generate link attribute only for msvc

gdk-pixbuf/src/auto/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

gdk-pixbuf/sys/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

gio/src/auto/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

gio/sys/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

glib/gobject-sys/Cargo.toml

@@ -1,5 +1,6 @@
 [build-dependencies]
 system-deps = "7"
+pkg-config = "0.3"
 
 [dependencies]
 libc = "0.2"

glib/gobject-sys/build.rs

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

glib/gobject-sys/build_manual.rs

@@ -0,0 +1,31 @@
+use std::{env, fs::File, io::Write, path::Path};
+
+pub fn main() {
+    let deps = system_deps::Config::new()
+        .probe()
+        .expect("if this module is called, this is valid");
+
+    let out_dir = env::var("OUT_DIR").unwrap();
+    let out_path = Path::new(&out_dir).join("param_spec.rs");
+
+    // Generating a link attribute is necessary in windows
+    // (see https://rust-lang.github.io/rfcs/1717-dllimport.html#drawbacks)
+    // even if we are already linking with system_deps.
+    // We allow configuration of the library name from upstream dependents
+    // using the alias variable in the pkgconfig file.
+    let lib_name = deps
+        .iter()
+        .into_iter()
+        .filter_map(|(_, l)| pkg_config::get_variable(&l.name, "alias").ok())
+        .find(|s| !s.is_empty())
+        .unwrap_or("gobject-2.0".into());
+    let link = if cfg!(target_os = "windows") {
+        format!("#[link(name = \"{}\")]", lib_name)
+    } else {
+        "".into()
+    };
+
+    let code = format!("{link} extern \"C\" {{ pub static g_param_spec_types: *const GType; }}");
+    let mut f = File::create(&out_path).unwrap();
+    f.write_all(code.as_bytes()).unwrap();
+}

glib/gobject-sys/src/manual.rs

@@ -1,13 +1,10 @@
-// Take a look at the license at the top of the repository in the LICENSE file.
-
 use glib_sys::GType;
 
-extern "C" {
-    #[cfg_attr(target_os = "windows", link_name = "__imp_g_param_spec_types")]
-    pub static g_param_spec_types: *const GType;
-}
+// `g_param_spec_types` extern binding generated by build.rs
+include!(concat!(env!("OUT_DIR"), "/param_spec.rs"));
 
-// SAFETY: This should be safe as long as the offset added to g_param_spec_types is in bounds.
+/// # 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)
 }

glib/gobject-sys/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

glib/src/auto/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

glib/sys/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

graphene/src/auto/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

graphene/sys/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

pango/src/auto/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

pango/sys/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

pangocairo/src/auto/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)

pangocairo/sys/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 37c4bce0892f)
+Generated by gir (https://github.com/gtk-rs/gir @ d2ee14efdb8b)
 from gir-files (https://github.com/gtk-rs/gir-files @ 4d1189172a70)