Compile: Fail to build on CPU if no ScaLAPACK can be found by CMake

[Cstandardlib]

Describe the bug

When compiled with a user-specified SCALAPACK LIBRARY DIR, find_package will raise an error and quit.
The issue occurs on a FT CPU environment where the ScaLAPACK library is provided by giving its path, not a global environment.

CMakeLists.txt:

if(MKLROOT)
  ...
elseif(NOT USE_SW)
  find_package(FFTW3 REQUIRED)
  find_package(Lapack REQUIRED)
  include_directories(${FFTW3_INCLUDE_DIRS})
  list(APPEND math_libs FFTW3::FFTW3 LAPACK::LAPACK BLAS::BLAS)
  if(USE_DSP)
    target_link_libraries(${ABACUS_BIN_NAME} ${SCALAPACK_LIBRARY_DIR})
  else()
    find_package(ScaLAPACK REQUIRED)
    list(APPEND math_libs ScaLAPACK::ScaLAPACK)
  endif()

Expected behavior

No response

To Reproduce

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Environment

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Additional Context

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