Conditional Compilation

Conditional Compilation

[Raghu]

Hi, 

I want to have a macro define through which I will be
able to conditionally compile either REDBOOT or ecos
library. 

Example: 
#ifdef CYGBLD_TARGET_REDBOOT
#include <redboot.h>
#include <net/net.h>
#else
#include <pkgconf/net.h>
#endif

How should I define this in the ".cdl" file ? I tried 
cdd_option CYGBLD_TARGET_REDBOOT {
    default_value 0
}
and in redboot_rom.ecm set the user_value to "1".
But this does not define "#define
CYGBLD_TARGET_REDBOOT" and the compilation fails for
file not found.
Regards
Raghu


    




		
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Re: Conditional Compilation

[Andrew Lunn]

On Mon, Mar 21, 2005 at 09:12:33PM -0800, Raghu wrote:
> Hi, 
> 
> I want to have a macro define through which I will be
> able to conditionally compile either REDBOOT or ecos
> library. 

#include <pkgconf/system.h>
#ifdef CYGPKG_REDBOOT
#include <redboot.h>
#include <net/net.h>
#else
#include <pkgconf/net.h>
#endif

        Andrew

Re: Conditional compilation

[Bart Veer]

>>>>> "Gary" == Gary Thomas <gary@mlbassoc.com> writes:

    Gary> I have a device which can be configured one of two ways. I
    Gary> need a separate driver file (this is for MicroWindows,
    Gary> trying to decide between a mouse and a touch screen). Is
    Gary> there a better way to handle this than how I've done it?

    Gary>         cdl_component CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER {
    Gary>             display        "Mouse selection"
    Gary>             legal_values   { "pc" "ms" "logi" "ps2" "ts" }
    Gary>             default_value  { "logi" }
    Gary>             cdl_option CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER_MOUSE {
    Gary>                description   "Use mouse on PS/2 port"
    Gary>                calculated    { CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER != "ts" }
    Gary>                no_define
    Gary>                compile       drivers/mou_ser.c
    Gary>             }
    Gary>             cdl_option CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER_TOUCH {
    Gary>                description   "Use touch screen for mouse"
    Gary>                calculated    { CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER == "ts" }
    Gary>                no_define
    Gary>                compile       drivers/mou_prot732ts.c
    Gary>             }
    Gary>         }

That approach is fine. The alternative is to always compile both files
and have #ifdef's around the bulk of the code. Anything more advanced
would probably require a new CDL property "compile_if <expr> <sources>"

Bart

Conditional compilation

[Gary Thomas]

I have a device which can be configured one of two ways.  I need a
separate driver file (this is for MicroWindows, trying to decide
between a mouse and a touch screen).  Is there a better way to handle
this than how I've done it?

        cdl_component CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER {
            display        "Mouse selection"
            legal_values   { "pc" "ms" "logi" "ps2" "ts" }
            default_value  { "logi" }
            cdl_option CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER_MOUSE {
               description   "Use mouse on PS/2 port"
               calculated    { CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER != "ts" }
               no_define
               compile       drivers/mou_ser.c
            }
            cdl_option CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER_TOUCH {
               description   "Use touch screen for mouse"
               calculated    { CYGBLD_MICROWINDOWS_PROT732_MOUSE_DRIVER == "ts" }
               no_define
               compile       drivers/mou_prot732ts.c
            }
        }

-- 
Gary Thomas <gary@mlbassoc.com>
MLB Associates