CDRIVER-2261 Examples require C++ linker

Author: bjori

CMakeLists.txt

@@ -29,17 +29,19 @@ option(ENABLE_MAINTAINER_FLAGS "Use strict compiler checks" OFF)
 option(ENABLE_AUTOMATIC_INIT_AND_CLEANUP "Enable automatic init and cleanup (GCC only)" ON)
 option(ENABLE_CRYPTO_SYSTEM_PROFILE "Use system crypto profile (OpenSSL only)" OFF)
 option(ENABLE_TRACING "Turn on verbose debug output" OFF)
-set(ENABLE_SNAPPY bundled CACHE STRING "Enable snappy support")
+set(ENABLE_SNAPPY AUTO CACHE STRING "Enable snappy support")
 set(ENABLE_ZLIB bundled CACHE STRING "Enable zlib support")
 
 if (NOT WIN32)
     message(WARNING "CMake support is experimental and may not produce production quality artifacts")
 endif ()
 
-if (ENABLE_SNAPPY STREQUAL "bundled")
-project (libmongoc C CXX)
+if (WIN32 AND ENABLE_SNAPPY STREQUAL "AUTO")
+   project (libmongoc C CXX)
+   set (ENABLE_SNAPPY "bundled")
 else ()
-project (libmongoc C)
+   project (libmongoc C)
+   set (ENABLE_SNAPPY "")
 endif ()
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/build/cmake)
@@ -688,10 +690,6 @@ function(mongoc_add_example example use_shared)
          target_link_libraries(${example} shlwapi)
       endif()
       set (EXAMPLES ${EXAMPLES} ${example})
-      if (ENABLE_SNAPPY STREQUAL "bundled")
-         set_target_properties(${example} PROPERTIES LINKER_LANGUAGE CXX)
-         set_target_properties(${example} PROPERTIES LINKER_LANGUAGE CXX)
-      endif ()
    endif ()
 endfunction()