diff --git a/modules/find/FindBLAS.cmake b/modules/find/FindBLAS.cmake
index 2d0093a198408193417f7e6a1634edafc2dd536a..b78d83901c0b8236b31f6fb2655f7923a456bae9 100644
--- a/modules/find/FindBLAS.cmake
+++ b/modules/find/FindBLAS.cmake
@@ -3,7 +3,7 @@
 # @copyright (c) 2009-2014 The University of Tennessee and The University
 #                          of Tennessee Research Foundation.
 #                          All rights reserved.
-# @copyright (c) 2012-2016 Inria. All rights reserved.
+# @copyright (c) 2012-2018 Inria. All rights reserved.
 # @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
 #
 ###
@@ -479,11 +479,13 @@ if (BLA_VENDOR MATCHES "Intel*" OR BLA_VENDOR STREQUAL "All")
       endif()
       set(BLAS_COMPILER_FLAGS "")
       if (NOT BLA_VENDOR STREQUAL "Intel10_64lp_seq")
-        if (CMAKE_C_COMPILER_ID STREQUAL "Intel")
-          list(APPEND BLAS_COMPILER_FLAGS "-openmp")
+        if(BLAS_FIND_REQUIRED)
+          find_package(OpenMP REQUIRED)
+        else()
+          find_package(OpenMP)
         endif()
-        if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
-          list(APPEND BLAS_COMPILER_FLAGS "-fopenmp")
+        if(OPENMP_C_FLAGS)
+          list(APPEND BLAS_COMPILER_FLAGS "${OPENMP_C_FLAGS}")
         endif()
       endif()
       if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
diff --git a/modules/find/FindFFTW.cmake b/modules/find/FindFFTW.cmake
index 14fbb7d2b94c17ce06ae5747f11642730c6ffdde..73778afadcc901f592a8eee38b49edee8deb207e 100644
--- a/modules/find/FindFFTW.cmake
+++ b/modules/find/FindFFTW.cmake
@@ -3,7 +3,7 @@
 # @copyright (c) 2009-2014 The University of Tennessee and The University
 #                          of Tennessee Research Foundation.
 #                          All rights reserved.
-# @copyright (c) 2012-2015 Inria. All rights reserved.
+# @copyright (c) 2012-2018 Inria. All rights reserved.
 # @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
 #
 ###
@@ -113,38 +113,38 @@ if( FFTW_FIND_COMPONENTS )
       # means we look for the Intel MKL version of FFTW
       set(FFTW_LOOK_FOR_MKL ON)
       if (FFTW_LOOK_FOR_FFTW_LONG)
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(WARNING "Looking for FFTW -- long precision functions do not exist in MKL FFTW")
-	endif()
-	set(FFTW_LOOK_FOR_FFTW_LONG OFF)
+        if (NOT FFTW_FIND_QUIETLY)
+          message(WARNING "Looking for FFTW -- long precision functions do not exist in MKL FFTW")
+        endif()
+        set(FFTW_LOOK_FOR_FFTW_LONG OFF)
       endif()
       if (FFTW_LOOK_FOR_FFTW_QUAD)
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(WARNING "Looking for FFTW -- quadruple functions do not exist in MKL FFTW")
-	endif()
-	set(FFTW_LOOK_FOR_FFTW_QUAD OFF)
+        if (NOT FFTW_FIND_QUIETLY)
+          message(WARNING "Looking for FFTW -- quadruple functions do not exist in MKL FFTW")
+        endif()
+        set(FFTW_LOOK_FOR_FFTW_QUAD OFF)
       endif()
     endif()
     if (${component} STREQUAL "ESSL")
       # means we look for the Intel MKL version of FFTW
       set(FFTW_LOOK_FOR_ESSL ON)
       if (FFTW_LOOK_FOR_FFTW_LONG)
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(WARNING "Looking for FFTW -- long precision functions do not exist in FFTW_ESSL")
