try fix build

.github/workflows/rust.yml

@@ -17,6 +17,7 @@ env:
   # paths to be preserved. Use "/" as a delimiter.
   RELEASE_ADDS: README.md LICENSE
 
+  CARGO_TERM_COLOR: always
 
 jobs:
   build:
@@ -40,19 +41,6 @@ jobs:
     steps:
     - uses: actions/checkout@v1
 
-    - name: Install Rust (rustup)
-      run: rustup update ${{ matrix.rust }} --no-self-update && rustup default ${{ matrix.rust }}
-      if: matrix.os != 'macos-latest'
-      shell: bash
-
-    - name: Install Rust (macos)
-      # As of 7.12.2019 rust is not installed on MacOS
-      # https://help.github.com/en/actions/automating-your-workflow-with-github-actions/software-installed-on-github-hosted-runners#macos-1015
-      run: |
-        curl https://sh.rustup.rs | sh -s -- -y
-        echo "##[add-path]$HOME/.cargo/bin"
-      if: matrix.os == 'macos-latest'
-
     - name: Build
       run: cargo build --verbose --release
 

build.rs

@@ -6,7 +6,10 @@ fn main() {
         .file("src/main.cpp")
         .compile("foo");
 
-    println!("cargo:rustc-link-arg=foo.lib"); // vs2013可能需要这个，试了很多办法都失败
+    #[cfg(windows)]
+    {
+        println!("cargo:rustc-link-arg=foo.lib"); // vs2013可能需要这个，试了很多办法都失败
+    }
     println!("cargo:rerun-if-changed=build.rs");
     println!("cargo:rerun-if-changed=src/main");
 }