how to test whether an interface is defined？

[ljm0451]

Thanks advance
I'm a newer.
for example, I want to test whether my current libc provides the hello_world() interface.

I think the macro TEST in gtest can not do this. The reason is that if there is no hello_world() interface, gtest will compile error. I want to receive a PASS or not PASS, rather than a compile/link error.

what should I do?
-----------------------------------------------------------------------update 2021年4月25日13:21:10
I want to use gtest to test the posix interface, just like using "open posix test suite" . (For example, if OS/glibc does not support a certain interface, it should tell the user "not supported" or "not passed" instead of compiling/linking errors)

[XuhuaHuang]

Before jumping into macro TEST, have you tried with a try-catch block?