error: main.c: No such file or directory

[ingo-h]

I followed exactly your instructions to build on Linux but get an error message:

$ sudo apt install libupnp-dev
$ mkdir build
$ gcc main.c -o build/libupnp_example -lupnp
gcc: error: main.c: No such file or directory

What to do?

[Zapunidi]

Check your current working directory and/or file listing:

> pwd
/path/to/repository/libupnp_example
> ls
build  CMakeLists.txt  doc  LICENSE  main.c  README.md  tools

It should be the root of the libupnp_example repository. You need to run gcc from there.