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curl/CMake/CurlTests.c
Viktor Szakats 6ab1fa423b
cmake: fix/add missing feature detections for Windows/MS-DOS 
Almost all feature detection results are pre-filled on Windows
for performance, so none of the issues fixed here affected builds.

For good measure, this patch add missing detections and fixes others
to make sure they work even when omitting the pre-fill.

It also fixes detecting IPv6 for MS-DOS.

- fix `HAVE_STRUCT_TIMEVAL` detection for MSVC.
  Follow-up to c1bc090d65 #12495
- add `HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID` detection for Windows.
- fix `HAVE_STRDUP` detection for MSVC.
- fix `HAVE_SNPRINTF` detection for Windows.
  Regression from 8e34505776 #15164
- fix `HAVE_IOCTLSOCKET` detection for non-UWP MSVC.
- exclude `if_nametoindex` detection for Windows.
  Although it exists on Windows, detection, usage and availability is
  complicated, and curl doesn't use it on this platform.
  Regression from 8e34505776 #15164
- move IPv6 detections so that pre-filling and MS-DOS Watt-32
  configuration applies to them. This fixes
  `HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID` detection with MS-DOS.
  Ref: https://github.com/curl/curl/actions/runs/13260511764/job/37015877585#step:7:306
  Follow-up to a3585c9576 #15543

Also:
- add debug option to test without pre-filling.
- replace `NOT LESS` with `GREATER_EQUAL`

