Merge branch 'curl-upstream' into update-curl

Resolve conflicts by taking upstream side when possible and otherwise
integrating the changes from both sides.  Be carful in CMakeLists.txt
where the OPENSSL code block that we modified previously has moved, and
preserve our previous modifications in the new location.

1 files changed, 364 insertions, 129 deletions

diff --git a/Utilities/cmcurl/CMakeLists.txt b/Utilities/cmcurl/CMakeLists.txt
index 32e45615b4..6b01be9868 100644
--- a/Utilities/cmcurl/CMakeLists.txt
+++ b/Utilities/cmcurl/CMakeLists.txt
@@ -51,7 +51,7 @@ endif()
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) 1998 - 2015, 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
@@ -96,27 +96,17 @@ message(WARNING "the curl cmake build system is poorly maintained. Be aware")
 endif()
 
 file (READ ${CURL_SOURCE_DIR}/include/curl/curlver.h CURL_VERSION_H_CONTENTS)
-string (REGEX MATCH "LIBCURL_VERSION_MAJOR[ \t]+([0-9]+)"
-  LIBCURL_VERSION_MJ ${CURL_VERSION_H_CONTENTS})
-string (REGEX MATCH "([0-9]+)"
-  LIBCURL_VERSION_MJ ${LIBCURL_VERSION_MJ})
-string (REGEX MATCH
-  "LIBCURL_VERSION_MINOR[ \t]+([0-9]+)"
-  LIBCURL_VERSION_MI ${CURL_VERSION_H_CONTENTS})
-string (REGEX MATCH "([0-9]+)" LIBCURL_VERSION_MI ${LIBCURL_VERSION_MI})
-string (REGEX MATCH
-  "LIBCURL_VERSION_PATCH[ \t]+([0-9]+)"
-  LIBCURL_VERSION_PT ${CURL_VERSION_H_CONTENTS})
-string (REGEX MATCH "([0-9]+)" LIBCURL_VERSION_PT ${LIBCURL_VERSION_PT})
-set (CURL_MAJOR_VERSION ${LIBCURL_VERSION_MJ})
-set (CURL_MINOR_VERSION ${LIBCURL_VERSION_MI})
-set (CURL_PATCH_VERSION ${LIBCURL_VERSION_PT})
+string (REGEX MATCH "#define LIBCURL_VERSION \"[^\"]*"
+  CURL_VERSION ${CURL_VERSION_H_CONTENTS})
+string (REGEX REPLACE "[^\"]+\"" "" CURL_VERSION ${CURL_VERSION})
+string (REGEX MATCH "#define LIBCURL_VERSION_NUM 0x[0-9a-fA-F]+"
+  CURL_VERSION_NUM ${CURL_VERSION_H_CONTENTS})
+string (REGEX REPLACE "[^0]+0x" "" CURL_VERSION_NUM ${CURL_VERSION_NUM})
 
 include_regular_expression("^.*$")    # Sukender: Is it necessary?
 
 # Setup package meta-data
 # SET(PACKAGE "curl")
-set(CURL_VERSION ${CURL_MAJOR_VERSION}.${CURL_MINOR_VERSION}.${CURL_PATCH_VERSION})
 if(0) # This code not needed for building within CMake.
 message(STATUS "curl version=[${CURL_VERSION}]")
 endif()
@@ -134,12 +124,35 @@ include_directories( ${CURL_SOURCE_DIR}/include )
 option(BUILD_CURL_EXE "Set to ON to build cURL executable." ON)
 option(BUILD_CURL_TESTS "Set to ON to build cURL tests." ON)
 option(CURL_STATICLIB "Set to ON to build libcurl with static linking." OFF)
-option(CURL_USE_ARES "Set to ON to enable c-ares support" OFF)
+option(ENABLE_ARES "Set to ON to enable c-ares support" OFF)
+option(ENABLE_THREADED_RESOLVER "Set to ON to enable POSIX threaded DNS lookup" OFF)
+
+option(ENABLE_DEBUG "Set to ON to enable curl debug features" OFF)
+option(ENABLE_CURLDEBUG "Set to ON to build with TrackMemory feature enabled" OFF)
+
+if (ENABLE_DEBUG)
+  # DEBUGBUILD will be defined only for Debug builds
+  if(NOT CMAKE_VERSION VERSION_LESS 3.0)
+    set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS $<$<CONFIG:Debug>:DEBUGBUILD>)
+  else()
+    set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DEBUG DEBUGBUILD)
+  endif()
+  set(ENABLE_CURLDEBUG ON)
+endif()
+
+if (ENABLE_CURLDEBUG)
+  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS CURLDEBUG)
+endif()
+
 # initialize CURL_LIBS
 set(CURL_LIBS "")
 
