c3cc42fd41
When I originally implemented bug 1458161, this is how it was done, but it was suggested to use a configure-time check. This turned out to not be great, because the rust compiler changes regularly, and we don't run the configure tests when the version changes. When people upgraded their rust compiler to 1.27, the code subsequently failed to build because the features were still set for the previous version they had installed.
26 lines
976 B
Rust
26 lines
976 B
Rust
extern crate rustc_version;
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use rustc_version::{version, Version};
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fn main() {
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let ver = version().unwrap();
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let mut bootstrap = false;
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if ver >= Version::parse("1.24.0").unwrap() && ver < Version::parse("1.27.0").unwrap() {
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println!("cargo:rustc-cfg=feature=\"oom_with_global_alloc\"");
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bootstrap = true;
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} else if ver >= Version::parse("1.28.0-alpha").unwrap() && ver < Version::parse("1.29.0").unwrap() {
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println!("cargo:rustc-cfg=feature=\"oom_with_hook\"");
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bootstrap = true;
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} else if std::env::var("MOZ_AUTOMATION").is_ok() {
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panic!("Builds on automation must use a version of rust that supports OOM hooking")
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}
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// This is a rather awful thing to do, but we're only doing it on
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// versions of rustc that are not going to change the unstable APIs
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// we use from under us, all being already released or beta.
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if bootstrap {
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println!("cargo:rustc-env=RUSTC_BOOTSTRAP=1");
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}
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}
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