functypes: provide the recv and send arg and return types

This header is for providing the argument types for recv() and send()
when built to not use a dedicated config-[platfor].h file.

Remove the slow brute-force checks from configure and cmake.

This change also removes the use of the types for select, as they were
not used in code.

Closes #9592

lib/functypes.h

@@ -0,0 +1,115 @@
+#ifndef HEADER_CURL_FUNCTYPES_H
+#define HEADER_CURL_FUNCTYPES_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2022, 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
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+/* defaults:
+
+   ssize_t recv(int, void *, size_t, int);
+   ssize_t send(int, const void *, size_t, int);
+
+   If other argument or return types are needed:
+
+   1. For systems that run configure or cmake, the alternatives are provided
+      here.
+   2. For systems with config-*.h files, define them there.
+*/
+
+#ifdef WIN32
+/* int recv(SOCKET, char *, int, int) */
+#define RECV_TYPE_ARG1 SOCKET
+#define RECV_TYPE_ARG2 char *
+#define RECV_TYPE_ARG3 int
+#define RECV_TYPE_RETV int
+
+/* int send(SOCKET, const char *, int, int); */
+#define SEND_TYPE_ARG1 SOCKET
+#define SEND_TYPE_ARG2 char *
+#define SEND_TYPE_ARG3 int
+#define SEND_TYPE_RETV int
+
+#elif defined(__AMIGA__) /* Any AmigaOS flavour */
+
+/* long recv(long, char *, long, long); */
+#define RECV_TYPE_ARG1 long
+#define RECV_TYPE_ARG2 char *
+#define RECV_TYPE_ARG3 long
+#define RECV_TYPE_ARG4 long
+#define RECV_TYPE_RETV long
+
+/* int send(int, const char *, int, int); */
+#define SEND_TYPE_ARG1 int
+#define SEND_TYPE_ARG2 char *
+#define SEND_TYPE_ARG3 int
+#define SEND_TYPE_RETV int
+#endif
+
+
+#ifndef RECV_TYPE_ARG1
+#define RECV_TYPE_ARG1 int
+#endif
+
+#ifndef RECV_TYPE_ARG2
+#define RECV_TYPE_ARG2 void *
+#endif
+
+#ifndef RECV_TYPE_ARG3
+#define RECV_TYPE_ARG3 size_t
+#endif
+
+#ifndef RECV_TYPE_ARG4
+#define RECV_TYPE_ARG4 int
+#endif
+
+#ifndef RECV_TYPE_RETV
+#define RECV_TYPE_RETV ssize_t
+#endif
+
+#ifndef SEND_QUAL_ARG2
+#define SEND_QUAL_ARG2 const
+#endif
+
+#ifndef SEND_TYPE_ARG1
+#define SEND_TYPE_ARG1 int
+#endif
+
+#ifndef SEND_TYPE_ARG2
+#define SEND_TYPE_ARG2 void *
+#endif
+
+#ifndef SEND_TYPE_ARG3
+#define SEND_TYPE_ARG3 size_t
+#endif
+
+#ifndef SEND_TYPE_ARG4
+#define SEND_TYPE_ARG4 int
+#endif
+
+#ifndef SEND_TYPE_RETV
+#define SEND_TYPE_RETV ssize_t
+#endif
+
+#endif /* HEADER_CURL_FUNCTYPES_H */