Hi,
besides the Ubuntu breakage, commit 4000 brought a couple of interesting warnings that were not available before, such as those about the shadowing of variables. This happens when a global variable is "overwritten" with a local definition so that the global version is no longer available in that scope, such as this one:
coreboot-v2-4017/src/arch/i386/boot/multiboot.c: In function 'write_multiboot_info': coreboot-v2-4017/src/arch/i386/boot/multiboot.c:81: warning: declaration of 'mbi' shadows a global declaration coreboot-v2-4017/src/arch/i386/boot/multiboot.c:27: warning: shadowed declaration is here
If you see these warnings in your builds, please attempt to fix them as they might mean that your code is accessing the wrong variables..
Stefan