diff --git a/build_FEM.sh b/build_FEM.sh
new file mode 100644
index 000000000..e69de29bb
diff --git a/build_marc.sh b/build_marc.sh
new file mode 100644
index 000000000..e69de29bb
diff --git a/build_spectral.sh b/build_spectral.sh
index 1f8f8473f..b21e633eb 100755
--- a/build_spectral.sh
+++ b/build_spectral.sh
@@ -2,16 +2,31 @@
 
 cat  README
 echo "Building spectral solver with ${FC}"
+DAMASKVERSION :=$(shell cat ../VERSION)
 
 # prepare building directory
-if [ ! -d build_spectral ] ; then
-    mkdir build_spectral
+if [ -d build_spectral ] ; then
+    rm -rf build_spectral
 fi
+mkdir build_spectral
 cd build_spectral
 
-# start building
-cmake -D PETSC_DIR=${PETSC_DIR} \
-      -D HDF5=${HDF5} \
+##
+# CMake call
+# PETSC_DIR         |  PETSC directory
+# HDF5_DIR          |  HDF5 library (same compiler for DAMASK)
+# DAMASK_ROOT       |  DAMASK source location
+# DAMASK_V          |  DAMASK current revision
+# CMAKE_BUILD_TYPE  |  Default set to release (no debugging output)
+# OPENMP            |  "ON" will turn on OPENMP support
+# OPTIMIZATION      |  [OFF,DEFENSIVE,AGGRESSIVE,ULTRA]
+cmake -D PETSC_DIR=${PETSC_DIR}    \
+      -D HDF5_DIR=${HDF5_DIR}      \
+      -D DAMASK_ROOT=..            \
+      -D DAMASK_V=${DAMASKVERSION} \
+      -D CMAKE_BUILD_TYPE=RELEASE  \
+      -D OPENMP=ON                 \
+      -D OPTIMIZATION=DEFENSIVE    \
       ..
 
 # instruction for compiling