[Buildroot] Searching for the right "make clean"

[Buildroot] Searching for the right "make clean"

[Dan Lyke]

Silly question:

I'm using buildroot for an AT91SAM9261, and was getting some floating
point behavior I didn't understand, so rather than be all smart about
it I decided to force software floating point and rebuild my toolchain.

Simply checking that box under "Toolchain" in the "make menuconfig",
followed by "make clean; make" failed with errors that things were
compiled with hardware floating point, so I grepped the Makefile for
"clean", tried "make dirclean", that failed, and then did a "make
distclean" which blew away more than I wanted to.

What's the right "clean" for me to have typed?

Thanks.

Dan

[Buildroot] Searching for the right "make clean"

[Ulf Samuelsson]

ons 2009-01-14 klockan 08:42 -0800 skrev Dan Lyke:
> Silly question:
> 
> I'm using buildroot for an AT91SAM9261, and was getting some floating
> point behavior I didn't understand, so rather than be all smart about
> it I decided to force software floating point and rebuild my toolchain.
> 
> Simply checking that box under "Toolchain" in the "make menuconfig",
> followed by "make clean; make" failed with errors that things were
> compiled with hardware floating point, so I grepped the Makefile for
> "clean", tried "make dirclean", that failed, and then did a "make
> distclean" which blew away more than I wanted to.
> 
> What's the right "clean" for me to have typed?


Once you change a toolchain option, you should probably 
remove everything and start afresh.

THere is nothing you need to save except the configs
which you can do with make saveconfig.


I.E: rm:
	binaries
	build_ARCH
	toolchain_build_ARCH
	project_build_ARCH

BR
Ulf Samuelsson

> 
> Thanks.
> 
> Dan
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

[Buildroot] Searching for the right "make clean"

[Sven Neumann]

Hi,

On Thu, 2009-01-15 at 23:27 +0100, Ulf Samuelsson wrote:

> Once you change a toolchain option, you should probably 
> remove everything and start afresh.
> 
> THere is nothing you need to save except the configs
> which you can do with make saveconfig.
> 
> 
> I.E: rm:
> 	binaries
> 	build_ARCH
> 	toolchain_build_ARCH
> 	project_build_ARCH

It would help a lot if there was a dedicated make target for this.

We have has this problem several times now. Whenever we change a
configuration in the toolchain or in uclibc, everything needs to be
rebuilt. Unfortunately the Makefile does not automatically care about
this dependency. So one has make sure that the tree is clean before
running the build again. If there was a target that would take care of
this, that would help a lot.


Sven