diff --git a/src/Makefile b/src/Makefile
index b61e5c855..9f50169ff 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -15,13 +15,13 @@ include OBJECTS
 # User Options
 #===============================================================================
 
-COMPILER = intel
+COMPILER = gnu 
 DEBUG    = no
 PROFILE  = no
-OPTIMIZE = yes
-MPI      = yes
-HDF5     = yes
-PETSC    = yes
+OPTIMIZE = no
+MPI      = no
+HDF5     = no
+PETSC    = no
 
 #===============================================================================
 # External Library Paths