FPII-2570: Import clean 7.51.0

Change-Id: I51e115332e3437ce72df75b4a5efbac83a1d37e5
diff --git a/CMake/CheckTypeSize.c.in b/CMake/CheckTypeSize.c.in
deleted file mode 100644
index 8ff07bf..0000000
--- a/CMake/CheckTypeSize.c.in
+++ /dev/null
@@ -1,44 +0,0 @@
-#cmakedefine CHECK_TYPE_SIZE_TYPE @CHECK_TYPE_SIZE_TYPE@
-#ifdef CHECK_TYPE_SIZE_TYPE
-
-@CHECK_TYPE_SIZE_PREINCLUDE@
-#ifdef HAVE_SYS_TYPES_H
-#  include <sys/types.h>
-#endif /* HAVE_SYS_TYPES_H */
-
-#ifdef HAVE_SYS_SOCKET_H
-#  include <sys/socket.h>
-#endif
-
-#ifdef _WIN32
-#  include <winsock2.h>
-#  include <ws2tcpip.h>
-#endif
-
-
-#ifdef HAVE_STDINT_H
-#  include <stdint.h>
-#endif /* HAVE_STDINT_H */
-
-#ifdef HAVE_STDDEF_H
-#  include <stddef.h>
-#endif /* HAVE_STDDEF_H */
-
-@CHECK_TYPE_SIZE_PREMAIN@
-
-#ifdef __CLASSIC_C__
-int main(){
-  int ac;
-  char*av[];
-#else
-int main(int ac, char*av[]){
-#endif
-  if(ac > 1000){return *av[0];}
-  return sizeof(CHECK_TYPE_SIZE_TYPE);
-}
-
-#else  /* CHECK_TYPE_SIZE_TYPE */
-
-#  error "CHECK_TYPE_SIZE_TYPE has to specify the type"
-
-#endif /* CHECK_TYPE_SIZE_TYPE */
diff --git a/CMake/CheckTypeSize.cmake b/CMake/CheckTypeSize.cmake
deleted file mode 100644
index 2c2ceab..0000000
--- a/CMake/CheckTypeSize.cmake
+++ /dev/null
@@ -1,57 +0,0 @@
-# - Check sizeof a type
-#  CHECK_TYPE_SIZE(TYPE VARIABLE)
-# Check if the type exists and determine size of type.  if the type
-# exists, the size will be stored to the variable.
-#
-#  VARIABLE - variable to store size if the type exists.
-#  HAVE_${VARIABLE} - does the variable exists or not
-
-macro(CHECK_TYPE_SIZE TYPE VARIABLE)
-  set(CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS 1)
-  if(NOT DEFINED ${VARIABLE})
-    if("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
-      set(CHECK_TYPE_SIZE_TYPE "${TYPE}")
-      set(MACRO_CHECK_TYPE_SIZE_FLAGS
-        "${CMAKE_REQUIRED_FLAGS}")
-      foreach(def HAVE_SYS_TYPES_H 
-         HAVE_STDINT_H HAVE_STDDEF_H HAVE_SYS_SOCKET_H)
-        if("${def}")
-          set(MACRO_CHECK_TYPE_SIZE_FLAGS
-            "${MACRO_CHECK_TYPE_SIZE_FLAGS} -D${def}")
-        endif("${def}")
-      endforeach(def)
-      set(CHECK_TYPE_SIZE_PREMAIN)
-      foreach(def ${CMAKE_EXTRA_INCLUDE_FILES})
-        set(CHECK_TYPE_SIZE_PREMAIN "${CHECK_TYPE_SIZE_PREMAIN}#include \"${def}\"\n")
-      endforeach(def)
-      configure_file(
-        "${CMAKE_CURRENT_SOURCE_DIR}/CMake/CheckTypeSize.c.in"
-        "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSize.c"
-        IMMEDIATE @ONLY)
-      file(READ
-        "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSize.c"
-        CHECK_TYPE_SIZE_FILE_CONTENT)
-      message(STATUS "Check size of ${TYPE}")
-      if(CMAKE_REQUIRED_LIBRARIES)
-        set(CHECK_TYPE_SIZE_ADD_LIBRARIES
-          "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
-      endif(CMAKE_REQUIRED_LIBRARIES)
-      try_run(${VARIABLE} HAVE_${VARIABLE}
-        ${CMAKE_BINARY_DIR}
-        "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSize.c"
-        CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_TYPE_SIZE_FLAGS}
-        "${CHECK_TYPE_SIZE_ADD_LIBRARIES}"
-        OUTPUT_VARIABLE OUTPUT)
-      if(HAVE_${VARIABLE})
-        message(STATUS "Check size of ${TYPE} - done")
-        file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
-          "Determining size of ${TYPE} passed with the following output:\n${OUTPUT}\n\n")
-      else(HAVE_${VARIABLE})
-        message(STATUS "Check size of ${TYPE} - failed")
-        file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
-          "Determining size of ${TYPE} failed with the following output:\n${OUTPUT}\nCheckTypeSize.c:\n${CHECK_TYPE_SIZE_FILE_CONTENT}\n\n")
-      endif(HAVE_${VARIABLE})
-    endif("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
-  endif(NOT DEFINED ${VARIABLE})
-  set(CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS )
-endmacro(CHECK_TYPE_SIZE)
diff --git a/CMake/CurlCheckCSourceCompiles.cmake b/CMake/CurlCheckCSourceCompiles.cmake
deleted file mode 100644
index b632768..0000000
--- a/CMake/CurlCheckCSourceCompiles.cmake
+++ /dev/null
@@ -1,75 +0,0 @@
-# - Check if the source code provided in the SOURCE argument compiles.
-# CURL_CHECK_C_SOURCE_COMPILES(SOURCE VAR)
-# - macro which checks if the source code compiles
-#  SOURCE   - source code to try to compile
-#  VAR      - variable to store whether the source code compiled
-#
-# The following variables may be set before calling this macro to
-# modify the way the check is run:
-#
-#  CMAKE_REQUIRED_FLAGS = string of compile command line flags
-#  CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
-#  CMAKE_REQUIRED_INCLUDES = list of include directories
-#  CMAKE_REQUIRED_LIBRARIES = list of libraries to link
-
-macro(CURL_CHECK_C_SOURCE_COMPILES SOURCE VAR)
-  if("${VAR}" MATCHES "^${VAR}$" OR "${VAR}" MATCHES "UNKNOWN")
-    set(message "${VAR}")
-    # If the number of arguments is greater than 2 (SOURCE VAR)
-    if(${ARGC} GREATER 2)
-      # then add the third argument as a message
-      set(message "${ARGV2} (${VAR})")
-    endif(${ARGC} GREATER 2)
-    set(MACRO_CHECK_FUNCTION_DEFINITIONS
-      "-D${VAR} ${CMAKE_REQUIRED_FLAGS}")
-    if(CMAKE_REQUIRED_LIBRARIES)
-      set(CURL_CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES
-        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
-    else(CMAKE_REQUIRED_LIBRARIES)
-      set(CURL_CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES)
-    endif(CMAKE_REQUIRED_LIBRARIES)
-    if(CMAKE_REQUIRED_INCLUDES)
-      set(CURL_CHECK_C_SOURCE_COMPILES_ADD_INCLUDES
-        "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
-    else(CMAKE_REQUIRED_INCLUDES)
-      set(CURL_CHECK_C_SOURCE_COMPILES_ADD_INCLUDES)
-    endif(CMAKE_REQUIRED_INCLUDES)
-    set(src "")
-    foreach(def ${EXTRA_DEFINES})
-      set(src "${src}#define ${def} 1\n")
-    endforeach(def)
-    foreach(inc ${HEADER_INCLUDES})
-      set(src "${src}#include <${inc}>\n")
-    endforeach(inc)
-
-    set(src "${src}\nint main() { ${SOURCE} ; return 0; }")
-    set(CMAKE_CONFIGURABLE_FILE_CONTENT "${src}")
-    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/CMake/CMakeConfigurableFile.in
-      "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c"
-      IMMEDIATE)
-    message(STATUS "Performing Test ${message}")
-    try_compile(${VAR}
-      ${CMAKE_BINARY_DIR}
-      ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c
-      COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
-      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
-      "${CURL_CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES}"
-      "${CURL_CHECK_C_SOURCE_COMPILES_ADD_INCLUDES}"
-      OUTPUT_VARIABLE OUTPUT)
-    if(${VAR})
-      set(${VAR} 1 CACHE INTERNAL "Test ${message}")
-      message(STATUS "Performing Test ${message} - Success")
-      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
-        "Performing C SOURCE FILE Test ${message} succeded with the following output:\n"
-        "${OUTPUT}\n"
-        "Source file was:\n${src}\n")
-    else(${VAR})
-      message(STATUS "Performing Test ${message} - Failed")
-      set(${VAR} "" CACHE INTERNAL "Test ${message}")
-      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
-        "Performing C SOURCE FILE Test ${message} failed with the following output:\n"
-        "${OUTPUT}\n"
-        "Source file was:\n${src}\n")
-    endif(${VAR})
-  endif("${VAR}" MATCHES "^${VAR}$" OR "${VAR}" MATCHES "UNKNOWN")
-endmacro(CURL_CHECK_C_SOURCE_COMPILES)
diff --git a/CMake/CurlCheckCSourceRuns.cmake b/CMake/CurlCheckCSourceRuns.cmake
deleted file mode 100644
index 6b14af8..0000000
--- a/CMake/CurlCheckCSourceRuns.cmake
+++ /dev/null
@@ -1,83 +0,0 @@
-# - Check if the source code provided in the SOURCE argument compiles and runs.
-# CURL_CHECK_C_SOURCE_RUNS(SOURCE VAR)
-# - macro which checks if the source code runs
-#  SOURCE   - source code to try to compile
-#  VAR - variable to store size if the type exists.
-#
-# The following variables may be set before calling this macro to
-# modify the way the check is run:
-#
-#  CMAKE_REQUIRED_FLAGS = string of compile command line flags
-#  CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
-#  CMAKE_REQUIRED_INCLUDES = list of include directories
-#  CMAKE_REQUIRED_LIBRARIES = list of libraries to link
-
-macro(CURL_CHECK_C_SOURCE_RUNS SOURCE VAR)
-  if("${VAR}" MATCHES "^${VAR}$" OR "${VAR}" MATCHES "UNKNOWN")
-    set(message "${VAR}")
-    # If the number of arguments is greater than 2 (SOURCE VAR)
-    if(${ARGC} GREATER 2)
-      # then add the third argument as a message
-      set(message "${ARGV2} (${VAR})")
-    endif(${ARGC} GREATER 2)
-    set(MACRO_CHECK_FUNCTION_DEFINITIONS
-      "-D${VAR} ${CMAKE_REQUIRED_FLAGS}")
-    if(CMAKE_REQUIRED_LIBRARIES)
-      set(CURL_CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES
-        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
-    else(CMAKE_REQUIRED_LIBRARIES)
-      set(CURL_CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES)
-    endif(CMAKE_REQUIRED_LIBRARIES)
-    if(CMAKE_REQUIRED_INCLUDES)
-      set(CURL_CHECK_C_SOURCE_COMPILES_ADD_INCLUDES
-        "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
-    else(CMAKE_REQUIRED_INCLUDES)
-      set(CURL_CHECK_C_SOURCE_COMPILES_ADD_INCLUDES)
-    endif(CMAKE_REQUIRED_INCLUDES)
-    set(src "")
-    foreach(def ${EXTRA_DEFINES})
-      set(src "${src}#define ${def} 1\n")
-    endforeach(def)
-    foreach(inc ${HEADER_INCLUDES})
-      set(src "${src}#include <${inc}>\n")
-    endforeach(inc)
-
-    set(src "${src}\nint main() { ${SOURCE} ; return 0; }")
-    set(CMAKE_CONFIGURABLE_FILE_CONTENT "${src}")
-    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/CMake/CMakeConfigurableFile.in
-      "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c"
-      IMMEDIATE)
-    message(STATUS "Performing Test ${message}")
-    try_run(${VAR} ${VAR}_COMPILED
-      ${CMAKE_BINARY_DIR}
-      ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c
-      COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
-      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
-      "${CURL_CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES}"
-      "${CURL_CHECK_C_SOURCE_COMPILES_ADD_INCLUDES}"
-      OUTPUT_VARIABLE OUTPUT)
-    # if it did not compile make the return value fail code of 1
-    if(NOT ${VAR}_COMPILED)
-      set(${VAR} 1)
-    endif(NOT ${VAR}_COMPILED)
-    # if the return value was 0 then it worked
-    set(result_var ${${VAR}})
-    if("${result_var}" EQUAL 0)
-      set(${VAR} 1 CACHE INTERNAL "Test ${message}")
-      message(STATUS "Performing Test ${message} - Success")
-      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
-        "Performing C SOURCE FILE Test ${message} succeded with the following output:\n"
-        "${OUTPUT}\n"
-        "Return value: ${${VAR}}\n"
-        "Source file was:\n${src}\n")
-    else("${result_var}" EQUAL 0)
-      message(STATUS "Performing Test ${message} - Failed")
-      set(${VAR} "" CACHE INTERNAL "Test ${message}")
-      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
-        "Performing C SOURCE FILE Test ${message} failed with the following output:\n"
-        "${OUTPUT}\n"
-        "Return value: ${result_var}\n"
-        "Source file was:\n${src}\n")
-    endif("${result_var}" EQUAL 0)
-  endif("${VAR}" MATCHES "^${VAR}$" OR "${VAR}" MATCHES "UNKNOWN")
-endmacro(CURL_CHECK_C_SOURCE_RUNS)
diff --git a/CMake/CurlSymbolHiding.cmake b/CMake/CurlSymbolHiding.cmake
new file mode 100644
index 0000000..9f7d296
--- /dev/null
+++ b/CMake/CurlSymbolHiding.cmake
@@ -0,0 +1,61 @@
+include(CheckCSourceCompiles)
+
+option(CURL_HIDDEN_SYMBOLS "Set to ON to hide libcurl internal symbols (=hide all symbols that aren't officially external)." ON)
+mark_as_advanced(CURL_HIDDEN_SYMBOLS)
+
+if(CURL_HIDDEN_SYMBOLS)
+    set(SUPPORTS_SYMBOL_HIDING FALSE)
+
+    if(CMAKE_C_COMPILER_ID MATCHES "Clang")
+        set(SUPPORTS_SYMBOL_HIDING TRUE)
+        set(_SYMBOL_EXTERN "__attribute__ ((__visibility__ (\"default\")))")
+        set(_CFLAG_SYMBOLS_HIDE "-fvisibility=hidden")
+    elseif(CMAKE_COMPILER_IS_GNUCC)
+        if(NOT CMAKE_VERSION VERSION_LESS 2.8.10)
+            set(GCC_VERSION ${CMAKE_C_COMPILER_VERSION})
+        else()
+            execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion
+                            OUTPUT_VARIABLE GCC_VERSION)
+        endif()
+        if(NOT GCC_VERSION VERSION_LESS 3.4)
+            # note: this is considered buggy prior to 4.0 but the autotools don't care, so let's ignore that fact
+            set(SUPPORTS_SYMBOL_HIDING TRUE)
+            set(_SYMBOL_EXTERN "__attribute__ ((__visibility__ (\"default\")))")
+            set(_CFLAG_SYMBOLS_HIDE "-fvisibility=hidden")
+        endif()
+    elseif(CMAKE_C_COMPILER_ID MATCHES "SunPro" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 8.0)
+        set(SUPPORTS_SYMBOL_HIDING TRUE)
+        set(_SYMBOL_EXTERN "__global")
+        set(_CFLAG_SYMBOLS_HIDE "-xldscope=hidden")
+    elseif(CMAKE_C_COMPILER_ID MATCHES "Intel" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 9.0)
+        # note: this should probably just check for version 9.1.045 but I'm not 100% sure
+        #       so let's to it the same way autotools do.
+        set(SUPPORTS_SYMBOL_HIDING TRUE)
+        set(_SYMBOL_EXTERN "__attribute__ ((__visibility__ (\"default\")))")
+        set(_CFLAG_SYMBOLS_HIDE "-fvisibility=hidden")
+        check_c_source_compiles("#include <stdio.h>
+            int main (void) { printf(\"icc fvisibility bug test\"); return 0; }" _no_bug)
+        if(NOT _no_bug)
+            set(SUPPORTS_SYMBOL_HIDING FALSE)
+            set(_SYMBOL_EXTERN "")
+            set(_CFLAG_SYMBOLS_HIDE "")
+        endif()
+    elseif(MSVC)
+        set(SUPPORTS_SYMBOL_HIDING TRUE)
+    endif()
+
+    set(HIDES_CURL_PRIVATE_SYMBOLS ${SUPPORTS_SYMBOL_HIDING})
+elseif(MSVC)
+    if(NOT CMAKE_VERSION VERSION_LESS 3.7)
+        set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE) #present since 3.4.3 but broken
+        set(HIDES_CURL_PRIVATE_SYMBOLS FALSE)
+    else()
+        message(WARNING "Hiding private symbols regardless CURL_HIDDEN_SYMBOLS being disabled.")
+        set(HIDES_CURL_PRIVATE_SYMBOLS TRUE)
+    endif()
+elseif()
+    set(HIDES_CURL_PRIVATE_SYMBOLS FALSE)
+endif()
+
+set(CURL_CFLAG_SYMBOLS_HIDE ${_CFLAG_SYMBOLS_HIDE})
+set(CURL_EXTERN_SYMBOL ${_SYMBOL_EXTERN})
diff --git a/CMake/CurlTests.c b/CMake/CurlTests.c
index 0943458..ceff391 100644
--- a/CMake/CurlTests.c
+++ b/CMake/CurlTests.c
@@ -1,3 +1,24 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2014, 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.
+ *
+ ***************************************************************************/
 #ifdef TIME_WITH_SYS_TIME
 /* Time with sys/time test */
 
