Change the CMAKE (blas and fftw are on by default) and rename the build...

Change the CMAKE (blas and fftw are on by default) and rename the build example variable (but let it to ON by default)

CMakeLists.txt

@@ -51,10 +51,12 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
   #
   # Options
   option( ScalFMM_USE_MPI              "Set to ON to build ScaFMM with MPI"          OFF )
-  option( ScalFMM_USE_BLAS             "Set to ON to build ScaFMM with BLAS"         OFF )
-  option( ScalFMM_USE_FFT              "Set to ON to build ScaFMM with FFTW"         OFF )
+  option( ScalFMM_USE_BLAS             "Set to ON to build ScaFMM with BLAS"         ON )
+  option( ScalFMM_USE_FFT              "Set to ON to build ScaFMM with FFTW"         ON )
+  option( ScalFMM_BUILD_EXAMPLES       "Set to ON to compile examples "              ON  )
   option( ScalFMM_BUILD_TESTS          "Set to ON to build functionalities Tests"    OFF )
   option( ScalFMM_BUILD_UTESTS         "Set to ON to build UTests"                   OFF )
+  option( ScalFMM_INSTALL_DATA         "Set to ON to include the data when proceeding to the installtion " OFF )
   option( ScalFMM_BUILD_DEBUG          "Set to ON to build in Debug"                 OFF )
   option( ScalFMM_USE_LOG              "Set to ON to print output debug information" OFF )
   option( ScalFMM_USE_MEM_STATS        "Set to ON to profile memory"                 OFF )
@@ -64,7 +66,6 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
   option( ScalFMM_USE_AVX              "Set to ON to compile with AVX support (and use intrinsec AVX P2P)" OFF  )
   option( ScalFMM_USE_ASSERT           "Set to ON to enable safe tests during execution" ON  )
   option( ScalFMM_USE_MIC_NATIVE       "Set to ON to compile in native mode for MIC" OFF  )
-  option( ScalFMM_BUILD_ONLY_LIB       "Set to ON to compile only the lib (examples are not compiled) " OFF  )
   option( ScalFMM_ONLY_DEVEL           "Set to ON to compile Development tools (only scalfmm team)" ON )
   if( ScalFMM_ONLY_DEVEL )
     option( ScalFMM_USE_STARPU "Set to ON to build ScalFMM with StarPU" OFF )
@@ -258,29 +259,22 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
     option( ScalFMM_USE_MKL_AS_BLAS "Set to ON to use MKL CBLAS" OFF )
 
     if( ScalFMM_USE_MKL_AS_BLAS )
-
       set(BLA_VENDOR "Intel10_64lp_seq")
-      find_package(BLASEXT REQUIRED)
+      find_package(BLASEXT) # not REQUIRED
 
-      if(BLAS_FOUND AND BLAS_LIBRARY_DIRS)
+      if(BLAS_LIBRARY_DIRS)
         # the RPATH to be used when installing
         list(APPEND CMAKE_INSTALL_RPATH "${BLAS_LIBRARY_DIRS}")
-      else()
-        message(FATAL_ERROR "A BLAS library is required but has not been found")
       endif()
       unset(LAPACK_LIBRARIES)
       if (BLAS_LIBRARIES)
         set(BLASLAPACK_LIBRARIES ${BLAS_LIBRARIES})
       endif()
-
     elseif(ScalFMM_USE_EXTERNAL_BLAS)
-
       message(STATUS "BLAS SET BY EXTERNAL PROGRAM = ${BLAS_LIBRARIES}")
-
     else()
-
-      find_package(BLASEXT REQUIRED)
-      find_package(LAPACKEXT REQUIRED)
+      find_package(BLASEXT)  # not REQUIRED
+      find_package(LAPACKEXT)  # not REQUIRED
       set(BLASLAPACK_LIBRARIES)
       if (LAPACK_LIBRARIES)
         set(BLASLAPACK_LIBRARIES "${LAPACK_LIBRARIES}")
@@ -288,11 +282,16 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
       if (BLAS_LIBRARIES)
         list(APPEND BLASLAPACK_LIBRARIES "${BLAS_LIBRARIES}")
       endif()
-
     endif()
 