-	endif()
-	set(FFTW_LOOK_FOR_FFTW_LONG OFF)
+        if (NOT FFTW_FIND_QUIETLY)
+          message(WARNING "Looking for FFTW -- long precision functions do not exist in FFTW_ESSL")
+        endif()
+        set(FFTW_LOOK_FOR_FFTW_LONG OFF)
       endif()
       if (FFTW_LOOK_FOR_FFTW_QUAD)
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(WARNING "Looking for FFTW -- quadruple functions do not exist in FFTW_ESSL")
-	endif()
-	set(FFTW_LOOK_FOR_FFTW_QUAD OFF)
+        if (NOT FFTW_FIND_QUIETLY)
+          message(WARNING "Looking for FFTW -- quadruple functions do not exist in FFTW_ESSL")
+        endif()
+        set(FFTW_LOOK_FOR_FFTW_QUAD OFF)
       endif()
       if (FFTW_LOOK_FOR_OMP)
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(WARNING "Looking for FFTW -- FFTW_ESSL does not use OpenMP")
-	endif()
-	set(FFTW_LOOK_FOR_OMP OFF)
+        if (NOT FFTW_FIND_QUIETLY)
+          message(WARNING "Looking for FFTW -- FFTW_ESSL does not use OpenMP")
+        endif()
+        set(FFTW_LOOK_FOR_OMP OFF)
       endif()
     endif()
   endforeach()
@@ -231,90 +231,90 @@ if (NOT FFTW_LOOK_FOR_MKL AND NOT FFTW_LOOK_FOR_ESSL)
       pkg_search_module(FFTW3 fftw3)
       if (FFTW3F_FOUND)
         set(FFTW_C_FLAGS "${FFTW3F_CFLAGS_OTHER}")
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(STATUS "Looking for FFTW3F - found using PkgConfig")
-	endif()
-	if (FFTW3F_LIBRARIES)
-	  list(APPEND FFTW_LIBRARIES "${FFTW3F_LIBRARIES}")
-	endif()
-	if(FFTW3F_INCLUDE_DIRS)
-	  list(APPEND FFTW_INCLUDE_DIRS "${FFTW3F_INCLUDE_DIRS}")
-	else()
-	  if (NOT FFTW_FIND_QUIETLY)
-	    message(WARNING "FFTW3F_INCLUDE_DIRS is empty using PkgConfig."
-	      "Perhaps the path to fftw3f headers is already present in your"
-	      "CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
-	  endif()
-	endif()
-	if(FFTW3F_LIBRARY_DIRS)
-	  list(APPEND FFTW_LIBRARY_DIRS "${FFTW3F_LIBRARY_DIRS}")
-	endif()
+        if (NOT FFTW_FIND_QUIETLY)
+          message(STATUS "Looking for FFTW3F - found using PkgConfig")
+        endif()
+        if (FFTW3F_LIBRARIES)
+          list(APPEND FFTW_LIBRARIES "${FFTW3F_LIBRARIES}")
+        endif()
+        if(FFTW3F_INCLUDE_DIRS)
+          list(APPEND FFTW_INCLUDE_DIRS "${FFTW3F_INCLUDE_DIRS}")
+        else()
+          if (NOT FFTW_FIND_QUIETLY)
+            message(WARNING "FFTW3F_INCLUDE_DIRS is empty using PkgConfig."
+              "Perhaps the path to fftw3f headers is already present in your"
+              "CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
+          endif()
+        endif()
+        if(FFTW3F_LIBRARY_DIRS)
+          list(APPEND FFTW_LIBRARY_DIRS "${FFTW3F_LIBRARY_DIRS}")
+        endif()
       else(FFTW3F_FOUND)
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(STATUS "Looking for FFTW3F - not found using PkgConfig."
-	    "\n   Perhaps you should add the directory containing fftw3f.pc to"
-	    "\n   the PKG_CONFIG_PATH environment variable.")
-	endif()
+        if (NOT FFTW_FIND_QUIETLY)
+          message(STATUS "Looking for FFTW3F - not found using PkgConfig."
+            "\n   Perhaps you should add the directory containing fftw3f.pc to"
+            "\n   the PKG_CONFIG_PATH environment variable.")
