CMAKE_MINIMUM_REQUIRED ( VERSION 2.8.12 )
# Fix for CMake policy warning when building with CMake >= 3.0.
# TODO: remove this fix once minimum version is updated to 3.0 or newer.
IF ( NOT CMAKE_VERSION VERSION_LESS 3.0 )
CMAKE_POLICY ( SET CMP0048 NEW )
ENDIF ( )
INCLUDE ( CheckIncludeFiles )
INCLUDE ( CheckTypeSize )
INCLUDE ( CheckFunctionExists )
INCLUDE ( CheckSymbolExists )
INCLUDE ( CheckCSourceCompiles )
INCLUDE ( CheckStructHasMember )
INCLUDE ( CheckLibraryExists )
INCLUDE ( GNUInstallDirs )
PROJECT ( c-ares C )
# 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 "4:0:2" )
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 )
# 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>
i n t main ( ) {
#if TARGET_OS_IPHONE == 0
#error Not an iPhone target
#endif
r e t u r n 0 ;
}
"
I O S )
CHECK_C_SOURCE_COMPILES ( "
#include <stdio.h>
#include <TargetConditionals.h>
i n t main ( ) {
#if TARGET_OS_IPHONE == 0 || __IPHONE_OS_VERSION_MIN_REQUIRED < 100000
# error Not iOS v10
#endif
r e t u r n 0 ;
}
"
I O S _ V 1 0 )
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
i n t main ( ) {
#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
# error Not MacOSX 10.12 or higher
#endif
r e t u r n 0 ;
}
"
M A C O S _ V 1 0 1 2 )
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 }
i n t main ( ) {
$ { t y p e } v a r _ e x i s t s ;
r e t u r n 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 )
# 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
C M A K E _ S Y S T E M _ N A M E S T R E Q U A L " H P U X " O R
C M A K E _ S Y S T E M _ N A M E S T R E Q U A L " N e t B S D " O R
C M A K E _ S Y S T E M _ N A M E S T R E Q U A L " S u n O S " O R
C M A K E _ S Y S T E M _ N A M E S T R E Q U A L " F r e e B S D " O R
C M A K E _ S Y S T E M _ N A M E S T R E Q U A L " A I X " O R
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
C M A K E _ S Y S T E M _ N A M E S T R E Q U A L " O p e n B S D " )
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 )
# 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 } ${ MAKEFILE_INC_TEXT } )
endfunction ( )
# run the function...
transform_makefile_inc ( "Makefile.inc" "${PROJECT_BINARY_DIR}/Makefile.inc.cmake" )
include ( ${ PROJECT_BINARY_DIR } /Makefile.inc.cmake )
# Build the dynamic/shared library
IF ( CARES_SHARED )
ADD_LIBRARY ( ${ PROJECT_NAME } SHARED ${ CSOURCES } )
# Convert CARES_LIB_VERSIONINFO libtool version format into VERSION and SOVERSION
# Convert from ":" separated into CMake list format using ";"
STRING ( REPLACE ":" ";" CARES_LIB_VERSIONINFO ${ CARES_LIB_VERSIONINFO } )
LIST ( GET CARES_LIB_VERSIONINFO 0 CARES_LIB_VERSION_CURRENT )
LIST ( GET CARES_LIB_VERSIONINFO 1 CARES_LIB_VERSION_REVISION )
LIST ( GET CARES_LIB_VERSIONINFO 2 CARES_LIB_VERSION_AGE )
MATH ( EXPR CARES_LIB_VERSION_MAJOR "${CARES_LIB_VERSION_CURRENT} - ${CARES_LIB_VERSION_AGE}" )
SET ( CARES_LIB_VERSION_MINOR "${CARES_LIB_VERSION_AGE}" )
SET ( CARES_LIB_VERSION_RELEASE "${CARES_LIB_VERSION_REVISION}" )
SET_TARGET_PROPERTIES ( ${ PROJECT_NAME } PROPERTIES
O U T P U T _ N A M E c a r e s
V E R S I O N " $ { C A R E S _ L I B _ V E R S I O N _ M A J O R } . $ { C A R E S _ L I B _ V E R S I O N _ M I N O R } . $ { C A R E S _ L I B _ V E R S I O N _ R E L E A S E } "
S O V E R S I O N " $ { C A R E S _ L I B _ V E R S I O N _ M A J O R } "
)
TARGET_INCLUDE_DIRECTORIES ( ${ PROJECT_NAME } PUBLIC "${PROJECT_BINARY_DIR}" "${CMAKE_CURRENT_SOURCE_DIR}" )
TARGET_COMPILE_DEFINITIONS ( ${ PROJECT_NAME } PRIVATE HAVE_CONFIG_H=1 CARES_BUILDING_LIBRARY )
TARGET_LINK_LIBRARIES ( ${ PROJECT_NAME } PUBLIC ${ CARES_DEPENDENT_LIBS } )
IF ( CARES_INSTALL )
INSTALL ( TARGETS ${ PROJECT_NAME } DESTINATION ${ CMAKE_INSTALL_LIBDIR } )
ENDIF ( )
SET ( STATIC_SUFFIX "_static" )
