From a66ee61564cd5f88d772d0966d32bfa4799113e2 Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Thu, 21 Mar 2024 16:34:49 +0100
Subject: [PATCH] Windows CUDA compilation fixes

---
 configure.ac                              | 3 ++-
 src/host.cpp                              | 5 +++++
 src/libavcodec/from_lavc_vid_conv_cuda.cu | 1 +
 src/libavcodec/to_lavc_vid_conv_cuda.cu   | 1 +
 4 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index f4259121e..a7dd050ec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -191,7 +191,8 @@ AC_ARG_ENABLE(all,
         )
 
 if test $system = Windows; then
-        CUDA_FLAGS="$CUDA_FLAGS -Xcompiler -FS"
+        CUDA_FLAGS="$CUDA_FLAGS -Xcompiler -FS -Xcompiler -GS-"
+        LDFLAGS="$LDFLAGS -Xlinker //nodefaultlib"
 else
         CFLAGS="$CFLAGS -fPIC"
         CXXFLAGS="$CXXFLAGS -fPIC"
diff --git a/src/host.cpp b/src/host.cpp
index b0ca22a73..ae5d3a7c0 100644
--- a/src/host.cpp
+++ b/src/host.cpp
@@ -163,6 +163,11 @@ std::unordered_map<std::string, std::string> commandline_params;
 mainloop_t mainloop;
 void *mainloop_udata;
 
+#if defined HAVE_CUDA && defined _WIN32
+// required for NVCC+MSVC compiled objs if /nodefaultlib is used
+extern "C" int _fltused = 0;
+#endif
+
 struct init_data {
         bool com_initialized = false;
         list <void *> opened_libs;
diff --git a/src/libavcodec/from_lavc_vid_conv_cuda.cu b/src/libavcodec/from_lavc_vid_conv_cuda.cu
index e2929743e..25db809b0 100644
--- a/src/libavcodec/from_lavc_vid_conv_cuda.cu
+++ b/src/libavcodec/from_lavc_vid_conv_cuda.cu
@@ -47,6 +47,7 @@ extern "C" void log_msg(int log_level, const char *format, ...);
 struct av_to_uv_convert_cuda {
         enum AVPixelFormat in_codec;
         codec_t out_codec;
+        virtual ~av_to_uv_convert_cuda() = default;
 };
 
 struct av_to_uv_convert_cuda *
diff --git a/src/libavcodec/to_lavc_vid_conv_cuda.cu b/src/libavcodec/to_lavc_vid_conv_cuda.cu
index f142fb0d8..0a7957c8c 100644
--- a/src/libavcodec/to_lavc_vid_conv_cuda.cu
+++ b/src/libavcodec/to_lavc_vid_conv_cuda.cu
@@ -48,6 +48,7 @@ using std::shared_ptr;
 
 struct to_lavc_vid_conv_cuda {
         shared_ptr<struct AVFrame> out_frame;
+        virtual ~to_lavc_vid_conv_cuda() = default;
 };
 
 struct to_lavc_vid_conv_cuda *