added custom define for macro `__FILE_NAME__` for non supporting compilers

src/sys/log.h

@@ -3,6 +3,7 @@
 
 #include <stdio.h>
 #include <sys/cdefs.h>
+#include <string.h>
 
 #define LOG_DEFAULT_STREAM stderr
 
@@ -20,6 +21,16 @@
 #define LOG_STRING_INFORMATION "Information"
 #define LOG_STRING_DEBUG       "Debug"
 
+// define __FILE_NAME__ macro if not defined
+// generally not defined by GCC < 11.3 and MSVC
+#ifndef __FILE_NAME__
+#if defined(_WIN32) || defined(_WIN64) || defined(_MSC_VER)
+#define __FILE_NAME__ (strrstr(__FILE__, "\\\\") ? strrstr(__FILE__, "\\\\") + 1 : __FILE__)
+#else
+#define __FILE_NAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
+#endif
+#endif
+
 /**
  * @brief Panic is used in cases where the process is in an unrecoverable state.
  *        This macro will print debug information to stderr and call abort() to