From c6b8b3a95a9b7e6af9ad5f65766711e109ddba63 Mon Sep 17 00:00:00 2001
From: Nando Vieira <me@fnando.com>
Date: Mon, 3 Feb 2025 14:05:15 -0800
Subject: [PATCH] Add features for guarding code based on the P23. (#1863)

---
 cmd/soroban-cli/Cargo.toml |  2 ++
 cmd/soroban-cli/build.rs   | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/cmd/soroban-cli/Cargo.toml b/cmd/soroban-cli/Cargo.toml
index 2b667b0b1..3d6a027c1 100644
--- a/cmd/soroban-cli/Cargo.toml
+++ b/cmd/soroban-cli/Cargo.toml
@@ -36,6 +36,8 @@ doctest = false
 
 [features]
 default = []
+version_lt_23 = []
+version_gte_23 = []
 opt = ["dep:wasm-opt"]
 
 [dependencies]
diff --git a/cmd/soroban-cli/build.rs b/cmd/soroban-cli/build.rs
index b6e6dd92a..edd29d714 100644
--- a/cmd/soroban-cli/build.rs
+++ b/cmd/soroban-cli/build.rs
@@ -1,3 +1,22 @@
 fn main() {
     crate_git_revision::init();
+    set_protocol_features();
+}
+
+fn set_protocol_features() {
+    let version = env!("CARGO_PKG_VERSION");
+    let major_version: u32 = version
+        .split('.')
+        .next()
+        .unwrap_or("0")
+        .parse()
+        .unwrap_or(0);
+
+    if major_version < 23 {
+        println!("cargo:rustc-cfg=feature=\"version_lt_23\"");
+    }
+
+    if major_version >= 23 {
+        println!("cargo:rustc-cfg=feature=\"version_gte_23\"");
+    }
 }