mirror of
https://github.com/curl/curl.git
synced 2026-07-10 01:07:17 +03:00
1671ebd975
It is traditionally defined by autotools to detect the presence of set of standard C89 headers. autoconf 2.70 (2020-12-08) reduced the headers covered to `stdlib.h`, `string.h`. After 2.59d (2006-06-05) obsoleting it earlier. CMake replicated this detection, and curl included `curl/stdcheaders.h` if standard headers were missing. However, such condition could never happen because curl sources already assume all checked standard headers (`stdarg.h`, `stdlib.h`, `string.h`) and include them unconditionally. Since this is an unused feature detection and an impossible fallback path, drop them from CMake and curl's source. autotools continues to do the detection by default, but its result is unused after this patch. This leaves public `curl/stdcheaders.h` unused from within the codebase. Refs:f0c7c4255386c213d0e3Follow-up to65dae4ad80#22191 Follow-up to4c5307b456Ref:ae1912cb0dCloses #22206
390 lines
7.9 KiB
C
390 lines
7.9 KiB
C
/***************************************************************************
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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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#ifdef HAVE_FCNTL_O_NONBLOCK
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/* headers for FCNTL_O_NONBLOCK test */
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#if defined(sun) || defined(__sun__) || \
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defined(__SUNPRO_C) || defined(__SUNPRO_CC)
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# if defined(__SVR4) || defined(__srv4__)
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# define PLATFORM_SOLARIS
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# else
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# define PLATFORM_SUNOS4
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# endif
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#endif
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#if (defined(_AIX) || defined(__xlC__)) && !defined(_AIX41)
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# define PLATFORM_AIX_V3
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#endif
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#if defined(PLATFORM_SUNOS4) || defined(PLATFORM_AIX_V3)
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#error "O_NONBLOCK does not work on this platform"
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#endif
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int main(void)
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{
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/* O_NONBLOCK source test */
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int flags = 0;
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if(fcntl(0, F_SETFL, flags | O_NONBLOCK))
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return 1;
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return 0;
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}
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#endif
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/* tests for gethostbyname_r */
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#if defined(HAVE_GETHOSTBYNAME_R_3) || \
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defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT) || \
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defined(HAVE_GETHOSTBYNAME_R_5) || \
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defined(HAVE_GETHOSTBYNAME_R_5_REENTRANT) || \
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defined(HAVE_GETHOSTBYNAME_R_6) || \
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defined(HAVE_GETHOSTBYNAME_R_6_REENTRANT)
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#include <sys/types.h>
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#include <netdb.h>
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int main(void)
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{
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const char *address = "localhost";
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struct hostent h;
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int rc = 0;
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#if defined(HAVE_GETHOSTBYNAME_R_3) || \
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defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT)
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struct hostent_data hdata;
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#elif defined(HAVE_GETHOSTBYNAME_R_5) || \
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defined(HAVE_GETHOSTBYNAME_R_5_REENTRANT) || \
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defined(HAVE_GETHOSTBYNAME_R_6) || \
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defined(HAVE_GETHOSTBYNAME_R_6_REENTRANT)
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char buffer[8192];
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struct hostent *hp;
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int h_errnop;
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#endif
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#if defined(HAVE_GETHOSTBYNAME_R_3) || \
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defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT)
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rc = gethostbyname_r(address, &h, &hdata);
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(void)hdata;
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#elif defined(HAVE_GETHOSTBYNAME_R_5) || \
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defined(HAVE_GETHOSTBYNAME_R_5_REENTRANT)
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rc = gethostbyname_r(address, &h, buffer, 8192, &h_errnop);
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(void)hp;
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(void)h_errnop;
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#elif defined(HAVE_GETHOSTBYNAME_R_6) || \
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defined(HAVE_GETHOSTBYNAME_R_6_REENTRANT)
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rc = gethostbyname_r(address, &h, buffer, 8192, &hp, &h_errnop);
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(void)hp;
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(void)h_errnop;
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#endif
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(void)h;
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(void)rc;
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return 0;
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}
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#endif
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#ifdef HAVE_BOOL_T
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_STDBOOL_H
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#include <stdbool.h>
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#endif
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int main(void)
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{
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return (int)sizeof(bool *);
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}
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#endif
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#ifdef HAVE_FILE_OFFSET_BITS
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#include <sys/types.h>
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/* Check that off_t can represent 2**63 - 1 correctly.
