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diff --git a/ntsimulator/ntsim-ng/utils/log_utils.h b/ntsimulator/ntsim-ng/utils/log_utils.h
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+++ b/ntsimulator/ntsim-ng/utils/log_utils.h
@@ -0,0 +1,51 @@
+/*************************************************************************
+*
+* Copyright 2020 highstreet technologies GmbH and others
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+***************************************************************************/
+
+#pragma once
+
+#include <string.h>
+#include <stdint.h>
+
+#define LOG_COLOR_RESET         "\033[0m"
+#define LOG_COLOR_RED           "\033[0;31m"
+#define LOG_COLOR_BOLD_RED      "\033[1;31m"
+#define LOG_COLOR_GREEN         "\033[0;32m"
+#define LOG_COLOR_BOLD_GREEN    "\033[1;32m"
+#define LOG_COLOR_YELLOW        "\033[0;33m"
+#define LOG_COLOR_BOLD_YELLOW   "\033[01;33m"
+#define LOG_COLOR_BLUE          "\033[0;34m"
+#define LOG_COLOR_BOLD_BLUE     "\033[1;34m"
+#define LOG_COLOR_MAGENTA       "\033[0;35m"
+#define LOG_COLOR_BOLD_MAGENTA  "\033[1;35m"
+#define LOG_COLOR_CYAN          "\033[0;36m"
+#define LOG_COLOR_BOLD_CYAN     "\033[1;36m"
+
+#define NTS_ERR_OK				(0)
+#define NTS_ERR_FAILED 			(-1)
+
+void log_init(const char *logfilename);
+void log_message(const int verbose_level, const char *format, ...);
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wvariadic-macros"
+#define log_message(verbose_level, format, args...)  log__message(__FILE__, (uint32_t)__LINE__, verbose_level, format, ## args);
+#define log_error(format, args...)  log__error(__func__, (uint32_t)__LINE__, format, ## args);
+#pragma GCC diagnostic pop
+void log_close(void);
+
+//use log_error instead
+void log__error(char const * const function, uint32_t location, const char *format, ...);
+void log__message(char const * const filename, uint32_t location, const int verbose_level, const char *format, ...);