Refactor WINDOWS_EXPORT_ALL_SYMBOLS implementation

Use `cmGeneratorTarget::ModuleDefinitionInfo` to combine the
implementation of `WINDOWS_EXPORT_ALL_SYMBOLS` with that of using a
`.def` file as a source.  Only one of these could be used within a
single target before anyway.

1 files changed, 1 insertions, 0 deletions

diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h
index 2f75e20..92285f3 100644
--- a/Source/cmGeneratorTarget.h
+++ b/Source/cmGeneratorTarget.h
@@ -238,6 +238,7 @@ public:
   struct ModuleDefinitionInfo
   {
     std::string DefFile;
+    bool WindowsExportAllSymbols;
   };
   ModuleDefinitionInfo const* GetModuleDefinitionInfo(
     std::string const& config) const;