[CMake] autoheader

[Hendrik Sattler]

Am Montag 30 März 2009 17:58:47 schrieb Bill Hoffman:
> So, what would the API be?  I am thinking something that you just give a
> list of variables and a file name.
>
> set(VARS HAS_A HAS_B HAS_C)
> set(STRING_VARS STRING_A STRING_B)
> cmake_autoheader(CMAKEDEFINE_VARS ${VARS}
>                   STRING_VARS ${STRING_VARS}
>                   HEADER config.h.in)
>
>
> This would create:
> config.h.in
> #cmakedefine HAS_A
> #cmakedefine HAS_B
> #cmakedefine HAS_C
> #define STRING_A "@STRING_A@"
> #define STRING_B "@STRING_B@"
>
>
> I think you could do this pretty easily in a function, and a command
> would not be needed.   Anyway, does the API look good?

Why do you want to create a config.h.in like that? autoheader is a two-step 
thing and both steps can be done during _one_ cmake run. There is no sense in 
creating config.h.in just to use configure_file() on it the next moment.

create_configuration_header (config.h
  LANGUAGE C
  TYPE INTEGER   ${INTEGER_VARIABLE_NAME_LIST}
  TYPE BOOLEAN ${BOOLEAN_VARIABLE_NAME_LIST}
  TYPE STRING     ${STRING_VARIABLE_NAME_LIST}
}

That should create config.h like for C:
/* add some boolean include stuff here */
#define INTEGER_X  1234L
#define BOOL_B true
#define STRING_S  "hello world"

HS