-if(CURL_USE_ARES)
-  set(USE_ARES ${CURL_USE_ARES})
+if(ENABLE_THREADED_RESOLVER AND ENABLE_ARES)
+  message(FATAL_ERROR "Options ENABLE_THREADED_RESOLVER and ENABLE_ARES are mutually exclusive")
+endif()
+
+if(ENABLE_ARES)
+  set(USE_ARES 1)
   find_package(CARES REQUIRED)
   list(APPEND CURL_LIBS ${CARES_LIBRARY} )
   set(CURL_LIBS ${CURL_LIBS} ${CARES_LIBRARY})
@@ -221,9 +234,52 @@ option(CURL_DISABLE_VERBOSE_STRINGS "to disable verbose strings" OFF)
 mark_as_advanced(CURL_DISABLE_VERBOSE_STRINGS)
 option(DISABLED_THREADSAFE "Set to explicitly specify we don't want to use thread-safe functions" OFF)
 mark_as_advanced(DISABLED_THREADSAFE)
-option(ENABLE_IPV6 "Define if you want to enable IPv6 support" OFF)
+option(ENABLE_IPV6 "Define if you want to enable IPv6 support" ON)
 mark_as_advanced(ENABLE_IPV6)
+if(ENABLE_IPV6)
+  include(CheckStructHasMember)
+  check_struct_has_member("struct sockaddr_in6" sin6_addr "netinet/in.h"
+                          HAVE_SOCKADDR_IN6_SIN6_ADDR)
+  check_struct_has_member("struct sockaddr_in6" sin6_scope_id "netinet/in.h"
+                          HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID)
+  if(NOT HAVE_SOCKADDR_IN6_SIN6_ADDR)
+    message(WARNING "struct sockaddr_in6 not available, disabling IPv6 support")
+    # Force the feature off as this name is used as guard macro...
+    set(ENABLE_IPV6 OFF
+        CACHE BOOL "Define if you want to enable IPv6 support" FORCE)
+  endif()
+endif()
 
+option(ENABLE_MANUAL "to provide the built-in manual" ON)
+unset(USE_MANUAL CACHE) # TODO: cache NROFF/NROFF_MANOPT/USE_MANUAL vars?
+if(ENABLE_MANUAL)
+  find_program(NROFF NAMES gnroff nroff)
+  if(NROFF)
+    # Need a way to write to stdin, this will do
+    file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt" "test")
+    # Tests for a valid nroff option to generate a manpage
+    foreach(_MANOPT "-man" "-mandoc")
+      execute_process(COMMAND "${NROFF}" ${_MANOPT}
+        OUTPUT_VARIABLE NROFF_MANOPT_OUTPUT
+        INPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt"
+        ERROR_QUIET)
+      # Save the option if it was valid
+      if(NROFF_MANOPT_OUTPUT)
+        message("Found *nroff option: -- ${_MANOPT}")
+        set(NROFF_MANOPT ${_MANOPT})
+        set(USE_MANUAL 1)
+        break()
+      endif()
+    endforeach()
+    # No need for the temporary file
+    file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt")
+    if(NOT USE_MANUAL)
+      message(WARNING "Found no *nroff option to get plaintext from man pages")
+    endif()
+  else()
+    message(WARNING "Found no *nroff program")
+  endif()
+endif()
 
 # We need ansi c-flags, especially on HP
 set(CMAKE_C_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_C_FLAGS}")
@@ -250,9 +306,22 @@ include (CheckCSourceCompiles)
 
 # On windows preload settings
 if(WIN32)
+  set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_WINSOCKAPI_")
   include(${CMAKE_CURRENT_SOURCE_DIR}/CMake/Platforms/WindowsCache.cmake)
 endif(WIN32)
 
+if(ENABLE_THREADED_RESOLVER)
+  check_include_file_concat("pthread.h" HAVE_PTHREAD_H)
+  if(HAVE_PTHREAD_H)
+    set(CMAKE_THREAD_PREFER_PTHREAD 1)
+    find_package(Threads)
+    if(CMAKE_USE_PTHREADS_INIT)
+      set(CURL_LIBS ${CURL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
+      set(USE_THREADS_POSIX 1)
+    endif()
+  endif()
+endif()
+
 # Check for all needed libraries
 if(0) # This code not needed for building within CMake.
 check_library_exists_concat("dl"     dlopen       HAVE_LIBDL)
@@ -277,19 +346,78 @@ if(NOT NOT_NEED_LIBNSL)
   check_library_exists_concat("nsl"    gethostbyname  HAVE_LIBNSL)
 endif(NOT NOT_NEED_LIBNSL)
 
+check_function_exists(gethostname HAVE_GETHOSTNAME)
+
 if(WIN32)
   check_library_exists_concat("ws2_32" getch        HAVE_LIBWS2_32)
   check_library_exists_concat("winmm"  getch        HAVE_LIBWINMM)
 endif()
 
