```cmake
# -*- cmake -*-

if(INSTALL_PROPRIETARY)
  include(Prebuilt)
  use_prebuilt_binary(quicktime)
endif(INSTALL_PROPRIETARY)

if (DARWIN)
  include(CMakeFindFrameworks)
  find_library(QUICKTIME_LIBRARY QuickTime)
elseif (WINDOWS)
  set(QUICKTIME_SDK_DIR "$ENV{PROGRAMFILES}/QuickTime SDK"
      CACHE PATH "Location of the QuickTime SDK.")

  find_library(DEBUG_QUICKTIME_LIBRARY qtmlclient
               PATHS
               ${ARCH_PREBUILT_DIRS_DEBUG}
               "${QUICKTIME_SDK_DIR}\\libraries"
               )

  find_library(RELEASE_QUICKTIME_LIBRARY qtmlclient
               PATHS
               ${ARCH_PREBUILT_DIRS_RELEASE}
               "${QUICKTIME_SDK_DIR}\\libraries"
               )

  if (DEBUG_QUICKTIME_LIBRARY AND RELEASE_QUICKTIME_LIBRARY)
    set(QUICKTIME_LIBRARY 
        optimized ${RELEASE_QUICKTIME_LIBRARY}
        debug ${DEBUG_QUICKTIME_LIBRARY}
        )
        
  endif (DEBUG_QUICKTIME_LIBRARY AND RELEASE_QUICKTIME_LIBRARY)
  
  include_directories(
    ${LIBS_PREBUILT_DIR}/${LL_ARCH_DIR}/include/quicktime
    "${QUICKTIME_SDK_DIR}\\CIncludes"
    )
endif (DARWIN)

mark_as_advanced(QUICKTIME_LIBRARY)

if (QUICKTIME_LIBRARY)
  set(QUICKTIME ON CACHE BOOL "Build with QuickTime streaming media support.")
endif (QUICKTIME_LIBRARY)

```

Fix for DEV-41797 - "LL_QUICKTIME_ENABLED is often unset on Windows builds"
user
```cmake
# -*- cmake -*-

if(INSTALL_PROPRIETARY)
  include(Prebuilt)
  use_prebuilt_binary(quicktime)
endif(INSTALL_PROPRIETARY)

if (DARWIN)
  include(CMakeFindFrameworks)
  find_library(QUICKTIME_LIBRARY QuickTime)
elseif (WINDOWS)
  set(QUICKTIME_SDK_DIR "$ENV{PROGRAMFILES}/QuickTime SDK"
      CACHE PATH "Location of the QuickTime SDK.")

  find_library(DEBUG_QUICKTIME_LIBRARY qtmlclient.lib
               PATHS
               ${ARCH_PREBUILT_DIRS_DEBUG}
               "${QUICKTIME_SDK_DIR}\\libraries"
               )

  find_library(RELEASE_QUICKTIME_LIBRARY qtmlclient.lib
               PATHS
               ${ARCH_PREBUILT_DIRS_RELEASE}
               "${QUICKTIME_SDK_DIR}\\libraries"
               )

  if (DEBUG_QUICKTIME_LIBRARY AND RELEASE_QUICKTIME_LIBRARY)
    set(QUICKTIME_LIBRARY 
        optimized ${RELEASE_QUICKTIME_LIBRARY}
        debug ${DEBUG_QUICKTIME_LIBRARY}
        )
        
  endif (DEBUG_QUICKTIME_LIBRARY AND RELEASE_QUICKTIME_LIBRARY)
  
  include_directories(
    ${LIBS_PREBUILT_DIR}/${LL_ARCH_DIR}/include/quicktime
    "${QUICKTIME_SDK_DIR}\\CIncludes"
    )
endif (DARWIN)

mark_as_advanced(QUICKTIME_LIBRARY)

if (QUICKTIME_LIBRARY)
  set(QUICKTIME ON CACHE BOOL "Build with QuickTime streaming media support.")
endif (QUICKTIME_LIBRARY)

```
assistant