elf: move to flatbuffers (#392)

Author: mjain-jump

.cargo/config.toml

@@ -0,0 +1,3 @@
+[env]
+PROTOC_EXECUTABLE = { value = "opt/bin/protoc", relative = true }
+FLATC_EXECUTABLE = { value = "opt/bin/flatc", relative = true }

.github/workflows/build-common.yml

@@ -18,6 +18,8 @@ jobs:
       cancel-in-progress: true
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: recursive
       # TODO: change back to stable once rust releases the coverage fix
       # - uses: dtolnay/[email protected]
       - uses: actions-rs/toolchain@v1
@@ -31,8 +33,8 @@ jobs:
 
       - name: Install dependencies
         run: |
-          sudo dnf install -y protobuf-compiler
           sudo dnf install -y systemd-devel
+          ./deps.sh
 
       - name: Check lints and clippy
         run: |

.gitmodules

@@ -0,0 +1,8 @@
+[submodule "shlr/flatbuffers"]
+	path = shlr/flatbuffers
+	url = https://github.com/firedancer-io/flatbuffers.git
+	branch = v25.9.23-patches
+[submodule "shlr/protobuf"]
+	path = shlr/protobuf
+	url = https://github.com/protocolbuffers/protobuf
+	branch = v25.2