[hotfix] fix misleadingly summary BLAS=MKL when there's no BLAS insta…

…ll (#47803)

Summary: Pull Request resolved: #47803

Reviewed By: samestep

Differential Revision: D24907453

Pulled By: walterddr

fbshipit-source-id: a3e41041f6aa506b054eb0ffc61f8525ba02cbf1

cmake/Dependencies.cmake

@@ -1643,6 +1643,8 @@ if(NOT INTERN_BUILD_MOBILE)
   if(LAPACK_FOUND)
     set(USE_LAPACK 1)
     list(APPEND Caffe2_PRIVATE_DEPENDENCY_LIBS ${LAPACK_LIBRARIES})
+  else()
+    set(USE_LAPACK 0)
   endif()
 
   if(NOT USE_CUDA)

cmake/Summary.cmake

@@ -9,7 +9,6 @@ function(caffe2_print_configuration_summary)
   message(STATUS "  C++ compiler          : ${CMAKE_CXX_COMPILER}")
   message(STATUS "  C++ compiler id       : ${CMAKE_CXX_COMPILER_ID}")
   message(STATUS "  C++ compiler version  : ${CMAKE_CXX_COMPILER_VERSION}")
-  message(STATUS "  BLAS                  : ${BLAS}")
   message(STATUS "  CXX flags             : ${CMAKE_CXX_FLAGS}")
   message(STATUS "  Build type            : ${CMAKE_BUILD_TYPE}")
   get_directory_property(tmp DIRECTORY ${PROJECT_SOURCE_DIR} COMPILE_DEFINITIONS)
@@ -51,6 +50,14 @@ function(caffe2_print_configuration_summary)
 
   message(STATUS "  INTERN_BUILD_MOBILE   : ${INTERN_BUILD_MOBILE}")
 
+  message(STATUS "  USE_BLAS              : ${USE_BLAS}")
+  if(${USE_BLAS})
+    message(STATUS "    BLAS                : ${BLAS_INFO}")
+  endif()
+  message(STATUS "  USE_LAPACK            : ${USE_LAPACK}")
+  if(${USE_LAPACK})
+    message(STATUS "    LAPACK              : ${LAPACK_INFO}")
+  endif()
   message(STATUS "  USE_ASAN              : ${USE_ASAN}")
   message(STATUS "  USE_CPP_CODE_COVERAGE : ${USE_CPP_CODE_COVERAGE}")
   message(STATUS "  USE_CUDA              : ${USE_CUDA}")