@@ -50,264 +71,88 @@
 }
 #endif
 
-#ifdef HAVE_GETHOSTBYADDR_R_5
+/* tests for gethostbyaddr_r or gethostbyname_r */
+#if defined(HAVE_GETHOSTBYADDR_R_5_REENTRANT) || \
+    defined(HAVE_GETHOSTBYADDR_R_7_REENTRANT) || \
+    defined(HAVE_GETHOSTBYADDR_R_8_REENTRANT) || \
+    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_GETHOSTBYADDR_R_5) || \
+    defined(HAVE_GETHOSTBYADDR_R_7) || \
+    defined(HAVE_GETHOSTBYADDR_R_8) || \
+    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 ()
+int main(void)
 {
-
-char * address;
-int length;
-int type;
-struct hostent h;
-struct hostent_data hdata;
-int rc;
-#ifndef gethostbyaddr_r
-  (void)gethostbyaddr_r;
+  char *address = "example.com";
+  int length = 0;
+  int type = 0;
+  struct hostent h;
+  int rc = 0;
+#if defined(HAVE_GETHOSTBYADDR_R_5) || \
+    defined(HAVE_GETHOSTBYADDR_R_5_REENTRANT) || \
+    \
+    defined(HAVE_GETHOSTBYNAME_R_3) || \
+    defined(HAVE_GETHOSTBYNAME_R_3_REENTRANT)
+  struct hostent_data hdata;
+#elif defined(HAVE_GETHOSTBYADDR_R_7) || \
+      defined(HAVE_GETHOSTBYADDR_R_7_REENTRANT) || \
+      defined(HAVE_GETHOSTBYADDR_R_8) || \
+      defined(HAVE_GETHOSTBYADDR_R_8_REENTRANT) || \
+      \
+      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
-rc = gethostbyaddr_r(address, length, type, &h, &hdata);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYADDR_R_5_REENTRANT
-#define _REENTRANT
-#include <sys/types.h>
-#include <netdb.h>
-int
-main ()
-{
-
-char * address;
-int length;q
-int type;
-struct hostent h;
-struct hostent_data hdata;
-int rc;
-#ifndef gethostbyaddr_r
-  (void)gethostbyaddr_r;
-#endif
-rc = gethostbyaddr_r(address, length, type, &h, &hdata);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYADDR_R_7
-#include <sys/types.h>
-#include <netdb.h>
-int
-main ()
-{
-
-char * address;
-int length;
-int type;
-struct hostent h;
-char buffer[8192];
-int h_errnop;
-struct hostent * hp;
 
 #ifndef gethostbyaddr_r
   (void)gethostbyaddr_r;
 #endif
-hp = gethostbyaddr_r(address, length, type, &h,
-                     buffer, 8192, &h_errnop);
-  ;
+
+#if   defined(HAVE_GETHOSTBYADDR_R_5) || \
+      defined(HAVE_GETHOSTBYADDR_R_5_REENTRANT)
+  rc = gethostbyaddr_r(address, length, type, &h, &hdata);
+#elif defined(HAVE_GETHOSTBYADDR_R_7) || \
+      defined(HAVE_GETHOSTBYADDR_R_7_REENTRANT)
+  hp = gethostbyaddr_r(address, length, type, &h, buffer, 8192, &h_errnop);
+  (void)hp;
+#elif defined(HAVE_GETHOSTBYADDR_R_8) || \
+      defined(HAVE_GETHOSTBYADDR_R_8_REENTRANT)
+  rc = gethostbyaddr_r(address, length, type, &h, buffer, 8192, &hp, &h_errnop);
+#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_GETHOSTBYADDR_R_7_REENTRANT
-#define _REENTRANT
-#include <sys/types.h>
-#include <netdb.h>
-int
-main ()
-{
 
