Am Sonntag, 13. April 2014, 09:59:03 schrieb Jiri Malak:
> >> I enclosed patch for removing placeholder "x" from STREQUAL operands.
> >> It does comparision transparent.
> >
> > I very much would like to see that, but there is a problem: CMake may
> > interpret the operands of STREQUAL both as text and as variable name.
> >
> > So this does what you expect for the moment:
> >
> > if (${CMAKE_SYSTEM_NAME} STREQUAL Linux) ...
> >
> > But now you will get into trouble:
> >
> > set(Linux Windows)
> >
> > Sadly the expression is even expanded when it is quoted as long as it is a
> > valid variable name.
^^^> Sorry, I am new for CMake script. > Is it also true for quoted operands? Yes. One other way to solve this: if you are sure both expressions are indeed variables you may simply write "if (foo STREQUAL bar)": the expression will always be expanded and you don't need any quoting. This is why e.g. things like CMAKE_* are rarely quoted or expanded by hand in such an expression, it is known that they will be a variable and will be expanded. Eike
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