1 files changed, 60 insertions, 0 deletions
diff --git a/ci/gha/setup-env.inc.sh b/ci/gha/setup-env.inc.sh
new file mode 100644
index 0000000..c0aca85
--- /dev/null
+++ b/ci/gha/setup-env.inc.sh
@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2086,SC2129,SC2034
+
+set -euxo pipefail
+# execute this script in a separate, early step
+
+LOCAL_BUILDS="${GITHUB_WORKSPACE}/builds"
+
+# To install and cache our dependencies we need an absolute path
+# that does not change, is writable, and resides within
+# GITHUB_WORKSPACE.
+# On macOS GITHUB_WORKSPACE includes the github runner version,
+# so it does not remain constant.
+# This causes problems with, for example, pkgconfig files
+# referencing paths that no longer exist.
+CACHE_DIR="installs"
+mkdir -p "${CACHE_DIR}"
+
+if [[ "${RUNNER_OS}" = "Windows" ]]
+then
+  rnp_local_installs="${RUNNER_TEMP}/rnp-local-installs"
+else
+  rnp_local_installs=/tmp/rnp-local-installs
+fi
+
+ln -s "$GITHUB_WORKSPACE/installs" "${rnp_local_installs}"
+LOCAL_INSTALLS="${rnp_local_installs}"
+
+# When building packages, dependencies with non-standard installation paths must
+# be found by the (DEB) package builder.
+BOTAN_INSTALL="${rnp_local_installs}/botan-install"
+JSONC_INSTALL="${rnp_local_installs}/jsonc-install"
+GPG_INSTALL="${rnp_local_installs}/gpg-install"
+
+# set this explicitly since we don't want to cache the rnp installation
+RNP_INSTALL="${GITHUB_WORKSPACE}/rnp-install"
+
+for var in \
+  LOCAL_BUILDS \
+  CACHE_DIR \
+  LOCAL_INSTALLS \
+  BOTAN_INSTALL \
+  JSONC_INSTALL \
+  GPG_INSTALL \
+  RNP_INSTALL
+do
+  val="${!var}"
+
+  # Replace all backslashes with forward slashes, for cmake, so the following
+  # error would not come up:
+  #
+  # Invalid character escape '\a'.
+  #
+  if [[ "${RUNNER_OS}" = "Windows" ]]
+  then
+    val="${val//\\/\/}"
+  fi
+
+  echo "${var}=${val}" >> "$GITHUB_ENV"
+done