-char * address;
-int length;
-int type;
-struct hostent h;
-char buffer[8192];
-int h_errnop;
-struct hostent * hp;
-
-#ifndef gethostbyaddr_r
-  (void)gethostbyaddr_r;
-#endif
-hp = gethostbyaddr_r(address, length, type, &h,
-                     buffer, 8192, &h_errnop);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYADDR_R_8
-#include <sys/types.h>
-#include <netdb.h>
-int
-main ()
-{
-
-char * address;
-int length;
-int type;
-struct hostent h;
-char buffer[8192];
-int h_errnop;
-struct hostent * hp;
-int rc;
-
-#ifndef gethostbyaddr_r
-  (void)gethostbyaddr_r;
-#endif
-rc = gethostbyaddr_r(address, length, type, &h,
-                     buffer, 8192, &hp, &h_errnop);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYADDR_R_8_REENTRANT
-#define _REENTRANT
-#include <sys/types.h>
-#include <netdb.h>
-int
-main ()
-{
-
-char * address;
-int length;
-int type;
-struct hostent h;
-char buffer[8192];
-int h_errnop;
-struct hostent * hp;
-int rc;
-
-#ifndef gethostbyaddr_r
-  (void)gethostbyaddr_r;
-#endif
-rc = gethostbyaddr_r(address, length, type, &h,
-                     buffer, 8192, &hp, &h_errnop);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYNAME_R_3
-#include <string.h>
-#include <sys/types.h>
-#include <netdb.h>
-#undef NULL
-#define NULL (void *)0
-
-int
-main ()
-{
-
-struct hostent_data data;
-#ifndef gethostbyname_r
-  (void)gethostbyname_r;
-#endif
-gethostbyname_r(NULL, NULL, NULL);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYNAME_R_3_REENTRANT
-#define _REENTRANT
-#include <string.h>
-#include <sys/types.h>
-#include <netdb.h>
-#undef NULL
-#define NULL (void *)0
-
-int
-main ()
-{
-
-struct hostent_data data;
-#ifndef gethostbyname_r
-  (void)gethostbyname_r;
-#endif
-gethostbyname_r(NULL, NULL, NULL);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYNAME_R_5
-#include <sys/types.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#undef NULL
-#define NULL (void *)0
-
-int
-main ()
-{
-#ifndef gethostbyname_r
-  (void)gethostbyname_r;
-#endif
-gethostbyname_r(NULL, NULL, NULL, 0, NULL);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYNAME_R_5_REENTRANT
-#define _REENTRANT
-#include <sys/types.h>
-#include <netdb.h>
-#undef NULL
-#define NULL (void *)0
-
-int
-main ()
-{
-
-#ifndef gethostbyname_r
-  (void)gethostbyname_r;
-#endif
-gethostbyname_r(NULL, NULL, NULL, 0, NULL);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYNAME_R_6
-#include <sys/types.h>
-#include <netdb.h>
-#undef NULL
-#define NULL (void *)0
-
-int
-main ()
-{
-
-#ifndef gethostbyname_r
-  (void)gethostbyname_r;
-#endif
-gethostbyname_r(NULL, NULL, NULL, 0, NULL, NULL);
-  ;
-  return 0;
-}
-#endif
-#ifdef HAVE_GETHOSTBYNAME_R_6_REENTRANT
-#define _REENTRANT
-#include <sys/types.h>
-#include <netdb.h>
-#undef NULL
-#define NULL (void *)0
-
-int
-main ()
-{
-
-#ifndef gethostbyname_r
-  (void)gethostbyname_r;
-#endif
-gethostbyname_r(NULL, NULL, NULL, 0, NULL, NULL);
-  ;
-  return 0;
-}
-#endif
 #ifdef HAVE_SOCKLEN_T
 #ifdef _WIN32
 #include <ws2tcpip.h>
diff --git a/CMake/FindCARES.cmake b/CMake/FindCARES.cmake
new file mode 100644
index 0000000..c4ab5f1
--- /dev/null
+++ b/CMake/FindCARES.cmake
@@ -0,0 +1,42 @@
+# - Find c-ares
+# Find the c-ares includes and library
+# This module defines
+#  CARES_INCLUDE_DIR, where to find ares.h, etc.
+#  CARES_LIBRARIES, the libraries needed to use c-ares.
+#  CARES_FOUND, If false, do not try to use c-ares.
+# also defined, but not for general use are
+# CARES_LIBRARY, where to find the c-ares library.
+
+FIND_PATH(CARES_INCLUDE_DIR ares.h
+  /usr/local/include
+  /usr/include
+  )
+
+SET(CARES_NAMES ${CARES_NAMES} cares)
+FIND_LIBRARY(CARES_LIBRARY
+  NAMES ${CARES_NAMES}
+  PATHS /usr/lib /usr/local/lib
+  )
+
+IF (CARES_LIBRARY AND CARES_INCLUDE_DIR)
+  SET(CARES_LIBRARIES ${CARES_LIBRARY})
+  SET(CARES_FOUND "YES")
+ELSE (CARES_LIBRARY AND CARES_INCLUDE_DIR)
+  SET(CARES_FOUND "NO")
+ENDIF (CARES_LIBRARY AND CARES_INCLUDE_DIR)
+
+
+IF (CARES_FOUND)
+  IF (NOT CARES_FIND_QUIETLY)
+    MESSAGE(STATUS "Found c-ares: ${CARES_LIBRARIES}")
+  ENDIF (NOT CARES_FIND_QUIETLY)
+ELSE (CARES_FOUND)
+  IF (CARES_FIND_REQUIRED)
+    MESSAGE(FATAL_ERROR "Could not find c-ares library")
+  ENDIF (CARES_FIND_REQUIRED)
+ENDIF (CARES_FOUND)
+
+MARK_AS_ADVANCED(
+  CARES_LIBRARY
+  CARES_INCLUDE_DIR
+  )
diff --git a/CMake/FindGSS.cmake b/CMake/FindGSS.cmake
new file mode 100644
index 0000000..dfaeaf3
--- /dev/null
+++ b/CMake/FindGSS.cmake
@@ -0,0 +1,289 @@
+# - Try to find the GSS Kerberos library
+# Once done this will define
+#
+#  GSS_ROOT_DIR - Set this variable to the root installation of GSS
+#
+# Read-Only variables:
+#  GSS_FOUND - system has the Heimdal library
+#  GSS_FLAVOUR - "MIT" or "Heimdal" if anything found.
+#  GSS_INCLUDE_DIR - the Heimdal include directory
+#  GSS_LIBRARIES - The libraries needed to use GSS
+#  GSS_LINK_DIRECTORIES - Directories to add to linker search path
+#  GSS_LINKER_FLAGS - Additional linker flags
+#  GSS_COMPILER_FLAGS - Additional compiler flags
+#  GSS_VERSION - This is set to version advertised by pkg-config or read from manifest.
+#                In case the library is found but no version info availabe it'll be set to "unknown"
+
+set(_MIT_MODNAME mit-krb5-gssapi)
+set(_HEIMDAL_MODNAME heimdal-gssapi)
+
+include(CheckIncludeFile)
+include(CheckIncludeFiles)
+include(CheckTypeSize)
+
+set(_GSS_ROOT_HINTS
+    "${GSS_ROOT_DIR}"
+    "$ENV{GSS_ROOT_DIR}"
+)
+
+# try to find library using system pkg-config if user didn't specify root dir
+if(NOT GSS_ROOT_DIR AND NOT "$ENV{GSS_ROOT_DIR}")
+    if(UNIX)
+        find_package(PkgConfig QUIET)
+        pkg_search_module(_GSS_PKG ${_MIT_MODNAME} ${_HEIMDAL_MODNAME})
+        list(APPEND _GSS_ROOT_HINTS "${_GSS_PKG_PREFIX}")
+    elseif(WIN32)
+        list(APPEND _GSS_ROOT_HINTS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos;InstallDir]")
+    endif()
+endif()
+
+if(NOT _GSS_FOUND) #not found by pkg-config. Let's take more traditional approach.
+    find_file(_GSS_CONFIGURE_SCRIPT
+        NAMES
+            "krb5-config"
+        HINTS
+            ${_GSS_ROOT_HINTS}
+        PATH_SUFFIXES
+            bin
+        NO_CMAKE_PATH
+        NO_CMAKE_ENVIRONMENT_PATH
+    )
+
+    # if not found in user-supplied directories, maybe system knows better
+    find_file(_GSS_CONFIGURE_SCRIPT
+        NAMES
+            "krb5-config"
+        PATH_SUFFIXES
+            bin
+    )
+
+    if(_GSS_CONFIGURE_SCRIPT)
+        execute_process(
+            COMMAND ${_GSS_CONFIGURE_SCRIPT} "--cflags" "gssapi"
+            OUTPUT_VARIABLE _GSS_CFLAGS
+            RESULT_VARIABLE _GSS_CONFIGURE_FAILED
+        )
+message(STATUS "CFLAGS: ${_GSS_CFLAGS}")
+        if(NOT _GSS_CONFIGURE_FAILED) # 0 means success
+            # should also work in an odd case when multiple directories are given
+            string(STRIP "${_GSS_CFLAGS}" _GSS_CFLAGS)
+            string(REGEX REPLACE " +-I" ";" _GSS_CFLAGS "${_GSS_CFLAGS}")
+            string(REGEX REPLACE " +-([^I][^ \\t;]*)" ";-\\1"_GSS_CFLAGS "${_GSS_CFLAGS}")
+
+            foreach(_flag ${_GSS_CFLAGS})
+                if(_flag MATCHES "^-I.*")
+                    string(REGEX REPLACE "^-I" "" _val "${_flag}")
+                    list(APPEND _GSS_INCLUDE_DIR "${_val}")
+                else()
+                    list(APPEND _GSS_COMPILER_FLAGS "${_flag}")
+                endif()
+            endforeach()
+        endif()
+
+        execute_process(
+            COMMAND ${_GSS_CONFIGURE_SCRIPT} "--libs" "gssapi"
+            OUTPUT_VARIABLE _GSS_LIB_FLAGS
+            RESULT_VARIABLE _GSS_CONFIGURE_FAILED
+        )
+message(STATUS "LDFLAGS: ${_GSS_LIB_FLAGS}")
+        if(NOT _GSS_CONFIGURE_FAILED) # 0 means success
+            # this script gives us libraries and link directories. Blah. We have to deal with it.