+set(USE_OPENSSL OFF)
+set(HAVE_LIBCRYPTO OFF)
+set(HAVE_LIBSSL OFF)
+
+if(CMAKE_USE_OPENSSL)
+  find_package(OpenSSL)
+  if(OPENSSL_FOUND)
+    list(APPEND CURL_LIBS ${OPENSSL_LIBRARIES})
+    set(USE_OPENSSL ON)
+    set(HAVE_LIBCRYPTO ON)
+    set(HAVE_LIBSSL ON)
+    include_directories(${OPENSSL_INCLUDE_DIR})
+    set(CMAKE_REQUIRED_INCLUDES ${OPENSSL_INCLUDE_DIR})
+    check_include_file("openssl/crypto.h" HAVE_OPENSSL_CRYPTO_H)
+    check_include_file("openssl/engine.h" HAVE_OPENSSL_ENGINE_H)
+    check_include_file("openssl/err.h"    HAVE_OPENSSL_ERR_H)
+    check_include_file("openssl/pem.h"    HAVE_OPENSSL_PEM_H)
+    check_include_file("openssl/pkcs12.h" HAVE_OPENSSL_PKCS12_H)
+    check_include_file("openssl/rsa.h"    HAVE_OPENSSL_RSA_H)
+    check_include_file("openssl/ssl.h"    HAVE_OPENSSL_SSL_H)
+    check_include_file("openssl/x509.h"   HAVE_OPENSSL_X509_H)
+    check_include_file("openssl/rand.h"   HAVE_OPENSSL_RAND_H)
+
+    # Optionally build with a specific CA cert bundle.
+    if(CURL_CA_BUNDLE)
+      add_definitions(-DCURL_CA_BUNDLE="${CURL_CA_BUNDLE}")
+    endif()
+    # Optionally build with a specific CA cert dir.
+    if(CURL_CA_PATH)
+      add_definitions(-DCURL_CA_PATH="${CURL_CA_PATH}")
+    endif()
+  endif()
+elseif(WIN32)
+  # Use Windows SSL/TLS native implementation.
+  add_definitions(-DUSE_SCHANNEL)
+  set(USE_WINDOWS_SSPI 1)
+elseif(APPLE)
+  # Use OS X SSL/TLS native implementation if available on target version.
+  if(CMAKE_OSX_DEPLOYMENT_TARGET)
+    set(OSX_VERSION ${CMAKE_OSX_DEPLOYMENT_TARGET})
+  else()
+    execute_process(
+      COMMAND sw_vers -productVersion
+      OUTPUT_VARIABLE OSX_VERSION
+      OUTPUT_STRIP_TRAILING_WHITESPACE
+      )
+  endif()
+  if(NOT OSX_VERSION VERSION_LESS 10.6 AND
+     CMAKE_C_COMPILER_ID MATCHES "GNU|Clang|AppleClang")
+    add_definitions(-DUSE_DARWINSSL)
+    list(APPEND CURL_LIBS
+      "-framework CoreFoundation"
+      "-framework Security"
+      )
+  endif()
+endif()
+
 if(NOT CURL_DISABLE_LDAP)
 
   if(WIN32)
-    option(CURL_LDAP_WIN "Use Windows LDAP implementation" ON)
-    if(CURL_LDAP_WIN)
+    option(USE_WIN32_LDAP "Use Windows LDAP implementation" ON)
+    if(USE_WIN32_LDAP)
       check_library_exists("wldap32" cldap_open "" HAVE_WLDAP32)
       if(NOT HAVE_WLDAP32)
-        set(CURL_LDAP_WIN OFF)
+        set(USE_WIN32_LDAP OFF)
       endif()
     endif()
   endif()
@@ -299,13 +427,14 @@ if(NOT CURL_DISABLE_LDAP)
   set(CMAKE_LDAP_LIB "ldap" CACHE STRING "Name or full path to ldap library")
   set(CMAKE_LBER_LIB "lber" CACHE STRING "Name or full path to lber library")
 
-  if(CMAKE_USE_OPENLDAP AND CURL_LDAP_WIN)
-    message(FATAL_ERROR "Cannot use CURL_LDAP_WIN and CMAKE_USE_OPENLDAP at the same time")
+  if(CMAKE_USE_OPENLDAP AND USE_WIN32_LDAP)
+    message(FATAL_ERROR "Cannot use USE_WIN32_LDAP and CMAKE_USE_OPENLDAP at the same time")
   endif()
   
