--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/lib/curl_setup.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,829 @@
+#ifndef HEADER_CURL_SETUP_H
+#define HEADER_CURL_SETUP_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, 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.haxx.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.
+ *
+ ***************************************************************************/
+
+#if defined(BUILDING_LIBCURL) && !defined(CURL_NO_OLDIES)
+#define CURL_NO_OLDIES
+#endif
+
+/*
+ * Define WIN32 when build target is Win32 API
+ */
+
+#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) && \
+    !defined(__SYMBIAN32__)
+#define WIN32
+#endif
+
+#ifdef WIN32
+/*
+ * Don't include unneeded stuff in Windows headers to avoid compiler
+ * warnings and macro clashes.
+ * Make sure to define this macro before including any Windows headers.
+ */
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN
+#  endif
+#  ifndef NOGDI
+#    define NOGDI
+#  endif
+#endif
+
+/*
+ * Include configuration script results or hand-crafted
+ * configuration file for platforms which lack config tool.
+ */
+
+#ifdef HAVE_CONFIG_H
+
+#include "curl_config.h"
+
+#else /* HAVE_CONFIG_H */
+
+#ifdef _WIN32_WCE
+#  include "config-win32ce.h"
+#else
+#  ifdef WIN32
+#    include "config-win32.h"
+#  endif
+#endif
+
+#if defined(macintosh) && defined(__MRC__)
+#  include "config-mac.h"
+#endif
+
+#ifdef __riscos__
+#  include "config-riscos.h"
+#endif
+
+#ifdef __AMIGA__
+#  include "config-amigaos.h"
+#endif
+
+#ifdef __SYMBIAN32__
+#  include "config-symbian.h"
+#endif
+
+#ifdef __OS400__
+#  include "config-os400.h"
+#endif
+
+#ifdef TPF
+#  include "config-tpf.h"
+#endif
+
+#ifdef __VXWORKS__
+#  include "config-vxworks.h"
+#endif
+
+#ifdef __PLAN9__
+#  include "config-plan9.h"
+#endif
+
+#endif /* HAVE_CONFIG_H */
+
+/* ================================================================ */
+/* Definition of preprocessor macros/symbols which modify compiler  */
+/* behavior or generated code characteristics must be done here,   */
+/* as appropriate, before any system header file is included. It is */
+/* also possible to have them defined in the config file included   */
+/* before this point. As a result of all this we frown inclusion of */
+/* system header files in our config files, avoid this at any cost. */
+/* ================================================================ */
+
+/*
+ * AIX 4.3 and newer needs _THREAD_SAFE defined to build
+ * proper reentrant code. Others may also need it.
+ */
+
+#ifdef NEED_THREAD_SAFE
+#  ifndef _THREAD_SAFE
+#    define _THREAD_SAFE
+#  endif
+#endif
+
+/*
+ * Tru64 needs _REENTRANT set for a few function prototypes and
+ * things to appear in the system header files. Unixware needs it
+ * to build proper reentrant code. Others may also need it.
+ */
+
+#ifdef NEED_REENTRANT
+#  ifndef _REENTRANT
+#    define _REENTRANT
+#  endif
+#endif
+
+/* Solaris needs this to get a POSIX-conformant getpwuid_r */
+#if defined(sun) || defined(__sun)
+#  ifndef _POSIX_PTHREAD_SEMANTICS
+#    define _POSIX_PTHREAD_SEMANTICS 1
+#  endif
+#endif
+
+/* ================================================================ */
+/*  If you need to include a system header file for your platform,  */
+/*  please, do it beyond the point further indicated in this file.  */
+/* ================================================================ */
+
+#include <curl/curl.h>
+
+#define CURL_SIZEOF_CURL_OFF_T SIZEOF_CURL_OFF_T
+
+/*
+ * Disable other protocols when http is the only one desired.
