Supporting custom-spec.gmk

[David Holmes]

Hi Jeremy,

On 3/10/2013 10:20 AM, Jeremy Manson wrote:
> I note that the bottom of spec.gmk.in has this nugget:
>
> # Include the custom-spec.gmk file if it exists
> -include $(dir @SPEC@)/custom-spec.gmk
>
> There is no support in the configuration file to make sure that this file
> exists in the build directory.  Any support for something like the
> following patch?

The whole point here is that there may or may not be a custom-spec.gmk 
present, but if there is then we include it. We don't mandate how that 
file gets created so the existence, or not, of a custom-spec.gmk.in 
doesn't tell you anything. Plus you also have to know where to look for 
the .in file - which need not be AUTOCONF_DIR.

David
-----

>
> diff -r 0cc21882d2f6 common/autoconf/basics.m4
> --- a/common/autoconf/basics.m4 Thu Sep 26 10:43:04 2013 -0700
> +++ b/common/autoconf/basics.m4 Wed Oct 02 17:19:33 2013 -0700
> @@ -457,6 +457,10 @@
>   AC_CONFIG_HEADERS([$OUTPUT_ROOT/config.h:$AUTOCONF_DIR/config.h.in])
>   # The spec.gmk file contains all variables for the make system.
>   AC_CONFIG_FILES([$OUTPUT_ROOT/spec.gmk:$AUTOCONF_DIR/spec.gmk.in])
> +# The custom-spec.gmk file is an optional file that contains user-specific
> config
> +if test -e $AUTOCONF_DIR/custom-spec.gmk.in; then
> +  AC_CONFIG_FILES([$OUTPUT_ROOT/custom-spec.gmk:$AUTOCONF_DIR/
> custom-spec.gmk.in])
> +fi
>   # The hotspot-spec.gmk file contains legacy variables for the hotspot make
> system.
>   AC_CONFIG_FILES([$OUTPUT_ROOT/hotspot-spec.gmk:$AUTOCONF_DIR/
> hotspot-spec.gmk.in])
>   # The bootcycle-spec.gmk file contains support for boot cycle builds.
>