+            string(STRIP "${_GSS_LIB_FLAGS}" _GSS_LIB_FLAGS)
+            string(REGEX REPLACE " +-(L|l)" ";-\\1" _GSS_LIB_FLAGS "${_GSS_LIB_FLAGS}")
+            string(REGEX REPLACE " +-([^Ll][^ \\t;]*)" ";-\\1"_GSS_LIB_FLAGS "${_GSS_LIB_FLAGS}")
+
+            foreach(_flag ${_GSS_LIB_FLAGS})
+                if(_flag MATCHES "^-l.*")
+                    string(REGEX REPLACE "^-l" "" _val "${_flag}")
+                    list(APPEND _GSS_LIBRARIES "${_val}")
+                elseif(_flag MATCHES "^-L.*")
+                    string(REGEX REPLACE "^-L" "" _val "${_flag}")
+                    list(APPEND _GSS_LINK_DIRECTORIES "${_val}")
+                else()
+                    list(APPEND _GSS_LINKER_FLAGS "${_flag}")
+                endif()
+            endforeach()
+        endif()
+
+
+        execute_process(
+            COMMAND ${_GSS_CONFIGURE_SCRIPT} "--version"
+            OUTPUT_VARIABLE _GSS_VERSION
+            RESULT_VARIABLE _GSS_CONFIGURE_FAILED
+        )
+
+        # older versions may not have the "--version" parameter. In this case we just don't care.
+        if(_GSS_CONFIGURE_FAILED)
+            set(_GSS_VERSION 0)
+        endif()
+
+
+        execute_process(
+            COMMAND ${_GSS_CONFIGURE_SCRIPT} "--vendor"
+            OUTPUT_VARIABLE _GSS_VENDOR
+            RESULT_VARIABLE _GSS_CONFIGURE_FAILED
+        )
+
+        # older versions may not have the "--vendor" parameter. In this case we just don't care.
+        if(_GSS_CONFIGURE_FAILED)
+            set(GSS_FLAVOUR "Heimdal") # most probably, shouldn't really matter
+        else()
+            if(_GSS_VENDOR MATCHES ".*H|heimdal.*")
+                set(GSS_FLAVOUR "Heimdal")
+            else()
+                set(GSS_FLAVOUR "MIT")
+            endif()
+        endif()
+
+    else() # either there is no config script or we are on platform that doesn't provide one (Windows?)
+
+        find_path(_GSS_INCLUDE_DIR
+            NAMES
+                "gssapi/gssapi.h"
+            HINTS
+                ${_GSS_ROOT_HINTS}
+            PATH_SUFFIXES
+                include
+                inc
+        )
+
+        if(_GSS_INCLUDE_DIR) #jay, we've found something
+            set(CMAKE_REQUIRED_INCLUDES "${_GSS_INCLUDE_DIR}")
+            check_include_files( "gssapi/gssapi_generic.h;gssapi/gssapi_krb5.h" _GSS_HAVE_MIT_HEADERS)
+
+            if(_GSS_HAVE_MIT_HEADERS)
+                set(GSS_FLAVOUR "MIT")
+            else()
+                # prevent compiling the header - just check if we can include it
+                set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D__ROKEN_H__")
+                check_include_file( "roken.h" _GSS_HAVE_ROKEN_H)
+
+                check_include_file( "heimdal/roken.h" _GSS_HAVE_HEIMDAL_ROKEN_H)
+                if(_GSS_HAVE_ROKEN_H OR _GSS_HAVE_HEIMDAL_ROKEN_H)
+                    set(GSS_FLAVOUR "Heimdal")
+                endif()
+                set(CMAKE_REQUIRED_DEFINITIONS "")
+            endif()
+        else()
+            # I'm not convienced if this is the right way but this is what autotools do at the moment
+            find_path(_GSS_INCLUDE_DIR
+                NAMES
+                    "gssapi.h"
+                HINTS
+                    ${_GSS_ROOT_HINTS}
+                PATH_SUFFIXES
+                    include
+                    inc
+            )
+
+            if(_GSS_INCLUDE_DIR)
+                set(GSS_FLAVOUR "Heimdal")
+            endif()
+        endif()
+
+        # if we have headers, check if we can link libraries
+        if(GSS_FLAVOUR)
+            set(_GSS_LIBDIR_SUFFIXES "")
+            set(_GSS_LIBDIR_HINTS ${_GSS_ROOT_HINTS})
+            get_filename_component(_GSS_CALCULATED_POTENTIAL_ROOT "${_GSS_INCLUDE_DIR}" PATH)
+            list(APPEND _GSS_LIBDIR_HINTS ${_GSS_CALCULATED_POTENTIAL_ROOT})
+
+            if(WIN32)
+                if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+                    list(APPEND _GSS_LIBDIR_SUFFIXES "lib/AMD64")
+                    if(GSS_FLAVOUR STREQUAL "MIT")
+                        set(_GSS_LIBNAME "gssapi64")
+                    else()
+                        set(_GSS_LIBNAME "libgssapi")
+                    endif()
+                else()
+                    list(APPEND _GSS_LIBDIR_SUFFIXES "lib/i386")
+                    if(GSS_FLAVOUR STREQUAL "MIT")
+                        set(_GSS_LIBNAME "gssapi32")
+                    else()
+                        set(_GSS_LIBNAME "libgssapi")
+                    endif()
+                endif()
+            else()
+                list(APPEND _GSS_LIBDIR_SUFFIXES "lib;lib64") # those suffixes are not checked for HINTS
+                if(GSS_FLAVOUR STREQUAL "MIT")
+                    set(_GSS_LIBNAME "gssapi_krb5")
+                else()
+                    set(_GSS_LIBNAME "gssapi")
+                endif()
+            endif()
+
+            find_library(_GSS_LIBRARIES
+                NAMES
+                    ${_GSS_LIBNAME}
+                HINTS
+                    ${_GSS_LIBDIR_HINTS}
+                PATH_SUFFIXES
+                    ${_GSS_LIBDIR_SUFFIXES}
+            )
+
+        endif()
+
+    endif()
+else()
+    if(_GSS_PKG_${_MIT_MODNAME}_VERSION)
+        set(GSS_FLAVOUR "MIT")
+        set(_GSS_VERSION _GSS_PKG_${_MIT_MODNAME}_VERSION)
+    else()
+        set(GSS_FLAVOUR "Heimdal")
+        set(_GSS_VERSION _GSS_PKG_${_MIT_HEIMDAL}_VERSION)
+    endif()
+endif()
+
+set(GSS_INCLUDE_DIR ${_GSS_INCLUDE_DIR})
+set(GSS_LIBRARIES ${_GSS_LIBRARIES})
+set(GSS_LINK_DIRECTORIES ${_GSS_LINK_DIRECTORIES})
+set(GSS_LINKER_FLAGS ${_GSS_LINKER_FLAGS})
+set(GSS_COMPILER_FLAGS ${_GSS_COMPILER_FLAGS})
+set(GSS_VERSION ${_GSS_VERSION})
+
+if(GSS_FLAVOUR)
+
+    if(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "Heimdal")
+        if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+            set(HEIMDAL_MANIFEST_FILE "Heimdal.Application.amd64.manifest")
+        else()
+            set(HEIMDAL_MANIFEST_FILE "Heimdal.Application.x86.manifest")
+        endif()
+
+        if(EXISTS "${GSS_INCLUDE_DIR}/${HEIMDAL_MANIFEST_FILE}")
+            file(STRINGS "${GSS_INCLUDE_DIR}/${HEIMDAL_MANIFEST_FILE}" heimdal_version_str
+                 REGEX "^.*version=\"[0-9]\\.[^\"]+\".*$")
+
+            string(REGEX MATCH "[0-9]\\.[^\"]+"
+                   GSS_VERSION "${heimdal_version_str}")
+        endif()
+
+        if(NOT GSS_VERSION)
+            set(GSS_VERSION "Heimdal Unknown")
+        endif()
+    elseif(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "MIT")
+        get_filename_component(_MIT_VERSION "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos\\SDK\\CurrentVersion;VersionString]" NAME CACHE)
+        if(WIN32 AND _MIT_VERSION)
+            set(GSS_VERSION "${_MIT_VERSION}")
+        else()
+            set(GSS_VERSION "MIT Unknown")
+        endif()
+    endif()
+endif()
+
+
+include(FindPackageHandleStandardArgs)
+
+set(_GSS_REQUIRED_VARS GSS_LIBRARIES GSS_FLAVOUR)
+
+find_package_handle_standard_args(GSS
+    REQUIRED_VARS
+        ${_GSS_REQUIRED_VARS}
+    VERSION_VAR
+        GSS_VERSION
+    FAIL_MESSAGE
+        "Could NOT find GSS, try to set the path to GSS root folder in the system variable GSS_ROOT_DIR"
+)
+
+mark_as_advanced(GSS_INCLUDE_DIR GSS_LIBRARIES)
diff --git a/CMake/FindLibSSH2.cmake b/CMake/FindLibSSH2.cmake
new file mode 100644
index 0000000..12a7c61
--- /dev/null
+++ b/CMake/FindLibSSH2.cmake
@@ -0,0 +1,35 @@
+# - Try to find the libssh2 library
+# Once done this will define
+#
+# LIBSSH2_FOUND - system has the libssh2 library
+# LIBSSH2_INCLUDE_DIR - the libssh2 include directory
+# LIBSSH2_LIBRARY - the libssh2 library name
+
+if (LIBSSH2_INCLUDE_DIR AND LIBSSH2_LIBRARY)
+  set(LibSSH2_FIND_QUIETLY TRUE)
+endif (LIBSSH2_INCLUDE_DIR AND LIBSSH2_LIBRARY)
