Add CI script to manually build tarballs for the releases.

ci/build_tarball.sh

@@ -0,0 +1,87 @@
+#!/usr/bin/env bash
+set -euxo pipefail
+
+# Manually build source tarball.
+# It may be run via the following command from the folder which contains this script (./rnp/ci-legacy for now):
+# docker run -it -v $(pwd):/opt/scripts:ro -v /tmp/rnp-artifacts:/opt/artifacts ghcr.io/rnpgp/ci-rnp-fedora-38-amd64 bash
+#
+# .. and then typing /opt/scripts/build_tarball.sh v0.17.1
+
+# Paths to cleanup from the RNP repository.
+declare -a CLEAN_PATHS=(
+    ".cirrus.yml"
+    ".clang-format"
+    ".codespellrc"
+    ".editorconfig"
+    ".git"
+    ".gitattributes"
+    ".github"
+    ".gitignore"
+    ".gitmodules"
+    ".config.yml"
+    "_config.yml"
+    "ci"
+    "ci-legacy"
+    "codecov.yml"
+    "git-hooks"
+    "src/libsexpp/.git"
+    "src/libsexpp/.gitattributes"
+    "src/libsexpp/.github"
+    "src/libsexpp/codecov.yml"
+    "src/libsexpp/.gitignore"
+    "src/libsexpp/.clangformat"
+)
+
+is_version() {
+    [[ "$1" =~ ^v[0-9]+(\.[0-9]+)*$ ]]
+}
+
+# Check whether artifacts dir exists
+RNP_ART="/opt/artifacts"
+if [ ! -d "${RNP_ART}" ]; then
+    >&2 echo "Error: artifacts dir ${RNP_ART} doesn't exist. Create or mount it before running the script."
+    exit 1
+fi
+
+# Get the branch or tag name, main by default and setup paths.
+RNP_URL="https://github.com/rnpgp/rnp.git"
+RNP_REF=${1:-main}
+RNP_PATH="/opt/rnp-${RNP_REF}"
+
+# Clone
+echo "Cloning ref ${RNP_REF} to ${RNP_PATH}..."
+git clone --branch "${RNP_REF}" --depth 1 --single-branch --recurse-submodules "${RNP_URL}" "${RNP_PATH}"
+
+# Cleanup files which are not needed in the tarball
+for path in "${CLEAN_PATHS[@]}"; do
+    echo "Removing ${RNP_PATH}/${path}..."
+    rm -rf "${RNP_PATH:?}/${path}"
+done
+
+# Create tarball
+
+RNP_BLD="/opt/rnp-build"
+rm -rf "${RNP_BLD}"
+cmake -B "${RNP_BLD}" -DBUILD_SHARED_LIBS=ON -DBUILD_TESTING=OFF "${RNP_PATH}"
+cpack -B "${RNP_BLD}" -G TGZ --config "${RNP_BLD}/CPackSourceConfig.cmake"
+
+# Check whether tarball builds
+# cpack would use symantic versioning for file names, i.e. rnp-v0.17.1
+RNP_TGZ=$(find "${RNP_BLD}" -maxdepth 1 -type f -name '*.tar.gz' | head -n 1)
+RNP_CHK="/opt/rnp-check"
+rm -rf "${RNP_CHK}"
+mkdir -p "${RNP_CHK}"
+
+tar -xzf "${RNP_TGZ}" -C "${RNP_CHK}"
+RNP_UNP=$(find "${RNP_CHK}" -mindepth 1 -maxdepth 1 -type d | head -n 1)
+cmake -B "${RNP_CHK}"/build -DBUILD_SHARED_LIBS=ON -DBUILD_TESTING=ON "${RNP_UNP}"
+cmake --build "${RNP_CHK}"/build --parallel "$(nproc)"
+
+# Copy artifacts to the /opt/artifacts
+cp "${RNP_TGZ}" "${RNP_ART}"
+
+# Calculate sha256 sums
+pushd "${RNP_ART}"
+RNP_SHA="$(basename "${RNP_TGZ%.tar.gz}.sha256")"
+sha256sum "$(basename "${RNP_TGZ}")" > "${RNP_SHA}"
+popd