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Provide opt-out feature=from_source to use serde_derive source #2580

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2 changes: 1 addition & 1 deletion precompiled/serde_derive/Cargo.toml
Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ deserialize_in_place = []
[lib]
proc-macro = true

[target.'cfg(not(all(serde_derive_build = "precompiled", target_arch = "x86_64", target_os = "linux", target_env = "gnu")))'.dependencies]
[target.'cfg(serde_derive_build = "source")'.dependencies]
proc-macro2 = "1"
quote = "1"
syn = "2.0.28"
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21 changes: 21 additions & 0 deletions precompiled/serde_derive/build.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
fn is_target_precompiled(target: &str) -> bool {
target == "x86_64-unknown-linux-gnu"
}

fn main() {
// Alternatively use platforms crate etc. for Types
let target = match std::env::var("TARGET") {
Ok(target) => target,
_ => "".to_string(), // TARGET should be required ?
};
println!("cargo:warning=\"{target}\"");
// This is required to simplify gating
let derive_build = match std::env::var("CARGO_CFG_SERDE_DERIVE_BUILD").as_deref() {
Ok("source") => "source",
_ => match is_target_precompiled(&target) {
true => "precompiled",
false => "source",
},
};
println!("cargo:rustc-cfg=serde_derive_build=\"{derive_build}\"");
}
14 changes: 2 additions & 12 deletions precompiled/serde_derive/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -15,18 +15,8 @@

#![doc(html_root_url = "https://docs.rs/serde_derive/1.0.183")]

#[cfg(all(
serde_derive_build = "source",
target_arch = "x86_64",
target_os = "linux",
target_env = "gnu"
))]
#[cfg(serde_derive_build = "source")]
include!("lib_from_source.rs");

#[cfg(all(
not(serde_derive_build = "source"),
target_arch = "x86_64",
target_os = "linux",
target_env = "gnu"
))]
#[cfg(not(serde_derive_build = "source"))]
include!("lib_precompiled.rs");
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