+
+FIND_PATH(LIBSSH2_INCLUDE_DIR libssh2.h
+)
+
+FIND_LIBRARY(LIBSSH2_LIBRARY NAMES ssh2
+)
+
+if(LIBSSH2_INCLUDE_DIR)
+  file(STRINGS "${LIBSSH2_INCLUDE_DIR}/libssh2.h" libssh2_version_str REGEX "^#define[\t ]+LIBSSH2_VERSION_NUM[\t ]+0x[0-9][0-9][0-9][0-9][0-9][0-9].*")
+
+  string(REGEX REPLACE "^.*LIBSSH2_VERSION_NUM[\t ]+0x([0-9][0-9]).*$" "\\1" LIBSSH2_VERSION_MAJOR "${libssh2_version_str}")
+  string(REGEX REPLACE "^.*LIBSSH2_VERSION_NUM[\t ]+0x[0-9][0-9]([0-9][0-9]).*$" "\\1" LIBSSH2_VERSION_MINOR  "${libssh2_version_str}")
+  string(REGEX REPLACE "^.*LIBSSH2_VERSION_NUM[\t ]+0x[0-9][0-9][0-9][0-9]([0-9][0-9]).*$" "\\1" LIBSSH2_VERSION_PATCH "${libssh2_version_str}")
+
+  string(REGEX REPLACE "^0(.+)" "\\1" LIBSSH2_VERSION_MAJOR "${LIBSSH2_VERSION_MAJOR}")
+  string(REGEX REPLACE "^0(.+)" "\\1" LIBSSH2_VERSION_MINOR "${LIBSSH2_VERSION_MINOR}")
+  string(REGEX REPLACE "^0(.+)" "\\1" LIBSSH2_VERSION_PATCH "${LIBSSH2_VERSION_PATCH}")
+
+  set(LIBSSH2_VERSION "${LIBSSH2_VERSION_MAJOR}.${LIBSSH2_VERSION_MINOR}.${LIBSSH2_VERSION_PATCH}")
+endif(LIBSSH2_INCLUDE_DIR)
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibSSH2 DEFAULT_MSG LIBSSH2_INCLUDE_DIR LIBSSH2_LIBRARY )
+
+MARK_AS_ADVANCED(LIBSSH2_INCLUDE_DIR LIBSSH2_LIBRARY LIBSSH2_VERSION_MAJOR LIBSSH2_VERSION_MINOR LIBSSH2_VERSION_PATCH LIBSSH2_VERSION)
diff --git a/CMake/FindNGHTTP2.cmake b/CMake/FindNGHTTP2.cmake
new file mode 100644
index 0000000..4e566cf
--- /dev/null
+++ b/CMake/FindNGHTTP2.cmake
@@ -0,0 +1,18 @@
+include(FindPackageHandleStandardArgs)
+
+find_path(NGHTTP2_INCLUDE_DIR "nghttp2/nghttp2.h")
+
+find_library(NGHTTP2_LIBRARY NAMES nghttp2)
+
+find_package_handle_standard_args(NGHTTP2
+    FOUND_VAR
+      NGHTTP2_FOUND
+    REQUIRED_VARS
+      NGHTTP2_LIBRARY
+      NGHTTP2_INCLUDE_DIR
+    FAIL_MESSAGE
+      "Could NOT find NGHTTP2"
+)
+
+set(NGHTTP2_INCLUDE_DIRS ${NGHTTP2_INCLUDE_DIR} )
+set(NGHTTP2_LIBRARIES ${NGHTTP2_LIBRARY})
diff --git a/CMake/FindOpenSSL.cmake b/CMake/FindOpenSSL.cmake
deleted file mode 100644
index 63a9d60..0000000
--- a/CMake/FindOpenSSL.cmake
+++ /dev/null
@@ -1,19 +0,0 @@
-# Extension of the standard FindOpenSSL.cmake
-# Adds OPENSSL_INCLUDE_DIRS and libeay32
-include("${CMAKE_ROOT}/Modules/FindOpenSSL.cmake")
-
-# Bill Hoffman told that libeay32 is necessary for him:
-find_library(SSL_LIBEAY NAMES libeay32)
-
-if(OPENSSL_FOUND)
-  if(SSL_LIBEAY)
-    list(APPEND OPENSSL_LIBRARIES ${SSL_LIBEAY})
-  else()
-    set(OPENSSL_FOUND FALSE)
-  endif()
-endif()
-
-
-if(OPENSSL_FOUND)
-  set(OPENSSL_INCLUDE_DIRS ${OPENSSL_INCLUDE_DIR})
-endif()
diff --git a/CMake/FindZLIB.cmake b/CMake/FindZLIB.cmake
deleted file mode 100644
index 87f1d4f..0000000
--- a/CMake/FindZLIB.cmake
+++ /dev/null
@@ -1,8 +0,0 @@
-# Locate zlib
-include("${CMAKE_ROOT}/Modules/FindZLIB.cmake")
-
-find_library(ZLIB_LIBRARY_DEBUG NAMES zd zlibd zdlld zlib1d )
-
-if(ZLIB_FOUND AND ZLIB_LIBRARY_DEBUG)
-  set( ZLIB_LIBRARIES optimized "${ZLIB_LIBRARY}" debug ${ZLIB_LIBRARY_DEBUG})
-endif()
diff --git a/CMake/Macros.cmake b/CMake/Macros.cmake
new file mode 100644
index 0000000..dab005f
--- /dev/null
+++ b/CMake/Macros.cmake
@@ -0,0 +1,95 @@
+#File defines convenience macros for available feature testing
+
+# This macro checks if the symbol exists in the library and if it
+# does, it prepends library to the list.  It is intended to be called
+# multiple times with a sequence of possibly dependent libraries in
+# order of least-to-most-dependent.  Some libraries depend on others
+# to link correctly.
+macro(CHECK_LIBRARY_EXISTS_CONCAT LIBRARY SYMBOL VARIABLE)
+  check_library_exists("${LIBRARY};${CURL_LIBS}" ${SYMBOL} "${CMAKE_LIBRARY_PATH}"
+    ${VARIABLE})
+  if(${VARIABLE})
+    set(CURL_LIBS ${LIBRARY} ${CURL_LIBS})
+  endif(${VARIABLE})
+endmacro(CHECK_LIBRARY_EXISTS_CONCAT)
+
+# Check if header file exists and add it to the list.
+# This macro is intended to be called multiple times with a sequence of
+# possibly dependent header files.  Some headers depend on others to be
+# compiled correctly.
+macro(CHECK_INCLUDE_FILE_CONCAT FILE VARIABLE)
+  check_include_files("${CURL_INCLUDES};${FILE}" ${VARIABLE})
+  if(${VARIABLE})
+    set(CURL_INCLUDES ${CURL_INCLUDES} ${FILE})
+    set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -D${VARIABLE}")
+  endif(${VARIABLE})
+endmacro(CHECK_INCLUDE_FILE_CONCAT)
+
+# For other curl specific tests, use this macro.
+macro(CURL_INTERNAL_TEST CURL_TEST)
+  if(NOT DEFINED "${CURL_TEST}")
+    set(MACRO_CHECK_FUNCTION_DEFINITIONS
+      "-D${CURL_TEST} ${CURL_TEST_DEFINES} ${CMAKE_REQUIRED_FLAGS}")
+    if(CMAKE_REQUIRED_LIBRARIES)
+      set(CURL_TEST_ADD_LIBRARIES
+        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
+    endif(CMAKE_REQUIRED_LIBRARIES)
+
+    message(STATUS "Performing Curl Test ${CURL_TEST}")
+    try_compile(${CURL_TEST}
+      ${CMAKE_BINARY_DIR}
+      ${CMAKE_CURRENT_SOURCE_DIR}/CMake/CurlTests.c
+      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
+      "${CURL_TEST_ADD_LIBRARIES}"
+      OUTPUT_VARIABLE OUTPUT)
+    if(${CURL_TEST})
+      set(${CURL_TEST} 1 CACHE INTERNAL "Curl test ${FUNCTION}")
+      message(STATUS "Performing Curl Test ${CURL_TEST} - Success")
+      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+        "Performing Curl Test ${CURL_TEST} passed with the following output:\n"
+        "${OUTPUT}\n")
+    else(${CURL_TEST})
+      message(STATUS "Performing Curl Test ${CURL_TEST} - Failed")
+      set(${CURL_TEST} "" CACHE INTERNAL "Curl test ${FUNCTION}")
+      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+        "Performing Curl Test ${CURL_TEST} failed with the following output:\n"
+        "${OUTPUT}\n")
+    endif(${CURL_TEST})
+  endif()
+endmacro(CURL_INTERNAL_TEST)
+
+macro(CURL_INTERNAL_TEST_RUN CURL_TEST)
+  if(NOT DEFINED "${CURL_TEST}_COMPILE")
+    set(MACRO_CHECK_FUNCTION_DEFINITIONS
+      "-D${CURL_TEST} ${CMAKE_REQUIRED_FLAGS}")
+    if(CMAKE_REQUIRED_LIBRARIES)
+      set(CURL_TEST_ADD_LIBRARIES
+        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
+    endif(CMAKE_REQUIRED_LIBRARIES)
+
+    message(STATUS "Performing Curl Test ${CURL_TEST}")
+    try_run(${CURL_TEST} ${CURL_TEST}_COMPILE
+      ${CMAKE_BINARY_DIR}
+      ${CMAKE_CURRENT_SOURCE_DIR}/CMake/CurlTests.c
+      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
+      "${CURL_TEST_ADD_LIBRARIES}"
+      OUTPUT_VARIABLE OUTPUT)
+    if(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
+      set(${CURL_TEST} 1 CACHE INTERNAL "Curl test ${FUNCTION}")
+      message(STATUS "Performing Curl Test ${CURL_TEST} - Success")
+    else(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
+      message(STATUS "Performing Curl Test ${CURL_TEST} - Failed")
+      set(${CURL_TEST} "" CACHE INTERNAL "Curl test ${FUNCTION}")
+      file(APPEND "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log"
+        "Performing Curl Test ${CURL_TEST} failed with the following output:\n"
+        "${OUTPUT}")
+      if(${CURL_TEST}_COMPILE)
+        file(APPEND
+          "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log"
+          "There was a problem running this test\n")
+      endif(${CURL_TEST}_COMPILE)
+      file(APPEND "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log"
+        "\n\n")
+    endif(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
+  endif()
+endmacro(CURL_INTERNAL_TEST_RUN)
diff --git a/CMake/OtherTests.cmake b/CMake/OtherTests.cmake
index 89d0048..d599498 100644
--- a/CMake/OtherTests.cmake
+++ b/CMake/OtherTests.cmake
@@ -1,39 +1,35 @@
-include(CurlCheckCSourceCompiles)
-set(EXTRA_DEFINES "__unused1\n#undef inline\n#define __unused2")
-set(HEADER_INCLUDES)
-set(headers_hack)
+include(CheckCSourceCompiles)
+# The begin of the sources (macros and includes)
+set(_source_epilogue "#undef inline")
 
