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authorbors <bors@rust-lang.org>2023-12-10 21:48:53 +0000
committerbors <bors@rust-lang.org>2023-12-10 21:48:53 +0000
commitd86d65bbc19b928387f68427fcc3a0da498d8a19 (patch)
tree4cb4a17ba1d40e64b5a126b044742176c49eace9 /compiler/rustc_session/src/options.rs
parentec4176167b964debee77015d0c67720639f9d673 (diff)
parentdc2f77aad617400b68ba607ca59bbf0121000b1f (diff)
downloadrust-d86d65bbc19b928387f68427fcc3a0da498d8a19.tar.gz
rust-d86d65bbc19b928387f68427fcc3a0da498d8a19.zip
Auto merge of #118368 - GuillaumeGomez:env-flag, r=Nilstrieb
Implement `--env` compiler flag (without `tracked_env` support)

Part of https://github.com/rust-lang/rust/issues/80792.
Implementation of https://github.com/rust-lang/compiler-team/issues/653.
Not an implementation of https://github.com/rust-lang/rfcs/pull/2794.

It adds the `--env` compiler flag option which allows to set environment values used by `env!` and `option_env!`.

Important to note: When trying to retrieve an environment variable value, it will first look into the ones defined with `--env`, and if there isn't one, then only it will look into the environment variables. So if you use `--env PATH=a`, then `env!("PATH")` will return `"a"` and not the actual `PATH` value.

As mentioned in the title, `tracked_env` support is not added here. I'll do it in a follow-up PR.

r? rust-lang/compiler
Diffstat (limited to 'compiler/rustc_session/src/options.rs')
-rw-r--r--compiler/rustc_session/src/options.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_session/src/options.rs b/compiler/rustc_session/src/options.rs
index b1cf43f471a..d666c5d4d70 100644
--- a/compiler/rustc_session/src/options.rs
+++ b/compiler/rustc_session/src/options.rs
@@ -3,6 +3,7 @@ use crate::config::*;
 use crate::search_paths::SearchPath;
 use crate::utils::NativeLib;
 use crate::{lint, EarlyErrorHandler};
+use rustc_data_structures::fx::FxIndexMap;
 use rustc_data_structures::profiling::TimePassesFormat;
 use rustc_data_structures::stable_hasher::Hash64;
 use rustc_errors::ColorConfig;
@@ -150,6 +151,9 @@ top_level_options!(
 
         target_triple: TargetTriple [TRACKED],
 
+        /// Effective logical environment used by `env!`/`option_env!` macros
+        logical_env: FxIndexMap<String, String> [TRACKED],
+
         test: bool [TRACKED],
         error_format: ErrorOutputType [UNTRACKED],
         diagnostic_width: Option<usize> [UNTRACKED],