+        endif()
       endif(FFTW3F_FOUND)
     elseif(FFTW_LOOK_FOR_FFTW_LONG)
       pkg_search_module(FFTW3L fftw3l)
       pkg_search_module(FFTW3 fftw3)
       if (FFTW3L_FOUND)
        set(FFTW_C_FLAGS "${FFTW3L_CFLAGS_OTHER}")
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(STATUS "Looking for FFTW3L - found using PkgConfig")
-	endif()
-	if (FFTW3L_LIBRARIES)
-	  list(APPEND FFTW_LIBRARIES "${FFTW3L_LIBRARIES}")
-	endif()
-	if(FFTW3L_INCLUDE_DIRS)
-	  list(APPEND FFTW_INCLUDE_DIRS "${FFTW3L_INCLUDE_DIRS}")
-	else()
-	  if (NOT FFTW_FIND_QUIETLY)
-	    message(WARNING "FFTW3L_INCLUDE_DIRS is empty using PkgConfig."
-	      "Perhaps the path to fftw3l headers is already present in your"
-	      "CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
-	  endif()
-	endif()
-	if(FFTW3L_LIBRARY_DIRS)
-	  list(APPEND FFTW_LIBRARY_DIRS "${FFTW3L_LIBRARY_DIRS}")
-	endif()
+        if (NOT FFTW_FIND_QUIETLY)
+          message(STATUS "Looking for FFTW3L - found using PkgConfig")
+        endif()
+        if (FFTW3L_LIBRARIES)
+          list(APPEND FFTW_LIBRARIES "${FFTW3L_LIBRARIES}")
+        endif()
+        if(FFTW3L_INCLUDE_DIRS)
+          list(APPEND FFTW_INCLUDE_DIRS "${FFTW3L_INCLUDE_DIRS}")
+        else()
+          if (NOT FFTW_FIND_QUIETLY)
+            message(WARNING "FFTW3L_INCLUDE_DIRS is empty using PkgConfig."
+              "Perhaps the path to fftw3l headers is already present in your"
+              "CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
+          endif()
+        endif()
+        if(FFTW3L_LIBRARY_DIRS)
+          list(APPEND FFTW_LIBRARY_DIRS "${FFTW3L_LIBRARY_DIRS}")
+        endif()
       else(FFTW3L_FOUND)
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(STATUS "Looking for FFTW3L - not found using PkgConfig."
-	    "\n   Perhaps you should add the directory containing fftw3l.pc to"
-	    "\n   the PKG_CONFIG_PATH environment variable.")
-	endif()
+        if (NOT FFTW_FIND_QUIETLY)
+          message(STATUS "Looking for FFTW3L - not found using PkgConfig."
+            "\n   Perhaps you should add the directory containing fftw3l.pc to"
+            "\n   the PKG_CONFIG_PATH environment variable.")
+        endif()
       endif(FFTW3L_FOUND)
     elseif(FFTW_LOOK_FOR_FFTW_QUAD)
       pkg_search_module(FFTW3Q fftw3q)
       pkg_search_module(FFTW3 fftw3)
       if (FFTW3Q_FOUND)
         set(FFTW_C_FLAGS "${FFTW3Q_CFLAGS_OTHER}")
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(STATUS "Looking for FFTW3Q - found using PkgConfig")
-	endif()
-	if (FFTW3Q_LIBRARIES)
-	  list(APPEND FFTW_LIBRARIES "${FFTW3Q_LIBRARIES}")
-	endif()
-	if(FFTW3Q_INCLUDE_DIRS)
-	  list(APPEND FFTW_INCLUDE_DIRS "${FFTW3Q_INCLUDE_DIRS}")
-	else()
-	  if (NOT FFTW_FIND_QUIETLY)
-	    message(WARNING "FFTW3Q_INCLUDE_DIRS is empty using PkgConfig."
-	      "Perhaps the path to fftw3q headers is already present in your"
-	      "CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
-	  endif()
-	endif()
-	if(FFTW3Q_LIBRARY_DIRS)
-	  list(APPEND FFTW_LIBRARY_DIRS "${FFTW3Q_LIBRARY_DIRS}")
-	endif()
+        if (NOT FFTW_FIND_QUIETLY)
+          message(STATUS "Looking for FFTW3Q - found using PkgConfig")
+        endif()
+        if (FFTW3Q_LIBRARIES)
+          list(APPEND FFTW_LIBRARIES "${FFTW3Q_LIBRARIES}")
+        endif()
+        if(FFTW3Q_INCLUDE_DIRS)
+          list(APPEND FFTW_INCLUDE_DIRS "${FFTW3Q_INCLUDE_DIRS}")
+        else()
+          if (NOT FFTW_FIND_QUIETLY)
+            message(WARNING "FFTW3Q_INCLUDE_DIRS is empty using PkgConfig."
