build.rs

Author: tgross35

builtins-test-intrinsics/build.rs

@@ -8,4 +8,9 @@ fn main() {
     let target = builtins_configure::Target::from_env();
     builtins_configure::configure_f16_f128(&target);
     builtins_configure::configure_aliases(&target);
+
+    if target.os == "windows" {
+        // Needed for using the `mainCRTStartup` entrypoint.
+        println!("cargo::rustc-link-arg=/subsystem:console");
+    }
 }

builtins-test-intrinsics/src/main.rs

@@ -650,12 +650,20 @@ fn something_with_a_dtor(f: &dyn Fn()) {
 
 #[no_mangle]
 #[cfg(not(thumb))]
-#[cfg(not(any(thumb)))]
+#[cfg(not(any(thumb, windows)))]
 extern "C" fn main(_argc: core::ffi::c_int, _argv: *const *const u8) -> core::ffi::c_int {
     run();
     0
 }
 
+#[no_mangle]
+#[cfg(windows)]
+#[allow(non_snake_case)]
+extern "C" fn mainCRTStartup() -> core::ffi::c_int {
+    run();
+    0
+}
+
 #[no_mangle]
 #[cfg(thumb)]
 extern "C" fn _start() -> ! {