diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0d673d3..6c4dd9b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,6 +33,10 @@ if(HDF5_ROOTDIR)
 endif(HDF5_ROOTDIR)
 include(FindHDF5)
 
+include(FindPkgConfig)
+
+pkg_check_modules(FFTW3 fftw3>=3.3)
+pkg_check_modules(EIGEN3 eigen3)
 
 include(FindPackageHandleStandardArgs)
 set(NETCDF_FIND_REQUIRED TRUE)
diff --git a/sample/CMakeLists.txt b/sample/CMakeLists.txt
index b170c7f..a98ccdd 100644
--- a/sample/CMakeLists.txt
+++ b/sample/CMakeLists.txt
@@ -1,5 +1,5 @@
 SET(tolink CosmoTool ${CosmoTool_LIBS})
-include_directories(${CMAKE_SOURCE_DIR}/src ${NETCDF_INCLUDE_PATH} ${GSL_INCLUDE_PATH})
+include_directories(${CMAKE_SOURCE_DIR}/src ${FFTW3_INCLUDE_DIRS} ${EIGEN3_INCLUDE_DIRS} ${NETCDF_INCLUDE_PATH} ${GSL_INCLUDE_PATH})
 
 add_executable(testBQueue testBQueue.cpp)
 target_link_libraries(testBQueue ${tolink})
@@ -39,3 +39,8 @@ target_link_libraries(testAlgo ${tolink})
 
 add_executable(testBSP testBSP.cpp)
 target_link_libraries(testBSP ${tolink})
+
+if (FFTW3_FOUND AND EIGEN3_FOUND)
+  add_executable(test_fft_calls test_fft_calls)
+  target_link_libraries(test_fft_calls ${tolink} ${FFTW3_LIBRARIES})
+endif (FFTW3_FOUND AND EIGEN3_FOUND)
diff --git a/sample/test_fft_calls.cpp b/sample/test_fft_calls.cpp
new file mode 100644
index 0000000..35eeb12
--- /dev/null
+++ b/sample/test_fft_calls.cpp
@@ -0,0 +1,12 @@
+#include "fourier/euclidian.hpp"
+
+using namespace CosmoTool;
+
+int main()
+{
+  EuclidianFourierTransform_2d<double> dft(128,128,1.0,1.0);
+
+  dft.realSpace().eigen().setRandom();
+  dft.analysis();
+  return 0;
+}