Closes #16278
2025-02-11 14:15:40 +01:00

413 lines
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#ifdef HAVE_FCNTL_O_NONBLOCK
/* headers for FCNTL_O_NONBLOCK test */
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
/* */
#if defined(sun) || defined(__sun__) || \
defined(__SUNPRO_C) || defined(__SUNPRO_CC)
# if defined(__SVR4) || defined(__srv4__)
# define PLATFORM_SOLARIS
# else
# define PLATFORM_SUNOS4
# endif
#endif
#if (defined(_AIX) || defined(__xlC__)) && !defined(_AIX41)
# define PLATFORM_AIX_V3
#endif
/* */
#if defined(PLATFORM_SUNOS4) || defined(PLATFORM_AIX_V3)
#error "O_NONBLOCK does not work on this platform"
#endif
int main(void)
{
/* O_NONBLOCK source test */
int flags = 0;
if(0 != fcntl(0, F_SETFL, flags | O_NONBLOCK))
return 1;
return 0;
}
#endif
/* tests for gethostbyname_r */
#if defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT) || \
defined(HAVE_GETHOSTBYNAME_R_5_REENTRANT) || \
defined(HAVE_GETHOSTBYNAME_R_6_REENTRANT)
# define _REENTRANT
/* no idea whether _REENTRANT is always set, just invent a new flag */
# define TEST_GETHOSTBYFOO_REENTRANT
#endif
#if defined(HAVE_GETHOSTBYNAME_R_3) || \
defined(HAVE_GETHOSTBYNAME_R_5) || \
defined(HAVE_GETHOSTBYNAME_R_6) || \
defined(TEST_GETHOSTBYFOO_REENTRANT)
#include <sys/types.h>
#include <netdb.h>
int main(void)
{
const char *address = "example.com";
int length = 0;
int type = 0;
struct hostent h;
int rc = 0;
#if defined(HAVE_GETHOSTBYNAME_R_3) || \
defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT)
struct hostent_data hdata;
#elif defined(HAVE_GETHOSTBYNAME_R_5) || \
defined(HAVE_GETHOSTBYNAME_R_5_REENTRANT) || \
defined(HAVE_GETHOSTBYNAME_R_6) || \
defined(HAVE_GETHOSTBYNAME_R_6_REENTRANT)
char buffer[8192];
int h_errnop;
struct hostent *hp;
#endif
#if defined(HAVE_GETHOSTBYNAME_R_3) || \
defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT)
rc = gethostbyname_r(address, &h, &hdata);
#elif defined(HAVE_GETHOSTBYNAME_R_5) || \
defined(HAVE_GETHOSTBYNAME_R_5_REENTRANT)
rc = gethostbyname_r(address, &h, buffer, 8192, &h_errnop);
(void)hp; /* not used for test */
#elif defined(HAVE_GETHOSTBYNAME_R_6) || \
defined(HAVE_GETHOSTBYNAME_R_6_REENTRANT)
rc = gethostbyname_r(address, &h, buffer, 8192, &hp, &h_errnop);
#endif
(void)length;
(void)type;
(void)rc;
return 0;
}
#endif
#ifdef HAVE_IN_ADDR_T
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
int main(void)
{
if((in_addr_t *) 0)
return 0;
if(sizeof(in_addr_t))
return 0;
;
return 0;
}
#endif
#ifdef HAVE_BOOL_T
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_STDBOOL_H
#include <stdbool.h>
#endif
int main(void)
{
if(sizeof(bool *))
return 0;
;
return 0;
}
#endif
#ifdef STDC_HEADERS
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <float.h>
int main(void) { return 0; }
#endif
#ifdef HAVE_FILE_OFFSET_BITS
#undef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 64
#include <sys/types.h>
/* Check that off_t can represent 2**63 - 1 correctly.
We cannot simply define LARGE_OFF_T to be 9223372036854775807,
since some C++ compilers masquerading as C compilers
incorrectly reject 9223372036854775807. */
#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
&& LARGE_OFF_T % 2147483647 == 1)
? 1 : -1];
int main(void) { return 0; }
#endif
#ifdef HAVE_IOCTLSOCKET
#ifdef _WIN32
# include <winsock2.h>
#endif
int main(void)
{
/* ioctlsocket source code */
int socket = -1;
unsigned long flags = ioctlsocket(socket, FIONBIO, &flags);
;
return 0;
}
#endif
#ifdef HAVE_IOCTLSOCKET_CAMEL
#include <proto/bsdsocket.h>
int main(void)
{
/* IoctlSocket source code */
if(0 != IoctlSocket(0, 0, 0))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_IOCTLSOCKET_CAMEL_FIONBIO
#include <proto/bsdsocket.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
int main(void)
{
/* IoctlSocket source code */
long flags = 0;
if(0 != IoctlSocket(0, FIONBIO, &flags))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_IOCTLSOCKET_FIONBIO
#ifdef _WIN32
# include <winsock2.h>
#endif
int main(void)
{
unsigned long flags = 0;
if(0 != ioctlsocket(0, FIONBIO, &flags))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_IOCTL_FIONBIO
/* headers for FIONBIO test */
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_STROPTS_H
# include <stropts.h>
#endif
int main(void)
{
int flags = 0;
if(0 != ioctl(0, FIONBIO, &flags))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_IOCTL_SIOCGIFADDR
/* headers for FIONBIO test */
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_STROPTS_H
# include <stropts.h>
#endif
#include <net/if.h>
int main(void)
{
struct ifreq ifr;
if(0 != ioctl(0, SIOCGIFADDR, &ifr))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_SETSOCKOPT_SO_NONBLOCK
#ifdef _WIN32
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
int main(void)
{
if(0 != setsockopt(0, SOL_SOCKET, SO_NONBLOCK, 0, 0))
return 1;
;
return 0;
}
#endif
#ifdef HAVE_GLIBC_STRERROR_R
#include <string.h>
#include <errno.h>
void check(char c) {}
int main(void)
{
char buffer[1024];
/* This will not compile if strerror_r does not return a char* */
check(strerror_r(EACCES, buffer, sizeof(buffer))[0]);
return 0;
}
#endif
#ifdef HAVE_POSIX_STRERROR_R
#include <string.h>
#include <errno.h>
/* Float, because a pointer cannot be implicitly cast to float */
void check(float f) {}
int main(void)
{
char buffer[1024];
/* This will not compile if strerror_r does not return an int */
check(strerror_r(EACCES, buffer, sizeof(buffer)));
return 0;
}
#endif
#ifdef HAVE_FSETXATTR_6
#include <sys/xattr.h> /* header from libc, not from libattr */
int main(void)
{
fsetxattr(0, 0, 0, 0, 0, 0);
return 0;
}
#endif
#ifdef HAVE_FSETXATTR_5
#include <sys/xattr.h> /* header from libc, not from libattr */
int main(void)
{
fsetxattr(0, 0, 0, 0, 0);
return 0;
}
#endif
#ifdef HAVE_CLOCK_GETTIME_MONOTONIC
#include <time.h>
int main(void)
{
struct timespec ts = {0, 0};
clock_gettime(CLOCK_MONOTONIC, &ts);
return 0;
}
#endif
#ifdef HAVE_BUILTIN_AVAILABLE
int main(void)
{
if(__builtin_available(macOS 10.12, iOS 5.0, *)) {}
return 0;
}
#endif
#ifdef HAVE_ATOMIC
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_STDATOMIC_H
# include <stdatomic.h>
#endif
int main(void)
{
_Atomic int i = 1;
i = 0; /* Force an atomic-write operation. */
return i;
}
#endif
#ifdef HAVE_WIN32_WINNT
#ifdef _WIN32
# ifndef NOGDI
# define NOGDI
# endif
# include <windows.h>
#endif
#define enquote(x) #x
#define expand(x) enquote(x)
#pragma message("_WIN32_WINNT=" expand(_WIN32_WINNT))
int main(void)
{
return 0;
}
#endif
#ifdef MINGW64_VERSION
#ifdef __MINGW32__
# include <_mingw.h>
#endif
#define enquote(x) #x
#define expand(x) enquote(x)
#pragma message("MINGW64_VERSION=" \
expand(__MINGW64_VERSION_MAJOR) "." \
expand(__MINGW64_VERSION_MINOR))
int main(void)
{
return 0;
}
#endif
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