libpixman build fails (macports 2.0.0)

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$ port upgrade outdated
--->  Building libpixman
Error: Target org.macports.build returned: shell command failed (see log for details)
Log for libpixman is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_libpixman/libpixman/main.log
Error: Unable to upgrade port: 1
To report a bug, see <http://guide.macports.org/#project.tickets>

here the log:

-+-+-+-+-+-+-+-+-+-+-+-+-+------

:info:build /bin/sh ../libtool --silent --tag=CC   --mode=compile /Developer/usr/bin/clang -DHAVE_CONFIG_H -I. -I..   -I/opt/local/include  -O2 -arch i386 -Wall -fno-strict-aliasing -fvisibility=hidden -D_REENTRANT -c -o pixman-region32.lo pixman-region32.c
:info:build pixman-cpu.c:492:10: error: invalid operand for instruction
:info:build                 "       push %%ebx\n"
:info:build                 ^
:info:build <inline asm>:2:19: note: instantiated into assembly here
:info:build         mov $0x80000000, %eax
:info:build                          ^
:info:build pixman-cpu.c:492:10: error: invalid operand for instruction
:info:build                 "       push %%ebx\n"
:info:build                 ^
:info:build <inline asm>:7:19: note: instantiated into assembly here
:info:build         mov $0x80000001, %eax
:info:build                          ^
:info:build 2 errors generated.
:info:build make[3]: *** [pixman-cpu.lo] Error 1

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build log