Haiku build failure on Suse 11.2 x86_64

[Grey]

Haiku build failure on Suse 11.2 x86_64, but all ok on Suse 11.1
Log:
# uname -a
Linux linux-4vdj 2.6.31.5-0.1-desktop #1 SMP PREEMPT 2009-10-26

15:49:03 +0100 x86_64 x86_64 x86_64 GNU/Linux

# gcc --version
gcc (SUSE Linux) 4.4.1 [gcc-4_4-branch revision 150839]
# gcc -dumpmachine
x86_64-suse-linux
# gcc -dumpversion
4.4
# jam -v
Jam 2.5. OS=LINUX. Copyright 1993-2002 Christopher Seiwald.
# ./configure --use-32bit --build-cross-tools-gcc4 x86

../buildtools/

...<skip>
binutils and gcc for cross compilation have been built successfully[[BR]] # jam -q haiku-image
...patience...
...<skip>
...patience...
...found 31623 target(s)...
...updating 12081 target(s)...
InitScript1 generated/haiku.image-init-vars
C++ generated/objects/linux/release/build/libroot/atomic.o
In file included from headers/build/config_build/types.h:9,[[BR]]

from headers/build/os/support/SupportDefs.h:12,[[BR]] from headers/build/os/kernel/OS.h:12,[[BR]] from src/build/libroot/atomic.cpp:5:[[BR]]

headers/build/config_build/HaikuConfig.h:53:3: error: #error Unsupported architecture[[BR]] In file included from src/build/libroot/atomic.cpp:5:[[BR]] headers/build/os/kernel/OS.h:588: error: ‘B_MAX_CPU_COUNT’ was not declared in this scope
...<skip>
...failed C++ generated/objects/linux/release/build/libroot/atomic.o ...
...skipped libroot_build.so for lack of <src!build!libroot>atomic.o...
...skipped <build>addattr for lack of libroot_build.so...
...skipped <HaikuImage>haiku.image-init-vars for lack of <build>addattr...
...skipped haiku.image for lack of <HaikuImage>haiku.image-init-vars...
...failed updating 1 target(s)...
...skipped 4 target(s)...
...updated 1 target(s)...
#

IMHO, problems in build/jam/BuildSetup:

if $(HAIKU_HOST_USE_32BIT) = 1 {
 	# enable GCC -m32 option
 	HOST_GCC_BASE_FLAGS = -m32 ;
} else {
	switch $(HOST_GCC_MACHINE) {
		case x86_64-*	: HOST_PLATFORM_IS_64_BIT = 1 ;
		case i686-apple-darwin10	:
			HOST_PLATFORM_IS_64_BIT = 1 ;
	}
 }

Why "else"?

And in headers/build/config_build/HaikuConfig.h
#ifdef INTEL
# ifdef HAIKU_HOST_PLATFORM_64_BIT
...
It look like INTEL undefined.

[axeld]

First of all, you should use Haiku's version of "jam". Does that already help?

BTW, please use {{{ and }}} to indicate preformatted text (the Jamfile quotes). I've updated the description to use it already.