FTBFS: invalid use of undefined type [sparc]

[LaMont Jones]

Binary package hint: strace

gcc -DHAVE_CONFIG_H -I. -I.. -Ilinux/sparc -I../linux/sparc -Ilinux -I../linux -Wall -g -O2 -MT syscall.o -MD -MP -MF .deps/syscall.Tpo -c -o syscall.o ../syscall.c
../syscall.c: In function 'get_scno':
../syscall.c:1168: error: invalid use of undefined type 'struct regs'
../syscall.c:1210: error: invalid use of undefined type 'struct regs'
../syscall.c:1210: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long unsigned int'
../syscall.c:1219: error: invalid use of undefined type 'struct regs'
../syscall.c:1221: error: invalid use of undefined type 'struct regs'
../syscall.c:1222: error: invalid use of undefined type 'struct regs'
../syscall.c:1222: error: invalid use of undefined type 'struct regs'
../syscall.c:1222: error: invalid use of undefined type 'struct regs'
../syscall.c: In function 'syscall_fixup':
../syscall.c:1337: warning: unused variable 'pid'
../syscall.c: In function 'get_error':
../syscall.c:1602: error: invalid use of undefined type 'struct regs'
../syscall.c:1604: error: invalid use of undefined type 'struct regs'
../syscall.c:1607: error: invalid use of undefined type 'struct regs'
...