试图将一个测试程序链接到一个库中，得到错误:iostream:没有这样的文件或目录。

I'm trying to create a c++ library for the purpose of controlling a signal generator. I have a working script that compiles into an executable that runs the way I want, and now I want to create a static library with a 'signal' class such that the code can be integrated into a larger library being created by the research collaboration I'm part of for all the hardware we have. However, I'm having trouble compiling a test program (test.cc) for the signal.cpp source code and signal.h that I've written. I'm trying to create a c++ library for the purp