fixing workflow configuration

Author: haixuanTao

.github/workflows/general.yml

@@ -73,21 +73,17 @@ jobs:
       # ******************************************************************
       - name: Download prebuilt archive (GPU, x86_64-unknown-linux-gnu)
         uses: actions-rs/cargo@v1
-        env:
-          ORT_USE_CUDA: "yes"
         with:
           command: build
-          args: --target x86_64-unknown-linux-gnu
+          args: --target x86_64-unknown-linux-gnu --features cuda
       - name: Verify prebuilt archive downloaded (GPU, x86_64-unknown-linux-gnu)
         run: ls -lh target/x86_64-unknown-linux-gnu/debug/build/onnxruntime-sys-*/out/onnxruntime-linux-x64-gpu-1.*.tgz
       # ******************************************************************
       - name: Download prebuilt archive (GPU, x86_64-pc-windows-msvc)
         uses: actions-rs/cargo@v1
-        env:
-          ORT_USE_CUDA: "yes"
         with:
           command: build
-          args: --target x86_64-pc-windows-msvc
+          args: --target x86_64-pc-windows-msvc --features cuda
       - name: Verify prebuilt archive downloaded (GPU, x86_64-pc-windows-msvc)
         run: ls -lh target/x86_64-pc-windows-msvc/debug/build/onnxruntime-sys-*/out/onnxruntime-win-gpu-x64-1.*.zip
 
@@ -141,8 +137,12 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: build
-          # Use --manifest-path instead of --package. See https://github.com/actions-rs/cargo/issues/86
           args: --manifest-path onnxruntime/Cargo.toml --features model-fetching
+      - name: Build onnxruntime with 'cuda' feature
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --manifest-path onnxruntime/Cargo.toml --features cuda
       - name: Test onnxruntime-sys
         uses: actions-rs/cargo@v1
         with:

onnxruntime-sys/examples/c_api_sample.rs

@@ -49,8 +49,6 @@ fn main() {
     };
 
     // Optionally add more execution providers via session_options
-    // E.g. for CUDA include cuda_provider_factory.h and uncomment the following line:
-    // OrtSessionOptionsAppendExecutionProvider_CUDA(sessionOptions, 0);
 
     //*************************************************************************
     // create session and load model into memory

onnxruntime-sys/wrapper.h

@@ -2,4 +2,4 @@
 #include "cpu_provider_factory.h"
 #if !defined(__APPLE__)
 #include "cuda_provider_factory.h"
-#endif
+#endif