ci: enable -Werror=dev

Turn developer & deprecation warnings into errors.

.github/ci-test-each-commit-exec.py

@@ -27,6 +27,7 @@ def main():
         "cmake",
         "-B",
         "build",
+        "-Werror=dev",
         "-DCMAKE_C_COMPILER=clang",
         "-DCMAKE_CXX_COMPILER=clang++",
         "-DWERROR=ON",

.github/workflows/ci.yml

@@ -223,7 +223,7 @@ jobs:
 
       - name: Generate build system
         run: |
-          cmake -B build --preset vs2022 -DCMAKE_TOOLCHAIN_FILE="${VCPKG_INSTALLATION_ROOT}/scripts/buildsystems/vcpkg.cmake" ${{ matrix.generate-options }}
+          cmake -B build -Werror=dev --preset vs2022 -DCMAKE_TOOLCHAIN_FILE="${VCPKG_INSTALLATION_ROOT}/scripts/buildsystems/vcpkg.cmake" ${{ matrix.generate-options }}
 
       - name: Save vcpkg binary cache
         uses: actions/cache/save@v4

ci/test/03_test_script.sh

@@ -118,7 +118,7 @@ BASE_BUILD_DIR=${BASE_BUILD_DIR:-$BASE_SCRATCH_DIR/build-$HOST}
 mkdir -p "${BASE_BUILD_DIR}"
 cd "${BASE_BUILD_DIR}"
 
-BITCOIN_CONFIG_ALL="$BITCOIN_CONFIG_ALL -DCMAKE_INSTALL_PREFIX=$BASE_OUTDIR"
+BITCOIN_CONFIG_ALL="$BITCOIN_CONFIG_ALL -DCMAKE_INSTALL_PREFIX=$BASE_OUTDIR -Werror=dev"
 
 if [[ "${RUN_TIDY}" == "true" ]]; then
   BITCOIN_CONFIG_ALL="$BITCOIN_CONFIG_ALL -DCMAKE_EXPORT_COMPILE_COMMANDS=ON"