1#*************************************************************************** 2# _ _ ____ _ 3# Project ___| | | | _ \| | 4# / __| | | | |_) | | 5# | (__| |_| | _ <| |___ 6# \___|\___/|_| \_\_____| 7# 8# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 9# 10# This software is licensed as described in the file COPYING, which 11# you should have received as part of this distribution. The terms 12# are also available at https://curl.se/docs/copyright.html. 13# 14# You may opt to use, copy, modify, merge, publish, distribute and/or sell 15# copies of the Software, and permit persons to whom the Software is 16# furnished to do so, under the terms of the COPYING file. 17# 18# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19# KIND, either express or implied. 20# 21# SPDX-License-Identifier: curl 22# 23########################################################################### 24include(CheckCSourceCompiles) 25include(CheckCSourceRuns) 26include(CheckTypeSize) 27 28macro(add_header_include check header) 29 if(${check}) 30 set(_source_epilogue "${_source_epilogue} 31 #include <${header}>") 32 endif() 33endmacro() 34 35set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY) 36 37if(NOT DEFINED HAVE_STRUCT_SOCKADDR_STORAGE) 38 set(CMAKE_EXTRA_INCLUDE_FILES) 39 if(WIN32) 40 set(CMAKE_EXTRA_INCLUDE_FILES "winsock2.h") 41 set(CMAKE_REQUIRED_DEFINITIONS "-DWIN32_LEAN_AND_MEAN") 42 set(CMAKE_REQUIRED_LIBRARIES "ws2_32") 43 elseif(HAVE_SYS_SOCKET_H) 44 set(CMAKE_EXTRA_INCLUDE_FILES "sys/socket.h") 45 endif() 46 check_type_size("struct sockaddr_storage" SIZEOF_STRUCT_SOCKADDR_STORAGE) 47 set(HAVE_STRUCT_SOCKADDR_STORAGE ${HAVE_SIZEOF_STRUCT_SOCKADDR_STORAGE}) 48endif() 49 50if(NOT WIN32) 51 set(_source_epilogue "#undef inline") 52 add_header_include(HAVE_SYS_TYPES_H "sys/types.h") 53 add_header_include(HAVE_SYS_SOCKET_H "sys/socket.h") 54 check_c_source_compiles("${_source_epilogue} 55 int main(void) 56 { 57 int flag = MSG_NOSIGNAL; 58 (void)flag; 59 return 0; 60 }" HAVE_MSG_NOSIGNAL) 61endif() 62 63set(_source_epilogue "#undef inline") 64add_header_include(HAVE_SYS_TIME_H "sys/time.h") 65check_c_source_compiles("${_source_epilogue} 66 #include <time.h> 67 int main(void) 68 { 69 struct timeval ts; 70 ts.tv_sec = 0; 71 ts.tv_usec = 0; 72 (void)ts; 73 return 0; 74 }" HAVE_STRUCT_TIMEVAL) 75 76unset(CMAKE_TRY_COMPILE_TARGET_TYPE) 77 78if(NOT CMAKE_CROSSCOMPILING AND NOT APPLE) 79 set(_source_epilogue "#undef inline") 80 add_header_include(HAVE_SYS_POLL_H "sys/poll.h") 81 add_header_include(HAVE_POLL_H "poll.h") 82 check_c_source_runs("${_source_epilogue} 83 #include <stdlib.h> 84 #include <sys/time.h> 85 int main(void) 86 { 87 if(0 != poll(0, 0, 10)) { 88 return 1; /* fail */ 89 } 90 else { 91 /* detect the 10.12 poll() breakage */ 92 struct timeval before, after; 93 int rc; 94 size_t us; 95 96 gettimeofday(&before, NULL); 97 rc = poll(NULL, 0, 500); 98 gettimeofday(&after, NULL); 99 100 us = (after.tv_sec - before.tv_sec) * 1000000 + 101 (after.tv_usec - before.tv_usec); 102 103 if(us < 400000) { 104 return 1; 105 } 106 } 107 return 0; 108 }" HAVE_POLL_FINE) 109endif() 110 111# Detect HAVE_GETADDRINFO_THREADSAFE 112 113if(WIN32) 114 set(HAVE_GETADDRINFO_THREADSAFE ${HAVE_GETADDRINFO}) 115elseif(NOT HAVE_GETADDRINFO) 116 set(HAVE_GETADDRINFO_THREADSAFE FALSE) 117elseif(APPLE OR 118 CMAKE_SYSTEM_NAME STREQUAL "AIX" OR 119 CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR 120 CMAKE_SYSTEM_NAME STREQUAL "HP-UX" OR 121 CMAKE_SYSTEM_NAME STREQUAL "MidnightBSD" OR 122 CMAKE_SYSTEM_NAME STREQUAL "NetBSD" OR 123 CMAKE_SYSTEM_NAME STREQUAL "SunOS") 124 set(HAVE_GETADDRINFO_THREADSAFE TRUE) 125elseif(CMAKE_SYSTEM_NAME MATCHES "BSD") 126 set(HAVE_GETADDRINFO_THREADSAFE FALSE) 127endif() 128 129if(NOT DEFINED HAVE_GETADDRINFO_THREADSAFE) 130 set(_source_epilogue "#undef inline") 131 add_header_include(HAVE_SYS_SOCKET_H "sys/socket.h") 132 add_header_include(HAVE_SYS_TIME_H "sys/time.h") 133 add_header_include(HAVE_NETDB_H "netdb.h") 134 check_c_source_compiles("${_source_epilogue} 135 int main(void) 136 { 137 #ifdef h_errno 138 return 0; 139 #else 140 force compilation error 141 #endif 142 }" HAVE_H_ERRNO) 143 144 if(NOT HAVE_H_ERRNO) 145 check_c_source_compiles("${_source_epilogue} 146 int main(void) 147 { 148 h_errno = 2; 149 return h_errno != 0 ? 1 : 0; 150 }" HAVE_H_ERRNO_ASSIGNABLE) 151 152 if(NOT HAVE_H_ERRNO_ASSIGNABLE) 153 check_c_source_compiles("${_source_epilogue} 154 int main(void) 155 { 156 #if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200809L) 157 return 0; 158 #elif defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE >= 700) 159 return 0; 160 #else 161 force compilation error 162 #endif 163 }" HAVE_H_ERRNO_SBS_ISSUE_7) 164 endif() 165 endif() 166 167 if(HAVE_H_ERRNO OR HAVE_H_ERRNO_ASSIGNABLE OR HAVE_H_ERRNO_SBS_ISSUE_7) 168 set(HAVE_GETADDRINFO_THREADSAFE TRUE) 169 endif() 170endif() 171 172if(NOT WIN32 AND NOT DEFINED HAVE_CLOCK_GETTIME_MONOTONIC_RAW) 173 set(_source_epilogue "#undef inline") 174 add_header_include(HAVE_SYS_TYPES_H "sys/types.h") 175 add_header_include(HAVE_SYS_TIME_H "sys/time.h") 176 check_c_source_compiles("${_source_epilogue} 177 #include <time.h> 178 int main(void) 179 { 180 struct timespec ts; 181 (void)clock_gettime(CLOCK_MONOTONIC_RAW, &ts); 182 return 0; 183 }" HAVE_CLOCK_GETTIME_MONOTONIC_RAW) 184endif() 185
