Re: bsd.lib.mk question

[David Laight <david%l8s.co.uk@localhost>]

On Mon, Jun 06, 2011 at 12:58:53AM +0000, David Holland wrote:
> Does anyone know why bsd.lib.mk contains the following logic?
> 
>    _YLSRCS=        ${SRCS:M*.[ly]:C/\..$/.c/} ${YHEADER:D${SRCS:M*.y:.y=.h}}
>       :
>    DPSRCS+=        ${_YLSRCS}
>       :
>    ${STOBJS} ${POBJS} ${GOBJS} ${SOBJS} ${LOBJS}: ${DPSRCS}
> 
> It appears that this forces a complete recompile any time a .l or .y
> file is touched, which seems entirely wrong.

Might be to ensure anything that depends on the generated .h file
is recompiled - working around the fact that make has no syntax
for having one set of commands generate 2 files.

        David

-- 
David Laight: david%l8s.co.uk@localhost