From a53d334b90b152d6f201cdbb4b528859da6f3c73 Mon Sep 17 00:00:00 2001
From: Magnus Jacobsson <Magnus.Jacobsson@berotec.se>
Date: Fri, 30 Jul 2021 08:40:06 +0200
Subject: [PATCH] circogen: CMake: define NEATOGEN_EXPORTS

circogen is part of the neato_layout plugin.

Fixes errors like this using CMake with MinGW:

circogen.lib(circularinit.obj) : error LNK2019: unresolved external symbol __imp_spline_edges referenced in function circo_layout [C:\Users\magja\graphviz\build\plugin\neato_layout\gvplugin_neato_layout.vcxproj]

Towards https://gitlab.com/graphviz/graphviz/-/issues/2058
---
 lib/circogen/CMakeLists.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/circogen/CMakeLists.txt b/lib/circogen/CMakeLists.txt
index eebbe5b68..7aa09faaf 100644
--- a/lib/circogen/CMakeLists.txt
+++ b/lib/circogen/CMakeLists.txt
@@ -1,3 +1,5 @@
+add_definitions(-DNEATOGEN_EXPORTS=1)
+
 add_library(circogen STATIC
     # Header files
     block.h
-- 
2.40.0