Tim,

thank you.

Compiler and environment specific things become defined during "project" 
command execution.
It is too late to check if it is set afterwards because it actually IS SET.

I assume you are lucky and default value for CMAKE_Fortran_FLAGS_RELEASE is
empty, isn't it?

So the tricky point is to place customization code in proper place.

In my case 
==
set(CMAKE_CXX_FLAGS_DEBUG  "-g -wall"
  CACHE
  STRING "" 
  )
==
works perfectly if put at the top of CMakeLists.txt


28.04.2011, 19:23, "Tim Gallagher" <[email protected]>:
> We do this:
>
> if(NOT CMAKE_Fortran_FLAGS_RELEASE)
>    set(CMAKE_Fortran_FLAGS_RELEASE "-O2 -xhost" CACHE STRING "" FORCE)
> endif()
>
> In other words, if the flags haven't been set yet (initial start up), set 
> them to what we want. If they have been set (either changed by the user, or 
> specified on the cmake/ccmake line with -D), leave them alone.
>
> Tim
>
> ----- Original Message -----
> From: "Ilja Golshtein" <[email protected]>;
> To: [email protected]
> Sent: Thursday, April 28, 2011 9:03:43 AM
> Subject: [CMake] Change variable default
>
> Hello!
>
> There are some CMAKE variables with default values. For example 
> CMAKE_CXX_FLAGS_DEBUG default value is '-g'.
> How is it possible to make it '-g -Wall'?
>
> What I don't want to have: User choice overwritten.
>
> What I want to have: Modified a variable cmake-time default. It must be 
> possible to change the variable via cmake -D or ccmake GUI.
>
> Thanks.
>
> --
> Best regards,
> Ilja Golshtein.
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-- 
Best regards,
Ilja Golshtein.
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