Added support for exporting (non-function) global variables.

3 files changed, 10 insertions, 1 deletions

diff --git a/src/compiler.js b/src/compiler.js
index e5e8a755..4fe68e88 100644
--- a/src/compiler.js
+++ b/src/compiler.js
@@ -42,6 +42,7 @@ if (SAFE_HEAP >= 2) {
 }
 
 EXPORTED_FUNCTIONS = set(EXPORTED_FUNCTIONS);
+EXPORTED_GLOBALS = set(EXPORTED_GLOBALS);
 
 // Settings sanity checks
 
diff --git a/src/jsifier.js b/src/jsifier.js
index 2344b21f..71797daa 100644
--- a/src/jsifier.js
+++ b/src/jsifier.js
@@ -178,9 +178,13 @@ function JSify(data, functionsOnly, givenFunctions, givenGlobalVariables) {
           }
           constant = makePointer(constant, null, 'ALLOC_STATIC', item.type);
 
+          var js = item.ident + '=' + constant + ';';
+          if (item.ident in EXPORTED_GLOBALS) {
+            js += '\nModule["' + item.ident + '"] = ' + item.ident + ';';
+          }
           return ret.concat({
             intertype: 'GlobalVariable',
-            JS: item.ident + '=' + constant + ';',
+            JS: js,
           });
         }
       }
diff --git a/src/settings.js b/src/settings.js
index f2dd9065..f3ed4d06 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -101,6 +101,10 @@ AUTO_OPTIMIZE = 0; // When run with the CHECK_* options, will not fail on errors
 EXPORTED_FUNCTIONS = ['_main']; // Functions that are explicitly exported, so they are guaranteed to
                                 // be accessible outside of the generated code.
 
+EXPORTED_GLOBALS = []; // Global non-function variables that are explicitly
+                       // exported, so they are guaranteed to be
+                       // accessible outside of the generated code.
+
 SHOW_LABELS = 0; // Show labels in the generated code
 
 // Compiler debugging options