build: add flags for IntelLLVM (#928)

Author: e-kwsm

cmake/CompilerConfiguration.cmake

@@ -18,6 +18,10 @@ elseif (CMAKE_Fortran_COMPILER_ID STREQUAL "Intel")
   set(CMAKE_Fortran_FLAGS          "${CMAKE_Fortran_FLAGS} -free -stand=f18 -fpp -heap-arrays")
   set(CMAKE_Fortran_FLAGS_RELEASE  "-O3 -g")
   set(CMAKE_Fortran_FLAGS_DEBUG    "-O2 -debug")
+elseif (CMAKE_Fortran_COMPILER_ID STREQUAL "IntelLLVM")
+  set(CMAKE_Fortran_FLAGS          "${CMAKE_Fortran_FLAGS} -free -stand f18 -fpp -heap-arrays")
+  set(CMAKE_Fortran_FLAGS_RELEASE  "-O3 -g")
+  set(CMAKE_Fortran_FLAGS_DEBUG    "-O2 -debug")
 elseif (CMAKE_Fortran_COMPILER_ID STREQUAL "PGI")
   set(CMAKE_Fortran_FLAGS          "${CMAKE_Fortran_FLAGS} -Mfreeform -Mextend -Mallocatable=03")  # -Mallocatable=03: enable F2003+ assignment semantics
   set(CMAKE_Fortran_FLAGS_RELEASE  "-fast")
@@ -67,6 +71,9 @@ elseif (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
 elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
   set(CMAKE_CXX_FLAGS_RELEASE      "-O3 -g")
   set(CMAKE_CXX_FLAGS_DEBUG        "-O0 -debug")
+elseif (CMAKE_CXX_COMPILER_ID STREQUAL "IntelLLVM")
+  set(CMAKE_CXX_FLAGS_RELEASE      "-O3 -g")
+  set(CMAKE_CXX_FLAGS_DEBUG        "-O0 -debug")
 elseif (CMAKE_CXX_COMPILER_ID STREQUAL "PGI")
   set(CMAKE_CXX_FLAGS_RELEASE      "-fast")
   set(CMAKE_CXX_FLAGS_DEBUG        "-g")

examples/CMakeLists.txt

@@ -14,8 +14,10 @@ foreach (dbcsr_program_src ${DBCSR_PROGRAM_SRCS_FTN})
 
   # with the Intel compiler CMake 3.12 seems to forget that the source is
   # actually Fortran and needs to be told explicitly:
-  set_target_properties(${dbcsr_program_name} PROPERTIES LINKER_LANGUAGE
-                                                         Fortran)
+  if (NOT "${CMAKE_Fortran_COMPILER_ID}" STREQUAL IntelLLVM)
+    set_target_properties(${dbcsr_program_name} PROPERTIES LINKER_LANGUAGE
+                                                           Fortran)
+  endif ()
 endforeach ()
 
 # override -Werror for certain translation units
@@ -32,8 +34,10 @@ if (WITH_C_API)
     set(dbcsr_program_name ${dbcsr_program_name}_cpp)
     add_executable(${dbcsr_program_name} ${dbcsr_program_src})
     target_link_libraries(${dbcsr_program_name} dbcsr_c MPI::MPI_CXX)
-    set_target_properties(${dbcsr_program_name} PROPERTIES LINKER_LANGUAGE
-                                                           Fortran)
+    if (NOT "${CMAKE_Fortran_COMPILER_ID}" STREQUAL IntelLLVM)
+      set_target_properties(${dbcsr_program_name} PROPERTIES LINKER_LANGUAGE
+                                                             Fortran)
+    endif ()
     if (OpenMP_FOUND)
       target_compile_options(${dbcsr_program_name} PRIVATE ${OpenMP_CXX_FLAGS})
       target_link_libraries(${dbcsr_program_name} OpenMP::OpenMP_Fortran)