Define and document SHELL_FILE in settings.js

2 files changed, 3 insertions, 1 deletions

diff --git a/src/jsifier.js b/src/jsifier.js
index 456e50cf..92b39b7d 100644
--- a/src/jsifier.js
+++ b/src/jsifier.js
@@ -32,7 +32,7 @@ function JSify(data, functionsOnly, givenFunctions) {
     // else. This lets us not hold any strings in memory, we simply print
     // things out as they are ready.
 
-    var shellFile = (typeof SHELL_FILE !== 'undefined' && SHELL_FILE) ? SHELL_FILE : (BUILD_AS_SHARED_LIB ? 'shell_sharedlib.js' : 'shell.js');
+    var shellFile = SHELL_FILE ? SHELL_FILE : (BUILD_AS_SHARED_LIB ? 'shell_sharedlib.js' : 'shell.js');
     var shellParts = read(shellFile).split('{{BODY}}');
     print(shellParts[0]);
     var preFile = BUILD_AS_SHARED_LIB ? 'preamble_sharedlib.js' : 'preamble.js';
diff --git a/src/settings.js b/src/settings.js
index 76dc25a1..16cc3930 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -198,6 +198,8 @@ var INCLUDE_FULL_LIBRARY = 0; // Whether to include the whole library rather tha
                               // dynamically loading modules that make use of runtime
                               // library functions that are not used in the main module.
 
+var SHELL_FILE = null; // set this to a string to override the shell file used
+
 var SHOW_LABELS = 0; // Show labels in the generated code
 
 var BUILD_AS_SHARED_LIB = 0; // Whether to build the code as a shared library, which