Cleanup FindOpenSSL. Add support for win64 installation.

Modules/FindOpenSSL.cmake

@@ -1,6 +1,9 @@
 # - Try to find the OpenSSL encryption library
 # Once done this will define
 #
+#  OPENSSL_ROOT_DIR - Set this variable to the root installation of OpenSSL
+#
+# Read-Only variables:
 #  OPENSSL_FOUND - system has the OpenSSL library
 #  OPENSSL_INCLUDE_DIR - the OpenSSL include directory
 #  OPENSSL_LIBRARIES - The libraries needed to use OpenSSL
@@ -8,7 +11,7 @@
 #=============================================================================
 # Copyright 2006-2009 Kitware, Inc.
 # Copyright 2006 Alexander Neundorf <[email protected]>
-# Copyright 2009 Mathieu Malaterre <[email protected]>
+# Copyright 2009-2010 Mathieu Malaterre <[email protected]>
 #
 # Distributed under the OSI-approved BSD License (the "License");
 # see accompanying file Copyright.txt for details.
@@ -21,8 +24,23 @@
 #  License text for the above reference.)
 
 # http://www.slproweb.com/products/Win32OpenSSL.html
+SET(_OPENSSL_ROOT_HINTS
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]"
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (64-bit)_is1;Inno Setup: App Path]"
+  )
+SET(_OPENSSL_ROOT_PATHS
+  "C:/OpenSSL/"
+  )
+FIND_PATH(OPENSSL_ROOT_DIR
+  NAMES include/openssl/ssl.h
+  HINTS ${_OPENSSL_HINTS}
+  PATHS ${_OPENSSL_PATHS}
+)
+MARK_AS_ADVANCED(OPENSSL_ROOT_DIR)
+
+# Re-use the previous path:
 FIND_PATH(OPENSSL_INCLUDE_DIR openssl/ssl.h
-  PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]/include"
+  ${OPENSSL_ROOT_DIR}/include
 )
 
 IF(WIN32 AND NOT CYGWIN)
@@ -43,16 +61,16 @@ IF(WIN32 AND NOT CYGWIN)
     # libeay32MD.lib is identical to ../libeay32.lib, and
     # ssleay32MD.lib is identical to ../ssleay32.lib
     FIND_LIBRARY(LIB_EAY_DEBUG NAMES libeay32MDd libeay32
-      PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]/lib/VC"
+      ${OPENSSL_ROOT_DIR}/lib/VC
       )
     FIND_LIBRARY(LIB_EAY_RELEASE NAMES libeay32MD libeay32
-      PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]/lib/VC"
+      ${OPENSSL_ROOT_DIR}/lib/VC
       )
     FIND_LIBRARY(SSL_EAY_DEBUG NAMES ssleay32MDd ssleay32 ssl
-      PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]/lib/VC"
+      ${OPENSSL_ROOT_DIR}/lib/VC
       )
     FIND_LIBRARY(SSL_EAY_RELEASE NAMES ssleay32MD ssleay32 ssl
-      PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]/lib/VC"
+      ${OPENSSL_ROOT_DIR}/lib/VC
       )
     if( CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE )
       set( OPENSSL_LIBRARIES
@@ -67,20 +85,20 @@ IF(WIN32 AND NOT CYGWIN)
   ELSEIF(MINGW)
     # same player, for MingW
     FIND_LIBRARY(LIB_EAY NAMES libeay32
-      PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]/lib/MinGW"
+      ${OPENSSL_ROOT_DIR}/lib/MinGW
       )
     FIND_LIBRARY(SSL_EAY NAMES ssleay32
-      PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]/lib/MinGW"
+      ${OPENSSL_ROOT_DIR}/lib/MinGW
       )
     MARK_AS_ADVANCED(SSL_EAY LIB_EAY)
     set( OPENSSL_LIBRARIES ${SSL_EAY} ${LIB_EAY} )
   ELSE(MSVC)
     # Not sure what to pick for -say- intel, let's use the toplevel ones and hope someone report issues:
     FIND_LIBRARY(LIB_EAY NAMES libeay32
-      PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]/lib"
+      ${OPENSSL_ROOT_DIR}/lib
       )
     FIND_LIBRARY(SSL_EAY NAMES ssleay32
-      PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]/lib"
+      ${OPENSSL_ROOT_DIR}/lib
       )
     MARK_AS_ADVANCED(SSL_EAY LIB_EAY)
     set( OPENSSL_LIBRARIES ${SSL_EAY} ${LIB_EAY} )