 macro(add_header_include check header)
   if(${check})
-    set(headers_hack
-      "${headers_hack}\n#include <${header}>")
-    #SET(HEADER_INCLUDES
-    #  ${HEADER_INCLUDES}
-    #  "${header}")
+    set(_source_epilogue "${_source_epilogue}\n#include <${header}>")
   endif(${check})
 endmacro(add_header_include)
 
 set(signature_call_conv)
 if(HAVE_WINDOWS_H)
-  add_header_include(HAVE_WINDOWS_H "windows.h")
   add_header_include(HAVE_WINSOCK2_H "winsock2.h")
+  add_header_include(HAVE_WINDOWS_H "windows.h")
   add_header_include(HAVE_WINSOCK_H "winsock.h")
-  set(EXTRA_DEFINES ${EXTRA_DEFINES}
-    "__unused7\n#ifndef WIN32_LEAN_AND_MEAN\n#define WIN32_LEAN_AND_MEAN\n#endif\n#define __unused3")
+  set(_source_epilogue
+      "${_source_epilogue}\n#ifndef WIN32_LEAN_AND_MEAN\n#define WIN32_LEAN_AND_MEAN\n#endif")
   set(signature_call_conv "PASCAL")
+  if(HAVE_LIBWS2_32)
+    set(CMAKE_REQUIRED_LIBRARIES ws2_32)
+  endif()
 else(HAVE_WINDOWS_H)
   add_header_include(HAVE_SYS_TYPES_H "sys/types.h")
   add_header_include(HAVE_SYS_SOCKET_H "sys/socket.h")
 endif(HAVE_WINDOWS_H)
 
