From a164649f9d4664e192b421d5b72f8bcfaacd7a16 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@cryptomilk.org>
Date: Mon, 28 Mar 2011 18:38:45 +0200
Subject: [PATCH] FindOpenSSL: We should only use hints to find OpenSSL.

---
 Modules/FindOpenSSL.cmake | 131 +++++++++++++++++++++++++++-----------
 1 file changed, 93 insertions(+), 38 deletions(-)

diff --git a/Modules/FindOpenSSL.cmake b/Modules/FindOpenSSL.cmake
index 4d0e67f4d..8f2c01945 100644
--- a/Modules/FindOpenSSL.cmake
+++ b/Modules/FindOpenSSL.cmake
@@ -33,27 +33,32 @@ endif (UNIX)
 
 # http://www.slproweb.com/products/Win32OpenSSL.html
 SET(_OPENSSL_ROOT_HINTS
+  $ENV{OPENSSL_ROOT_DIR}
+  ${OPENSSL_ROOT_DIR}
   "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]"
   "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (64-bit)_is1;Inno Setup: App Path]"
   )
 SET(_OPENSSL_ROOT_PATHS
+  "$ENV{PROGRAMFILES}/OpenSSL"
+  "$ENV{PROGRAMFILES}/OpenSSL-Win32"
+  "$ENV{PROGRAMFILES}/OpenSSL-Win64"
   "C:/OpenSSL/"
+  "C:/OpenSSL-Win32/"
+  "C:/OpenSSL-Win64/"
   )
-FIND_PATH(OPENSSL_ROOT_DIR
-  NAMES include/openssl/ssl.h
+SET(_OPENSSL_ROOT_HINTS_AND_PATHS
   HINTS ${_OPENSSL_ROOT_HINTS}
   PATHS ${_OPENSSL_ROOT_PATHS}
-  ENV OPENSSL_ROOT_DIR
-)
-MARK_AS_ADVANCED(OPENSSL_ROOT_DIR)
+  )
 
-# Re-use the previous path:
 FIND_PATH(OPENSSL_INCLUDE_DIR
   NAMES
     openssl/ssl.h
-  PATHS
+  HINTS
     ${_OPENSSL_INCLUDEDIR}
-    ${OPENSSL_ROOT_DIR}/include
+  ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+  PATH_SUFFIXES
+    include
 )
 
 IF(WIN32 AND NOT CYGWIN)
@@ -73,22 +78,52 @@ IF(WIN32 AND NOT CYGWIN)
     # We are using the libraries located in the VC subdir instead of the parent directory eventhough :
     # libeay32MD.lib is identical to ../libeay32.lib, and
     # ssleay32MD.lib is identical to ../ssleay32.lib
-    FIND_LIBRARY(LIB_EAY_DEBUG NAMES libeay32MDd libeay32
-      PATHS ${OPENSSL_ROOT_DIR}
-      PATH_SUFFIXES "lib" "VC" "lib/VC"
-      )
-    FIND_LIBRARY(LIB_EAY_RELEASE NAMES libeay32MD libeay32
-      PATHS ${OPENSSL_ROOT_DIR}
-      PATH_SUFFIXES "lib" "VC" "lib/VC"
-      )
-    FIND_LIBRARY(SSL_EAY_DEBUG NAMES ssleay32MDd ssleay32 ssl
-      PATHS ${OPENSSL_ROOT_DIR}
-      PATH_SUFFIXES "lib" "VC" "lib/VC"
-      )
-    FIND_LIBRARY(SSL_EAY_RELEASE NAMES ssleay32MD ssleay32 ssl
-      PATHS ${OPENSSL_ROOT_DIR}
-      PATH_SUFFIXES "lib" "VC" "lib/VC"
-      )
+    FIND_LIBRARY(LIB_EAY_DEBUG
+      NAMES
+        libeay32MDd
+        libeay32
+      ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "VC"
+        "lib/VC"
+    )
+
+    FIND_LIBRARY(LIB_EAY_RELEASE
+      NAMES
+        libeay32MD
+        libeay32
+      ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "VC"
+        "lib/VC"
+    )
+
+    FIND_LIBRARY(SSL_EAY_DEBUG
+      NAMES
+        ssleay32MDd
+        ssleay32
+        ssl
+      ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "VC"
+        "lib/VC"
+    )
+
+    FIND_LIBRARY(SSL_EAY_RELEASE
+      NAMES
+        ssleay32MD
+        ssleay32
+        ssl
+      ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "VC"
+        "lib/VC"
+    )
+
     if( CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE )
       set( OPENSSL_LIBRARIES
         optimized ${SSL_EAY_RELEASE} debug ${SSL_EAY_DEBUG}
@@ -101,14 +136,24 @@ IF(WIN32 AND NOT CYGWIN)
     MARK_AS_ADVANCED(LIB_EAY_DEBUG LIB_EAY_RELEASE)
   ELSEIF(MINGW)
     # same player, for MingW
-    FIND_LIBRARY(LIB_EAY NAMES libeay32
-      PATHS ${OPENSSL_ROOT_DIR}
-      PATH_SUFFIXES "lib" "VC" "lib/MinGW"
-      )
-    FIND_LIBRARY(SSL_EAY NAMES ssleay32
-      PATHS ${OPENSSL_ROOT_DIR}
-      PATH_SUFFIXES "lib" "VC" "lib/MinGW"
-      )
+    FIND_LIBRARY(LIB_EAY
+      NAMES
+        libeay32
+      ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "lib/MinGW"
+    )
+
+    FIND_LIBRARY(SSL_EAY
+      NAMES
+        ssleay32
+      ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "lib/MinGW"
+    )
+
     MARK_AS_ADVANCED(SSL_EAY LIB_EAY)
     set( OPENSSL_LIBRARIES ${SSL_EAY} ${LIB_EAY} )
   ELSE(MSVC)
@@ -116,17 +161,21 @@ IF(WIN32 AND NOT CYGWIN)
     FIND_LIBRARY(LIB_EAY
       NAMES
         libeay32
-      PATHS
+      HINTS
         ${_OPENSSL_LIBDIR}
-        ${OPENSSL_ROOT_DIR}/lib
+      ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        lib
     )
 
     FIND_LIBRARY(SSL_EAY
       NAMES
         ssleay32
-      PATHS
+      HINTS
         ${_OPENSSL_LIBDIR}
-        ${OPENSSL_ROOT_DIR}/lib
+      ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        lib
     )
 
     MARK_AS_ADVANCED(SSL_EAY LIB_EAY)
@@ -139,15 +188,21 @@ ELSE(WIN32 AND NOT CYGWIN)
       ssl
       ssleay32
       ssleay32MD
-    PATHS
+    HINTS
       ${_OPENSSL_LIBDIR}
+    ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+    PATH_SUFFIXES
+      lib
   )
 
   FIND_LIBRARY(OPENSSL_CRYPTO_LIBRARIES
     NAMES
       crypto
-    PATHS
+    HINTS
       ${_OPENSSL_LIBDIR}
+    ${_OPENSSL_ROOT_HINTS_AND_PATHS}
+    PATH_SUFFIXES
+      lib
   )
 
   MARK_AS_ADVANCED(OPENSSL_CRYPTO_LIBRARIES OPENSSL_SSL_LIBRARIES)