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diff --git a/extension/curl/system.h b/extension/curl/system.h
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+++ b/extension/curl/system.h
@@ -0,0 +1,521 @@
+#ifndef CURLINC_SYSTEM_H
+#define CURLINC_SYSTEM_H
+/***************************************************************************
+ * _ _ ____ _
+ * 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
+ *
+ ***************************************************************************/
+
+/*
+ * Try to keep one section per platform, compiler and architecture, otherwise,
+ * if an existing section is reused for a different one and later on the
+ * original is adjusted, probably the piggybacking one can be adversely
+ * changed.
+ *
+ * In order to differentiate between platforms/compilers/architectures use
+ * only compiler built in predefined preprocessor symbols.
+ *
+ * curl_off_t
+ * ----------
+ *
+ * For any given platform/compiler curl_off_t must be typedef'ed to a 64-bit
+ * wide signed integral data type. The width of this data type must remain
+ * constant and independent of any possible large file support settings.
+ *
+ * As an exception to the above, curl_off_t shall be typedef'ed to a 32-bit
+ * wide signed integral data type if there is no 64-bit type.
+ *
+ * As a general rule, curl_off_t shall not be mapped to off_t. This rule shall
+ * only be violated if off_t is the only 64-bit data type available and the
+ * size of off_t is independent of large file support settings. Keep your
+ * build on the safe side avoiding an off_t gating. If you have a 64-bit
+ * off_t then take for sure that another 64-bit data type exists, dig deeper
+ * and you will find it.
+ *
+ */
+
+#if defined(__DJGPP__) || defined(__GO32__)
+# if defined(__DJGPP__) && (__DJGPP__ > 1)
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# else
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__SALFORDC__)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__BORLANDC__)
+# if (__BORLANDC__ < 0x520)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# else
+# define CURL_TYPEOF_CURL_OFF_T __int64
+# define CURL_FORMAT_CURL_OFF_T "I64d"
+# define CURL_FORMAT_CURL_OFF_TU "I64u"
+# define CURL_SUFFIX_CURL_OFF_T i64
+# define CURL_SUFFIX_CURL_OFF_TU ui64
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__TURBOC__)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__POCC__)
+# if (__POCC__ < 280)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# elif defined(_MSC_VER)
+# define CURL_TYPEOF_CURL_OFF_T __int64
+# define CURL_FORMAT_CURL_OFF_T "I64d"
+# define CURL_FORMAT_CURL_OFF_TU "I64u"
+# define CURL_SUFFIX_CURL_OFF_T i64
+# define CURL_SUFFIX_CURL_OFF_TU ui64
+# else
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__LCC__)
+# if defined(__MCST__) /* MCST eLbrus Compiler Collection */
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_SYS_SOCKET_H 1
+# else /* Local (or Little) C Compiler */
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+# endif
+
+#elif defined(__SYMBIAN32__)
+# if defined(__EABI__) /* Treat all ARM compilers equally */
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# elif defined(__CW32__)
+# pragma longlong on
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# elif defined(__VC32__)
+# define CURL_TYPEOF_CURL_OFF_T __int64
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T unsigned int
+
+#elif defined(macintosh)
+# include <ConditionalMacros.h>
+# if TYPE_LONGLONG
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# else
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T unsigned int
+
+#elif defined(__TANDEM)
+# if ! defined(__LP64)
+ /* Required for 32-bit NonStop builds only. */
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+# endif
+
+#elif defined(_WIN32_WCE)
