Add Codama IDL to program binary (#105)

* Add Codama IDL

* Add IDL to program binary

* Update dependency

* Use published crate

---------

Co-authored-by: Hardhat Chad <155858888+HardhatChad@users.noreply.github.com>

program/Cargo.toml

@@ -9,6 +9,7 @@ documentation.workspace = true
 repository.workspace = true
 readme.workspace = true
 keywords.workspace = true
+build = "build.rs"
 
 [lib]
 crate-type = ["cdylib", "lib"]
@@ -19,6 +20,7 @@ default = []
 
 [dependencies]
 drillx.workspace = true
+solana-include-idl = "0.1"
 mpl-token-metadata.workspace = true
 ore-api.workspace = true
 ore-boost-api.workspace = true
@@ -29,3 +31,6 @@ steel.workspace = true
 
 [dev-dependencies]
 rand = "0.8.5"
+
+[build-dependencies]
+solana-include-idl = { version = "0.1", features = ["shrink"] }

program/build.rs

@@ -0,0 +1,18 @@
+use std::env;
+use std::path::PathBuf;
+
+use solana_include_idl::compress_idl;
+
+/// Build script to compress the IDL file to a zip file when building the program.
+///
+/// The compressed IDL is then included in a separate ELF section on the program binary
+/// when the program is built.
+fn main() {
+    // Get the IDL path.
+    let idl_path = PathBuf::from("../api").join("idl.json");
+    // Compress the IDL file to a zip file.
+    let out_dir = env::var("OUT_DIR").unwrap();
+    let dest_path = PathBuf::from(out_dir).join("codama.idl.zip");
+
+    compress_idl(&idl_path, &dest_path);
+}

program/src/lib.rs

@@ -19,8 +19,11 @@ use update::*;
 use upgrade::*;
 
 use ore_api::instruction::*;
+use solana_include_idl::{include_idl, parse::IdlType};
 use steel::*;
 
+// Include the compressed IDL in an ELF section on the program binary.
+include_idl!(IdlType::Codama, concat!(env!("OUT_DIR"), "/codama.idl.zip"));
 #[allow(deprecated)]
 pub fn process_instruction(
     program_id: &Pubkey,