[CMake] IF(... MATCHES WIN32) weird behavior

[Filipe Sousa]

On Tuesday 31 May 2005 18:33, Brad King wrote:
> Filipe Sousa wrote:
> > SET(arg "WIN32")
> > IF("${arg}" MATCHES "WIN32")
> >   MESSAGE(STATUS ":)")
> > ELSE("${arg}" MATCHES "WIN32")
> >   MESSAGE(STATUS ":(")
> > ENDIF("${arg}" MATCHES "WIN32")
> >
> > C:\_builds\testes>cmake -G"NMake Makefiles" c:\_projects\testes
> > -- :(
> > -- Configuring done
> > -- Generating done
> > -- Build files have been written to: C:/_builds/testes
>
> This is due to an ambiguity in the interface to the IF command left from
> early CMake versions.  Read the documentation for the IF command
> carefully, and keep in mind that "WIN32" is defined as a variable on
> Windows.  Basically the left "WIN32" is getting replaced by "1" before
> comparison.  On non-windows systems or when you use WIN3 the variable is
> not defined.
>
> -Brad

Of course, I completely forgot that WIN32 is defined on windows :)

I was trying to create a macro for Qt when the problem arose:

MACRO(QT_ADD_EXECUTABLE target)
  SET(sources)
  SET(exetype)

  FOREACH(arg ${ARGN})
    IF("${arg}" MATCHES "WIN32")
      SET(exetype WIN32)
    ELSE("${arg}" MATCHES "WIN32")
      SET(sources ${sources} ${arg})
    ENDIF("${arg}" MATCHES "WIN32")
  ENDFOREACH(arg)

  QT_GET_MOCABLE_FILES(moc_list ${sources})
  IF(moc_list)
    QT_MOC_FILES(generated_files ${moc_list})
    SET(sources ${generated_files} ${sources})
  ENDIF(moc_list)

  # Add compiler flags needed by Qt
  STRING(REGEX REPLACE ";" " " defs "${qt_definitions}")
  SET_SOURCE_FILES_PROPERTIES(${sources} PROPERTIES COMPILE_FLAGS 
"-I${QT_INCLUDE_DIR} ${defs}")

  # Create the executable
  ADD_EXECUTABLE(${target} ${exetype} ${sources})
ENDMACRO(QT_ADD_EXECUTABLE)

Is there another way to split "WIN32" from ARGN?

-- 
Filipe Sousa
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