update and change how we build with spdlog

third_party/spdlog/src/file_sinks.cpp

@@ -0,0 +1,18 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#ifndef SPDLOG_COMPILED_LIB
+#error Please define SPDLOG_COMPILED_LIB to compile this file.
+#endif
+
+#include <mutex>
+#include "spdlog/details/null_mutex.h"
+#include "spdlog/details/file_helper-inl.h"
+#include "spdlog/sinks/basic_file_sink-inl.h"
+
+template class spdlog::sinks::basic_file_sink<std::mutex>;
+template class spdlog::sinks::basic_file_sink<spdlog::details::null_mutex>;
+
+#include "spdlog/sinks/rotating_file_sink-inl.h"
+template class spdlog::sinks::rotating_file_sink<std::mutex>;
+template class spdlog::sinks::rotating_file_sink<spdlog::details::null_mutex>;