+              "Perhaps the path to fftw3q headers is already present in your"
+              "CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
+          endif()
+        endif()
+        if(FFTW3Q_LIBRARY_DIRS)
+          list(APPEND FFTW_LIBRARY_DIRS "${FFTW3Q_LIBRARY_DIRS}")
+        endif()
       else(FFTW3Q_FOUND)
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(STATUS "Looking for FFTW3Q - not found using PkgConfig."
-	    "\n   Perhaps you should add the directory containing fftw3q.pc to"
-	    "\n   the PKG_CONFIG_PATH environment variable.")
-	endif()
+        if (NOT FFTW_FIND_QUIETLY)
+          message(STATUS "Looking for FFTW3Q - not found using PkgConfig."
+            "\n   Perhaps you should add the directory containing fftw3q.pc to"
+            "\n   the PKG_CONFIG_PATH environment variable.")
+        endif()
       endif(FFTW3Q_FOUND)
     else()
       pkg_search_module(FFTW3 fftw3)
@@ -322,28 +322,28 @@ if (NOT FFTW_LOOK_FOR_MKL AND NOT FFTW_LOOK_FOR_ESSL)
     if (FFTW3_FOUND)
       set(FFTW_C_FLAGS "${FFTW3_CFLAGS_OTHER}")
       if (NOT FFTW_FIND_QUIETLY)
-	message(STATUS "Looking for FFTW3 - found using PkgConfig")
+        message(STATUS "Looking for FFTW3 - found using PkgConfig")
       endif()
       if (FFTW3_LIBRARIES)
-	list(APPEND FFTW_LIBRARIES "${FFTW3_LIBRARIES}")
+        list(APPEND FFTW_LIBRARIES "${FFTW3_LIBRARIES}")
       endif()
       if(FFTW3_INCLUDE_DIRS)
-	    list(APPEND FFTW_INCLUDE_DIRS "${FFTW3_INCLUDE_DIRS}")
+            list(APPEND FFTW_INCLUDE_DIRS "${FFTW3_INCLUDE_DIRS}")
       else()
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(WARNING "FFTW3_INCLUDE_DIRS is empty using PkgConfig."
-	    "Perhaps the path to fftw3 headers is already present in your"
-	    "CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
-	endif()
+        if (NOT FFTW_FIND_QUIETLY)
+          message(WARNING "FFTW3_INCLUDE_DIRS is empty using PkgConfig."
+            "Perhaps the path to fftw3 headers is already present in your"
+            "CPATH/C(PLUS)_INCLUDE_PATH environment variables.")
+        endif()
       endif()
       if(FFTW3_LIBRARY_DIRS)
-	    list(APPEND FFTW_LIBRARY_DIRS "${FFTW3_LIBRARY_DIRS}")
+            list(APPEND FFTW_LIBRARY_DIRS "${FFTW3_LIBRARY_DIRS}")
       endif()
     else(FFTW3_FOUND)
       if (NOT FFTW_FIND_QUIETLY)
-	message(STATUS "Looking for FFTW3 - not found using PkgConfig."
-	  "\n   Perhaps you should add the directory containing fftw3.pc to"
-	  "\n   the PKG_CONFIG_PATH environment variable.")
+        message(STATUS "Looking for FFTW3 - not found using PkgConfig."
