remove forced installation of dependencies for windows

Author: lalitb

CMakeLists.txt

@@ -31,9 +31,10 @@ if(VCPKG_CHAINLOAD_TOOLCHAIN_FILE)
   include("${VCPKG_CHAINLOAD_TOOLCHAIN_FILE}")
 endif()
 
+option(INSTALL_WIN32_DEPEDENCIES "Whether to install Windows dependencies using vcpkg" OFF)
 if (DEFINED CMAKE_TOOLCHAIN_FILE AND WIN32)
   find_package(GTest)
-  if(NOT (GTEST_FOUND OR GTest_FOUND))
+  if (INSTALL_WIN32_DEPEDENCIES AND NOT (GTEST_FOUND OR GTest_FOUND))
     install_windows_deps()
   endif()
   find_package(GTest REQUIRED)