Flang: correct check_symbol_exists libs

Author: scivision

cmake/compilers.cmake

@@ -53,16 +53,18 @@ check_include_file("ISO_Fortran_binding.h" HAVE_ISO_FORTRAN_BINDING_H)
 # otherwise, we'd need to use try_compile() with a project for each symbol
 # IntelLLVM didn't need this trick
 if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
-  set(CMAKE_REQUIRED_LIBRARIES "gfortran")
+  set(CMAKE_REQUIRED_LIBRARIES gfortran)
 elseif(CMAKE_C_COMPILER_ID STREQUAL "NVHPC")
-  set(CMAKE_REQUIRED_LIBRARIES "nvf")
+  set(CMAKE_REQUIRED_LIBRARIES nvf)
+elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "LLVMFlang")
+  set(CMAKE_REQUIRED_LIBRARIES FortranRuntime FortranDecimal)
 endif()
 
 # some compilers (e.g. NVHPC) have ISO_Fortran_binding.h but don't
 # have all the functions
 if(HAVE_ISO_FORTRAN_BINDING_H)
-check_symbol_exists(CFI_is_contiguous "ISO_Fortran_binding.h" HAVE_CFI_IS_CONTIGUOUS)
-check_symbol_exists(CFI_setpointer "ISO_Fortran_binding.h" HAVE_CFI_SETPOINTER)
+  check_symbol_exists(CFI_is_contiguous "ISO_Fortran_binding.h" HAVE_CFI_IS_CONTIGUOUS)
+  check_symbol_exists(CFI_setpointer "ISO_Fortran_binding.h" HAVE_CFI_SETPOINTER)
 endif()
 
 endfunction()

test/iso_fortran_binding/CMakeLists.txt

@@ -38,14 +38,17 @@ if(HAVE_C_CHAR_PTR)
   add_executable(string_array string_array.cpp string_array.f90)
   set_property(TARGET string_array PROPERTY LINKER_LANGUAGE CXX)
   target_compile_options(string_array PRIVATE "$<$<COMPILE_LANG_AND_ID:Fortran,GNU>:-Wno-uninitialized>")
+
   add_test(NAME string_array COMMAND string_array)
   set_property(TEST string_array PROPERTY PASS_REGULAR_EXPRESSION
 "red[ \n]+green[ \n]+blue")
 endif()
 
 
-add_executable(cfi_setpointer setpointer.f90 setpointer.c)
-add_test(NAME CFI_setpointer COMMAND cfi_setpointer)
+if(HAVE_CFI_SETPOINTER)
+  add_executable(cfi_setpointer setpointer.f90 setpointer.c)
+  add_test(NAME CFI_setpointer COMMAND cfi_setpointer)
+endif()
 
 foreach(t IN ITEMS cfi_setpointer sampling)
   if(TARGET ${t})