diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e6231405b61ac5104e8054afcd9742e6c220f395..668fddbc33fe4b716d8794b58bfc220841f1789f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -34,6 +34,24 @@ build:centos6.6:
   image: centos:6.6
   script:
   - echo "Building on CentOS 6..."
+  - cmake --help
+  - cmake .. -DENABLE_MM=1
+             -DOPEN_MM_LIBRARY=$EBROOTOPENMM/lib/libOpenMM.so
+             -DOPEN_MM_PLUGIN_DIR=$EBROOTOPENMM/lib/plugins
+             -DOPEN_MM_INCLUDE_DIR=$EBROOTOPENMM/include
+             -DCOMPILE_TMTOOLS=1
+             -DENABLE_GFX=OFF
+             -DENABLE_GUI=OFF
+             -DUSE_NUMPY=1
+             -DUSE_RPATH=1
+             -DPYTHON_ROOT=$EBROOTPYTHON
+             -DEIGEN3_INCLUDE_DIR=$EBROOTEIGEN/include
+             -DFFTW_LIBRARY=$EBROOTFFTW/lib/libfftw3f.a
+             -DFFTW_INCLUDE_DIR=$EBROOTFFTW/include
+             -DBOOST_ROOT=$EBROOTBOOST
+             -DQT_QMAKE_EXECUTABLE=$EBROOTQT/bin/qmake
+             -DCOMPOUND_LIB=$COMP_LIB
+             -DOPTIMIZE=1
   - echo "... done building on CentOS 6."
 
 # TESTS STAGE