+ */
+
+#ifdef HTTP_ONLY
+#  ifndef CURL_DISABLE_TFTP
+#    define CURL_DISABLE_TFTP
+#  endif
+#  ifndef CURL_DISABLE_FTP
+#    define CURL_DISABLE_FTP
+#  endif
+#  ifndef CURL_DISABLE_LDAP
+#    define CURL_DISABLE_LDAP
+#  endif
+#  ifndef CURL_DISABLE_TELNET
+#    define CURL_DISABLE_TELNET
+#  endif
+#  ifndef CURL_DISABLE_DICT
+#    define CURL_DISABLE_DICT
+#  endif
+#  ifndef CURL_DISABLE_FILE
+#    define CURL_DISABLE_FILE
+#  endif
+#  ifndef CURL_DISABLE_RTSP
+#    define CURL_DISABLE_RTSP
+#  endif
+#  ifndef CURL_DISABLE_POP3
+#    define CURL_DISABLE_POP3
+#  endif
+#  ifndef CURL_DISABLE_IMAP
+#    define CURL_DISABLE_IMAP
+#  endif
+#  ifndef CURL_DISABLE_SMTP
+#    define CURL_DISABLE_SMTP
+#  endif
+#  ifndef CURL_DISABLE_GOPHER
+#    define CURL_DISABLE_GOPHER
+#  endif
+#  ifndef CURL_DISABLE_SMB
+#    define CURL_DISABLE_SMB
+#  endif
+#endif
+
+/*
+ * When http is disabled rtsp is not supported.
+ */
+
+#if defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_RTSP)
+#  define CURL_DISABLE_RTSP
+#endif
+
+/* ================================================================ */
+/* No system header file shall be included in this file before this */
+/* point. The only allowed ones are those included from curl/system.h */
+/* ================================================================ */
+
+/*
+ * OS/400 setup file includes some system headers.
+ */
+
+#ifdef __OS400__
+#  include "setup-os400.h"
+#endif
+
+/*
+ * VMS setup file includes some system headers.
+ */
+
+#ifdef __VMS
+#  include "setup-vms.h"
+#endif
+
+/*
+ * Use getaddrinfo to resolve the IPv4 address literal. If the current network
+ * interface doesn't support IPv4, but supports IPv6, NAT64, and DNS64,
+ * performing this task will result in a synthesized IPv6 address.
+ */
+#ifdef  __APPLE__
+#define USE_RESOLVE_ON_IPS 1
+#endif
+
+/*
+ * Include header files for windows builds before redefining anything.
+ * Use this preprocessor block only to include or exclude windows.h,
+ * winsock2.h, ws2tcpip.h or winsock.h. Any other windows thing belongs
+ * to any other further and independent block.  Under Cygwin things work
+ * just as under linux (e.g. <sys/socket.h>) and the winsock headers should
+ * never be included when __CYGWIN__ is defined.  configure script takes
+ * care of this, not defining HAVE_WINDOWS_H, HAVE_WINSOCK_H, HAVE_WINSOCK2_H,
+ * neither HAVE_WS2TCPIP_H when __CYGWIN__ is defined.
+ */
+
+#ifdef HAVE_WINDOWS_H
+#  if defined(UNICODE) && !defined(_UNICODE)
+#    define _UNICODE
+#  endif
+#  if defined(_UNICODE) && !defined(UNICODE)
+#    define UNICODE
+#  endif
+#  include <winerror.h>
+#  include <windows.h>
+#  ifdef HAVE_WINSOCK2_H
+#    include <winsock2.h>
+#    ifdef HAVE_WS2TCPIP_H
+#      include <ws2tcpip.h>
+#    endif
+#  else
+#    ifdef HAVE_WINSOCK_H
+#      include <winsock.h>
+#    endif
+#  endif
+#  include <tchar.h>
+#  ifdef UNICODE
+     typedef wchar_t *(*curl_wcsdup_callback)(const wchar_t *str);
+#  endif
+#endif
+
+/*
+ * Define USE_WINSOCK to 2 if we have and use WINSOCK2 API, else
+ * define USE_WINSOCK to 1 if we have and use WINSOCK  API, else
+ * undefine USE_WINSOCK.