+# define CURL_TYPEOF_CURL_OFF_T __int64
+# define CURL_FORMAT_CURL_OFF_T "I64d"
+# define CURL_FORMAT_CURL_OFF_TU "I64u"
+# define CURL_SUFFIX_CURL_OFF_T i64
+# define CURL_SUFFIX_CURL_OFF_TU ui64
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__MINGW32__)
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "I64d"
+# define CURL_FORMAT_CURL_OFF_TU "I64u"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_WS2TCPIP_H 1
+
+#elif defined(__VMS)
+# if defined(__VAX)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# else
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T unsigned int
+
+#elif defined(__OS400__)
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_SYS_SOCKET_H 1
+
+#elif defined(__MVS__)
+# if defined(_LONG_LONG)
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# elif defined(_LP64)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# else
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_SYS_SOCKET_H 1
+
+#elif defined(__370__)
+# if defined(__IBMC__) || defined(__IBMCPP__)
+# if defined(_ILP32)
+# elif defined(_LP64)
+# endif
+# if defined(_LONG_LONG)
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# elif defined(_LP64)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# else
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_SYS_SOCKET_H 1
+# endif
+
+#elif defined(TPF)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__TINYC__) /* also known as tcc */
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_SYS_SOCKET_H 1
+
+#elif defined(__SUNPRO_C) || defined(__SUNPRO_CC) /* Oracle Solaris Studio */
+# if !defined(__LP64) && (defined(__ILP32) || \
+ defined(__i386) || \
+ defined(__sparcv8) || \
+ defined(__sparcv8plus))
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# elif defined(__LP64) || \
+ defined(__amd64) || defined(__sparcv9)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_SYS_SOCKET_H 1
+
+#elif defined(__xlc__) /* IBM xlc compiler */
+# if !defined(_LP64)
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# else
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_SYS_SOCKET_H 1
+
+#elif defined(__hpux) /* HP aCC compiler */
+# if !defined(_LP64)
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# else
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_SYS_SOCKET_H 1
+
+/* ===================================== */
+/* KEEP MSVC THE PENULTIMATE ENTRY */
+/* ===================================== */
+
+#elif defined(_MSC_VER)
+# if (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64)
+# define CURL_TYPEOF_CURL_OFF_T __int64
+# define CURL_FORMAT_CURL_OFF_T "I64d"
+# define CURL_FORMAT_CURL_OFF_TU "I64u"
+# define CURL_SUFFIX_CURL_OFF_T i64
+# define CURL_SUFFIX_CURL_OFF_TU ui64
+# else
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+/* ===================================== */
+/* KEEP GENERIC GCC THE LAST ENTRY */
+/* ===================================== */
+
+#elif defined(__GNUC__) && !defined(_SCO_DS)
+# if !defined(__LP64__) && \
+ (defined(__ILP32__) || defined(__i386__) || defined(__hppa__) || \
+ defined(__ppc__) || defined(__powerpc__) || defined(__arm__) || \
+ defined(__sparc__) || defined(__mips__) || defined(__sh__) || \
+ defined(__XTENSA__) || \
+ (defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 4) || \
+ (defined(__LONG_MAX__) && __LONG_MAX__ == 2147483647L))
+# define CURL_TYPEOF_CURL_OFF_T long long
+# define CURL_FORMAT_CURL_OFF_T "lld"
+# define CURL_FORMAT_CURL_OFF_TU "llu"
+# define CURL_SUFFIX_CURL_OFF_T LL
+# define CURL_SUFFIX_CURL_OFF_TU ULL
+# elif defined(__LP64__) || \
+ defined(__x86_64__) || defined(__ppc64__) || defined(__sparc64__) || \
+ defined(__e2k__) || \
+ (defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 8) || \
+ (defined(__LONG_MAX__) && __LONG_MAX__ == 9223372036854775807L)
