cgo sample

This sample demonstrates the experimental cgo support.

The sample can be built and run as follows:

sudo apt install zlib1g-dev
ego-go build
ego sign cgo
ego run cgo

Make sure that you link libraries statically, e.g., use -l:libz.a instead of -lz. However, libc must be linked dynamically.

You can check with ldd:

$ ldd cgo
linux-vdso.so.1
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6
/lib64/ld-linux-x86-64.so.2

Here we only have libc and friends, so this is fine.