[LyX/master] msvc: always build 3rdparty libs

[Peter Kümmel]

commit 6dcecd91995b0c0e7ad9c5dfaf3e5ff6e9abd6d7
Author: Peter Kümmel <kuem...@lyx.org>
Date:   Wed Jan 20 19:23:10 2016 +0100

    msvc: always build 3rdparty libs

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 39880f2..2776d9d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -157,6 +157,7 @@ LYX_OPTION(VLD                   "Use VLD with MSVC" OFF 
MSVC)
 LYX_OPTION(WALL                  "Enable all warnings" OFF MSVC)
 LYX_OPTION(CONFIGURE_CHECKS      "Also run configure checks for MSVC" OFF MSVC)
 LYX_OPTION(DEPENDENCIES_DOWNLOAD "Download dependencies for MSVC 10" OFF MSVC)
+LYX_OPTION(3RDPARTY_BUILD        "Build 3rdparty libraries " OFF MSVC)
 
 # APPLE specific
 LYX_OPTION(DMG                   "Build as Mac bundle, needed for .dmg  
(experimental) " OFF MAC)
@@ -288,6 +289,9 @@ include(LyXPaths)
 file(STRINGS "${TOP_SRC_DIR}/configure.ac" _config_lines)
 
 if(WIN32)
+       if(MSVC)
+               set(LYX_3RDPARTY_BUILD ON)
+       endif()
        set(USE_WINDOWS_PACKAGING ON)
 elseif(APPLE)
        set(USE_MACOSX_PACKAGING ON)