Don't link dirrectly against openssl

All our crypto code is handled by qt nodaways.
No need to carry this dependency.

Especially since it causes warnings on system where there are
twp openssl version installed:
/usr/bin/ld: warning: libcrypto.so.1.0.0, needed by /usr/lib/libQt5Network.so.5.9.0, may conflict with libcrypto.so.1.1

CMakeLists.txt

@@ -153,8 +153,6 @@ if(APPLE)
   set( SOCKETAPI_TEAM_IDENTIFIER_PREFIX "" CACHE STRING "SocketApi prefix (including a following dot) that must match the codesign key's TeamIdentifier/Organizational Unit" )
 endif()
 
-find_package(OpenSSL 1.0.0 REQUIRED)
-
 if(APPLE)
   find_package(Sparkle)
 endif(APPLE)

doc/building.rst

@@ -120,7 +120,6 @@ follow `Windows Installer Build (Cross-Compile)`_ instead.
 
    * Make sure that you have CMake_ and Git_.
    * Download the Qt_ MinGW package. You will use the MinGW version bundled with it.
-   * Download an `OpenSSL Windows Build`_ (the non-"Light" version)
 
 2. Get the QtKeychain_ sources as well as the latest versions of the ownCloud client
    from Git as follows::
@@ -130,11 +129,10 @@ follow `Windows Installer Build (Cross-Compile)`_ instead.
 
 3. Open the Qt MinGW shortcut console from the Start Menu
 
-4. Make sure that OpenSSL's ``bin`` directory as well as your qtkeychain source
-   directories are in your PATH. This will allow CMake to find the library and
-   headers, as well as allow the ownCloud client to find the DLLs at runtime::
+4. Make sure that your qtkeychain source directories are in your PATH. This will
+   allow CMake to find the library and headers, as well as allow the ownCloud
+   client to find the DLLs at runtime::
 
-    set PATH=C:\<OpenSSL Install Dir>\bin;%PATH%
     set PATH=C:\<qtkeychain Clone Dir>;%PATH%
 
 5. Build qtkeychain **directly in the source directory** so that the DLL is built
@@ -251,7 +249,7 @@ To build the most up-to-date version of the client:
             
    .. note:: qtkeychain must be compiled with the same prefix e.g ``CMAKE_INSTALL_PREFIX=/Users/path/to/client/install/ .``
    
-   .. note:: Example:: ``cmake -DCMAKE_PREFIX_PATH=/usr/local/opt/qt5 -DCMAKE_INSTALL_PREFIX=/Users/path/to/client/install/  -D_OPENSSL_LIBDIR=/usr/local/opt/openssl/lib/ -D_OPENSSL_INCLUDEDIR=/usr/local/opt/openssl/include/  -D_OPENSSL_VERSION=1.0.2a -DOPENSSL_INCLUDE_DIR=/usr/local/opt/openssl/include/ -DNO_SHIBBOLETH=1``
+   .. note:: Example:: ``cmake -DCMAKE_PREFIX_PATH=/usr/local/opt/qt5 -DCMAKE_INSTALL_PREFIX=/Users/path/to/client/install/  -DNO_SHIBBOLETH=1``
    
 4. Call ``make``.
 
@@ -279,7 +277,6 @@ The following are known cmake parameters:
 .. _Git: http://git-scm.com
 .. _MacPorts: http://www.macports.org
 .. _Homebrew: http://mxcl.github.com/homebrew/
-.. _OpenSSL Windows Build: http://slproweb.com/products/Win32OpenSSL.html
 .. _Qt: http://www.qt.io/download
 .. _Microsoft Authenticode: https://msdn.microsoft.com/en-us/library/ie/ms537361%28v=vs.85%29.aspx
 .. _QtKeychain: https://github.com/frankosterfeld/qtkeychain

src/gui/CMakeLists.txt

@@ -176,7 +176,6 @@ set(3rdparty_INC
     )
 
 include_directories(${3rdparty_INC})
-include_directories(${OPENSSL_INCLUDE_DIR})
 
 # csync is required.
 include_directories(${CMAKE_SOURCE_DIR}/csync/src

src/gui/application.cpp

@@ -53,8 +53,6 @@
 #include <QMenu>
 #include <QMessageBox>
 
-#include <openssl/crypto.h>
-
 class QSocket;
 
 namespace OCC {

src/libsync/CMakeLists.txt

@@ -9,7 +9,6 @@ include_directories(${CMAKE_SOURCE_DIR}/csync/src
                     ${CMAKE_BINARY_DIR}/csync
                     ${CMAKE_BINARY_DIR}/csync/src
                    )
-include_directories(${OPENSSL_INCLUDE_DIR})
 
 if ( APPLE )
     list(APPEND OS_SPECIFIC_LINK_LIBRARIES
@@ -108,7 +107,6 @@ list(APPEND libsync_LINK_TARGETS
     ${QT_LIBRARIES}
     ocsync
     ${OS_SPECIFIC_LINK_LIBRARIES}
-    ${OPENSSL_LIBRARIES}
 )
 
 if(QTKEYCHAIN_FOUND OR QT5KEYCHAIN_FOUND)