+          "\n   Perhaps you should add the directory containing fftw3.pc to"
+          "\n   the PKG_CONFIG_PATH environment variable.")
       endif()
     endif(FFTW3_FOUND)
 
@@ -425,15 +425,15 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
     if(FFTW_DIR)
       set(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS "FFTW_${FFTW3_HEADER_TO_FIND}_DIRS-NOTFOUND")
       find_path(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS
-	NAMES ${FFTW3_HEADER_TO_FIND}
-	HINTS ${FFTW_DIR}
-	PATH_SUFFIXES "include" "include/fftw")
+        NAMES ${FFTW3_HEADER_TO_FIND}
+        HINTS ${FFTW_DIR}
+        PATH_SUFFIXES "include" "include/fftw")
     else()
       set(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS "FFTW_${FFTW3_HEADER_TO_FIND}_DIRS-NOTFOUND")
       find_path(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS
-	NAMES ${FFTW3_HEADER_TO_FIND}
-	HINTS ${PATH_TO_LOOK_FOR}
-	PATH_SUFFIXES "fftw")
+        NAMES ${FFTW3_HEADER_TO_FIND}
+        HINTS ${PATH_TO_LOOK_FOR}
+        PATH_SUFFIXES "fftw")
     endif()
   endif()
   mark_as_advanced(FFTW_${FFTW3_HEADER_TO_FIND}_DIRS)
@@ -473,20 +473,20 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
     if (ENV_MKLROOT)
       list(APPEND _lib_env "${ENV_MKLROOT}/lib")
       if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
-	list(APPEND _lib_env "${ENV_MKLROOT}/lib64")
-	list(APPEND _lib_env "${ENV_MKLROOT}/lib/intel64")
+        list(APPEND _lib_env "${ENV_MKLROOT}/lib64")
+        list(APPEND _lib_env "${ENV_MKLROOT}/lib/intel64")
       else()
-	list(APPEND _lib_env "${ENV_MKLROOT}/lib32")
-	list(APPEND _lib_env "${ENV_MKLROOT}/lib/ia32")
+        list(APPEND _lib_env "${ENV_MKLROOT}/lib32")
+        list(APPEND _lib_env "${ENV_MKLROOT}/lib/ia32")
       endif()
     endif()
     if(WIN32)
       string(REPLACE ":" ";" _lib_env2 "$ENV{LIB}")
     else()
       if(APPLE)
-	string(REPLACE ":" ";" _lib_env2 "$ENV{DYLD_LIBRARY_PATH}")
+        string(REPLACE ":" ";" _lib_env2 "$ENV{DYLD_LIBRARY_PATH}")
       else()
-	string(REPLACE ":" ";" _lib_env2 "$ENV{LD_LIBRARY_PATH}")
+        string(REPLACE ":" ";" _lib_env2 "$ENV{LD_LIBRARY_PATH}")
       endif()
       list(APPEND _lib_env "${_lib_env2}")
       list(APPEND _lib_env "${CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES}")
@@ -526,7 +526,7 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
     endif()
     if (FFTW_LOOK_FOR_FFTW_QUAD)
       if (NOT FFTW_LOOK_FOR_MKL AND NOT FFTW_LOOK_FOR_ESSL)
-	list(APPEND FFTW_libs_to_find "quadmath")
+        list(APPEND FFTW_libs_to_find "quadmath")
       endif()
     endif()
 
@@ -540,27 +540,27 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
     # call cmake macro to find the lib path
     if(FFTW_LIBDIR)
       foreach(fftw_lib ${FFTW_libs_to_find})
-	set(FFTW_${fftw_lib}_LIBRARY "FFTW_${fftw_lib}_LIBRARY-NOTFOUND")
-	find_library(FFTW_${fftw_lib}_LIBRARY
-	  NAMES ${fftw_lib}
-	  HINTS ${FFTW_LIBDIR})
+        set(FFTW_${fftw_lib}_LIBRARY "FFTW_${fftw_lib}_LIBRARY-NOTFOUND")
+        find_library(FFTW_${fftw_lib}_LIBRARY
+          NAMES ${fftw_lib}
+          HINTS ${FFTW_LIBDIR})
