Tests/RunCMake/FindOpenMP/check-flags.cmake

# Checks the verbose build output against these lists of targets:
#   link_omp     - link line has the OpenMP flag
#   link_mark    - link line has ${mark}
#   compile_mark - compile line has ${mark}
# Other targets lack them, and no other marker appears.

string(REPLACE ";" "," out "${actual_stdout}")
string(REPLACE "\n" ";" lines "${out}")

function(check_line kind t line what pattern want)
  list(FIND ${want} "${t}" i)
  if(line MATCHES "${pattern}")
    if(i EQUAL -1)
      string(APPEND msg "${kind} line of '${t}' has ${what} but should not:\n  ${line}\n")
    endif()
  elseif(NOT i EQUAL -1)
    string(APPEND msg "${kind} line of '${t}' lacks ${what}:\n  ${line}\n")
  endif()
  set(msg "${msg}" PARENT_SCOPE)
endfunction()

set(msg "")
foreach(t IN ITEMS exe lib static mixed hostc host)
  set(compile "")
  set(link "")
  foreach(l IN LISTS lines)
    if(l MATCHES " -o CMakeFiles/${t}\\.dir/[^ ]+ -c ")
      set(compile "${l}")
    elseif(l MATCHES " -o ([^ ]*/)?${t}( |$)")
      set(link "${l}")
    endif()
  endforeach()
  if(compile STREQUAL "")
    string(APPEND msg "No compile line for '${t}'.\n")
  elseif(mark)
    check_line(Compile ${t} "${compile}" "${mark}" "-D${mark}( |$)" compile_mark)
  endif()
  # The static library is archived, not linked.
  if(t STREQUAL "lib")
    continue()
  endif()
  if(link STREQUAL "")
    string(APPEND msg "No link line for '${t}'.\n")
    continue()
  endif()
  check_line(Link ${t} "${link}" "the OpenMP flag" "fopenmp" link_omp)
  if(mark)
    check_line(Link ${t} "${link}" "${mark}" "-D${mark}( |$)" link_mark)
  endif()
endforeach()

foreach(m IN ITEMS MARK_A MARK_B)
  if(NOT m STREQUAL "${mark}" AND actual_stdout MATCHES "-D${m}")
    string(APPEND msg "Unexpected ${m} in the build output.\n")
  endif()
endforeach()

if(msg)
  set(RunCMake_TEST_FAILED "${msg}")
endif()