Removed global variable definition in header

src/helpers.c

@@ -9,6 +9,7 @@
 #include <errno.h> // errno
 #include <libgen.h> // dirname 
 
+light_loglevel_t light_loglevel;
 
 bool light_file_read_uint64(char const *filename, uint64_t *val)
 {

src/helpers.h

@@ -21,7 +21,7 @@ typedef enum {
     LIGHT_NOTE_LEVEL
 } light_loglevel_t;
 
-light_loglevel_t light_loglevel;
+extern light_loglevel_t light_loglevel;
 
 #define LIGHT_LOG(lvl, fp, fmt, args...)\
     if(light_loglevel >= lvl)\