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feat: add linker args for VHF lib to wdk-build #653

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feat: add linker args for VHF lib to wdk-build #653

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294c27e
initial commit - add vhf lib link emission to wdk-build
Apr 30, 2026
b194380
remove wdk-sys feature flag forward
May 1, 2026
cfae425
add comments to linker emissions for vhf lib
May 1, 2026
70305e3
Merge branch 'microsoft:main' into vhf_lib_linker_args
Alan632 May 1, 2026
4427c85
redesigned wdk-build build script output linking vhf to use cargo met…
May 6, 2026
7fc834a
formatting
May 6, 2026
74ebe7c
changed how the "hid" feature is checked in configure_binary_build
May 6, 2026
6bdb8e3
changed Config's enabled_api_subsets member to utilize the type safe …
May 7, 2026
8ff9e5b
added serde attribute to Config member for deserialize compatibility
May 7, 2026
0d8fe7f
extended config unit tests to include new member
May 8, 2026
18d42f3
refactor api_subsets search to use match, refactor hid api check to u…
May 8, 2026
55a63a1
refactored feature filter to skip json and use ApiSubset deserializer…
May 9, 2026
d22d9db
add error to panic message
May 9, 2026
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1 change: 1 addition & 0 deletions crates/wdk-build/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ ignored = [

[features]
nightly = []
vhf = []

[dependencies]
anyhow.workspace = true
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18 changes: 18 additions & 0 deletions crates/wdk-build/src/lib.rs
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Expand Up @@ -1157,6 +1157,12 @@ impl Config {
// provides no way to set a symbol's name without also exporting the symbol:
// https://github.com/rust-lang/rust/issues/67399
println!("cargo::rustc-cdylib-link-arg=/IGNORE:4216");

// Link against VhfKm.lib (Virtual HID Framework, kernel-mode) when
// the "vhf" feature is enabled. Required by drivers that create
// virtual HID devices.
#[cfg(feature = "vhf")]
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println!("cargo::rustc-cdylib-link-arg=VhfKm.lib");
}
DriverConfig::Kmdf(_) => {
// Emit KMDF-specific libraries to link to
Expand Down Expand Up @@ -1186,6 +1192,12 @@ impl Config {
// Ignore `LNK4257: object file was not compiled for kernel mode; the image
// might not run` since `rustc` has no support for `/KERNEL`
println!("cargo::rustc-cdylib-link-arg=/IGNORE:4257");

// Link against VhfKm.lib (Virtual HID Framework, kernel-mode) when
// the "vhf" feature is enabled. Required by drivers that create
// virtual HID devices.
#[cfg(feature = "vhf")]
println!("cargo::rustc-cdylib-link-arg=VhfKm.lib");
}
DriverConfig::Umdf(umdf_config) => {
// Emit UMDF-specific libraries to link to
Expand All @@ -1200,6 +1212,12 @@ impl Config {

// Linker arguments derived from WindowsDriver.UserMode.props in Ni(22H2) WDK
println!("cargo::rustc-cdylib-link-arg=/SUBSYSTEM:WINDOWS");

// Link against VhfUm.lib (Virtual HID Framework, user-mode) when
// the "vhf" feature is enabled. Required by drivers that create
// virtual HID devices.
#[cfg(feature = "vhf")]
println!("cargo::rustc-cdylib-link-arg=VhfUm.lib");
}
}

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