add gr-nacl recipe

[stwunsch]

Libsodium dependency not included in recipe (needs to be compiled and installed by hand, is not available via package manager), installation is fully explained in gr-nacl/README.md

[jmcorgan]

Pybombs can automate building libsodium; it looks like it uses autoconf.

[stwunsch]

Ok thanks, I have not seen that. But I think I have fixed it. It builds fine on my system.

But probably the cmake module for finding libsodium in gr-nacl is a little bit messy. ->
https://github.com/stwunsch/gr-nacl/blob/master/cmake/Modules/FindSodium.cmake

If the folder structure in pybombs does not change, this should work. Unfortunately I can't use the pkg-config in the FindModule (if I understand this cmake stuff right) and I don't know a better solution for this.

[jmcorgan]

What I mean is, you can create a recipe for libsodium and list that as a dependency for gr-nacl. Pybombs will then be able to download, compile from source, and install libsodium into $PREFIX. Then your gr-nacl CMake script can find the header and .so file the usual way.

[stwunsch]

What I mean is, you can create a recipe for libsodium and list that as a dependency for gr-nacl. Pybombs will then be able to download, compile from source, and install libsodium into $PREFIX.

This is done (see second commit). I have created a libsodium recipe and put it as dependency in gr-nacl. Download, compile and install in $PREFIX works.

Then your gr-nacl CMake script can find the header and .so file the usual way.

What do you mean with this? What is the 'usual way' to find a package if it is not installed with the package management and therefore can not be found by pkg-config?

[mbr0wn]

CMake has its own routines for finding libs and header files.

[stwunsch]

Ok sry, finally I got it. New generic FindModule ->

https://github.com/stwunsch/gr-nacl/blob/master/cmake/Modules/FindSodium.cmake

I missed that libsodium ships a libsodium.pc file with its installation and the target in pybombs has an own pkgconfig folder so that I don't have to search the library with hard-coded or default paths.

From my side the problem is fixed.

[jmcorgan]

Just FYI--I'm using this recipe for installation of libsodium and gr-nacl in the automated build of the livesdr snapshot image, and it is working fine.