-set(EXTRA_DEFINES_BACKUP "${EXTRA_DEFINES}")
-set(EXTRA_DEFINES "${EXTRA_DEFINES_BACKUP}\n${headers_hack}\n${extern_line}\n#define __unused5")
-curl_check_c_source_compiles("recv(0, 0, 0, 0)" curl_cv_recv)
+check_c_source_compiles("${_source_epilogue}
+int main(void) {
+    recv(0, 0, 0, 0);
+    return 0;
+}" curl_cv_recv)
 if(curl_cv_recv)
-  #    AC_CACHE_CHECK([types of arguments and return type for recv],
-  #[curl_cv_func_recv_args], [
-  #SET(curl_cv_func_recv_args "unknown")
-  #for recv_retv in 'int' 'ssize_t'; do
   if(NOT DEFINED curl_cv_func_recv_args OR "${curl_cv_func_recv_args}" STREQUAL "unknown")
     foreach(recv_retv "int" "ssize_t" )
       foreach(recv_arg1 "int" "ssize_t" "SOCKET")
@@ -41,17 +37,23 @@
           foreach(recv_arg3 "size_t" "int" "socklen_t" "unsigned int")
             foreach(recv_arg4 "int" "unsigned int")
               if(NOT curl_cv_func_recv_done)
-                set(curl_cv_func_recv_test "UNKNOWN")
-                set(extern_line "extern ${recv_retv} ${signature_call_conv} recv(${recv_arg1}, ${recv_arg2}, ${recv_arg3}, ${recv_arg4})\;")
-                set(EXTRA_DEFINES "${EXTRA_DEFINES_BACKUP}\n${headers_hack}\n${extern_line}\n#define __unused5")
-                curl_check_c_source_compiles("
+                unset(curl_cv_func_recv_test CACHE)
+                check_c_source_compiles("
+                  ${_source_epilogue}
+                  extern ${recv_retv} ${signature_call_conv}
+                  recv(${recv_arg1}, ${recv_arg2}, ${recv_arg3}, ${recv_arg4});
+                  int main(void) {
                     ${recv_arg1} s=0;
                     ${recv_arg2} buf=0;
                     ${recv_arg3} len=0;
                     ${recv_arg4} flags=0;
-                    ${recv_retv} res = recv(s, buf, len, flags)"
-                  curl_cv_func_recv_test
-                  "${recv_retv} recv(${recv_arg1}, ${recv_arg2}, ${recv_arg3}, ${recv_arg4})")
+                    ${recv_retv} res = recv(s, buf, len, flags);
+                    (void) res;
+                    return 0;
+                  }"
+                  curl_cv_func_recv_test)
+                message(STATUS
+                  "Tested: ${recv_retv} recv(${recv_arg1}, ${recv_arg2}, ${recv_arg3}, ${recv_arg4})")
                 if(curl_cv_func_recv_test)
                   set(curl_cv_func_recv_args
                     "${recv_arg1},${recv_arg2},${recv_arg3},${recv_arg4},${recv_retv}")
@@ -69,18 +71,13 @@
         endforeach(recv_arg2)
       endforeach(recv_arg1)
     endforeach(recv_retv)
-  else(NOT DEFINED curl_cv_func_recv_args OR "${curl_cv_func_recv_args}" STREQUAL "unknown")
+  else()
     string(REGEX REPLACE "^([^,]*),[^,]*,[^,]*,[^,]*,[^,]*$" "\\1" RECV_TYPE_ARG1 "${curl_cv_func_recv_args}")
     string(REGEX REPLACE "^[^,]*,([^,]*),[^,]*,[^,]*,[^,]*$" "\\1" RECV_TYPE_ARG2 "${curl_cv_func_recv_args}")
     string(REGEX REPLACE "^[^,]*,[^,]*,([^,]*),[^,]*,[^,]*$" "\\1" RECV_TYPE_ARG3 "${curl_cv_func_recv_args}")
     string(REGEX REPLACE "^[^,]*,[^,]*,[^,]*,([^,]*),[^,]*$" "\\1" RECV_TYPE_ARG4 "${curl_cv_func_recv_args}")
     string(REGEX REPLACE "^[^,]*,[^,]*,[^,]*,[^,]*,([^,]*)$" "\\1" RECV_TYPE_RETV "${curl_cv_func_recv_args}")
-    #MESSAGE("RECV_TYPE_ARG1 ${RECV_TYPE_ARG1}")
-    #MESSAGE("RECV_TYPE_ARG2 ${RECV_TYPE_ARG2}")
-    #MESSAGE("RECV_TYPE_ARG3 ${RECV_TYPE_ARG3}")
-    #MESSAGE("RECV_TYPE_ARG4 ${RECV_TYPE_ARG4}")
-    #MESSAGE("RECV_TYPE_RETV ${RECV_TYPE_RETV}")
-  endif(NOT DEFINED curl_cv_func_recv_args OR "${curl_cv_func_recv_args}" STREQUAL "unknown")
+  endif()
 
   if("${curl_cv_func_recv_args}" STREQUAL "unknown")
     message(FATAL_ERROR "Cannot find proper types to use for recv args")
@@ -91,12 +88,12 @@
 set(curl_cv_func_recv_args "${curl_cv_func_recv_args}" CACHE INTERNAL "Arguments for recv")
 set(HAVE_RECV 1)
 
-curl_check_c_source_compiles("send(0, 0, 0, 0)" curl_cv_send)
+check_c_source_compiles("${_source_epilogue}
+int main(void) {
+    send(0, 0, 0, 0);
+    return 0;
+}" curl_cv_send)
 if(curl_cv_send)
-  #    AC_CACHE_CHECK([types of arguments and return type for send],
-  #[curl_cv_func_send_args], [
-  #SET(curl_cv_func_send_args "unknown")
-  #for send_retv in 'int' 'ssize_t'; do
   if(NOT DEFINED curl_cv_func_send_args OR "${curl_cv_func_send_args}" STREQUAL "unknown")
     foreach(send_retv "int" "ssize_t" )
       foreach(send_arg1 "int" "ssize_t" "SOCKET")
@@ -104,19 +101,24 @@
           foreach(send_arg3 "size_t" "int" "socklen_t" "unsigned int")
             foreach(send_arg4 "int" "unsigned int")
               if(NOT curl_cv_func_send_done)
-                set(curl_cv_func_send_test "UNKNOWN")
-                set(extern_line "extern ${send_retv} ${signature_call_conv} send(${send_arg1}, ${send_arg2}, ${send_arg3}, ${send_arg4})\;")
-                set(EXTRA_DEFINES "${EXTRA_DEFINES_BACKUP}\n${headers_hack}\n${extern_line}\n#define __unused5")
-                curl_check_c_source_compiles("
+                unset(curl_cv_func_send_test CACHE)
+                check_c_source_compiles("
+                  ${_source_epilogue}
+                  extern ${send_retv} ${signature_call_conv}
+                  send(${send_arg1}, ${send_arg2}, ${send_arg3}, ${send_arg4});
+                  int main(void) {
                     ${send_arg1} s=0;
                     ${send_arg2} buf=0;
                     ${send_arg3} len=0;
                     ${send_arg4} flags=0;
-                    ${send_retv} res = send(s, buf, len, flags)"
-                  curl_cv_func_send_test
-                  "${send_retv} send(${send_arg1}, ${send_arg2}, ${send_arg3}, ${send_arg4})")
+                    ${send_retv} res = send(s, buf, len, flags);
+                    (void) res;
+                    return 0;
+                  }"
+                  curl_cv_func_send_test)
+                message(STATUS
+                  "Tested: ${send_retv} send(${send_arg1}, ${send_arg2}, ${send_arg3}, ${send_arg4})")
                 if(curl_cv_func_send_test)
-                  #MESSAGE("Found arguments: ${curl_cv_func_send_test}")
                   string(REGEX REPLACE "(const) .*" "\\1" send_qual_arg2 "${send_arg2}")
                   string(REGEX REPLACE "const (.*)" "\\1" send_arg2 "${send_arg2}")
                   set(curl_cv_func_send_args
@@ -135,20 +137,14 @@
         endforeach(send_arg2)
       endforeach(send_arg1)
     endforeach(send_retv)
-  else(NOT DEFINED curl_cv_func_send_args OR "${curl_cv_func_send_args}" STREQUAL "unknown")
+  else()
     string(REGEX REPLACE "^([^,]*),[^,]*,[^,]*,[^,]*,[^,]*,[^,]*$" "\\1" SEND_TYPE_ARG1 "${curl_cv_func_send_args}")
     string(REGEX REPLACE "^[^,]*,([^,]*),[^,]*,[^,]*,[^,]*,[^,]*$" "\\1" SEND_TYPE_ARG2 "${curl_cv_func_send_args}")
     string(REGEX REPLACE "^[^,]*,[^,]*,([^,]*),[^,]*,[^,]*,[^,]*$" "\\1" SEND_TYPE_ARG3 "${curl_cv_func_send_args}")
     string(REGEX REPLACE "^[^,]*,[^,]*,[^,]*,([^,]*),[^,]*,[^,]*$" "\\1" SEND_TYPE_ARG4 "${curl_cv_func_send_args}")
     string(REGEX REPLACE "^[^,]*,[^,]*,[^,]*,[^,]*,([^,]*),[^,]*$" "\\1" SEND_TYPE_RETV "${curl_cv_func_send_args}")
     string(REGEX REPLACE "^[^,]*,[^,]*,[^,]*,[^,]*,[^,]*,([^,]*)$" "\\1" SEND_QUAL_ARG2 "${curl_cv_func_send_args}")
-    #MESSAGE("SEND_TYPE_ARG1 ${SEND_TYPE_ARG1}")
-    #MESSAGE("SEND_TYPE_ARG2 ${SEND_TYPE_ARG2}")
-    #MESSAGE("SEND_TYPE_ARG3 ${SEND_TYPE_ARG3}")
-    #MESSAGE("SEND_TYPE_ARG4 ${SEND_TYPE_ARG4}")
-    #MESSAGE("SEND_TYPE_RETV ${SEND_TYPE_RETV}")
-    #MESSAGE("SEND_QUAL_ARG2 ${SEND_QUAL_ARG2}")
-  endif(NOT DEFINED curl_cv_func_send_args OR "${curl_cv_func_send_args}" STREQUAL "unknown")
+  endif()
 
   if("${curl_cv_func_send_args}" STREQUAL "unknown")
     message(FATAL_ERROR "Cannot find proper types to use for send args")
@@ -160,88 +156,71 @@
 set(curl_cv_func_send_args "${curl_cv_func_send_args}" CACHE INTERNAL "Arguments for send")
 set(HAVE_SEND 1)
 
