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96c29900bc
Delete checks and guards for standard C89 headers and assume these are
available: `stdio.h`, `string.h`, `time.h`, `setjmp.h`, `stdlib.h`,
`stddef.h`, `signal.h`.
Some of these we already used unconditionally, some others we only used
for feature checks.
Follow-up to 9c7165e96a #11918 (for `stdio.h` in CMake)
Closes #11940
136 lines
3.8 KiB
CMake
136 lines
3.8 KiB
CMake
#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at https://curl.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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# SPDX-License-Identifier: curl
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#
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###########################################################################
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include(CheckCSourceCompiles)
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# The begin of the sources (macros and includes)
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set(_source_epilogue "#undef inline")
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macro(add_header_include check header)
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if(${check})
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set(_source_epilogue "${_source_epilogue}\n#include <${header}>")
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endif()
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endmacro()
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set(signature_call_conv)
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if(HAVE_WINDOWS_H)
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add_header_include(HAVE_WINSOCK2_H "winsock2.h")
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add_header_include(HAVE_WINDOWS_H "windows.h")
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set(_source_epilogue
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"${_source_epilogue}\n#ifndef WIN32_LEAN_AND_MEAN\n#define WIN32_LEAN_AND_MEAN\n#endif")
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set(signature_call_conv "PASCAL")
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if(WIN32)
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set(CMAKE_REQUIRED_LIBRARIES ws2_32)
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endif()
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else()
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add_header_include(HAVE_SYS_TYPES_H "sys/types.h")
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add_header_include(HAVE_SYS_SOCKET_H "sys/socket.h")
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endif()
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set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
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check_c_source_compiles("${_source_epilogue}
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int main(void) {
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int flag = MSG_NOSIGNAL;
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(void)flag;
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return 0;
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}" HAVE_MSG_NOSIGNAL)
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if(NOT HAVE_WINDOWS_H)
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add_header_include(HAVE_SYS_TIME_H "sys/time.h")
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add_header_include(TIME_WITH_SYS_TIME "time.h")
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endif()
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check_c_source_compiles("${_source_epilogue}
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#include <time.h>
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int main(void) {
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struct timeval ts;
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ts.tv_sec = 0;
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ts.tv_usec = 0;
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(void)ts;
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return 0;
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}" HAVE_STRUCT_TIMEVAL)
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if(HAVE_WINDOWS_H)
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set(CMAKE_EXTRA_INCLUDE_FILES winsock2.h)
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else()
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set(CMAKE_EXTRA_INCLUDE_FILES)
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if(HAVE_SYS_SOCKET_H)
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set(CMAKE_EXTRA_INCLUDE_FILES sys/socket.h)
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endif()
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endif()
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check_type_size("struct sockaddr_storage" SIZEOF_STRUCT_SOCKADDR_STORAGE)
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if(HAVE_SIZEOF_STRUCT_SOCKADDR_STORAGE)
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set(HAVE_STRUCT_SOCKADDR_STORAGE 1)
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endif()
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unset(CMAKE_TRY_COMPILE_TARGET_TYPE)
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if(NOT CMAKE_CROSSCOMPILING)
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if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND NOT ${CMAKE_SYSTEM_NAME} MATCHES "iOS")
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# only try this on non-apple platforms
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# if not cross-compilation...
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include(CheckCSourceRuns)
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set(CMAKE_REQUIRED_FLAGS "")
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if(HAVE_SYS_POLL_H)
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set(CMAKE_REQUIRED_FLAGS "-DHAVE_SYS_POLL_H")
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elseif(HAVE_POLL_H)
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set(CMAKE_REQUIRED_FLAGS "-DHAVE_POLL_H")
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endif()
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check_c_source_runs("
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#include <stdlib.h>
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#include <sys/time.h>
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#ifdef HAVE_SYS_POLL_H
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# include <sys/poll.h>
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#elif HAVE_POLL_H
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# include <poll.h>
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#endif
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int main(void)
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{
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if(0 != poll(0, 0, 10)) {
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return 1; /* fail */
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}
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else {
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/* detect the 10.12 poll() breakage */
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struct timeval before, after;
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int rc;
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size_t us;
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gettimeofday(&before, NULL);
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rc = poll(NULL, 0, 500);
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gettimeofday(&after, NULL);
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us = (after.tv_sec - before.tv_sec) * 1000000 +
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(after.tv_usec - before.tv_usec);
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if(us < 400000) {
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return 1;
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}
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}
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return 0;
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}" HAVE_POLL_FINE)
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endif()
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endif()
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