       endforeach()
     else()
       if(FFTW_DIR)
-	foreach(fftw_lib ${FFTW_libs_to_find})
-	  set(FFTW_${fftw_lib}_LIBRARY "FFTW_${fftw_lib}_LIBRARY-NOTFOUND")
-	  find_library(FFTW_${fftw_lib}_LIBRARY
-	    NAMES ${fftw_lib}
-	    HINTS ${FFTW_DIR}
-	    PATH_SUFFIXES lib lib32 lib64)
-	endforeach()
+        foreach(fftw_lib ${FFTW_libs_to_find})
+          set(FFTW_${fftw_lib}_LIBRARY "FFTW_${fftw_lib}_LIBRARY-NOTFOUND")
+          find_library(FFTW_${fftw_lib}_LIBRARY
+            NAMES ${fftw_lib}
+            HINTS ${FFTW_DIR}
+            PATH_SUFFIXES lib lib32 lib64)
+        endforeach()
       else()
-	foreach(fftw_lib ${FFTW_libs_to_find})
-	  set(FFTW_${fftw_lib}_LIBRARY "FFTW_${fftw_lib}_LIBRARY-NOTFOUND")
-	  find_library(FFTW_${fftw_lib}_LIBRARY
-	    NAMES ${fftw_lib}
-	    HINTS ${PATH_TO_LOOK_FOR})
-	endforeach()
+        foreach(fftw_lib ${FFTW_libs_to_find})
+          set(FFTW_${fftw_lib}_LIBRARY "FFTW_${fftw_lib}_LIBRARY-NOTFOUND")
+          find_library(FFTW_${fftw_lib}_LIBRARY
+            NAMES ${fftw_lib}
+            HINTS ${PATH_TO_LOOK_FOR})
+        endforeach()
       endif()
     endif()
 
@@ -569,15 +569,15 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
     foreach(fftw_lib ${FFTW_libs_to_find})
 
       if (FFTW_${fftw_lib}_LIBRARY)
-	get_filename_component(${fftw_lib}_lib_path "${FFTW_${fftw_lib}_LIBRARY}" PATH)
-	# set cmake variables
-	list(APPEND FFTW_LIBRARIES "${FFTW_${fftw_lib}_LIBRARY}")
-	list(APPEND FFTW_LIBRARY_DIRS "${${fftw_lib}_lib_path}")
+        get_filename_component(${fftw_lib}_lib_path "${FFTW_${fftw_lib}_LIBRARY}" PATH)
+        # set cmake variables
+        list(APPEND FFTW_LIBRARIES "${FFTW_${fftw_lib}_LIBRARY}")
+        list(APPEND FFTW_LIBRARY_DIRS "${${fftw_lib}_lib_path}")
       else ()
-	list(APPEND FFTW_LIBRARIES "${FFTW_${fftw_lib}_LIBRARY}")
-	if (NOT FFTW_FIND_QUIETLY)
-	  message(STATUS "Looking for FFTW -- lib ${fftw_lib} not found")
-	endif()
+        list(APPEND FFTW_LIBRARIES "${FFTW_${fftw_lib}_LIBRARY}")
+        if (NOT FFTW_FIND_QUIETLY)
+          message(STATUS "Looking for FFTW -- lib ${fftw_lib} not found")
+        endif()
       endif ()
       mark_as_advanced(FFTW_${fftw_lib}_LIBRARY)
 
@@ -586,7 +586,7 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
     # check if one lib is NOTFOUND
     foreach(lib ${FFTW_LIBRARIES})
       if (NOT lib)
-	set(FFTW_LIBRARIES "FFTW_LIBRARIES-NOTFOUND")
+        set(FFTW_LIBRARIES "FFTW_LIBRARIES-NOTFOUND")
       endif()
     endforeach()
 
@@ -597,67 +597,67 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
     # FFTW relies on blas libs
     if (FFTW_LOOK_FOR_THREADS)
       if (FFTW_LOOK_FOR_MKL)
-	if (BLAS_PAR_LIBRARIES)
-	  list(APPEND FFTW_LIBRARIES "${BLAS_PAR_LIBRARIES}")
-	  if (NOT FFTW_FIND_QUIETLY)
-	    message(STATUS "Multithreaded FFTW has been found: ${FFTW_LIBRARIES}")
-	  endif()
-	else()
-	  if (NOT FFTW_FIND_QUIETLY)
-	    if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
-	      message(FATAL_ERROR "FFTW is required but not found.")
-	    else()
-	      message(STATUS "Multithreaded FFTW not found.")
