From: Magnus Jacobsson <Magnus.Jacobsson@berotec.se>
Date: Thu, 22 Jul 2021 14:00:24 +0000 (+0200)
Subject: pathplan: add support for the dllexport storage-class attribute in vis.h
X-Git-Tag: 3.0.0~121^2~16
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=af191452e7853cef93536968c35bd3b008e57e01;p=graphviz

pathplan: add support for the dllexport storage-class attribute in vis.h

Also, storage-class attributes are now added only when the GVDLL
symbol is defined.

This will allow removing the viz.h symbols from the pathplan.def file
in an upcoming commit.

Towards https://gitlab.com/graphviz/graphviz/-/issues/2058.
---

diff --git a/lib/pathplan/vis.h b/lib/pathplan/vis.h
index c8c3e20b6..da23c37df 100644
--- a/lib/pathplan/vis.h
+++ b/lib/pathplan/vis.h
@@ -38,8 +38,10 @@ extern "C" {
 	/* this is computed from the above */
 	array2 vis;
     };
-#ifdef _WIN32
-#ifndef PATHPLAN_EXPORTS
+#ifdef GVDLL
+#ifdef PATHPLAN_EXPORTS
+#define VIS_API __declspec(dllexport)
+#else
 #define VIS_API __declspec(dllimport)
 #endif
 #endif