undefined reference to `system_'

[Yuan Sun]

Hi,

When i did the command "./case.build", there is error:

/usr/bin/ld: /tmp/ccM3XvgD.ltrans35.ltrans.o: in function `__tracer_data_MOD_advance_file.lto_priv.0':
<artificial>:(.text+0x3f1b): undefined reference to `system_'
/usr/bin/ld: /tmp/ccM3XvgD.ltrans103.ltrans.o: in function `__shr_file_mod_MOD_shr_file_get.constprop.0':
<artificial>:(.text+0x1a9a): undefined reference to `system_'
collect2: error: ld returned 1 exit status

I don't know what's wrong with it and need help, please....