sparse: MSBuild: define GVDLL to ensure correct storage-class attributes

An upcoming commit that removes the common/globals.h symbols from the
gvc.def file would otherwise cause errors like this:

sparse.lib(DotIO.obj) : error LNK2001: unresolved external symbol _Verbose

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

diff --git a/lib/sparse/gvsparse.vcxproj b/lib/sparse/gvsparse.vcxproj
index 8b49380163eff15de175911869803c0b343a7acd..2dd003017218aeb7353565402eadadd3f6080301 100644 (file)
--- a/lib/sparse/gvsparse.vcxproj
+++ b/lib/sparse/gvsparse.vcxproj
@@ -52,7 +52,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_DEBUG;_LIB;GVDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <PrecompiledHeader />
@@ -66,7 +66,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <PreprocessorDefinitions>NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>NDEBUG;_LIB;GVDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PrecompiledHeader />
       <WarningLevel>Level4</WarningLevel>
       <EnablePREfast>true</EnablePREfast>