# For chain building: add alias targets that look like import libs that would be returned by find_package(Cares).
ADD_LIBRARY ( Cares::cares_shared ALIAS ${ PROJECT_NAME } )
ADD_LIBRARY ( Cares::cares ALIAS ${ PROJECT_NAME } )
ENDIF ( )
# Build the static library
IF ( CARES_STATIC )
SET ( LIBNAME ${ PROJECT_NAME } ${ STATIC_SUFFIX } )
ADD_LIBRARY ( ${ LIBNAME } STATIC ${ CSOURCES } )
SET_TARGET_PROPERTIES ( ${ LIBNAME } PROPERTIES OUTPUT_NAME cares )
IF ( CARES_STATIC_PIC )
SET_TARGET_PROPERTIES ( ${ LIBNAME } PROPERTIES POSITION_INDEPENDENT_CODE True )
ENDIF ( )
TARGET_INCLUDE_DIRECTORIES ( ${ LIBNAME } PUBLIC "${PROJECT_BINARY_DIR}" "${CMAKE_CURRENT_SOURCE_DIR}" )
TARGET_COMPILE_DEFINITIONS ( ${ LIBNAME }
P U B L I C C A R E S _ S T A T I C L I B
P R I V A T E H A V E _ C O N F I G _ H = 1
)
TARGET_LINK_LIBRARIES ( ${ LIBNAME } PUBLIC ${ CARES_DEPENDENT_LIBS } )
IF ( CARES_INSTALL )
INSTALL ( TARGETS ${ LIBNAME } DESTINATION ${ CMAKE_INSTALL_LIBDIR } )
ENDIF ( )
# For chain building: add alias targets that look like import libs that would be returned by find_package(Cares).
ADD_LIBRARY ( Cares::cares_static ALIAS ${ LIBNAME } )
IF ( NOT TARGET Cares::cares )
# Only use static for the generic alias if shared lib wasn't built.
ADD_LIBRARY ( Cares::cares ALIAS ${ LIBNAME } )
ENDIF ( )
ENDIF ( )
# Headers installation target
IF ( CARES_INSTALL )
SET ( CARES_HEADERS ares.h ares_version.h ares_dns.h "${PROJECT_BINARY_DIR}/ares_build.h" ares_rules.h )
INSTALL ( FILES ${ CARES_HEADERS } DESTINATION ${ CMAKE_INSTALL_INCLUDEDIR } )
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 Cares::cares CACHE INTERNAL "CARES LIBRARIES" )
# Build ahost
ADD_EXECUTABLE ( ahost ahost.c ${ SAMPLESOURCES } )
TARGET_COMPILE_DEFINITIONS ( ahost PRIVATE HAVE_CONFIG_H=1 )
TARGET_LINK_LIBRARIES ( ahost PRIVATE ${ PROJECT_NAME } )
IF ( CARES_INSTALL )
INSTALL ( TARGETS ahost RUNTIME DESTINATION ${ CMAKE_INSTALL_BINDIR } )
ENDIF ( )
# Build adig
ADD_EXECUTABLE ( adig adig.c ${ SAMPLESOURCES } )
TARGET_COMPILE_DEFINITIONS ( adig PRIVATE HAVE_CONFIG_H=1 )
TARGET_LINK_LIBRARIES ( adig PRIVATE ${ PROJECT_NAME } )
IF ( CARES_INSTALL )
INSTALL ( TARGETS adig RUNTIME DESTINATION ${ CMAKE_INSTALL_BINDIR } )
ENDIF ( )
# Build acountry
ADD_EXECUTABLE ( acountry acountry.c ${ SAMPLESOURCES } )
TARGET_COMPILE_DEFINITIONS ( acountry PRIVATE HAVE_CONFIG_H=1 )
TARGET_LINK_LIBRARIES ( acountry PRIVATE ${ PROJECT_NAME } )
IF ( CARES_INSTALL )
INSTALL ( TARGETS acountry RUNTIME DESTINATION ${ CMAKE_INSTALL_BINDIR } )
ENDIF ( )