+    if(BLAS_FOUND)
         set(SCALFMM_LIBRARIES "${SCALFMM_LIBRARIES}; ${BLASLAPACK_LIBRARIES}")
         #message(STATUS "SCALFMM_LIBRARIES          = ${SCALFMM_LIBRARIES}")
+    else()
+        message(WARNING "BLAS has not been found, ScalFMM will continue to compile but some applications will be disabled.")
+        message(WARNING "If you have BLAS set BLAS_LIBDIR, BLAS_INCDIR or BLAS_DIR (CMake variables using -D or environment variables).")        
+        set(ScalFMM_USE_FFT OFF)
+    endif()
 
   endif(ScalFMM_USE_BLAS)
   list(APPEND FUSE_LIST "BLAS")
@@ -320,7 +319,7 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
         # The package can be used with the following COMPONENTS:
         # MKL, THREADS|OMP and/or SIMPLE|DOUBLE|LONG|QUAD
         # Default is DOUBLE and without THREADS|OMP
-        find_package(FFTW REQUIRED COMPONENTS MKL)
+        find_package(FFTW  COMPONENTS MKL) # not REQUIRED
         set(FFT_LIBRARIES "-L${FFTW_LIBRARY_DIRS_DEP};" CACHE STRING "Set your MKL flags")
         foreach (fft_lib ${FFTW_LIBRARIES_DEP})
           set(FFT_LIBRARIES "${FFT_LIBRARIES} ${fft_lib};")
@@ -336,7 +335,7 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
       # The package can be used with the following COMPONENTS:
       # MKL, THREADS|OMP and/or SIMPLE|DOUBLE|LONG|QUAD
       # Default is DOUBLE and without THREADS|OMP
-      find_package(FFTW REQUIRED)
+      find_package(FFTW) # not REQUIRED
 
       set(FFT_LIBRARIES "-L${FFTW_LIBRARY_DIRS_DEP};" CACHE STRING "Set your MKL flags")
       foreach (fft_lib ${FFTW_LIBRARIES_DEP})
@@ -350,9 +349,15 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
     if (FFT_INCLUDES)
         set(SCALFMM_INCLUDES "${SCALFMM_INCLUDES}; ${FFT_INCLUDES}")
     endif()
+    
+    if(FFTW_FOUND)
         message(STATUS "         SCALFMM_LIBRARIES          = ${SCALFMM_LIBRARIES}")
         message(STATUS "         SCALFMM_INCLUDES          = ${SCALFMM_INCLUDES}")
-
+    else()
+        message(WARNING "FFTW has not been found, ScalFMM will continue to compile but some applications will be disabled.")
+        message(WARNING "If you have FFTW set FFTW_LIBDIR, FFTW_INCDIR or FFTW_DIR (CMake variables using -D or environment variables).")        
+        set(ScalFMM_USE_FFT OFF)
+    endif()
   endif(ScalFMM_USE_FFT)
   list(APPEND FUSE_LIST "FFT")
 
@@ -576,7 +581,7 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
   ##################################################################
   #            Remove compilation  of the drivers                  #
   ##################################################################
-  if( NOT ScalFMM_BUILD_ONLY_LIB )
+  if( ScalFMM_BUILD_EXAMPLES )
     # Build - Examples and drivers
     add_subdirectory(Examples)
   endif()
@@ -585,7 +590,6 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
   ##################################################################
   # Build - UTILs
   if( ScalFMM_ONLY_DEVEL )
-    #if( NOT ScalFMM_BUILD_ONLY_LIB )
     add_subdirectory(Utils)
   endif()
 
@@ -650,15 +654,9 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/CMakeModules/morse/")
     @ONLY IMMEDIATE
     )
   #
-  install(FILES
-    ${ScalFMM_BINARY_DIR}/ScalFMMConfig.cmake
-    DESTINATION lib/
-    )
-  if( NOT ScalFMM_BUILD_ONLY_LIB)
-    install(FILES
-      ${ScalFMM_SOURCE_DIR}/Data/test20k.fma
-      DESTINATION Data/
-      )
+  install(FILES  ${ScalFMM_BINARY_DIR}/ScalFMMConfig.cmake  DESTINATION lib/  )
+  if( ScalFMM_INSTALL_DATA )
+    install(FILES  ${ScalFMM_SOURCE_DIR}/Data/test20k.fma  DESTINATION Data/   )
   endif()
 
   ##################################################################