show cpu info.

@@ -225,6 +225,21 @@ void check_macro_features()
 #if defined(SRS_PERF_SO_SNDBUF_SIZE) && !defined(SRS_PERF_MW_SO_SNDBUF)
     #error "SRS_PERF_SO_SNDBUF_SIZE depends on SRS_PERF_MW_SO_SNDBUF"
 #endif
+    
+#ifndef SRS_OSX
+    #if defined(__amd64__)
+        srs_trace("cpu is amd64, glibc %d.%d", (int)__GLIBC__, (int)__GLIBC_MINOR__);
+    #endif
+    #if defined(__x86_64__)
+        srs_trace("cpu is x86_64, glibc %d.%d", (int)__GLIBC__, (int)__GLIBC_MINOR__);
+    #endif
+    #if defined(__i386__)
+        srs_trace("cpu is i386, glibc %d.%d", (int)__GLIBC__, (int)__GLIBC_MINOR__);
+    #endif
+    #if defined(__arm__)
+        srs_trace("cpu is arm, glibc %d.%d", (int)__GLIBC__, (int)__GLIBC_MINOR__);
+    #endif
+#endif
 }
 
 /**