From 4d6b962ba47ca2a6445bebd144b8122f3b8e96b7 Mon Sep 17 00:00:00 2001
From: Mark Borgerding <mark@borgerding.net>
Date: Wed, 10 Jun 2009 22:16:32 -0400
Subject: added FindFFTW, but I don't think it's right yet

---
 cmake/FindFFTW.cmake            | 24 ++++++++++++++++++++++++
 unsupported/test/CMakeLists.txt |  6 ++++++
 unsupported/test/FFT.cpp        | 12 +++---------
 3 files changed, 33 insertions(+), 9 deletions(-)
 create mode 100644 cmake/FindFFTW.cmake

diff --git a/cmake/FindFFTW.cmake b/cmake/FindFFTW.cmake
new file mode 100644
index 000000000..a56450b17
--- /dev/null
+++ b/cmake/FindFFTW.cmake
@@ -0,0 +1,24 @@
+
+if (FFTW_INCLUDES AND FFTW_LIBRARIES)
+  set(FFTW_FIND_QUIETLY TRUE)
+endif (FFTW_INCLUDES AND FFTW_LIBRARIES)
+
+find_path(FFTW_INCLUDES
+  NAMES
+  fftw3.h
+  PATHS
+  $ENV{FFTWDIR}
+  ${INCLUDE_INSTALL_DIR}
+)
+
+find_library(FFTWF_LIB NAMES fftw3f PATHS $ENV{FFTWDIR} ${LIB_INSTALL_DIR})
+find_library(FFTW_LIB NAMES fftw3 PATHS $ENV{FFTWDIR} ${LIB_INSTALL_DIR})
+find_library(FFTWL_LIB NAMES fftw3l  PATHS $ENV{FFTWDIR} ${LIB_INSTALL_DIR})
+set(FFTW_LIBRARIES "${FFTWF_LIB} ${FFTW_LIB} ${FFTWL_LIB}" )
+message(STATUS "FFTW ${FFTW_LIBRARIES}" )
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(FFTW DEFAULT_MSG
+                                  FFTW_INCLUDES FFTW_LIBRARIES)
+
+mark_as_advanced(FFTW_INCLUDES FFTW_LIBRARIES)
diff --git a/unsupported/test/CMakeLists.txt b/unsupported/test/CMakeLists.txt
index 49de7dfb2..23217811f 100644
--- a/unsupported/test/CMakeLists.txt
+++ b/unsupported/test/CMakeLists.txt
@@ -20,3 +20,9 @@ ei_add_test(BVH)
 ei_add_test(matrixExponential)
 ei_add_test(alignedvector3)
 ei_add_test(FFT)
+
+find_package(FFTW)
+if(FFTW_FOUND)
+  ei_add_test(FFTW  " " "${FFTW_LIBRARIES}" )
+endif(FFTW_FOUND)
+
diff --git a/unsupported/test/FFT.cpp b/unsupported/test/FFT.cpp
index 28230e1c4..f0b9b68bf 100644
--- a/unsupported/test/FFT.cpp
+++ b/unsupported/test/FFT.cpp
@@ -23,11 +23,6 @@
 // Eigen. If not, see <http://www.gnu.org/licenses/>.
 
 #include "main.h"
-//#define USE_FFTW
-#ifdef USE_FFTW
-#include <fftw3.h>
-#endif
-
 #include <unsupported/Eigen/FFT>
 
 using namespace std;
@@ -121,7 +116,7 @@ void test_complex(int nfft)
 
 void test_FFT()
 {
-#if 1
+
   CALL_SUBTEST( test_complex<float>(32) ); CALL_SUBTEST( test_complex<double>(32) ); CALL_SUBTEST( test_complex<long double>(32) );
   CALL_SUBTEST( test_complex<float>(256) ); CALL_SUBTEST( test_complex<double>(256) ); CALL_SUBTEST( test_complex<long double>(256) );
   CALL_SUBTEST( test_complex<float>(3*8) ); CALL_SUBTEST( test_complex<double>(3*8) ); CALL_SUBTEST( test_complex<long double>(3*8) );
@@ -129,13 +124,12 @@ void test_FFT()
   CALL_SUBTEST( test_complex<float>(2*3*4) ); CALL_SUBTEST( test_complex<double>(2*3*4) ); CALL_SUBTEST( test_complex<long double>(2*3*4) );
   CALL_SUBTEST( test_complex<float>(2*3*4*5) ); CALL_SUBTEST( test_complex<double>(2*3*4*5) ); CALL_SUBTEST( test_complex<long double>(2*3*4*5) );
   CALL_SUBTEST( test_complex<float>(2*3*4*5*7) ); CALL_SUBTEST( test_complex<double>(2*3*4*5*7) ); CALL_SUBTEST( test_complex<long double>(2*3*4*5*7) );
-#endif
 
-#if 1
+
+
   CALL_SUBTEST( test_scalar<float>(32) ); CALL_SUBTEST( test_scalar<double>(32) ); CALL_SUBTEST( test_scalar<long double>(32) );
   CALL_SUBTEST( test_scalar<float>(45) ); CALL_SUBTEST( test_scalar<double>(45) ); CALL_SUBTEST( test_scalar<long double>(45) );
   CALL_SUBTEST( test_scalar<float>(50) ); CALL_SUBTEST( test_scalar<double>(50) ); CALL_SUBTEST( test_scalar<long double>(50) );
   CALL_SUBTEST( test_scalar<float>(256) ); CALL_SUBTEST( test_scalar<double>(256) ); CALL_SUBTEST( test_scalar<long double>(256) );
   CALL_SUBTEST( test_scalar<float>(2*3*4*5*7) ); CALL_SUBTEST( test_scalar<double>(2*3*4*5*7) ); CALL_SUBTEST( test_scalar<long double>(2*3*4*5*7) );
-#endif
 }
-- 
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