Search for ChASE only for the MPI parallelized target

ChASE needs several libraries to be available to work.
This includes MPI, LAPACK, LIBSTDC++.

My way to let the ChASE test succeed at the moment is to invoke
the configure script with

FLEUR_LIBRARIES="-L**PATH_TO:libchase_fleur.a**;-lchase_fleur;-lstdc++" ./fleur/configure.sh IFF

cmake/CompilerConfig.txt

@@ -12,13 +12,13 @@ include("cmake/tests/test_HDF5.cmake")
 include("cmake/tests/test_Wannier90.cmake")
 include("cmake/tests/test_Wannier4.cmake")
 include("cmake/tests/test_Wannier5.cmake")
-include("cmake/tests/test_ChASE.cmake")
 include("cmake/tests/test_MAGMA.cmake")
 include("cmake/tests/test_GPU.cmake")
 include("cmake/tests/test_LibXC.cmake")
 if (FLEUR_USE_MPI)
 include("cmake/tests/test_SCALAPACK.cmake")
 include("cmake/tests/test_ELPA.cmake")
+include("cmake/tests/test_ChASE.cmake")
 endif()
 
 include("cmake/compileenv.txt")

cmake/ReportConfig.txt

@@ -24,15 +24,16 @@ message("${Green}  HDF5 Library found          : ${CReset}    ${FLEUR_USE_HDF5}"
 message("${Green}  Wannier90 1.2 Library found : ${CReset}    ${FLEUR_USE_WANN}")
 message("${Green}  Wannier90-4   Library found : ${CReset}    ${FLEUR_USE_WANN4}")
 message("${Green}  Wannier90-5   Library found : ${CReset}    ${FLEUR_USE_WANN5}")
-message("${Green}  ChASE Library found         : ${CReset}    ${FLEUR_USE_CHASE}")
 message("${Green}  MAGMA Library found         : ${CReset}    ${FLEUR_USE_MAGMA}")
 message("${Green}  MPI Library found           : ${CReset}    ${FLEUR_USE_MPI}")
 if (FLEUR_USE_MPI)
   message("${Green}    SCALAPACK Library found   : ${CReset}    ${FLEUR_USE_SCALAPACK}")
   message("${Green}    ELPA Library found        : ${CReset}    ${FLEUR_USE_ELPA}")
+  message("${Green}    ChASE Library found       : ${CReset}    ${FLEUR_USE_CHASE}")
 else()
   message("${Green}    SCALAPACK Library found   : ${CReset}    ---")
   message("${Green}    ELPA Library found        : ${CReset}    ---")
+  message("${Green}    ChASE Library found       : ${CReset}    ---")
 endif()
 message("${Green}  Compile GPU version         :  ${CReset}   ${FLEUR_USE_GPU}")
 message("\n")

cmake/tests/test_ChASE.cmake

 #First check if we can compile with ChASE
-try_compile(FLEUR_USE_CHASE ${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR}/cmake/tests/test_ChASE.f90 LINK_LIBRARIES ${FLEUR_LIBRARIES})
+try_compile(FLEUR_USE_CHASE ${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR}/cmake/tests/test_ChASE.f90 LINK_LIBRARIES ${FLEUR_LIBRARIES} OUTPUT_VARIABLE MY_OUT)
+
+message (${MY_OUT})
 
 if (NOT FLEUR_USE_CHASE)
    find_package(chase)
@@ -9,7 +11,6 @@ if (NOT FLEUR_USE_CHASE)
    try_compile(FLEUR_USE_CHASE ${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR}/cmake/tests/test_ChASE.f90 LINK_LIBRARIES ${TEST_LIBRARIES})
 
    if (FLEUR_USE_CHASE)
-      set(FLEUR_LIBRARIES ${FLEUR_LIBRARIES} ${CHASE_LIBRARIES} ${CHASE-FLEUR_LIBRARIES})
       set(FLEUR_MPI_LIBRARIES ${FLEUR_MPI_LIBRARIES} ${CHASE_LIBRARIES} ${CHASE-FLEUR_LIBRARIES})
    endif()
 endif()