+ */
+
+#undef USE_WINSOCK
+
+#ifdef HAVE_WINSOCK2_H
+#  define USE_WINSOCK 2
+#else
+#  ifdef HAVE_WINSOCK_H
+#    define USE_WINSOCK 1
+#  endif
+#endif
+
+#ifdef USE_LWIPSOCK
+#  include <lwip/init.h>
+#  include <lwip/sockets.h>
+#  include <lwip/netdb.h>
+#endif
+
+#ifdef HAVE_EXTRA_STRICMP_H
+#  include <extra/stricmp.h>
+#endif
+
+#ifdef HAVE_EXTRA_STRDUP_H
+#  include <extra/strdup.h>
+#endif
+
+#ifdef TPF
+#  include <strings.h>    /* for bzero, strcasecmp, and strncasecmp */
+#  include <string.h>     /* for strcpy and strlen */
+#  include <stdlib.h>     /* for rand and srand */
+#  include <sys/socket.h> /* for select and ioctl*/
+#  include <netdb.h>      /* for in_addr_t definition */
+#  include <tpf/sysapi.h> /* for tpf_process_signals */
+   /* change which select is used for libcurl */
+#  define select(a,b,c,d,e) tpf_select_libcurl(a,b,c,d,e)
+#endif
+
+#ifdef __VXWORKS__
+#  include <sockLib.h>    /* for generic BSD socket functions */
+#  include <ioLib.h>      /* for basic I/O interface functions */
+#endif
+
+#ifdef __AMIGA__
+#  include <exec/types.h>
+#  include <exec/execbase.h>
+#  include <proto/exec.h>
+#  include <proto/dos.h>
+#  ifdef HAVE_PROTO_BSDSOCKET_H
+#    include <proto/bsdsocket.h> /* ensure bsdsocket.library use */
+#    define select(a,b,c,d,e) WaitSelect(a,b,c,d,e,0)
+#  endif
+#endif
+
+#include <stdio.h>
+#ifdef HAVE_ASSERT_H
+#include <assert.h>
+#endif
+
+#ifdef __TANDEM /* for nsr-tandem-nsk systems */
+#include <floss.h>
+#endif
+
+#ifndef STDC_HEADERS /* no standard C headers! */
+#include <curl/stdcheaders.h>
+#endif
+
+#ifdef __POCC__
+#  include <sys/types.h>
+#  include <unistd.h>
+#  define sys_nerr EILSEQ
+#endif
+
+/*
+ * Salford-C kludge section (mostly borrowed from wxWidgets).
+ */
+#ifdef __SALFORDC__
+  #pragma suppress 353             /* Possible nested comments */
+  #pragma suppress 593             /* Define not used */
+  #pragma suppress 61              /* enum has no name */
+  #pragma suppress 106             /* unnamed, unused parameter */
+  #include <clib.h>
+#endif
+
+/*
+ * Large file (>2Gb) support using WIN32 functions.
+ */
+
+#ifdef USE_WIN32_LARGE_FILES
+#  include <io.h>
+#  include <sys/types.h>
+#  include <sys/stat.h>
+#  undef  lseek
+#  define lseek(fdes,offset,whence)  _lseeki64(fdes, offset, whence)
+#  undef  fstat
+#  define fstat(fdes,stp)            _fstati64(fdes, stp)
+#  undef  stat
+#  define stat(fname,stp)            _stati64(fname, stp)
+#  define struct_stat                struct _stati64
+#  define LSEEK_ERROR                (__int64)-1
+#endif
+
+/*
+ * Small file (<2Gb) support using WIN32 functions.
+ */
+
+#ifdef USE_WIN32_SMALL_FILES
+#  include <io.h>
+#  include <sys/types.h>
+#  include <sys/stat.h>
+#  ifndef _WIN32_WCE
+#    undef  lseek
+#    define lseek(fdes,offset,whence)  _lseek(fdes, (long)offset, whence)
+#    define fstat(fdes,stp)            _fstat(fdes, stp)
+#    define stat(fname,stp)            _stat(fname, stp)
+#    define struct_stat                struct _stat
+#  endif
+#  define LSEEK_ERROR                (long)-1
+#endif
+
+#ifndef struct_stat
+#  define struct_stat struct stat
+#endif
+
+#ifndef LSEEK_ERROR
+#  define LSEEK_ERROR (off_t)-1
+#endif
+
+#ifndef SIZEOF_TIME_T
+/* assume default size of time_t to be 32 bit */
+#define SIZEOF_TIME_T 4
+#endif
+
+/*
+ * Default sizeof(off_t) in case it hasn't been defined in config file.
