Fixed header include problems.

include/spdlog/details/line_logger_fwd.h

@@ -0,0 +1,78 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+#pragma once
+
+#include <spdlog/common.h>
+#include <spdlog/details/log_msg.h>
+
+#include <string>
+
+// Line logger class - aggregates operator<< calls to fast ostream
+// and logs upon destruction
+
+namespace spdlog
+{
+
+// Forward declaration
+class logger;
+
+namespace details
+{
+class line_logger
+{
+public:
+    line_logger(logger* callback_logger, level::level_enum msg_level, bool enabled);
+
+    // No copy intended. Only move
+    line_logger(const line_logger& other) = delete;
+    line_logger& operator=(const line_logger&) = delete;
+    line_logger& operator=(line_logger&&) = delete;
+
+
+    line_logger(line_logger&& other);
+
+    //Log the log message using the callback logger
+    ~line_logger();
+
+    //
+    // Support for format string with variadic args
+    //
+
+
+    void write(const char* what);
+
+    template <typename... Args>
+    void write(const char* fmt, const Args&... args);
+
+    //
+    // Support for operator<<
+    //
+    line_logger& operator<<(const char* what);
+    line_logger& operator<<(const std::string& what);
+    line_logger& operator<<(int what);
+    line_logger& operator<<(unsigned int what);
+    line_logger& operator<<(long what);
+    line_logger& operator<<(unsigned long what);
+    line_logger& operator<<(long long what);
+    line_logger& operator<<(unsigned long long what);
+    line_logger& operator<<(double what);
+    line_logger& operator<<(long double what);
+    line_logger& operator<<(float what);
+    line_logger& operator<<(char what);
+    //Support user types which implements operator<<
+    template<typename T>
+    line_logger& operator<<(const T& what);
+
+    void disable();
+    bool is_enabled() const;
+
+private:
+    logger* _callback_logger;
+    log_msg _log_msg;
+    bool _enabled;
+};
+} //Namespace details
+} // Namespace spdlog
+