   # Now that we know, we're not using windows LDAP...
-  if(NOT CURL_LDAP_WIN)
+  if(NOT USE_WIN32_LDAP)
     # Check for LDAP
+    set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_LIBRARIES})
     check_library_exists_concat(${CMAKE_LDAP_LIB} ldap_init HAVE_LIBLDAP)
     check_library_exists_concat(${CMAKE_LBER_LIB} ber_init HAVE_LIBLBER)
   else()
@@ -359,8 +488,8 @@ if(NOT CURL_DISABLE_LDAP)
         return 0;
       }"
     )
-    set(CMAKE_REQUIRED_DEFINITIONS "-DLDAP_DEPRECATED=1" "-DWIN32_LEAN_AND_MEAN")
-    set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_LDAP_LIB})
+    set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -DLDAP_DEPRECATED=1")
+    list(APPEND CMAKE_REQUIRED_LIBRARIES ${CMAKE_LDAP_LIB})
     if(HAVE_LIBLBER)
       list(APPEND CMAKE_REQUIRED_LIBRARIES ${CMAKE_LBER_LIB})
     endif()
@@ -394,9 +523,6 @@ check_library_exists_concat("idn" idna_to_ascii_lz HAVE_LIBIDN)
 # Check for symbol dlopen (same as HAVE_LIBDL)
 check_library_exists("${CURL_LIBS}" dlopen "" HAVE_DLOPEN)
 
-# For other tests to use the same libraries
-set(CMAKE_REQUIRED_LIBRARIES ${CURL_LIBS})
-
 if(0) # This code not needed for building within CMake.
 option(CURL_ZLIB "Set to ON to enable building cURL with zlib support." ON)
 set(HAVE_LIBZ OFF)
@@ -409,6 +535,7 @@ if(CURL_ZLIB)
     set(HAVE_ZLIB ON)
     set(HAVE_LIBZ ON)
     list(APPEND CURL_LIBS ${ZLIB_LIBRARIES})
+    include_directories(${ZLIB_INCLUDE_DIRS})
   endif()
 endif()
 endif()
@@ -423,67 +550,6 @@ if(CURL_SPECIAL_LIBZ)
   set(HAVE_ZLIB_H 0)
 endif()
 
-#-----------------------------------------------------------------------------
-
-set(USE_SSLEAY OFF)
-set(USE_OPENSSL OFF)
-set(HAVE_LIBCRYPTO OFF)
-set(HAVE_LIBSSL OFF)
-
-if(CMAKE_USE_OPENSSL)
-  find_package(OpenSSL)
-  if(OPENSSL_FOUND)
-    list(APPEND CURL_LIBS ${OPENSSL_LIBRARIES})
-    set(USE_SSLEAY ON)
-    set(USE_OPENSSL ON)
-    set(HAVE_LIBCRYPTO ON)
-    set(HAVE_LIBSSL ON)
-    include_directories(${OPENSSL_INCLUDE_DIR})
-    set(CMAKE_REQUIRED_INCLUDES ${OPENSSL_INCLUDE_DIR})
-    check_include_file("openssl/crypto.h" HAVE_OPENSSL_CRYPTO_H)
-    check_include_file("openssl/engine.h" HAVE_OPENSSL_ENGINE_H)
-    check_include_file("openssl/err.h"    HAVE_OPENSSL_ERR_H)
-    check_include_file("openssl/pem.h"    HAVE_OPENSSL_PEM_H)
-    check_include_file("openssl/pkcs12.h" HAVE_OPENSSL_PKCS12_H)
-    check_include_file("openssl/rsa.h"    HAVE_OPENSSL_RSA_H)
-    check_include_file("openssl/ssl.h"    HAVE_OPENSSL_SSL_H)
-    check_include_file("openssl/x509.h"   HAVE_OPENSSL_X509_H)
-    check_include_file("openssl/rand.h"   HAVE_OPENSSL_RAND_H)
-
-    # Optionally build with a specific CA cert bundle.
-    if(CURL_CA_BUNDLE)
-      add_definitions(-DCURL_CA_BUNDLE="${CURL_CA_BUNDLE}")
-    endif()
-    # Optionally build with a specific CA cert dir.
-    if(CURL_CA_PATH)
-      add_definitions(-DCURL_CA_PATH="${CURL_CA_PATH}")
-    endif()
-  endif(OPENSSL_FOUND)
-elseif(WIN32)
-  # Use Windows SSL/TLS native implementation.
-  add_definitions(-DUSE_SCHANNEL)
-  set(USE_WINDOWS_SSPI 1)
-elseif(APPLE)
-  # Use OS X SSL/TLS native implementation if available on target version.
-  if(CMAKE_OSX_DEPLOYMENT_TARGET)
-    set(OSX_VERSION ${CMAKE_OSX_DEPLOYMENT_TARGET})
-  else()
-    execute_process(
-      COMMAND sw_vers -productVersion
-      OUTPUT_VARIABLE OSX_VERSION
-      OUTPUT_STRIP_TRAILING_WHITESPACE
-      )
-  endif()
-  if(NOT OSX_VERSION VERSION_LESS 10.6 AND
-     CMAKE_C_COMPILER_ID MATCHES "GNU|Clang|AppleClang")
-    add_definitions(-DUSE_DARWINSSL)
-    list(APPEND CURL_LIBS
-      "-framework CoreFoundation"
-      "-framework Security"
-      )
-  endif()
-endif()
-
 #libSSH2
 option(CMAKE_USE_LIBSSH2 "Use libSSH2" ON)
 mark_as_advanced(CMAKE_USE_LIBSSH2)
@@ -497,6 +563,7 @@ if(CMAKE_USE_LIBSSH2)
     list(APPEND CURL_LIBS ${LIBSSH2_LIBRARY})
     set(CMAKE_REQUIRED_LIBRARIES ${LIBSSH2_LIBRARY})
     set(CMAKE_REQUIRED_INCLUDES "${LIBSSH2_INCLUDE_DIR}")
+    include_directories("${LIBSSH2_INCLUDE_DIR}")
     set(HAVE_LIBSSH2 ON)
     set(USE_LIBSSH2 ON)
 