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We cannot define LARGE_OFF_T to be 9223372036854775807,
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since some C++ compilers masquerading as C compilers
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incorrectly reject 9223372036854775807. */
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#define LARGE_OFF_T (((off_t)1 << 62) - 1 + ((off_t)1 << 62))
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static int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 &&
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LARGE_OFF_T % 2147483647 == 1)
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? 1 : -1];
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int main(void)
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{
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(void)off_t_is_large;
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return 0;
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}
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#endif
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#ifdef HAVE_IOCTLSOCKET
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#ifdef _WIN32
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# include <winsock2.h>
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#endif
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int main(void)
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{
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/* ioctlsocket source code */
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int socket = -1;
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unsigned long flags = ioctlsocket(socket, FIONBIO, &flags);
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(void)flags;
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return 0;
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}
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#endif
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#ifdef HAVE_IOCTLSOCKET_CAMEL
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#include <proto/bsdsocket.h>
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int main(void)
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{
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/* IoctlSocket source code */
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if(IoctlSocket(0, 0, 0))
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return 1;
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return 0;
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}
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#endif
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#ifdef HAVE_IOCTLSOCKET_CAMEL_FIONBIO
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#include <proto/bsdsocket.h>
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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int main(void)
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{
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/* IoctlSocket source code */
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long flags = 0;
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if(IoctlSocket(0, FIONBIO, &flags))
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return 1;
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(void)flags;
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return 0;
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}
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#endif
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#ifdef HAVE_IOCTLSOCKET_FIONBIO
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#ifdef _WIN32
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# include <winsock2.h>
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#endif
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int main(void)
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{
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unsigned long flags = 0;
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if(ioctlsocket(0, FIONBIO, &flags))
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return 1;
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(void)flags;
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return 0;
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}
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#endif
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#ifdef HAVE_IOCTL_FIONBIO
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/* headers for FIONBIO test */
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifndef _WIN32
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# include <sys/socket.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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#ifdef HAVE_STROPTS_H
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# include <stropts.h>
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#endif
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int main(void)
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{
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int flags = 0;
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if(ioctl(0, FIONBIO, &flags))
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return 1;
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(void)flags;
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return 0;
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}
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#endif
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#ifdef HAVE_IOCTL_SIOCGIFADDR
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/* headers for SIOCGIFADDR test */
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifndef _WIN32
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# include <sys/socket.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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#ifdef HAVE_STROPTS_H
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# include <stropts.h>
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#endif
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#include <net/if.h>
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int main(void)
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{
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struct ifreq ifr;
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if(ioctl(0, SIOCGIFADDR, &ifr))
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return 1;
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(void)ifr;
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return 0;
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}
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#endif
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#ifdef HAVE_SETSOCKOPT_SO_NONBLOCK
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#ifdef _WIN32
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# include <winsock2.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifndef _WIN32
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# include <sys/socket.h>
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#endif
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int main(void)
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{
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if(setsockopt(0, SOL_SOCKET, SO_NONBLOCK, 0, 0))
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return 1;
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return 0;
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}
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#endif
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#ifdef HAVE_GLIBC_STRERROR_R
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#include <string.h>
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#include <errno.h>
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static void check(char c)
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{
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(void)c;
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}
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int main(void)
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{
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char buffer[1024];
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/* This does not compile if strerror_r does not return a char* */
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/* !checksrc! disable ERRNOVAR 1 */
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check(strerror_r(EACCES, buffer, sizeof(buffer))[0]);
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return 0;
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}
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#endif
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#ifdef HAVE_POSIX_STRERROR_R
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#include <string.h>
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#include <errno.h>
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/* Float, because a pointer cannot be implicitly cast to float */
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static void check(float f)
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{
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(void)f;
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}
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int main(void)
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{
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char buffer[1024];
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/* This does not compile if strerror_r does not return an int */
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/* !checksrc! disable ERRNOVAR 1 */
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check(strerror_r(EACCES, buffer, sizeof(buffer)));
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return 0;
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}
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#endif
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#ifdef HAVE_FSETXATTR_6
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#include <sys/xattr.h> /* header from libc, not from libattr */
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int main(void)
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{
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fsetxattr(0, 0, 0, 0, 0, 0);
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return 0;
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}
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#endif
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#ifdef HAVE_FSETXATTR_5
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#include <sys/xattr.h> /* header from libc, not from libattr */
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int main(void)
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{
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fsetxattr(0, "", 0, 0, 0);
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return 0;
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}
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#endif
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#ifdef HAVE_CLOCK_GETTIME_MONOTONIC
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#include <time.h>
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int main(void)
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{
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struct timespec ts;
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(void)clock_gettime(CLOCK_MONOTONIC, &ts);
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(void)ts;
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return 0;
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}
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#endif
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#ifdef HAVE_BUILTIN_AVAILABLE
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int main(void)
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{
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if(__builtin_available(macOS 10.12, iOS 5.0, *)) {}
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return 0;
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}
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#endif
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#ifdef HAVE_ATOMIC
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_STDATOMIC_H
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# include <stdatomic.h>
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#endif
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int main(void)
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{
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_Atomic int i = 1;
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i = 0; /* Force an atomic-write operation. */
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return i;
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}
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#endif
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#ifdef HAVE_WIN32_WINNT
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#ifdef _WIN32
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# ifndef NOGDI
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# define NOGDI
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# endif
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# include <windows.h>
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#endif
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#define enquote(x) #x
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#define expand(x) enquote(x)
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#pragma message("_WIN32_WINNT=" expand(_WIN32_WINNT))
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int main(void)
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{
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return 0;
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}
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#endif
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#ifdef MINGW64_VERSION
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#ifdef __MINGW32__
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# include <_mingw.h>
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#endif
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#define enquote(x) #x
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#define expand(x) enquote(x)
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#pragma message("MINGW64_VERSION=" \
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expand(__MINGW64_VERSION_MAJOR) "." \
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expand(__MINGW64_VERSION_MINOR))
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int main(void)
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{
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return 0;
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}
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#endif
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