-	    endif()
-	  endif()
-	endif(BLAS_PAR_LIBRARIES)
+        if (BLAS_PAR_LIBRARIES)
+          list(APPEND FFTW_LIBRARIES "${BLAS_PAR_LIBRARIES}")
+          if (NOT FFTW_FIND_QUIETLY)
+            message(STATUS "Multithreaded FFTW has been found: ${FFTW_LIBRARIES}")
+          endif()
+        else()
+          if (NOT FFTW_FIND_QUIETLY)
+            if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
+              message(FATAL_ERROR "FFTW is required but not found.")
+            else()
+              message(STATUS "Multithreaded FFTW not found.")
+            endif()
+          endif()
+        endif(BLAS_PAR_LIBRARIES)
       elseif (FFTW_LOOK_FOR_ESSL)
-	if (FFTW_LIBRARIES AND BLAS_PAR_LIBRARIES)
-	  list(APPEND FFTW_LIBRARIES "${BLAS_PAR_LIBRARIES}")
-	  if (NOT FFTW_FIND_QUIETLY)
-	    message(STATUS "Multithreaded FFTW has been found: ${FFTW_LIBRARIES}")
-	  endif()
-	else()
-	  if (NOT FFTW_FIND_QUIETLY)
-	    if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
-	      message(FATAL_ERROR "FFTW is required but not found.")
-	    else()
-	      message(STATUS "Multithreaded FFTW not found.")
-	    endif()
-	  endif()
-	endif(FFTW_LIBRARIES AND BLAS_PAR_LIBRARIES)
+        if (FFTW_LIBRARIES AND BLAS_PAR_LIBRARIES)
+          list(APPEND FFTW_LIBRARIES "${BLAS_PAR_LIBRARIES}")
+          if (NOT FFTW_FIND_QUIETLY)
+            message(STATUS "Multithreaded FFTW has been found: ${FFTW_LIBRARIES}")
+          endif()
+        else()
+          if (NOT FFTW_FIND_QUIETLY)
+            if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
+              message(FATAL_ERROR "FFTW is required but not found.")
+            else()
+              message(STATUS "Multithreaded FFTW not found.")
+            endif()
+          endif()
+        endif(FFTW_LIBRARIES AND BLAS_PAR_LIBRARIES)
       endif()
     else(FFTW_LOOK_FOR_THREADS)
       if (FFTW_LOOK_FOR_MKL)
-	if (BLAS_SEQ_LIBRARIES)
-	  list(APPEND FFTW_LIBRARIES "${BLAS_SEQ_LIBRARIES}")
-	  if (NOT FFTW_FIND_QUIETLY)
-	    message(STATUS "FFTW has been found: ${FFTW_LIBRARIES}")
-	  endif()
-	else()
-	  if (NOT FFTW_FIND_QUIETLY)
-	    if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
-	      message(FATAL_ERROR "FFTW is required but not found.")
-	    else()
-	      message(STATUS "FFTW not found.")
-	    endif()
-	  endif()
-	endif(BLAS_SEQ_LIBRARIES)
+        if (BLAS_SEQ_LIBRARIES)
+          list(APPEND FFTW_LIBRARIES "${BLAS_SEQ_LIBRARIES}")
+          if (NOT FFTW_FIND_QUIETLY)
+            message(STATUS "FFTW has been found: ${FFTW_LIBRARIES}")
+          endif()
+        else()
+          if (NOT FFTW_FIND_QUIETLY)
+            if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
+              message(FATAL_ERROR "FFTW is required but not found.")
+            else()
+              message(STATUS "FFTW not found.")
+            endif()
+          endif()
+        endif(BLAS_SEQ_LIBRARIES)
       elseif (FFTW_LOOK_FOR_ESSL)
-	if (FFTW_LIBRARIES AND BLAS_SEQ_LIBRARIES)
-	  list(APPEND FFTW_LIBRARIES "${BLAS_SEQ_LIBRARIES}")
-	  if (NOT FFTW_FIND_QUIETLY)
-	    message(STATUS "FFTW has been found: ${FFTW_LIBRARIES}")
-	  endif()
-	else()
-	  if (NOT FFTW_FIND_QUIETLY)
-	    if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
-	      message(FATAL_ERROR "FFTW is required but not found.")
