Bare configuration problem --enable-bare-cpu-cflags

[Ralf Corsepius]

Am Mon, 2003-04-07 um 20.35 schrieb Stephen Holford: 
> Hi
> 
> I've just noticed a problem with rtems-4.6.0pre that 
> --enable-bare-cpu-cflags no longer seems to work. The flags get parsed 
> and appear in BARE_CPU_CFLAGS, but the assignment 
> CPU_CFLAGS=$(BARE_CPU_CFLAGS) in bare.cfg doesn't seem to work. I can 
> hard code "CPU_CFLAGS=-O2 blah blah" in bare.cfg and that does work.
> 
> As a work around I have found that using the CFLAGS_FOR_TARGET 
> environment variable before ./configure does allow me to pass the flags 
> I need to build correctly. Is this now the preferred way to pass in 
> CFLAGS to the build process rather than --enable-bare-cpu-cflags?

Difficult to answer. The situation currently is as follows:

Initially, --enable-bare-* have been added as a band-aid to work-around
RTEMS's configuration not having been able to process *FLAGS for
individual BSPs.

Meanwhile, support for CFLAGS_FOR_TARGET has been introduced. However
support for *_FOR_TARGET is still pretty new and probably immature.

Therefore, --enable-bare-* had not yet officially been depredicated,
obsoleted nor removed. 

Nevertheless, in longer terms, --enable-bare-* probably will be removed
in favor of *_FOR_TARGET.

=> At present time, --enable-bare-* not being functional qualifies as a
bug.

Ralf