From fe1fe74719ab4fef873a22e2b28cce0c57d570e0 Mon Sep 17 00:00:00 2001
From: Robert Scott <code@humanleg.org.uk>
Date: Sun, 3 Nov 2024 16:39:38 +0000
Subject: [PATCH] fix building with system igraph

---
 plugins/graph_algorithm/CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/plugins/graph_algorithm/CMakeLists.txt b/plugins/graph_algorithm/CMakeLists.txt
index 5db5f4a6c1a..c5ddc362014 100644
--- a/plugins/graph_algorithm/CMakeLists.txt
+++ b/plugins/graph_algorithm/CMakeLists.txt
@@ -14,6 +14,8 @@ if(PL_GRAPH_ALGORITHM OR BUILD_ALL_PLUGINS)
         LINK_LIBRARIES PUBLIC ${igraph_LIBRARIES}
     )
 
-add_dependencies(graph_algorithm igraph_0_10)
+if(USE_VENDORED_IGRAPH)
+    add_dependencies(graph_algorithm igraph_0_10)
+endif()
 
 endif()