+ */
+
+#ifndef SIZEOF_OFF_T
+#  if defined(__VMS) && !defined(__VAX)
+#    if defined(_LARGEFILE)
+#      define SIZEOF_OFF_T 8
+#    endif
+#  elif defined(__OS400__) && defined(__ILEC400__)
+#    if defined(_LARGE_FILES)
+#      define SIZEOF_OFF_T 8
+#    endif
+#  elif defined(__MVS__) && defined(__IBMC__)
+#    if defined(_LP64) || defined(_LARGE_FILES)
+#      define SIZEOF_OFF_T 8
+#    endif
+#  elif defined(__370__) && defined(__IBMC__)
+#    if defined(_LP64) || defined(_LARGE_FILES)
+#      define SIZEOF_OFF_T 8
+#    endif
+#  endif
+#  ifndef SIZEOF_OFF_T
+#    define SIZEOF_OFF_T 4
+#  endif
+#endif
+
+#if (SIZEOF_CURL_OFF_T == 4)
+#  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFF)
+#else
+   /* assume CURL_SIZEOF_CURL_OFF_T == 8 */
+#  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFFFFFFFFFF)
+#endif
+#define CURL_OFF_T_MIN (-CURL_OFF_T_MAX - CURL_OFF_T_C(1))
+
+#if (SIZEOF_TIME_T == 4)
+#  ifdef HAVE_TIME_T_UNSIGNED
+#  define TIME_T_MAX UINT_MAX
+#  define TIME_T_MIN 0
+#  else
+#  define TIME_T_MAX INT_MAX
+#  define TIME_T_MIN INT_MIN
+#  endif
+#else
+#  ifdef HAVE_TIME_T_UNSIGNED
+#  define TIME_T_MAX 0xFFFFFFFFFFFFFFFF
+#  define TIME_T_MIN 0
+#  else
+#  define TIME_T_MAX 0x7FFFFFFFFFFFFFFF
+#  define TIME_T_MIN (-TIME_T_MAX - 1)
+#  endif
+#endif
+
+#ifndef SIZE_T_MAX
+/* some limits.h headers have this defined, some don't */
+#if defined(SIZEOF_SIZE_T) && (SIZEOF_SIZE_T > 4)
+#define SIZE_T_MAX 18446744073709551615U
+#else
+#define SIZE_T_MAX 4294967295U
+#endif
+#endif
+
+/*
+ * Arg 2 type for gethostname in case it hasn't been defined in config file.
+ */
+
+#ifndef GETHOSTNAME_TYPE_ARG2
+#  ifdef USE_WINSOCK
+#    define GETHOSTNAME_TYPE_ARG2 int
+#  else
+#    define GETHOSTNAME_TYPE_ARG2 size_t
+#  endif
+#endif
+
+/* Below we define some functions. They should
+
+   4. set the SIGALRM signal timeout
+   5. set dir/file naming defines
+   */
+
+#ifdef WIN32
+
+#  define DIR_CHAR      "\\"
+
+#else /* WIN32 */
+
+#  ifdef MSDOS  /* Watt-32 */
+
+#    include <sys/ioctl.h>
+#    define select(n,r,w,x,t) select_s(n,r,w,x,t)
+#    define ioctl(x,y,z) ioctlsocket(x,y,(char *)(z))
+#    include <tcp.h>
+#    ifdef word
+#      undef word
+#    endif
+#    ifdef byte
+#      undef byte
+#    endif
+
+#  endif /* MSDOS */
+
+#  ifdef __minix
+     /* Minix 3 versions up to at least 3.1.3 are missing these prototypes */
+     extern char *strtok_r(char *s, const char *delim, char **last);
+     extern struct tm *gmtime_r(const time_t * const timep, struct tm *tmp);
+#  endif
+
+#  define DIR_CHAR      "/"
+
+#  ifndef fileno /* sunos 4 have this as a macro! */
+     int fileno(FILE *stream);
+#  endif
+
+#endif /* WIN32 */
+
+/*
+ * msvc 6.0 requires PSDK in order to have INET6_ADDRSTRLEN
+ * defined in ws2tcpip.h as well as to provide IPv6 support.