-	    else()
-	      message(STATUS "FFTW not found.")
-	    endif()
-	  endif()
-	endif(FFTW_LIBRARIES AND BLAS_SEQ_LIBRARIES)
+        if (FFTW_LIBRARIES AND BLAS_SEQ_LIBRARIES)
+          list(APPEND FFTW_LIBRARIES "${BLAS_SEQ_LIBRARIES}")
+          if (NOT FFTW_FIND_QUIETLY)
+            message(STATUS "FFTW has been found: ${FFTW_LIBRARIES}")
+          endif()
+        else()
+          if (NOT FFTW_FIND_QUIETLY)
+            if (FFTW_FIND_REQUIRED AND FFTW_FIND_REQUIRED_MKL)
+              message(FATAL_ERROR "FFTW is required but not found.")
+            else()
+              message(STATUS "FFTW not found.")
+            endif()
+          endif()
+        endif(FFTW_LIBRARIES AND BLAS_SEQ_LIBRARIES)
       endif()
     endif(FFTW_LOOK_FOR_THREADS)
 
@@ -665,7 +665,7 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
       list(APPEND FFTW_LIBRARY_DIRS "${BLAS_LIBRARY_DIRS}")
     else()
       if (NOT FFTW_FIND_QUIETLY)
-	message(WARNING "FFTW_LIBRARY_DIRS may not be complete because BLAS_LIBRARY_DIRS is empty.")
+        message(WARNING "FFTW_LIBRARY_DIRS may not be complete because BLAS_LIBRARY_DIRS is empty.")
       endif()
     endif()
 
@@ -704,7 +704,7 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
     endif()
     # OMP
     if(FFTW_LOOK_FOR_OMP)
-      set(REQUIRED_FLAGS "-fopenmp")
+      list(APPEND REQUIRED_FLAGS "${OPENMP_C_FLAGS}")
       #if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
       #  # either gomp ...
       #  list(APPEND REQUIRED_LIBS "-lgomp")
@@ -718,7 +718,7 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
     if(FFTW_LOOK_FOR_MKL)
       list(APPEND REQUIRED_LIBS "${CMAKE_THREAD_LIBS_INIT}")
       if (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
-	list(APPEND REQUIRED_LDFLAGS "-Wl,--no-as-needed")
+        list(APPEND REQUIRED_LDFLAGS "-Wl,--no-as-needed")
       endif()
     endif()
     # m
@@ -761,11 +761,11 @@ if( (NOT PKG_CONFIG_EXECUTABLE) OR
       list(REMOVE_DUPLICATES FFTW_LINKER_FLAGS)
     else()
       if(NOT FFTW_FIND_QUIETLY)
-	message(STATUS "Looking for FFTW : test of ${FFTW_PREC_TESTFUNC}fftw_execute_ with fftw library fails")
-	message(STATUS "CMAKE_REQUIRED_LIBRARIES: ${CMAKE_REQUIRED_LIBRARIES}")
-	message(STATUS "CMAKE_REQUIRED_INCLUDES: ${CMAKE_REQUIRED_INCLUDES}")
-	message(STATUS "CMAKE_REQUIRED_FLAGS: ${CMAKE_REQUIRED_FLAGS}")
-	message(STATUS "Check in CMakeFiles/CMakeError.log to figure out why it fails")
+        message(STATUS "Looking for FFTW : test of ${FFTW_PREC_TESTFUNC}fftw_execute_ with fftw library fails")
+        message(STATUS "CMAKE_REQUIRED_LIBRARIES: ${CMAKE_REQUIRED_LIBRARIES}")
+        message(STATUS "CMAKE_REQUIRED_INCLUDES: ${CMAKE_REQUIRED_INCLUDES}")
+        message(STATUS "CMAKE_REQUIRED_FLAGS: ${CMAKE_REQUIRED_FLAGS}")
+        message(STATUS "Check in CMakeFiles/CMakeError.log to figure out why it fails")
       endif()
     endif()
     set(CMAKE_REQUIRED_INCLUDES)