Forum Post: no input section linked in with CCS 5.5, MATHLIB & ELF

I followed the instructions of SLAU499 to add mathlib feature into project, but get linked error : "no input section linked in".  And this wiki post don't solved my  problems. http://processors.wiki.ti.com/index.php/Compiler/diagnostic_messages/10198.

Tool : CCS v5.5, Compiler 4.2.1

Output format :  ELF

Run time Library : Automatic

Target :　ＭＳＰ４３０Ｆ５５２９

The purpose to add mathlib is for sin, cos, atan2 ... floating calculation, hope there are answers for it...