openharmony/third_party_rust_serde
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Build using relative path in repo if Windows lost symlink

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This commit is contained in:
David Tolnay 2021-04-09 14:15:58 -07:00
parent b53ebef438
commit dc4c31eb50
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2 changed files with 14 additions and 1 deletions
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12
serde_derive_internals/build.rs Normal file
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@ -0,0 +1,12 @@
use std::path::Path;
fn main() {
// Sometimes on Windows the git checkout does not correctly wire up the
// symlink from serde_derive_internals/src to serde_derive/src/internals.
// When this happens we'll just build based on relative paths within the git
// repo.
let mod_behind_symlink = Path::new("src/mod.rs");
if !mod_behind_symlink.exists() {
println!("cargo:rustc-cfg=serde_build_from_git");
}
}

3
serde_derive_internals/lib.rs
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@ -40,7 +40,8 @@ extern crate syn;
extern crate proc_macro2;
extern crate quote;
#[path = "src/mod.rs"]
#[cfg_attr(serde_build_from_git, path = "../serde_derive/src/internals/mod.rs")]
#[cfg_attr(not(serde_build_from_git), path = "src/mod.rs")]
mod internals;
pub use internals::*;