Hello everybody,

I just checked in some incisive changes to the U-Boot build environ- ment. The new build scheme is based on the linux 2.6 kernel approach and supports two options when building u-boot objects to some external directory.

1) Add O= to the make command line, e.g. 'make O=/tmp/build all'

2) Set environment variable BUILD_DIR and use regular 'make all'

Command line 'O=' setting overrides BUILD_DIR environment variable.

Tests included building all targets and comparing the results to those produced by a build on a baseline tree. Modifications were tested in a more detailed way for 16 targets, 5 of which were also loaded and tested on a target board.

Problems found (and fixed):

*) tools/easylogo - that is a standalone build, but we fixed easylogo.c build error.

*) tools/Makefile.win32 - we left this file untouched as we do not have a way of testing it, and also it seems to be a standalone Makefile.

*) .depend target was moved to to a separate file rules.mk, that is now included when needed.

*) We added few targets like env, gdbtools and updater to the main Makefile, that creates a more convenient way of building tools subdirectories.

*) tools/env - Makefile modified but builds only on target.

*) updater - fixed build errors in: tools/updater/flash.c tools/updater/update.c

*) We extended support for a LOG directory, which now can be located outside of the source tree. To use something different than the default 'LOG' directory MAKEALL_LOGDIR environment variable can be set to point to the other location.

*) not integrated with u-boot build and left untouched: ./cpu/mpc824x/drivers/i2o/Makefile - Motorola Makefile ./cpu/mpc824x/drivers/dma/Makefile - Motorola Makefile

*) board/netstar/crcit binary was removed from the tree and added to the clean target.

*) Some targets were broken and required more attention, those which currently do not compile are:

ppc) AmigaOne3GSE

arm) ixdp425 ixdpg425 pdnb3 The above targets do not compile due to problems when building cpu/ixp/npe/libnpe.a, because of missing `IxNpeMicrocode.c' source file (unsolved licensing issues).

omap2420h4 pxa255_idp

coldfire) Coldfire builds were broken. We investigated this and found that it's caused by by the following commit:

Commit: 9acb626fc145e7327f94fd77f927dce08dd978a8 Author: Heiko Schocher hs@pollux.denx.de czw, 20 kwi 2006 08:42:42 +0200

Add MCF5282 support (without preloader) relocate ichache_State to ram u-boot can run from internal flash Add EB+MCF-EV123 board support. Add m68k Boards to MAKEALL Patch from Jens Scharsig, 08 Aug 2005

We fixed the build problems to be able verify our modifications but we are not able to test them.

This is a request to all board maintainers to help testing the new code, resp. to fix the remaining problems (especially for the abovementioned boards which are broken right now).

Thanks in advance.

Best regards,

Wolfgang Denk