From 3634e15e6ac2332642cd472622dbd6efcc65ac43 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Steffen=20Schu=CC=88mann?= <s.schuemann@pobox.com>
Date: Sat, 27 Dec 2025 22:07:27 +0100
Subject: [PATCH] Fix formatting and resolve expired GPG key issues in
 build_cmake.yml

---
 .github/workflows/build_cmake.yml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/build_cmake.yml b/.github/workflows/build_cmake.yml
index 04a6cc4..3742b79 100644
--- a/.github/workflows/build_cmake.yml
+++ b/.github/workflows/build_cmake.yml
@@ -229,7 +229,12 @@ jobs:
       - name: Install CMake and Ninja
         run: |
           apt-get update
-          apt-get install -y cmake ninja-build
+          # GCC 5-6 need --allow-unauthenticated due to expired Jessie GPG keys
+          if [ "${{ matrix.compiler }}" = "gcc" ] && ([ "${{ matrix.version }}" = "5" ] || [ "${{ matrix.version }}" = "6" ]); then
+            apt-get install -y --allow-unauthenticated cmake ninja-build
+          else
+            apt-get install -y cmake ninja-build
+          fi
 
       - name: Configure
         run: |