+ * Does not apply if lwIP is used.
+ */
+
+#if defined(_MSC_VER) && !defined(__POCC__) && !defined(USE_LWIPSOCK)
+#  if !defined(HAVE_WS2TCPIP_H) || \
+     ((_MSC_VER < 1300) && !defined(INET6_ADDRSTRLEN))
+#    undef HAVE_GETADDRINFO_THREADSAFE
+#    undef HAVE_FREEADDRINFO
+#    undef HAVE_GETADDRINFO
+#    undef HAVE_GETNAMEINFO
+#    undef ENABLE_IPV6
+#  endif
+#endif
+
+/* ---------------------------------------------------------------- */
+/*             resolver specialty compile-time defines              */
+/*         CURLRES_* defines to use in the host*.c sources          */
+/* ---------------------------------------------------------------- */
+
+/*
+ * lcc-win32 doesn't have _beginthreadex(), lacks threads support.
+ */
+
+#if defined(__LCC__) && defined(WIN32)
+#  undef USE_THREADS_POSIX
+#  undef USE_THREADS_WIN32
+#endif
+
+/*
+ * MSVC threads support requires a multi-threaded runtime library.
+ * _beginthreadex() is not available in single-threaded ones.
+ */
+
+#if defined(_MSC_VER) && !defined(__POCC__) && !defined(_MT)
+#  undef USE_THREADS_POSIX
+#  undef USE_THREADS_WIN32
+#endif
+
+/*
+ * Mutually exclusive CURLRES_* definitions.
+ */
+
+#ifdef USE_ARES
+#  define CURLRES_ASYNCH
+#  define CURLRES_ARES
+/* now undef the stock libc functions just to avoid them being used */
+#  undef HAVE_GETADDRINFO
+#  undef HAVE_FREEADDRINFO
+#  undef HAVE_GETHOSTBYNAME
+#elif defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
+#  define CURLRES_ASYNCH
+#  define CURLRES_THREADED
+#else
+#  define CURLRES_SYNCH
+#endif
+
+#ifdef ENABLE_IPV6
+#  define CURLRES_IPV6
+#else
+#  define CURLRES_IPV4
+#endif
+
+/* ---------------------------------------------------------------- */
+
+/*
+ * When using WINSOCK, TELNET protocol requires WINSOCK2 API.
+ */
+
+#if defined(USE_WINSOCK) && (USE_WINSOCK != 2)
+#  define CURL_DISABLE_TELNET 1
+#endif
+
+/*
+ * msvc 6.0 does not have struct sockaddr_storage and
+ * does not define IPPROTO_ESP in winsock2.h. But both
+ * are available if PSDK is properly installed.
+ */
+
+#if defined(_MSC_VER) && !defined(__POCC__)
+#  if !defined(HAVE_WINSOCK2_H) || ((_MSC_VER < 1300) && !defined(IPPROTO_ESP))
+#    undef HAVE_STRUCT_SOCKADDR_STORAGE
+#  endif
+#endif
+
+/*
+ * Intentionally fail to build when using msvc 6.0 without PSDK installed.
+ * The brave of heart can circumvent this, defining ALLOW_MSVC6_WITHOUT_PSDK
+ * in lib/config-win32.h although absolutely discouraged and unsupported.
