try manual __imp_ dereference

Author: eerii

glib/gobject-sys/build.rs

@@ -2,8 +2,6 @@
 // from gir-files (https://github.com/gtk-rs/gir-files)
 // DO NOT EDIT
 
-mod build_manual;
-
 #[cfg(not(docsrs))]
 use std::process;
 
@@ -16,6 +14,4 @@ fn main() {
         println!("cargo:warning={s}");
         process::exit(1);
     }
-
-    build_manual::main();
 }

glib/gobject-sys/build_manual.rs

@@ -1,10 +1,25 @@
 use glib_sys::GType;
 
-// `g_param_spec_types` extern binding generated by build.rs
-include!(concat!(env!("OUT_DIR"), "/param_spec.rs"));
+#[cfg(not(target_os = "windows"))]
+type GParamSpecType = *const GType;
+
+#[cfg(target_os = "windows")]
+type GParamSpecType = *const *const GType;
+
+extern "C" {
+    #[cfg_attr(target_os = "windows", link_name = "__imp_g_param_spec_types")]
+    static g_param_spec_types: GParamSpecType;
+}
 
 /// # Safety
 /// This should be safe as long as the offset added to g_param_spec_types is in bounds.
 pub unsafe fn g_param_spec_types_get_type(offset: usize) -> GType {
-    *g_param_spec_types.add(offset)
+    #[cfg(not(target_os = "windows"))]
+    let ptr = g_param_spec_types;
+
+    // One more step of indirection on windows because of the __imp_ prefix
+    #[cfg(target_os = "windows")]
+    let ptr = *g_param_spec_types;
+
+    *ptr.add(offset)
 }

glib/gobject-sys/src/manual.rs

@@ -302,7 +302,7 @@ macro_rules! define_param_spec {
             #[inline]
             fn static_type() -> Type {
                 unsafe {
-                    from_glib(gobject_ffi::g_param_spec_types_get_type($rust_type_offset))
+                    from_glib(gobject_sys::g_param_spec_types_get_type($rust_type_offset))
                 }
             }
         }