From 25588135fa713a697ca2835b1573633de6641869 Mon Sep 17 00:00:00 2001
From: Torsten Wierschin <torsten.wierschin@life-maps.com>
Date: Fri, 17 Jul 2026 17:23:52 +0200
Subject: [PATCH] ci: add app/build_gtest.sh to build and install GoogleTest
 from system sources

---
 app/build_gtest.sh | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100755 app/build_gtest.sh

diff --git a/app/build_gtest.sh b/app/build_gtest.sh
new file mode 100755
index 000000000..9161966cc
--- /dev/null
+++ b/app/build_gtest.sh
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Build and install GoogleTest on Debian/Ubuntu when libgtest-dev provides sources
+# Installs static libs into /usr/local so cmake can find GTest::gtest
+if [ -d /usr/src/googletest ] || [ -d /usr/src/gtest ]; then
+  echo "Building GoogleTest from system sources"
+  if [ -d /usr/src/googletest ]; then
+    src=/usr/src/googletest
+  else
+    src=/usr/src/gtest
+  fi
+  builddir="${src}/build"
+  mkdir -p "$builddir"
+  pushd "$builddir"
+  cmake -DCMAKE_POSITION_INDEPENDENT_CODE=ON ..
+  cmake --build . -- -j"$(nproc)"
+  cmake --install . --prefix=/usr/local
+  popd
+else
+  echo "No system gtest sources found in /usr/src; skipping build."
+fi