Add OpenBSD port.

cmake/ConfigureChecks.cmake

@@ -1,12 +1,20 @@
+if(CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
+include(CheckIncludeFiles)
+else()
 include(CheckIncludeFile)
+endif()
 check_include_file("arpa/inet.h" HAVE_ARPA_INET_H)
 check_include_file("dlfcn.h" HAVE_DLFCN_H)
 check_include_file("fcntl.h" HAVE_FCNTL_H)
 check_include_file("gssapi/gssapi.h" HAVE_GSSAPI_GSSAPI_H)
 check_include_file("inttypes.h" HAVE_INTTYPES_H)
 check_include_file("netdb.h" HAVE_NETDB_H)
 check_include_file("netinet/in.h" HAVE_NETINET_IN_H)
+if(CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
+check_include_files("sys/types.h;netinet/tcp.h" HAVE_NETINET_TCP_H)
+else()
 check_include_file("netinet/tcp.h" HAVE_NETINET_TCP_H)
+endif()
 check_include_file("poll.h" HAVE_POLL_H)
 check_include_file("stdint.h" HAVE_STDINT_H)
 check_include_file("stdio.h" HAVE_STDIO_H)

include/portable-endian.h

@@ -189,8 +189,6 @@
 #define be64toh(x) _byteswap_uint64(x)
 #define le64toh(x) (x)
 
-#ifdef _XBOX
-
 #ifndef __BYTE_ORDER
 #define __BYTE_ORDER BYTE_ORDER
 #endif
@@ -207,8 +205,6 @@
 #define __PDP_ENDIAN PDP_ENDIAN
 #endif
 
-#endif
-
 #elif defined(__GNUC__) || defined(__clang__)
 
 #define htobe16(x) __builtin_bswap16(x)

lib/compat.h

@@ -750,6 +750,15 @@ int getlogin_r(char *buf, size_t size);
 #endif
 #endif /* __ANDROID__ */
 
+#ifdef __OpenBSD__
+
+#undef ENODATA
+#ifndef ENODATA
+#define ENODATA ENOATTR
+#endif
+
+#endif
+
 #ifdef __cplusplus
 }
 #endif