@@ -517,26 +584,87 @@ if(CMAKE_USE_LIBSSH2)
   endif(LIBSSH2_FOUND)
 endif(CMAKE_USE_LIBSSH2)
 
-# If we have features.h, then do the _BSD_SOURCE magic
-check_include_file("features.h"       HAVE_FEATURES_H)
+option(CMAKE_USE_GSSAPI "Use GSSAPI implementation (right now only Heimdal is supported with CMake build)" OFF)
+mark_as_advanced(CMAKE_USE_GSSAPI)
 
-# Check for header files
-if(NOT UNIX)
-  check_include_file_concat("ws2tcpip.h"     HAVE_WS2TCPIP_H)
-  check_include_file_concat("winsock2.h"     HAVE_WINSOCK2_H)
+if(CMAKE_USE_GSSAPI)
+  find_package(GSS)
+
+  set(HAVE_GSSAPI ${GSS_FOUND})
+  if(GSS_FOUND)
+
+    message(STATUS "Found ${GSS_FLAVOUR} GSSAPI version: \"${GSS_VERSION}\"")
+
+    set(CMAKE_REQUIRED_INCLUDES ${GSS_INCLUDE_DIR})
+    check_include_file_concat("gssapi/gssapi.h"  HAVE_GSSAPI_GSSAPI_H)
+    check_include_file_concat("gssapi/gssapi_generic.h" HAVE_GSSAPI_GSSAPI_GENERIC_H)
+    check_include_file_concat("gssapi/gssapi_krb5.h" HAVE_GSSAPI_GSSAPI_KRB5_H)
+
+    if(GSS_FLAVOUR STREQUAL "Heimdal")
+      set(HAVE_GSSHEIMDAL ON)
+    else() # MIT
+      set(HAVE_GSSMIT ON)
+      set(_INCLUDE_LIST "")
+      if(HAVE_GSSAPI_GSSAPI_H)
+        list(APPEND _INCLUDE_LIST "gssapi/gssapi.h")
+      endif()
+      if(HAVE_GSSAPI_GSSAPI_GENERIC_H)
+        list(APPEND _INCLUDE_LIST "gssapi/gssapi_generic.h")
+      endif()
+      if(HAVE_GSSAPI_GSSAPI_KRB5_H)
+        list(APPEND _INCLUDE_LIST "gssapi/gssapi_krb5.h")
+      endif()
+
+      string(REPLACE ";" " " _COMPILER_FLAGS_STR "${GSS_COMPILER_FLAGS}")
+      string(REPLACE ";" " " _LINKER_FLAGS_STR "${GSS_LINKER_FLAGS}")
+
+      foreach(_dir ${GSS_LINK_DIRECTORIES})
+        set(_LINKER_FLAGS_STR "${_LINKER_FLAGS_STR} -L\"${_dir}\"")
+      endforeach()
+
+      set(CMAKE_REQUIRED_FLAGS "${_COMPILER_FLAGS_STR} ${_LINKER_FLAGS_STR}")
+      set(CMAKE_REQUIRED_LIBRARIES ${GSS_LIBRARIES})
+      check_symbol_exists("GSS_C_NT_HOSTBASED_SERVICE" ${_INCLUDE_LIST} HAVE_GSS_C_NT_HOSTBASED_SERVICE)
+      if(NOT HAVE_GSS_C_NT_HOSTBASED_SERVICE)
+        set(HAVE_OLD_GSSMIT ON)
+      endif()
+
+    endif()
+
+    include_directories(${GSS_INCLUDE_DIR})
+    link_directories(${GSS_LINK_DIRECTORIES})
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${GSS_COMPILER_FLAGS}")
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${GSS_LINKER_FLAGS}")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GSS_LINKER_FLAGS}")
+    list(APPEND CURL_LIBS ${GSS_LIBRARIES})
+
+  else()
+    message(WARNING "GSSAPI support has been requested but no supporting libraries found. Skipping.")
+  endif()
+endif()
+
+option(ENABLE_UNIX_SOCKETS "Define if you want Unix domain sockets support" ON)
+if(ENABLE_UNIX_SOCKETS)
+  include(CheckStructHasMember)
+  check_struct_has_member("struct sockaddr_un" sun_path "sys/un.h" USE_UNIX_SOCKETS)
 else()
-  set(HAVE_WS2TCPIP_H 0)
-  set(HAVE_WINSOCK2_H 0)
+  unset(USE_UNIX_SOCKETS CACHE)
 endif()
-check_include_file_concat("stdio.h"          HAVE_STDIO_H)
+
+# Check for header files
 if(NOT UNIX)
   check_include_file_concat("windows.h"      HAVE_WINDOWS_H)
   check_include_file_concat("winsock.h"      HAVE_WINSOCK_H)
+  check_include_file_concat("ws2tcpip.h"     HAVE_WS2TCPIP_H)
+  check_include_file_concat("winsock2.h"     HAVE_WINSOCK2_H)
 else()
   set(HAVE_WINDOWS_H 0)
   set(HAVE_WINSOCK_H 0)
+  set(HAVE_WS2TCPIP_H 0)
+  set(HAVE_WINSOCK2_H 0)
 endif()
 
