error

perfalytics.c:106:6: warning: no previous prototype for ‘perfalytics_background_worker_main’ [-Wmissing-prototypes]
 void perfalytics_background_worker_main(Datum main_arg) pg_attribute_noreturn();
      ^
perfalytics.c: In function ‘perfalytics_background_worker_main’:
perfalytics.c:106:57: error: expected declaration specifiers before ‘pg_attribute_noreturn’
 void perfalytics_background_worker_main(Datum main_arg) pg_attribute_noreturn();
                                                         ^
perfalytics.c:108:1: error: parameter ‘perfalytics_flush_query’ is initialized
 const char * perfalytics_flush_query =
 ^
perfalytics.c:119:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:317:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:330:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:374:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:417:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:440:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:517:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:536:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:556:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:602:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:618:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:629:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
perfalytics.c:106:6: error: old-style parameter declarations in prototyped function definition
 void perfalytics_background_worker_main(Datum main_arg) pg_attribute_noreturn();
      ^
perfalytics.c:731:1: error: expected ‘{’ at end of input
 }
 ^
perfalytics.c: At top level:
perfalytics.c:42:12: warning: ‘perfalytics_log_min_duration’ defined but not used [-Wunused-variable]
 static int perfalytics_log_min_duration = -1; /* msec or -1 */
            ^
perfalytics.c:43:13: warning: ‘perfalytics_log_analyze’ defined but not used [-Wunused-variable]
 static bool perfalytics_log_analyze = true;
             ^
perfalytics.c:45:13: warning: ‘perfalytics_log_buffers’ defined but not used [-Wunused-variable]
 static bool perfalytics_log_buffers = true;
             ^
perfalytics.c:46:13: warning: ‘perfalytics_log_triggers’ defined but not used [-Wunused-variable]
 static bool perfalytics_log_triggers = false;
             ^
perfalytics.c:47:13: warning: ‘perfalytics_log_timing’ defined but not used [-Wunused-variable]
 static bool perfalytics_log_timing = true;
             ^
perfalytics.c:49:13: warning: ‘perfalytics_log_nested_statements’ defined but not used [-Wunused-variable]
 static bool perfalytics_log_nested_statements = false;
             ^
perfalytics.c:52:15: warning: ‘perfalytics_destination_url’ defined but not used [-Wunused-variable]
 static char * perfalytics_destination_url;
               ^
perfalytics.c:53:15: warning: ‘perfalytics_destination_endpoint’ defined but not used [-Wunused-variable]
 static char * perfalytics_destination_endpoint;
               ^
perfalytics.c:54:13: warning: ‘perfalytics_use_https’ defined but not used [-Wunused-variable]
 static bool perfalytics_use_https = false;
             ^
perfalytics.c:55:12: warning: ‘perfalytics_worker_naptime’ defined but not used [-Wunused-variable]
 static int perfalytics_worker_naptime = 10;
            ^
perfalytics.c:56:15: warning: ‘perfalytics_database’ defined but not used [-Wunused-variable]
 static char * perfalytics_database;
               ^
perfalytics.c:57:15: warning: ‘perfalytics_environment_id’ defined but not used [-Wunused-variable]
 static char * perfalytics_environment_id;
               ^
perfalytics.c:70:12: warning: ‘nesting_level’ defined but not used [-Wunused-variable]
 static int nesting_level = 0;
            ^
perfalytics.c:73:32: warning: ‘prev_ExecutorStart’ defined but not used [-Wunused-variable]
 static ExecutorStart_hook_type prev_ExecutorStart = NULL;
                                ^
perfalytics.c:74:30: warning: ‘prev_ExecutorRun’ defined but not used [-Wunused-variable]
 static ExecutorRun_hook_type prev_ExecutorRun = NULL;
                              ^
perfalytics.c:75:33: warning: ‘prev_ExecutorFinish’ defined but not used [-Wunused-variable]
 static ExecutorFinish_hook_type prev_ExecutorFinish = NULL;
                                 ^
perfalytics.c:76:30: warning: ‘prev_ExecutorEnd’ defined but not used [-Wunused-variable]
 static ExecutorEnd_hook_type prev_ExecutorEnd = NULL;
GCC(1)                                                                                 GNU                                                                                GCC(1)
                              ^
perfalytics.c:89:13: warning: ‘explain_ExecutorStart’ declared ‘static’ but never defined [-Wunused-function]
 static void explain_ExecutorStart(QueryDesc *queryDesc, int eflags);
             ^
perfalytics.c:92:13: warning: ‘explain_ExecutorRun’ declared ‘static’ but never defined [-Wunused-function]
 static void explain_ExecutorRun(QueryDesc *queryDesc, ScanDirection direction, row_count_t count);
             ^
perfalytics.c:97:13: warning: ‘explain_ExecutorFinish’ declared ‘static’ but never defined [-Wunused-function]
 static void explain_ExecutorFinish(QueryDesc *queryDesc);
             ^
perfalytics.c:98:13: warning: ‘explain_ExecutorEnd’ declared ‘static’ but never defined [-Wunused-function]
 static void explain_ExecutorEnd(QueryDesc *queryDesc);
             ^
perfalytics.c:100:23: warning: ‘perfalytics_explain_state’ declared ‘static’ but never defined [-Wunused-function]
 static ExplainState * perfalytics_explain_state(QueryDesc *queryDesc, int explainFormat, bool log_verbose);
                       ^
perfalytics.c:101:23: warning: ‘non_analyze_explain_state’ declared ‘static’ but never defined [-Wunused-function]
 static ExplainState * non_analyze_explain_state(void);
                       ^
perfalytics.c:102:14: warning: ‘query_to_explain_text’ declared ‘static’ but never defined [-Wunused-function]
 static Datum query_to_explain_text(QueryDesc *queryDesc, ExplainState *es);
              ^
perfalytics.c:104:13: warning: ‘perfalytics_sighup_handler’ declared ‘static’ but never defined [-Wunused-function]
 static void perfalytics_sighup_handler(SIGNAL_ARGS);
             ^
perfalytics.c:105:13: warning: ‘perfalytics_sigterm_handler’ declared ‘static’ but never defined [-Wunused-function]
 static void perfalytics_sigterm_handler(SIGNAL_ARGS);
             ^
make: *** [perfalytics.o] Error 1