From 8c4036aa50b731cfd8aed1cf4f958289cb4e6b8d Mon Sep 17 00:00:00 2001
From: Mario Fetka <mario.fetka@gmail.com>
Date: Sun, 7 Sep 2025 09:52:18 +0200
Subject: [PATCH] only on build run per host

---
 .gitea/workflows/build.yml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 6672409..5b69ae6 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -39,6 +39,17 @@ jobs:
           script: |
             set -e
 
+            # --- Solaris-compatible host-level lock ---
+            LOCKDIR="/tmp/build-host.lock"
+            while ! mkdir "$LOCKDIR" 2>/dev/null; do
+                echo "Another build is running on this host. Waiting..."
+                sleep 10
+            done
+            echo "Acquired host lock, starting build..."
+
+            # Ensure lock is removed on exit
+            trap "rmdir '$LOCKDIR'" EXIT
+
             echo "=== Updating sources on Solaris ${{ matrix.osver }} ==="
             cd /usr/src/buildpkg && git pull
             cd /usr/src/dbpware-for-solaris && git pull