+check_include_file_concat("stdio.h"          HAVE_STDIO_H)
 check_include_file_concat("inttypes.h"       HAVE_INTTYPES_H)
 check_include_file_concat("sys/filio.h"      HAVE_SYS_FILIO_H)
 check_include_file_concat("sys/ioctl.h"      HAVE_SYS_IOCTL_H)
@@ -561,9 +689,6 @@ check_include_file_concat("des.h"            HAVE_DES_H)
 check_include_file_concat("err.h"            HAVE_ERR_H)
 check_include_file_concat("errno.h"          HAVE_ERRNO_H)
 check_include_file_concat("fcntl.h"          HAVE_FCNTL_H)
-check_include_file_concat("gssapi/gssapi.h"  HAVE_GSSAPI_GSSAPI_H)
-check_include_file_concat("gssapi/gssapi_generic.h" HAVE_GSSAPI_GSSAPI_GENERIC_H)
-check_include_file_concat("gssapi/gssapi_krb5.h" HAVE_GSSAPI_GSSAPI_KRB5_H)
 check_include_file_concat("idn-free.h"       HAVE_IDN_FREE_H)
 check_include_file_concat("ifaddrs.h"        HAVE_IFADDRS_H)
 check_include_file_concat("io.h"             HAVE_IO_H)
@@ -636,6 +761,12 @@ find_file(RANDOM_FILE urandom /dev)
 mark_as_advanced(RANDOM_FILE)
 
 # Check for some functions that are used
+if(HAVE_LIBWS2_32)
+  set(CMAKE_REQUIRED_LIBRARIES ws2_32)
+elseif(HAVE_LIBSOCKET)
+  set(CMAKE_REQUIRED_LIBRARIES socket)
+endif()
+
 check_symbol_exists(basename      "${CURL_INCLUDES}" HAVE_BASENAME)
 check_symbol_exists(socket        "${CURL_INCLUDES}" HAVE_SOCKET)
 check_symbol_exists(poll          "${CURL_INCLUDES}" HAVE_POLL)
@@ -678,7 +809,6 @@ if(CMAKE_USE_OPENSSL)
     HAVE_CRYPTO_CLEANUP_ALL_EX_DATA)
   if(HAVE_LIBCRYPTO AND HAVE_LIBSSL)
     set(USE_OPENSSL 1)
-    set(USE_SSLEAY 1)
   endif(HAVE_LIBCRYPTO AND HAVE_LIBSSL)
 endif(CMAKE_USE_OPENSSL)
 check_symbol_exists(gmtime_r      "${CURL_INCLUDES}" HAVE_GMTIME_R)
@@ -699,6 +829,7 @@ check_symbol_exists(strerror_r     "${CURL_INCLUDES}" HAVE_STRERROR_R)
 check_symbol_exists(siginterrupt   "${CURL_INCLUDES}" HAVE_SIGINTERRUPT)
 check_symbol_exists(perror         "${CURL_INCLUDES}" HAVE_PERROR)
 check_symbol_exists(fork           "${CURL_INCLUDES}" HAVE_FORK)
+check_symbol_exists(getaddrinfo    "${CURL_INCLUDES}" HAVE_GETADDRINFO)
 check_symbol_exists(freeaddrinfo   "${CURL_INCLUDES}" HAVE_FREEADDRINFO)
 check_symbol_exists(freeifaddrs    "${CURL_INCLUDES}" HAVE_FREEIFADDRS)
 check_symbol_exists(pipe           "${CURL_INCLUDES}" HAVE_PIPE)
@@ -737,12 +868,7 @@ if(NOT HAVE_STRICMP)
   set(HAVE_LDAP_URL_PARSE 1)
 endif(NOT HAVE_STRICMP)
 
-
-
 # Do curl specific tests
-if(HAVE_LIBWS2_32)
-  set(CMAKE_REQUIRED_LIBRARIES ws2_32)
-endif()
 foreach(CURL_TEST
     HAVE_FCNTL_O_NONBLOCK
     HAVE_IOCTLSOCKET
@@ -929,24 +1055,6 @@ if(MSVC)
   add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
 endif(MSVC)
 
