Fixed Cmake under windows and disable bench build from default config

CMakeLists.txt

@@ -31,10 +31,12 @@ else()
 endif()
 endif ()
 
-option(BUILD_SHARED_LIBS "Build as shared library" OFF)
+if(NOT WIN32) #spdlog does not yet contain __declspec( dllexport ) under windows.
+	option(BUILD_SHARED_LIBS "Build as shared library" OFF)
+endif()
 option(SPDLOG_FMT_EXTERNAL "Use external fmt library instead of bundled" OFF)
 option(SPDLOG_BUILD_EXAMPLES "Build examples" ${SPDLOG_MASTER_PROJECT})
-option(SPDLOG_BUILD_BENCH "Build benchmarks (Requires https://github.com/google/benchmark.git to be installed)" ${SPDLOG_MASTER_PROJECT})
+option(SPDLOG_BUILD_BENCH "Build benchmarks (Requires https://github.com/google/benchmark.git to be installed)" OFF)
 option(SPDLOG_BUILD_TESTS "Build tests" ${SPDLOG_MASTER_PROJECT})
 option(SPDLOG_INSTALL "Generate the install target." ${SPDLOG_MASTER_PROJECT})
 option(CMAKE_EXPORT_NO_PACKAGE_REGISTRY "Disable registration of CMake's build directory." ON)