Build not finding Libwally

[nharmon9]

ld: warning: directory not found for option '-L./bld/lib'
          ld: library not found for -lwallycore
          clang: error: linker command failed with exit code 1 (use -v to see invocation)

[nharmon9]

I manually created the bld/lib directory and now it is having trouble finding secp256k1

|Message: --- Failed to run command (stderr) ---
|Message: configure.ac:10: installing 'build-aux/compile'
|configure.ac:9: installing 'build-aux/missing'
|Makefile.am: installing 'build-aux/depcomp'
|configure.ac:28: installing 'tools/build-aux/compile'
|configure.ac:7: installing 'tools/build-aux/config.guess'
|configure.ac:7: installing 'tools/build-aux/config.sub'
|configure.ac:27: installing 'tools/build-aux/install-sh'
|configure.ac:27: installing 'tools/build-aux/missing'
|src/Makefile.am: installing 'tools/build-aux/depcomp'
|parallel-tests: installing 'tools/build-aux/test-driver'
|configure: WARNING: using cross tools not prefixed with host triplet
|make[1]: /Applications/Android: No such file or directory
|make[1]: *** [swig_java/src/com/blockstream/libwally/Wally.class] Error 1
|make: *** [all-recursive] Error 1
|

subprojects/libwally-core-dbb5e11a76fc4e09ad6381ce695f740bc536ed9b/meson.build:33:0: ERROR: C library 'secp256k1' not found

[jb55]

btw there is a much newer version of this library, integrated directly into gdk at https://github.com/jb55/gdk/tree/gdk-rpc

It has fullnode support for sending/receiving, viewing balances and transactions.

I plan on someday moving the fullnode parts out of gdk and gdk-rpc so that they are a standalone library, but perhaps someone else could take a stab at that until then :)

[nharmon9]

Hey @jb55 is it possible to use with an elements regtest node?

[jb55]

Hey @jb55 is it possible to use with an elements regtest node?

We only have bitcoin regtest set up for now. This is mainly for testing electrum on the jb55/gdk-electrum branch. We've moved on to supporting both electrum and rpc, with the focus on electrum for now. In the next few weeks we'll be looking into elements regtest, but it should be able to support testing rpc as well when we get back to that.

[nharmon9]

The elements electrum server is electrs?

[jb55]

yes, but blockstream's fork: https://github.com/Blockstream/electrs

[nharmon9]

Right. I have that running with my elements regtest. Does the gdk-electrum branch work with an elements regtest?

[nharmon9]

Oh I see there is an elements-regtest network-param in there.

[jb55]

like I mentioned, we haven't got there yet, but its something we're going to need soon. check out tests/{test-runner,test_rust.cpp} to see progress on that front, since we're going to eventually test all configurations with that: {rpc,electrum} x {liquid, bitcoin} x {regtest, testnet}

oh and to fix your original issue, you just need this build.rs, and then set WALLY_DIR to the build-clang/libwally-core/build/lib/ dir. This is already on the gdk-electrum branch

// build.rs

use std::env;

fn main() {
    if let Ok(wally_dir) = env::var("WALLY_DIR") {
        println!("cargo:rustc-link-lib=static=wallycore");
        println!("cargo:rustc-link-lib=static=secp256k1");
        println!("cargo:rustc-link-search=native={}", wally_dir);
    }
}

[nharmon9]

Cool thanks maybe I can help with this. I have been helping test NBitcoin and NBXplorer with elements. So I will take a look and try to catch up. You're a champ

[jb55]

It might be a good thing to test against different electrum servers, does your NBXplorer fork support the electrum server protocol, or is it rpc based? If so I can look into testing against it.

[nharmon9]

This is the problem I ran into NBX and NBitcoin can't sign elements transactions at the moment, so it only has rpc support.

[nharmon9]

Also I have had trouble building electrs on mac. It fails at compiling librocksdb.

[jb55]

nharmon9 notifications@github.com writes:

Also I have had trouble building electrs on mac. It fails at compiling librocksdb.

yeah I've definitely run into build issues for librocksdb. This PR is a bit offtopic now. Feel free to email me (jb55@jb55.com) about any elements regtesting/rpc stuff since I'm deep into that right now. There's also #elements channel on the Blockstream slack. Looking forward to extracting a lot of this stuff into a standalone lib again.

[nharmon9]

Thanks for the invite. Will do.