-# Sets up the dependencies (zlib, OpenSSL, etc.) of a cURL subproject according to options.
-# TODO This is far to be complete!
-function(SETUP_CURL_DEPENDENCIES TARGET_NAME)
-  if(CURL_ZLIB AND ZLIB_FOUND)
-    include_directories(${ZLIB_INCLUDE_DIR})
-  endif()
-
-  if(CMAKE_USE_OPENSSL AND OPENSSL_FOUND)
-    include_directories(${OPENSSL_INCLUDE_DIR})
-  endif()
-
-  if(CMAKE_USE_LIBSSH2 AND LIBSSH2_FOUND)
-    include_directories(${LIBSSH2_INCLUDE_DIR})
-  endif()
-
-  target_link_libraries(${TARGET_NAME} ${CURL_LIBS})
-endfunction()
-
 # Ugly (but functional) way to include "Makefile.inc" by transforming it (= regenerate it).
 function(TRANSFORM_MAKEFILE_INC INPUT_FILE OUTPUT_FILE)
   file(READ ${INPUT_FILE} MAKEFILE_INC_TEXT)
@@ -984,6 +1092,133 @@ install(FILES COPYING DESTINATION ${CMAKE_DOC_DIR}/cmcurl)
 #-----------------------------------------------------------------------------
 
