNC_IN_LIB_GLOBAL_${func}") IF ("${_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 #include int main() { #if TARGET_OS_IPHONE == 0 #error Not an iPhone target #endif return 0; } " IOS) CHECK_C_SOURCE_COMPILES (" #include #include 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 #include #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 ((IOS OR APPLE OR 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 (socket socket HAVE_SOCKET_LIBSOCKET) IF (HAVE_GHBN_LIBSOCKET OR HAVE_SOCKET_LIBSOCKET) SET(HAVE_LIBSOCKET TRUE) ENDIF () CARES_FUNCTION_IN_LIBRARY (clock_gettime rt 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 (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/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 (time.h HAVE_TIME_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. 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 -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=0x0600) 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 Advapi32) 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_NET_IF_H net/if.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_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_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 #include ") 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) SET (CMAKE_REQUIRED_LIBRARIES) find_file(CARES_RANDOM_FILE urandom /dev) mark_as_advanced(CARES_RANDOM_FILE) ################################################################################ # 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 () 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") 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") 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() # Record toplevel CMakeLists.txt path set(CARES_TOPLEVEL_DIR "${CMAKE_CURRENT_SOURCE_DIR}") # 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) SET (CPPFLAG_CARES_STATICLIB "-DCARES_STATICLIB") 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.haxx.se/" ) set( CPACK_PACKAGE_CONTACT "https://c-ares.haxx.se/" ) 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 "" ) # 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 ()