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build.rs
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build.rs
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/*
* Copyright (C) 2022 taylor.fish <contact@taylor.fish>
*
* This file is part of btree-vec.
*
* btree-vec is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* btree-vec is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with btree-vec. If not, see <https://www.gnu.org/licenses/>.
*/
fn has_allocator_api() -> bool {
#[cfg(feature = "allocator-fallback")]
if allocator_fallback::HAS_ALLOCATOR_API {
return true;
}
cfg!(feature = "allocator_api")
}
fn main() {
if cfg!(any(feature = "allocator_api", feature = "allocator-fallback")) {
println!("cargo:rustc-cfg=any_allocator_api");
}
if has_allocator_api() {
println!("cargo:rustc-cfg=has_allocator_api");
}
println!("cargo:rerun-if-changed=build.rs");
}