+ */
+
+#if defined(_MSC_VER) && !defined(__POCC__)
+#  if !defined(HAVE_WINDOWS_H) || ((_MSC_VER < 1300) && !defined(_FILETIME_))
+#    if !defined(ALLOW_MSVC6_WITHOUT_PSDK)
+#      error MSVC 6.0 requires "February 2003 Platform SDK" a.k.a. \
+             "Windows Server 2003 PSDK"
+#    else
+#      define CURL_DISABLE_LDAP 1
+#    endif
+#  endif
+#endif
+
+#ifdef NETWARE
+int netware_init(void);
+#ifndef __NOVELL_LIBC__
+#include <sys/bsdskt.h>
+#include <sys/timeval.h>
+#endif
+#endif
+
+#if defined(HAVE_LIBIDN2) && defined(HAVE_IDN2_H) && !defined(USE_WIN32_IDN)
+/* The lib and header are present */
+#define USE_LIBIDN2
+#endif
+
+#if defined(USE_LIBIDN2) && defined(USE_WIN32_IDN)
+#error "Both libidn2 and WinIDN are enabled, choose one."
+#endif
+
+#define LIBIDN_REQUIRED_VERSION "0.4.1"
+
+#if defined(USE_GNUTLS) || defined(USE_OPENSSL) || defined(USE_NSS) || \
+    defined(USE_MBEDTLS) || \
+    defined(USE_WOLFSSL) || defined(USE_SCHANNEL) || \
+    defined(USE_SECTRANSP) || defined(USE_GSKIT) || defined(USE_MESALINK)
+#define USE_SSL    /* SSL support has been enabled */
+#endif
+
+/* Single point where USE_SPNEGO definition might be defined */
+#if !defined(CURL_DISABLE_CRYPTO_AUTH) && \
+    (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))
+#define USE_SPNEGO
+#endif
+
+/* Single point where USE_KERBEROS5 definition might be defined */
+#if !defined(CURL_DISABLE_CRYPTO_AUTH) && \
+    (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))
+#define USE_KERBEROS5
+#endif
+
+/* Single point where USE_NTLM definition might be defined */
+#if !defined(CURL_DISABLE_NTLM) && !defined(CURL_DISABLE_CRYPTO_AUTH)
+#if defined(USE_OPENSSL) || defined(USE_WINDOWS_SSPI) || \
+    defined(USE_GNUTLS) || defined(USE_NSS) || defined(USE_SECTRANSP) || \
+    defined(USE_OS400CRYPTO) || defined(USE_WIN32_CRYPTO) || \
+    defined(USE_MBEDTLS)
+
+#define USE_NTLM
+
+#  if defined(USE_MBEDTLS)
+/* Get definition of MBEDTLS_MD4_C */
+#  include <mbedtls/md4.h>
+#  endif
+
+#endif
+#endif
+
+#ifdef CURL_WANTS_CA_BUNDLE_ENV
+#error "No longer supported. Set CURLOPT_CAINFO at runtime instead."
+#endif
+
+#if defined(USE_LIBSSH2) || defined(USE_LIBSSH) || defined(USE_WOLFSSH)
+#define USE_SSH
+#endif
+
+/*
+ * Provide a mechanism to silence picky compilers, such as gcc 4.6+.
+ * Parameters should of course normally not be unused, but for example when
+ * we have multiple implementations of the same interface it may happen.
+ */
+
+#if defined(__GNUC__) && ((__GNUC__ >= 3) || \
+  ((__GNUC__ == 2) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ >= 7)))
+#  define UNUSED_PARAM __attribute__((__unused__))
+#  define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
+#else
+#  define UNUSED_PARAM /*NOTHING*/
+#  define WARN_UNUSED_RESULT
+#endif
+
+/*
+ * Include macros and defines that should only be processed once.
+ */
+
+#ifndef HEADER_CURL_SETUP_ONCE_H
+#include "curl_setup_once.h"
+#endif
+
+/*
+ * Definition of our NOP statement Object-like macro
+ */
+
+#ifndef Curl_nop_stmt
+#  define Curl_nop_stmt do { } WHILE_FALSE
+#endif
+
+/*
+ * Ensure that Winsock and lwIP TCP/IP stacks are not mixed.
+ */
+
+#if defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H)
+#  if defined(SOCKET) || \
+     defined(USE_WINSOCK) || \
+     defined(HAVE_WINSOCK_H) || \
+     defined(HAVE_WINSOCK2_H) || \
+     defined(HAVE_WS2TCPIP_H)
+#    error "Winsock and lwIP TCP/IP stack definitions shall not coexist!"
