support mscv statically linked CRT (#2118)

* support mscv mt

* prevent modification of flag

CMakeLists.txt

@@ -34,6 +34,7 @@ option(MMDEPLOY_BUILD_EXAMPLES "build examples" OFF)
 option(MMDEPLOY_SPDLOG_EXTERNAL "use external spdlog" OFF)
 option(MMDEPLOY_ZIP_MODEL "support SDK model in zip format" OFF)
 option(MMDEPLOY_COVERAGE "build SDK for coverage" OFF)
+option(MMDEPLOY_USE_MSCV_STATIC "statically linked CRT" OFF)
 option(MMDEPLOY_ELENA_FUSION "use elena to fuse preprocess" OFF)
 
 set(MMDEPLOY_TARGET_DEVICES "cpu" CACHE STRING "target devices to support")
@@ -78,6 +79,12 @@ endif ()
 if (MSVC)
     add_compile_options($<$<COMPILE_LANGUAGE:CXX>:/diagnostics:classic>)
     add_compile_options($<$<COMPILE_LANGUAGE:CXX>:/wd4251>)
+    if (MMDEPLOY_USE_MSCV_STATIC)
+        foreach(lang C CXX)
+            string(REPLACE /MD /MT CMAKE_${lang}_FLAGS_DEBUG "${CMAKE_${lang}_FLAGS_DEBUG}")
+            string(REPLACE /MD /MT CMAKE_${lang}_FLAGS_RELEASE "${CMAKE_${lang}_FLAGS_RELEASE}")
+        endforeach()
+    endif ()
 endif ()
 
 if(APPLE)

cmake/cuda.cmake

@@ -103,3 +103,8 @@ if (NOT MSVC)
     set(CMAKE_CUDA_STANDARD 14)
 endif ()
 set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} ${_NVCC_FLAGS}")
+
+if (MSVC AND MMDEPLOY_USE_MSCV_STATIC)
+    string(REPLACE -MD -MT CMAKE_CUDA_FLAGS_DEBUG "${CMAKE_CUDA_FLAGS_DEBUG}")
+    string(REPLACE -MD -MT CMAKE_CUDA_FLAGS_RELEASE "${CMAKE_CUDA_FLAGS_RELEASE}")
+endif ()

csrc/mmdeploy/backend_ops/CMakeLists.txt

@@ -1,7 +1,7 @@
 if (NOT MSVC)
     set(CMAKE_CXX_STANDARD 14)
+    set(CMAKE_CXX_FLAGS_RELEASE "-O3")
 endif ()
-set(CMAKE_CXX_FLAGS_RELEASE "-O3")
 
 # build ONNXRUNTIME ops
 if ("ort" IN_LIST MMDEPLOY_TARGET_BACKENDS)