Support WINDOWS_EXPORT_ALL_SYMBOLS with `.def` files

The `WINDOWS_EXPORT_ALL_SYMBOLS` target property exports all symbols
found in object files explicitly given to the linker.  However, the
linker may also find additional symbols in dependencies and copy them
into the linked binary (e.g. from `msvcrt.lib`).  Provide a way to
export an explicit list of such symbols by adding a `.def` file as a
source file.

Fixes: #16473

1 files changed, 2 insertions, 0 deletions

diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h
index 92285f3..68d6ef8 100644
--- a/Source/cmGeneratorTarget.h
+++ b/Source/cmGeneratorTarget.h
@@ -238,7 +238,9 @@ public:
   struct ModuleDefinitionInfo
   {
     std::string DefFile;
+    bool DefFileGenerated;
     bool WindowsExportAllSymbols;
+    std::vector<cmSourceFile const*> Sources;
   };
   ModuleDefinitionInfo const* GetModuleDefinitionInfo(
     std::string const& config) const;