Fwd: [CMake] Deleting a variable

[Tristan Carel]

...

---------- Forwarded message ----------
From: Tristan Carel <tristan.carel at gmail.com>
Date: Dec 5, 2006 4:12 PM
Subject: Re: [CMake] Deleting a variable
To: James Bigler <bigler at cs.utah.edu>


On 12/5/06, James Bigler <bigler at cs.utah.edu> wrote:
>  > Message: 8
>  > Date: Tue, 05 Dec 2006 00:48:31 -0800
>  > From: "Brandon J. Van Every" <bvanevery at gmail.com>
>  > Subject: Re: [CMake] Deleting a variable
>  > To: cmake <cmake at cmake.org>
>  > Message-ID: <4575325F.6000908 at gmail.com>
>  > Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>  >
>  > James Bigler wrote:
>  > > >
>  > > > I want the variable to disappear from the list when running ccmake.
>  > > > This didn't seem to do anything.
>  >
>  > How about SET(myvar CACHE INTERNAL "Don't show this")
>  > See the docs for SET.
>
> This "hides" it (which I could live with), but when I enable the feature
> that selectively calls this code, FIND_PROGRAM doesn't run again and
> "myvar" is junk.
> [....]

In the documentation of the FIND_XXX commands, you can read:
"If nothing is found, the result will be <VAR>-NOTFOUND, and the
search will be attempted again the next time FIND_XXX is invoked with
the same variable."

So to force the FIND_XXX:

FIND_PROGRAM(Foo ...)
SET(Foo        Foo-NOTFOUND)

A recent history of the same pb:
http://www.cmake.org/pipermail/cmake/2006-November/011804.html

--
Tristan Carel
Music with dinner is an insult both to the cook and the violinist.