make -C seabios-dir all
make[6]: Entering directory '/home/SOURCES/xen/xen.git/tools/firmware/seabios-dir-remote'
  Compile checking out/src/stacks.o
src/stacks.c: Assembler messages:
src/stacks.c:567: Error: found `(', expected: `)'
src/stacks.c:567: Error: junk `(%ebp))' after expression
src/stacks.c:568: Warning: indirect call without `*'
Makefile:133: recipe for target 'out/src/stacks.o' failed
make[6]: *** [out/src/stacks.o] Error 1
make[6]: Leaving directory '/home/SOURCES/xen/xen.git/tools/firmware/seabios-dir-remote'
/home/SOURCES/xen/xen.git/tools/firmware/../../tools/Rules.mk:218: recipe for target 'subdir-all-seabios-dir' failed