+#  endif
+#endif
+
+/*
+ * Portable symbolic names for Winsock shutdown() mode flags.
+ */
+
+#ifdef USE_WINSOCK
+#  define SHUT_RD   0x00
+#  define SHUT_WR   0x01
+#  define SHUT_RDWR 0x02
+#endif
+
+/* Define S_ISREG if not defined by system headers, f.e. MSVC */
+#if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
+#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
+#endif
+
+/* Define S_ISDIR if not defined by system headers, f.e. MSVC */
+#if !defined(S_ISDIR) && defined(S_IFMT) && defined(S_IFDIR)
+#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+#endif
+
+/* In Windows the default file mode is text but an application can override it.
+Therefore we specify it explicitly. https://github.com/curl/curl/pull/258
+*/
+#if defined(WIN32) || defined(MSDOS)
+#define FOPEN_READTEXT "rt"
+#define FOPEN_WRITETEXT "wt"
+#define FOPEN_APPENDTEXT "at"
+#elif defined(__CYGWIN__)
+/* Cygwin has specific behavior we need to address when WIN32 is not defined.
+https://cygwin.com/cygwin-ug-net/using-textbinary.html
+For write we want our output to have line endings of LF and be compatible with
+other Cygwin utilities. For read we want to handle input that may have line
+endings either CRLF or LF so 't' is appropriate.
+*/
+#define FOPEN_READTEXT "rt"
+#define FOPEN_WRITETEXT "w"
+#define FOPEN_APPENDTEXT "a"
+#else
+#define FOPEN_READTEXT "r"
+#define FOPEN_WRITETEXT "w"
+#define FOPEN_APPENDTEXT "a"
+#endif
+
+/* WinSock destroys recv() buffer when send() failed.
+ * Enabled automatically for Windows and for Cygwin as Cygwin sockets are
+ * wrappers for WinSock sockets. https://github.com/curl/curl/issues/657
+ * Define DONT_USE_RECV_BEFORE_SEND_WORKAROUND to force disable workaround.
+ */
+#if !defined(DONT_USE_RECV_BEFORE_SEND_WORKAROUND)
+#  if defined(WIN32) || defined(__CYGWIN__)
+#    define USE_RECV_BEFORE_SEND_WORKAROUND
+#  endif
+#else  /* DONT_USE_RECV_BEFORE_SEND_WORKAROUND */
+#  ifdef USE_RECV_BEFORE_SEND_WORKAROUND
+#    undef USE_RECV_BEFORE_SEND_WORKAROUND
+#  endif
+#endif /* DONT_USE_RECV_BEFORE_SEND_WORKAROUND */
+
+/* Detect Windows App environment which has a restricted access
+ * to the Win32 APIs. */
+# if (defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0602)) || \
+  defined(WINAPI_FAMILY)
+#  include <winapifamily.h>
+#  if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) &&  \
+     !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+#    define CURL_WINDOWS_APP
+#  endif
+# endif
+
+/* for systems that don't detect this in configure, use a sensible default */
+#ifndef CURL_SA_FAMILY_T
+#define CURL_SA_FAMILY_T unsigned short
+#endif
+
+/* Some convenience macros to get the larger/smaller value out of two given.
+   We prefix with CURL to prevent name collisions. */
+#define CURLMAX(x,y) ((x)>(y)?(x):(y))
+#define CURLMIN(x,y) ((x)<(y)?(x):(y))
+
+/* Some versions of the Android SDK is missing the declaration */
+#if defined(HAVE_GETPWUID_R) && defined(HAVE_DECL_GETPWUID_R_MISSING)
+struct passwd;
+int getpwuid_r(uid_t uid, struct passwd *pwd, char *buf,
+               size_t buflen, struct passwd **result);
+#endif
+
+#ifdef DEBUGBUILD
+#define UNITTEST
+#else
+#define UNITTEST static
+#endif
+
+#if defined(USE_NGTCP2) || defined(USE_QUICHE)
+#define ENABLE_QUIC
+#endif
+
+#endif /* HEADER_CURL_SETUP_H */