-set(EXTRA_DEFINES "${EXTRA_DEFINES}\n${headers_hack}\n#define __unused5")
-curl_check_c_source_compiles("int flag = MSG_NOSIGNAL" HAVE_MSG_NOSIGNAL)
+check_c_source_compiles("${_source_epilogue}
+  int main(void) {
+    int flag = MSG_NOSIGNAL;
+    (void)flag;
+    return 0;
+  }" HAVE_MSG_NOSIGNAL)
 
-set(EXTRA_DEFINES "__unused1\n#undef inline\n#define __unused2")
-set(HEADER_INCLUDES)
-set(headers_hack)
-
-macro(add_header_include check header)
-  if(${check})
-    set(headers_hack
-      "${headers_hack}\n#include <${header}>")
-    #SET(HEADER_INCLUDES
-    #  ${HEADER_INCLUDES}
-    #  "${header}")
-  endif(${check})
-endmacro(add_header_include header)
-
-if(HAVE_WINDOWS_H)
-  set(EXTRA_DEFINES ${EXTRA_DEFINES}
-    "__unused7\n#ifndef WIN32_LEAN_AND_MEAN\n#define WIN32_LEAN_AND_MEAN\n#endif\n#define __unused3")
-  add_header_include(HAVE_WINDOWS_H "windows.h")
-  add_header_include(HAVE_WINSOCK2_H "winsock2.h")
-  add_header_include(HAVE_WINSOCK_H "winsock.h")
-else(HAVE_WINDOWS_H)
-  add_header_include(HAVE_SYS_TYPES_H "sys/types.h")
+if(NOT HAVE_WINDOWS_H)
   add_header_include(HAVE_SYS_TIME_H "sys/time.h")
   add_header_include(TIME_WITH_SYS_TIME "time.h")
   add_header_include(HAVE_TIME_H "time.h")
-endif(HAVE_WINDOWS_H)
-set(EXTRA_DEFINES "${EXTRA_DEFINES}\n${headers_hack}\n#define __unused5")
-curl_check_c_source_compiles("struct timeval ts;\nts.tv_sec  = 0;\nts.tv_usec = 0" HAVE_STRUCT_TIMEVAL)
+endif()
+check_c_source_compiles("${_source_epilogue}
+int main(void) {
+  struct timeval ts;
+  ts.tv_sec  = 0;
+  ts.tv_usec = 0;
+  (void)ts;
+  return 0;
+}" HAVE_STRUCT_TIMEVAL)
 
 
-include(CurlCheckCSourceRuns)
-set(EXTRA_DEFINES)
-set(HEADER_INCLUDES)
+include(CheckCSourceRuns)
+set(CMAKE_REQUIRED_FLAGS)
 if(HAVE_SYS_POLL_H)
-  set(HEADER_INCLUDES "sys/poll.h")
+  set(CMAKE_REQUIRED_FLAGS "-DHAVE_SYS_POLL_H")
 endif(HAVE_SYS_POLL_H)
-curl_check_c_source_runs("return poll((void *)0, 0, 10 /*ms*/)" HAVE_POLL_FINE)
+check_c_source_runs("
+  #ifdef HAVE_SYS_POLL_H
+  #  include <sys/poll.h>
+  #endif
+  int main(void) {
+    return poll((void *)0, 0, 10 /*ms*/);
+  }" HAVE_POLL_FINE)
 
 set(HAVE_SIG_ATOMIC_T 1)
-set(EXTRA_DEFINES)
-set(HEADER_INCLUDES)
+set(CMAKE_REQUIRED_FLAGS)
 if(HAVE_SIGNAL_H)
-  set(HEADER_INCLUDES "signal.h")
+  set(CMAKE_REQUIRED_FLAGS "-DHAVE_SIGNAL_H")
   set(CMAKE_EXTRA_INCLUDE_FILES "signal.h")
 endif(HAVE_SIGNAL_H)
 check_type_size("sig_atomic_t" SIZEOF_SIG_ATOMIC_T)
 if(HAVE_SIZEOF_SIG_ATOMIC_T)
-  curl_check_c_source_compiles("static volatile sig_atomic_t dummy = 0" HAVE_SIG_ATOMIC_T_NOT_VOLATILE)
+  check_c_source_compiles("
+    #ifdef HAVE_SIGNAL_H
+    #  include <signal.h>
+    #endif
+    int main(void) {
+      static volatile sig_atomic_t dummy = 0;
+      (void)dummy;
+      return 0;
+    }" HAVE_SIG_ATOMIC_T_NOT_VOLATILE)
   if(NOT HAVE_SIG_ATOMIC_T_NOT_VOLATILE)
     set(HAVE_SIG_ATOMIC_T_VOLATILE 1)
   endif(NOT HAVE_SIG_ATOMIC_T_NOT_VOLATILE)
 endif(HAVE_SIZEOF_SIG_ATOMIC_T)
 
-set(CHECK_TYPE_SIZE_PREINCLUDE
-  "#undef inline")
-
 if(HAVE_WINDOWS_H)
-  set(CHECK_TYPE_SIZE_PREINCLUDE "${CHECK_TYPE_SIZE_PREINCLUDE}
-  #ifndef WIN32_LEAN_AND_MEAN
-  #define WIN32_LEAN_AND_MEAN
-  #endif
-  #include <windows.h>")
-  if(HAVE_WINSOCK2_H)
-    set(CHECK_TYPE_SIZE_PREINCLUDE "${CHECK_TYPE_SIZE_PREINCLUDE}\n#include <winsock2.h>")
-  endif(HAVE_WINSOCK2_H)
-else(HAVE_WINDOWS_H)
+  set(CMAKE_EXTRA_INCLUDE_FILES winsock2.h)
+else()
+  set(CMAKE_EXTRA_INCLUDE_FILES)
   if(HAVE_SYS_SOCKET_H)
-    set(CMAKE_EXTRA_INCLUDE_FILES ${CMAKE_EXTRA_INCLUDE_FILES}
-      "sys/socket.h")
+    set(CMAKE_EXTRA_INCLUDE_FILES sys/socket.h)
   endif(HAVE_SYS_SOCKET_H)
-  if(HAVE_NETINET_IN_H)
-    set(CMAKE_EXTRA_INCLUDE_FILES ${CMAKE_EXTRA_INCLUDE_FILES}
-      "netinet/in.h")
-  endif(HAVE_NETINET_IN_H)
-  if(HAVE_ARPA_INET_H)
-    set(CMAKE_EXTRA_INCLUDE_FILES ${CMAKE_EXTRA_INCLUDE_FILES}
-      "arpa/inet.h")
-  endif(HAVE_ARPA_INET_H)
-endif(HAVE_WINDOWS_H)
+endif()
 
 check_type_size("struct sockaddr_storage" SIZEOF_STRUCT_SOCKADDR_STORAGE)
 if(HAVE_SIZEOF_STRUCT_SOCKADDR_STORAGE)
diff --git a/CMake/Platforms/WindowsCache.cmake b/CMake/Platforms/WindowsCache.cmake
index 49161f8..6fc2991 100644
--- a/CMake/Platforms/WindowsCache.cmake
+++ b/CMake/Platforms/WindowsCache.cmake
@@ -5,6 +5,7 @@
     set(HAVE_LIBSOCKET 0)
     set(NOT_NEED_LIBNSL 0)
     set(HAVE_LIBNSL 0)
+    set(HAVE_GETHOSTNAME 1)
     set(HAVE_LIBZ 0)
     set(HAVE_LIBCRYPTO 0)
 
@@ -14,7 +15,6 @@
     set(HAVE_ARPA_INET_H 0)
     set(HAVE_DLFCN_H 0)
     set(HAVE_FCNTL_H 1)
-    set(HAVE_FEATURES_H 0)
     set(HAVE_INTTYPES_H 0)
     set(HAVE_IO_H 1)
     set(HAVE_MALLOC_H 1)
@@ -108,7 +108,11 @@
     set(HAVE_IN_ADDR_T 0)
     set(HAVE_INET_NTOA_R_DECL 0)
     set(HAVE_INET_NTOA_R_DECL_REENTRANT 0)
-    set(HAVE_GETADDRINFO 0)
+    if(ENABLE_IPV6)
+      set(HAVE_GETADDRINFO 1)
+    else()
+      set(HAVE_GETADDRINFO 0)
+    endif()
     set(STDC_HEADERS 1)
     set(RETSIGTYPE_TEST 1)