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# endif
+# define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+# define CURL_PULL_SYS_TYPES_H 1
+# define CURL_PULL_SYS_SOCKET_H 1
+
+#else
+/* generic "safe guess" on old 32 bit style */
+# define CURL_TYPEOF_CURL_OFF_T long
+# define CURL_FORMAT_CURL_OFF_T "ld"
+# define CURL_FORMAT_CURL_OFF_TU "lu"
+# define CURL_SUFFIX_CURL_OFF_T L
+# define CURL_SUFFIX_CURL_OFF_TU UL
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+#endif
+
+#ifdef _AIX
+/* AIX needs <sys/poll.h> */
+#define CURL_PULL_SYS_POLL_H
+#endif
+
+
+/* CURL_PULL_WS2TCPIP_H is defined above when inclusion of header file */
+/* ws2tcpip.h is required here to properly make type definitions below. */
+#ifdef CURL_PULL_WS2TCPIP_H
+# include <winsock2.h>
+# include <windows.h>
+# include <ws2tcpip.h>
+#endif
+
+/* CURL_PULL_SYS_TYPES_H is defined above when inclusion of header file */
+/* sys/types.h is required here to properly make type definitions below. */
+#ifdef CURL_PULL_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+/* CURL_PULL_SYS_SOCKET_H is defined above when inclusion of header file */
+/* sys/socket.h is required here to properly make type definitions below. */
+#ifdef CURL_PULL_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+
+/* CURL_PULL_SYS_POLL_H is defined above when inclusion of header file */
+/* sys/poll.h is required here to properly make type definitions below. */
+#ifdef CURL_PULL_SYS_POLL_H
+# include <sys/poll.h>
+#endif
+
+/* Data type definition of curl_socklen_t. */
+#ifdef CURL_TYPEOF_CURL_SOCKLEN_T
+ typedef CURL_TYPEOF_CURL_SOCKLEN_T curl_socklen_t;
+#endif
+
+/* Data type definition of curl_off_t. */
+
+#ifdef CURL_TYPEOF_CURL_OFF_T
+ typedef CURL_TYPEOF_CURL_OFF_T curl_off_t;
+#endif
+
+/*
+ * CURL_ISOCPP and CURL_OFF_T_C definitions are done here in order to allow
+ * these to be visible and exported by the external libcurl interface API,
+ * while also making them visible to the library internals, simply including
+ * curl_setup.h, without actually needing to include curl.h internally.
+ * If some day this section would grow big enough, all this should be moved
+ * to its own header file.
+ */
+
+/*
+ * Figure out if we can use the ## preprocessor operator, which is supported
+ * by ISO/ANSI C and C++. Some compilers support it without setting __STDC__
+ * or __cplusplus so we need to carefully check for them too.
+ */
+
+#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) || \
+ defined(__HP_aCC) || defined(__BORLANDC__) || defined(__LCC__) || \
+ defined(__POCC__) || defined(__SALFORDC__) || defined(__HIGHC__) || \
+ defined(__ILEC400__)
+ /* This compiler is believed to have an ISO compatible preprocessor */
+#define CURL_ISOCPP
+#else
+ /* This compiler is believed NOT to have an ISO compatible preprocessor */
+#undef CURL_ISOCPP
+#endif
+
+/*
+ * Macros for minimum-width signed and unsigned curl_off_t integer constants.
+ */
+
+#if defined(__BORLANDC__) && (__BORLANDC__ == 0x0551)
+# define CURLINC_OFF_T_C_HLPR2(x) x
+# define CURLINC_OFF_T_C_HLPR1(x) CURLINC_OFF_T_C_HLPR2(x)
+# define CURL_OFF_T_C(Val) CURLINC_OFF_T_C_HLPR1(Val) ## \
+ CURLINC_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_T)
+# define CURL_OFF_TU_C(Val) CURLINC_OFF_T_C_HLPR1(Val) ## \
+ CURLINC_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_TU)
+#else
+# ifdef CURL_ISOCPP
+# define CURLINC_OFF_T_C_HLPR2(Val,Suffix) Val ## Suffix
+# else
+# define CURLINC_OFF_T_C_HLPR2(Val,Suffix) Val/**/Suffix
+# endif
+# define CURLINC_OFF_T_C_HLPR1(Val,Suffix) CURLINC_OFF_T_C_HLPR2(Val,Suffix)
+# define CURL_OFF_T_C(Val) CURLINC_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_T)
+# define CURL_OFF_TU_C(Val) CURLINC_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_TU)
+#endif
+
+#endif /* CURLINC_SYSTEM_H */