clang LSB build

Hi!

Has anybody tried to build clang with the LSB SDK (4.1)?

I configured these environment variables:
export CC="/opt/lsb/bin/lsbcc --lsb-target-version=4.0"
export CFLAGS="-I/opt/lsb/include"
export LDFLAGS="-L/opt/lsb/lib -Wl,–dynamic-linker=/lib/ld-lsb.so.3"
export CXX="/opt/lsb/bin/lsbc++ --lsb-target-version=4.0"
export CXXFLAGS="-I/opt/lsb/include -I/opt/lsb/include/c++"
export CPP="/opt/lsb/bin/lsbcpp"

Configure runs fine.
…/llvm-3.4/configure --enable-optimized

But if I try to build it I got a lot of warnings:
llvm-3.4/include/llvm/Support/MathExtras.h:612:3: warning: floating constant exceeds range of ‘float’ [-Woverflow]

The build stops with this error:
In file included from /llvm-3.4/lib/Support/Path.cpp:1035:0:
/llvm-3.4/lib/Support/Unix/Path.inc:540:2: error: #error Missing futimes() and futimens()
/bin/rm: cannot remove `/build/lib/Support/Release+Asserts/Path.d.tmp’: No such file or directory
make[1]: *** [/build/lib/Support/Release+Asserts/Path.o] Error 1
make[1]: Leaving directory /build/lib/Support’
make: *** [all] Error 1

I try to build it on Ubuntu 12.04, 32bit
Linux 3.2.0-58-generic #88-Ubuntu SMP Tue Dec 3 17:40:43 UTC 2013 i686 i686 i386 GNU/Linux

lsbc++ --version
lsbc++ (lsbcc) 4.1.27
c++ (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

gcc --version
gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

If I use only gcc and g++ I can build clang, I got these warnings and error only with the lsb sdk.

Do you have any ideas what am I missing?

Thanks,

Gyorgy

Targeting the LSB 4.0 series isn't going to work if you need
futimes, futimens, as those are not added until LSB 5.0 ...
presently in the last rounds of its beta. Reports welcomed

We would be delighted to have you join us as a subscriber on
the mailing list,
  http://lists.linuxfoundation.org/pipermail/lsb-discuss/

which of course also has the customary link for subscription
interface

and to file bugs in our tracker at:
  https://lsbbugs.linuxfoundation.org/

-- Russ herrold