Merge remote-tracking branch 'origin/master' into license

Author: kripken

src/jsifier.js

@@ -171,9 +171,6 @@ function JSify(data, functionsOnly) {
           var msg = 'undefined symbol: ' + ident;
           if (ERROR_ON_UNDEFINED_SYMBOLS) {
             error(msg);
-            if (WASM_BACKEND && !LLD_REPORT_UNDEFINED) {
-              warnOnce('Link with `-s LLD_REPORT_UNDEFINED` to get more information on undefined symbols');
-            }
             warnOnce('To disable errors for undefined symbols use `-s ERROR_ON_UNDEFINED_SYMBOLS=0`')
             warnOnce(finalName + ' may need to be added to EXPORTED_FUNCTIONS if it arrives from a system library')
           } else if (VERBOSE || WARN_ON_UNDEFINED_SYMBOLS) {

src/settings.js

@@ -1759,6 +1759,8 @@ var USE_OFFSET_CONVERTER = 0;
 // report undefined symbols within the binary.  Without this option that linker
 // doesn't know which symmbols might be defined JS and so reporting of undefined
 // symbols is deleyed until the JS compiler is run.
+// There are some known issues with this flag.  e.g. EM_JS function:
+// https://github.com/emscripten-core/emscripten/issues/10779
 // [link]
 var LLD_REPORT_UNDEFINED = 0;