main.cpp.diff

diff --git a/source/Engine/main.cpp b/source/Engine/main.cpp
index 10c8101..d7ec2e4 100644
--- a/source/Engine/main.cpp
+++ b/source/Engine/main.cpp
@@ -298,7 +298,12 @@ int main(int argc, char *argv[]) try
 #ifdef __APPLE__
        // bundleFolder is set in applicationDidFinishLaunching.
 #elif defined __unix__
-       bundleFolder = copyString(DATADIR);     // DATADIR is defined in the Makefile.
+       bundleFolder = getenv("SLUDGE_DATADIR");
+       if (bundleFolder == NULL)
+       {
+               bundleFolder = copyString(DATADIR);     // DATADIR is defined in the Makefile. 
+               fprintf(stderr, "SLUDGE_DATADIR not found, defaulting to %s\n", bundleFolder);
+       }
 #else
        bundleFolder = copyString(argv[0]);
        int lastSlash = -1;