 if(0) # This code not needed for building within CMake.
+# TODO support GNUTLS, NSS, POLARSSL, AXTLS, CYASSL, WINSSL, DARWINSSL
+if(USE_OPENSSL)
+  set(SSL_ENABLED 1)
+endif()
+
+# Helper to populate a list (_items) with a label when conditions (the remaining
+# args) are satisfied
+function(_add_if label)
+  # TODO need to disable policy CMP0054 (CMake 3.1) to allow this indirection
+  if(${ARGN})
+    set(_items ${_items} "${label}" PARENT_SCOPE)
+  endif()
+endfunction()
+
+# Clear list and try to detect available features
+set(_items)
+_add_if("SSL"           SSL_ENABLED)
+_add_if("IPv6"          ENABLE_IPV6)
+_add_if("unix-sockets"  USE_UNIX_SOCKETS)
+_add_if("libz"          HAVE_LIBZ)
+_add_if("AsynchDNS"     USE_ARES OR USE_THREADS_POSIX)
+_add_if("IDN"           HAVE_LIBIDN)
+# TODO SSP1 (WinSSL) check is missing
+_add_if("SSPI"          USE_WINDOWS_SSPI)
+_add_if("GSS-API"       HAVE_GSSAPI)
+# TODO SSP1 missing for SPNEGO
+_add_if("SPNEGO"        NOT CURL_DISABLE_CRYPTO_AUTH AND
+                        (HAVE_GSSAPI OR USE_WINDOWS_SSPI))
+_add_if("Kerberos"      NOT CURL_DISABLE_CRYPTO_AUTH AND
+                        (HAVE_GSSAPI OR USE_WINDOWS_SSPI))
+# NTLM support requires crypto function adaptions from various SSL libs
+# TODO alternative SSL libs tests for SSP1, GNUTLS, NSS, DARWINSSL
+if(NOT CURL_DISABLE_CRYPTO_AUTH AND (USE_OPENSSL OR
+   USE_WINDOWS_SSPI OR GNUTLS_ENABLED OR NSS_ENABLED OR DARWINSSL_ENABLED))
+  _add_if("NTLM"        1)
+  # TODO missing option (autoconf: --enable-ntlm-wb)
+  _add_if("NTLM_WB"     NOT CURL_DISABLE_HTTP AND NTLM_WB_ENABLED)
+endif()
+# TODO missing option (--enable-tls-srp), depends on GNUTLS_SRP/OPENSSL_SRP
+_add_if("TLS-SRP"       USE_TLS_SRP)
+# TODO option --with-nghttp2 tests for nghttp2 lib and nghttp2/nghttp2.h header
+_add_if("HTTP2"         USE_NGHTTP2)
+string(REPLACE ";" " " SUPPORT_FEATURES "${_items}")
+message(STATUS "Enabled features: ${SUPPORT_FEATURES}")
+
+# Clear list and try to detect available protocols
+set(_items)
+_add_if("HTTP"          NOT CURL_DISABLE_HTTP)
+_add_if("HTTPS"         NOT CURL_DISABLE_HTTP AND SSL_ENABLED)
+_add_if("FTP"           NOT CURL_DISABLE_FTP)
+_add_if("FTPS"          NOT CURL_DISABLE_FTP AND SSL_ENABLED)
+_add_if("FILE"          NOT CURL_DISABLE_FILE)
+_add_if("TELNET"        NOT CURL_DISABLE_TELNET)
+_add_if("LDAP"          NOT CURL_DISABLE_LDAP)
+# CURL_DISABLE_LDAP implies CURL_DISABLE_LDAPS
+# TODO check HAVE_LDAP_SSL (in autoconf this is enabled with --enable-ldaps)
+_add_if("LDAPS"         NOT CURL_DISABLE_LDAPS AND
+                        ((USE_OPENLDAP AND SSL_ENABLED) OR
+                        (NOT USE_OPENLDAP AND HAVE_LDAP_SSL)))
+_add_if("DICT"          NOT CURL_DISABLE_DICT)
+_add_if("TFTP"          NOT CURL_DISABLE_TFTP)
+_add_if("GOPHER"        NOT CURL_DISABLE_GOPHER)
+_add_if("POP3"          NOT CURL_DISABLE_POP3)
+_add_if("POP3S"         NOT CURL_DISABLE_POP3 AND SSL_ENABLED)
+_add_if("IMAP"          NOT CURL_DISABLE_IMAP)
+_add_if("IMAPS"         NOT CURL_DISABLE_IMAP AND SSL_ENABLED)
+_add_if("SMTP"          NOT CURL_DISABLE_SMTP)
+_add_if("SMTPS"         NOT CURL_DISABLE_SMTP AND SSL_ENABLED)
+_add_if("SCP"           USE_LIBSSH2)
+_add_if("SFTP"          USE_LIBSSH2)
+_add_if("RTSP"          NOT CURL_DISABLE_RTSP)
+_add_if("RTMP"          USE_LIBRTMP)
+list(SORT _items)
+string(REPLACE ";" " " SUPPORT_PROTOCOLS "${_items}")
+message(STATUS "Enabled protocols: ${SUPPORT_PROTOCOLS}")
+
+# curl-config needs the following options to be set.
+set(CC                      "${CMAKE_C_COMPILER}")
+# TODO probably put a -D... options here?
+set(CONFIGURE_OPTIONS       "")
+# TODO when to set "-DCURL_STATICLIB" for CPPFLAG_CURL_STATICLIB?
+set(CPPFLAG_CURL_STATICLIB  "")
+# TODO need to set this (see CURL_CHECK_CA_BUNDLE in acinclude.m4)
+set(CURL_CA_BUNDLE          "")
+set(CURLVERSION             "${CURL_VERSION}")
+set(ENABLE_SHARED           "yes")
+if(CURL_STATICLIB)
+  # Broken: LIBCURL_LIBS below; .a lib is not built
+  message(WARNING "Static linking is broken!")
+  set(ENABLE_STATIC         "no")
+else()
+  set(ENABLE_STATIC         "no")
+endif()
+set(exec_prefix             "\${prefix}")
+set(includedir              "\${prefix}/include")
+set(LDFLAGS                 "${CMAKE_SHARED_LINKER_FLAGS}")
+set(LIBCURL_LIBS            "")
+set(libdir                  "${CMAKE_INSTALL_PREFIX}/lib")
+# TODO CURL_LIBS also contains absolute paths which don't work with static -l...
+foreach(_lib ${CMAKE_C_IMPLICIT_LINK_LIBRARIES} ${CURL_LIBS})
+  set(LIBCURL_LIBS          "${LIBCURL_LIBS} -l${_lib}")
+endforeach()
+# "a" (Linux) or "lib" (Windows)
+string(REPLACE "." "" libext "${CMAKE_STATIC_LIBRARY_SUFFIX}")
+set(prefix                  "${CMAKE_INSTALL_PREFIX}")
+# Set this to "yes" to append all libraries on which -lcurl is dependent
+set(REQUIRE_LIB_DEPS        "no")
+# SUPPORT_FEATURES
+# SUPPORT_PROTOCOLS
+set(VERSIONNUM              "${CURL_VERSION_NUM}")
+
+# Finally generate a "curl-config" matching this config
+configure_file("${CURL_SOURCE_DIR}/curl-config.in"
+               "${CURL_BINARY_DIR}/curl-config" @ONLY)
+install(FILES "${CMAKE_BINARY_DIR}/curl-config"
+        DESTINATION bin
+        PERMISSIONS
+          OWNER_READ OWNER_WRITE OWNER_EXECUTE
+          GROUP_READ GROUP_EXECUTE
+          WORLD_READ WORLD_EXECUTE)
+
+# Finally generate a pkg-config file matching this config
+configure_file("${CURL_SOURCE_DIR}/libcurl.pc.in"
+               "${CURL_BINARY_DIR}/libcurl.pc" @ONLY)
+install(FILES "${CMAKE_BINARY_DIR}/libcurl.pc"
+        DESTINATION lib/pkgconfig)
+
 # This needs to be run very last so other parts of the scripts can take advantage of this.
 if(NOT CURL_CONFIG_HAS_BEEN_RUN_BEFORE)
   set(CURL_CONFIG_HAS_BEEN_RUN_BEFORE 1 CACHE INTERNAL "Flag to track whether this is the first time running CMake or if CMake has been configured before")