Remove setjmp.S in tiva/Make.defs
It makes build error.
Assembler messages: common/setjmp.S:155: Error: r13 not allowed here
HEAD_ASRC = tiva_vectors.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
-CMN_ASRCS += vfork.S setjmp.S
+CMN_ASRCS += vfork.S
CMN_CSRCS = up_assert.c up_blocktask.c up_copyfullstate.c up_createstack.c
CMN_CSRCS += up_mdelay.c up_udelay.c up_exit.c up_idle.c up_initialize.c
