Use /W3 with VC++ (/W4 is really noisy, but it seems mostly useless stuff).

But, disable warnings 4250 and 4251 in build.h with a pragma. Both seem
impossible to work around without very major code changes, and both seem
harmless AFAICT.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/build-data/buildh.in b/src/build-data/buildh.in
index b784e287e..4e2e19f73 100644
--- a/src/build-data/buildh.in
+++ b/src/build-data/buildh.in
@@ -60,6 +60,12 @@
 
 %{target_compiler_defines}
 
+#if defined(BOTAN_TARGET_COMPILER_IS_MSVC)
+  // 4250: inherits via dominance (diamond inheritence issue)
+  // 4251: needs DLL interface (STL DLL exports)
+  #pragma warning(disable: 4250 4251)
+#endif
+
 /* Module definitions */
 %{module_defines}