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-rw-r--r--video/camera.hpp12
1 files changed, 10 insertions, 2 deletions
diff --git a/video/camera.hpp b/video/camera.hpp
index a0fe0adb..d4d17c8f 100644
--- a/video/camera.hpp
+++ b/video/camera.hpp
@@ -75,9 +75,17 @@ void register_camera(std::unique_ptr<impl::camera_> metadata);
static const char init_ ## ctr = \
(::video::impl::register_camera(std::make_unique<type>()), 0);
-#define OTR_REGISTER_CAMERA2(type, ctr) \
- OTR_REGISTER_CAMERA3(type, ctr)
+#ifdef _MSC_VER
+ // shared library targets without any symbols break cmake build
+# define OTR_REGISTER_CAMERA_IMPL() \
+ extern "C" __declspec(dllexport) [[maybe_unused]] void _opentrack_module(void) {}
+#else
+# define OTR_REGISTER_CAMERA_IMPL()
+#endif
+#define OTR_REGISTER_CAMERA2(type, ctr) \
+ OTR_REGISTER_CAMERA3(type, ctr) \
+ OTR_REGISTER_CAMERA_IMPL()
#define OTR_REGISTER_CAMERA(type) \
OTR_REGISTER_CAMERA2(type, __COUNTER__)