Added command line option --version.

src/nxt_main.c

@@ -24,14 +24,14 @@ main(int argc, char **argv)
 
     nxt_main_log.handler = nxt_log_time_handler;
 
-    nxt_log(&nxt_main_task, NXT_LOG_INFO, "nginext started");
-
     ret = nxt_runtime_create(&nxt_main_task);
 
     if (ret != NXT_OK) {
         return 1;
     }
 
+    nxt_log(&nxt_main_task, NXT_LOG_INFO, "nginext started");
+
     nxt_event_engine_start(nxt_main_task.thread->engine);
 
     nxt_unreachable();

src/nxt_main.h

@@ -10,6 +10,10 @@
 
 #include <nxt_auto_config.h>
 
+
+#define NXT_VERSION                  "0.1"
+
+
 typedef struct nxt_port_s            nxt_port_t;
 typedef struct nxt_task_s            nxt_task_t;
 typedef struct nxt_port_recv_msg_s   nxt_port_recv_msg_t;

src/nxt_runtime.c

@@ -133,6 +133,10 @@ nxt_runtime_create(nxt_task_t *task)
 
     rt->start = nxt_runtime_initial_start;
 
+    if (nxt_runtime_conf_init(task, rt) != NXT_OK) {
+        goto fail;
+    }
+
     nxt_work_queue_add(&task->thread->engine->fast_work_queue,
                        nxt_runtime_start, task, rt, NULL);
 
@@ -346,10 +350,6 @@ nxt_runtime_start(nxt_task_t *task, void *obj, void *data)
     task->thread->log->ctx_handler = NULL;
     task->thread->log->ctx = NULL;
 
-    if (nxt_runtime_conf_init(task, rt) != NXT_OK) {
-        goto fail;
-    }
-
     if (nxt_runtime_log_files_create(task, rt) != NXT_OK) {
         goto fail;
     }
@@ -797,6 +797,10 @@ nxt_runtime_conf_read_cmd(nxt_task_t *task, nxt_runtime_t *rt)
     nxt_str_t       addr;
     nxt_sockaddr_t  *sa;
 
+    const static char  version[] =
+        "nginext version: " NXT_VERSION "\n"
+        "configured as ./configure" NXT_CONFIGURE_OPTIONS "\n";
+
     argv = nxt_process_argv;
 
     while (*argv != NULL) {
@@ -900,6 +904,11 @@ nxt_runtime_conf_read_cmd(nxt_task_t *task, nxt_runtime_t *rt)
             rt->daemon = 0;
             continue;
         }
+
+        if (nxt_strcmp(p, "--version") == 0) {
+            write(STDERR_FILENO, version, sizeof(version) - 1);
+            exit(0);
+        }
     }
 
     return NXT_OK;