Add Cross.toml

Cross.toml

@@ -0,0 +1,26 @@
+[build.env]
+passthrough = ["BUF_CACHE_DIR=/tmp"]
+
+[target.x86_64-unknown-linux-gnu]
+pre-build = [
+    "apt-get update",
+    "apt-get install -y openssl ca-certificates pkg-config cmake libssl-dev curl",
+    "curl -sSL https://github.com/bufbuild/buf/releases/download/v1.47.2/buf-Linux-x86_64 -o /usr/local/bin/buf",
+    "chmod +x /usr/local/bin/buf",
+    "buf --version",
+    "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v25.1/protoc-v25.1-linux-x86_64.zip -o /tmp/protoc.zip",
+    "unzip /tmp/protoc.zip -d /usr/local",
+    "protoc --version",
+]
+
+[target.aarch64-unknown-linux-gnu]
+pre-build = [
+    "apt-get update",
+    "apt-get install -y openssl ca-certificates pkg-config cmake libssl-dev curl",
+    "curl -sSL https://github.com/bufbuild/buf/releases/download/v1.47.2/buf-Linux-aarch64 -o /usr/local/bin/buf",
+    "chmod +x /usr/local/bin/buf",
+    "buf --version",
+    "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v25.1/protoc-v25.1-linux-aarch_64.zip -o /tmp/protoc.zip",
+    "unzip /tmp/protoc.zip -d /usr/local",
+    "protoc --version",
+]