CMake : add custom blas/lapack

CMakeLists.txt

@@ -221,6 +221,11 @@ if(SIZEOF_VOID_P EQUAL 8)
 endif(SIZEOF_VOID_P EQUAL 8)
 
 if(ENABLE_BLAS_LAPACK)
+  if(BLAS_LAPACK_LIBRARIES)
+    set_config_option(HAVE_BLAS "Blas(Custom)")
+    set_config_option(HAVE_LAPACK "Lapack(Custom)")
+    set(LAPACK_LIBRARIES ${BLAS_LAPACK_LIBRARIES})
+  else(BLAS_LAPACK_LIBRARIES)
     if(MSVC)
       # on Windows with Visual C++ try really hard to find blas/lapack
       # *without* requiring a Fortran compiler: 1) try to find the Intel
@@ -337,6 +342,7 @@ if(ENABLE_BLAS_LAPACK)
       message(STATUS "Warning: Could not find Blas or Lapack: most meshing algorithms "
               "will not be functional")
     endif(NOT HAVE_BLAS OR NOT HAVE_LAPACK)
+  endif(BLAS_LAPACK_LIBRARIES)
 endif(ENABLE_BLAS_LAPACK)
 
 add_subdirectory(Common)