docs: add Windows arm64 build instructions to BUILDING.md and improve…

… error message in download_binaries.rs (#58)
thewh1teagle · Dec 25, 2024 · fbaec8a · fbaec8a
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diff --git a/BUILDING.md b/BUILDING.md
@@ -256,3 +256,16 @@ Build
 export RUSTFLAGS="-C link-arg=-fapple-link-rtlib" # See https://github.com/bmrlab/gendam/issues/96
 cargo build --release --target aarch64-apple-ios
 ```
+
+## Build for Windows arm64
+
+1. Install toolchain in Visual Studio
+
+Open Visual Studio Installer, go to Individual Components, search ARM64, select MSVC v[version] - ARM64 build tools, and click Modify.
+
+1. Build
+
+```console
+rustup target add aarch64-pc-windows-msvc
+cargo build --no-default-features --target aarch64-pc-windows-msvc --release
+```
diff --git a/crates/sherpa-rs-sys/src/download_binaries.rs b/crates/sherpa-rs-sys/src/download_binaries.rs
@@ -144,7 +144,7 @@ impl DistTable {
         } else {
             self.targets
                 .get(target)
-                .unwrap_or_else(|| panic!("Target {} not found", target))
+                .unwrap_or_else(|| panic!("Target {} not found. try to disable download-feature with --no-default-features.", target))
         };
         debug_log!(
             "raw target_dist: {:?}",