Remove the required on cblas/lapacke packages

CMakeLists.txt

@@ -114,18 +114,16 @@ include(CheckSystem)
 
 # SPM depends on Lapacke and CBLAS
 #---------------------------------
-find_package(LAPACKE REQUIRED)
-if(LAPACKE_FOUND)
-  message(STATUS "lapacke: ${LAPACKE_INCLUDE_DIRS}")
-  include_directories(${LAPACKE_INCLUDE_DIRS})
-endif()
-
-find_package(CBLAS REQUIRED)
+find_package(CBLAS) # Should be REQUIRED for BLAS sequential only
 if(CBLAS_FOUND)
-  message(STATUS "cblas: ${CBLAS_INCLUDE_DIRS}")
   include_directories(${CBLAS_INCLUDE_DIRS})
 endif()
 
+find_package(LAPACKE) # Should be also REQUIRED
+if(LAPACKE_FOUND)
+  include_directories(${LAPACKE_INCLUDE_DIRS})
+endif()
+
 ### Store dependencies not handled with pkg-config
 set( DEPS_LIBRARIES
   ${LAPACKE_LIBRARIES_DEP}