Install

Add the library

corral add github.com/d-led/otp_pony_node.git --version 0.7.2
corral fetch

Corral puts the dependency in _corral/github_com_d_led_otp_pony_node; both _corral and _repos belong in your .gitignore.

Build the native part

The library wraps OTP's ei in a small C shim. Corral fetches Pony sources and runs no build script, so the shim is built once, by hand:

make -C _corral/github_com_d_led_otp_pony_node

That writes libotp_pony_node_c.a beside the package: one archive with ei inside it, so the compiled program reads no library at run time. CMake and the Erlang installation are needed for that step and not after it.

Dependencies

Erlang/OTP with erl_interface, which provides ei.h and the static archive libei.a. Erlang/OTP ships both together; a distribution that splits it puts them in the erl_interface development package.

The build reads include/ei.h and lib/libei.a out of the installation that erl on your PATH reports, and -DOPN_EI_DIR=<dir> overrides that.

Use it

use "erl_interface_pony"

That is the whole import. The package names the native archive itself and corral run -- ponyc puts the dependency on the compiler's search path.

Compiling without corral means passing that directory yourself:

ponyc -p path/to/otp_pony_node