>From elfutils nm ... % nm -pg morestack.o Symbols from morestack.o: Name Value Class Type Size Line Section __morestack |0000000000000037|GLOBAL|FUNC |00000000000000e5| |.text __gcc_personality_v0 ||GLOBAL|NOTYPE || |UNDEF __morestack_block_signals ||GLOBAL|NOTYPE || |UNDEF __generic_morestack ||GLOBAL|NOTYPE || |UNDEF __morestack_unblock_signals ||GLOBAL|NOTYPE || |UNDEF __generic_releasestack ||GLOBAL|NOTYPE || |UNDEF __generic_findstack ||GLOBAL|NOTYPE || |UNDEF _Unwind_Resume ||GLOBAL|NOTYPE || |UNDEF __morestack_large_model |000000000000011c|GLOBAL|FUNC |0000000000000010| |.text __stack_split_initialize |000000000000012c|GLOBAL|FUNC |0000000000000021| |.text __generic_morestack_set_initial_sp||GLOBAL|NOTYPE || |UNDEF __morestack_get_guard |000000000000014d|GLOBAL|FUNC |000000000000000a| |.text __morestack_set_guard |0000000000000157|GLOBAL|FUNC |000000000000000a| |.text __morestack_make_guard |0000000000000161|GLOBAL|FUNC |000000000000000e| |.text __morestack_load_mmap ||GLOBAL|NOTYPE || |UNDEF >From binutils nm ... % /usr/bin/nm -pg morestack.o 0000000000000000 T __morestack_non_split 0000000000000037 T __morestack U __gcc_personality_v0 U __morestack_block_signals U __generic_morestack U __morestack_unblock_signals U __generic_releasestack U __generic_findstack U _Unwind_Resume 000000000000011c T __morestack_large_model 000000000000012c T __stack_split_initialize U __generic_morestack_set_initial_sp 000000000000014d T __morestack_get_guard 0000000000000157 T __morestack_set_guard 0000000000000161 T __morestack_make_guard U __morestack_load_mmap Noticed from your earlier mail, that you mentioned "-p" for portability, but the help seems to indicate as "-P". So adding the outputs ith -Pg here ... elfutils nm ... % nm -Pg morestack.o _Unwind_Resume U 0000000000000000 0000000000000000 __gcc_personality_v0 U 0000000000000000 0000000000000000 __generic_findstack U 0000000000000000 0000000000000000 __generic_morestack U 0000000000000000 0000000000000000 __generic_morestack_set_initial_sp U 0000000000000000 0000000000000000 __generic_releasestack U 0000000000000000 0000000000000000 __morestack T 0000000000000037 00000000000000e5 __morestack_block_signals U 0000000000000000 0000000000000000 __morestack_get_guard T 000000000000014d 000000000000000a __morestack_large_model T 000000000000011c 0000000000000010 __morestack_load_mmap U 0000000000000000 0000000000000000 __morestack_make_guard T 0000000000000161 000000000000000e __morestack_non_split T 0000000000000000 0000000000000037 __morestack_set_guard T 0000000000000157 000000000000000a __morestack_unblock_signals U 0000000000000000 0000000000000000 __stack_split_initialize T 000000000000012c 0000000000000021 binutils nm ... % /usr/bin/nm -Pg morestack.o _Unwind_Resume U __gcc_personality_v0 U __generic_findstack U __generic_morestack U __generic_morestack_set_initial_sp U __generic_releasestack U __morestack T 0000000000000037 00000000000000e5 __morestack_block_signals U __morestack_get_guard T 000000000000014d 000000000000000a __morestack_large_model T 000000000000011c 0000000000000010 __morestack_load_mmap U __morestack_make_guard T 0000000000000161 000000000000000e __morestack_non_split T 0000000000000000 0000000000000037 __morestack_set_guard T 0000000000000157 000000000000000a __morestack_unblock_signals U __stack_split_initialize T 000000000000012c 0000000000000021 -Kalai