Asan: Refine asan warning message for macOS.

trunk/auto/auto_headers.sh

@@ -149,6 +149,11 @@ if [[ $SRS_GPERF_CP == YES ]]; then
 else
     srs_undefine_macro "SRS_GPERF_CP" $SRS_AUTO_HEADERS_H
 fi
+if [ $SRS_SANITIZER == YES ]; then
+    srs_define_macro "SRS_SANITIZER" $SRS_AUTO_HEADERS_H
+else
+    srs_undefine_macro "SRS_SANITIZER" $SRS_AUTO_HEADERS_H
+fi
 if [ $SRS_SANITIZER_LOG == YES ]; then
     srs_define_macro "SRS_SANITIZER_LOG" $SRS_AUTO_HEADERS_H
 else

trunk/configure

@@ -586,6 +586,7 @@ ffmpeg:
 
 END
 
+# Generate Makefile entry for srs-server.
 cat << END >> ${SRS_MAKEFILE}
 server: _prepare_dir
 	@echo "Build the SRS server, JOBS=\${JOBS}, FORCE_MAKE_JOBS=${SRS_FORCE_MAKE_JOBS}"
@@ -593,6 +594,7 @@ server: _prepare_dir
 	@bash objs/_srs_build_summary.sh
 
 END
+
 # generate all modules entry
 for SRS_MODULE in ${SRS_MODULES[*]}; do
     . $SRS_WORKDIR/auto/reset_module.sh && . $SRS_MODULE/config

trunk/src/main/srs_main_server.cpp

@@ -96,6 +96,13 @@ srs_error_t do_main(int argc, char** argv, char** envp)
     // TODO: Might fail if change working directory.
     _srs_binary = argv[0];
 
+    // For sanitizer on macOS, to avoid the warning on startup.
+#if defined(SRS_OSX) && defined(SRS_SANITIZER)
+    if (!getenv("MallocNanoZone")) {
+        fprintf(stderr, "Asan: Please setup the env MallocNanoZone=0 to disable the warning, see https://stackoverflow.com/a/70209891/17679565\n");
+    }
+#endif
+
     // Initialize global and thread-local variables.
     if ((err = srs_global_initialize()) != srs_success) {
         return srs_error_wrap(err, "global init");