From fdeea3d94277eeb9d32a05670030214577f19217 Mon Sep 17 00:00:00 2001
From: Weihang Lo <me@weihanglo.tw>
Date: Mon, 6 May 2024 18:22:09 -0400
Subject: [PATCH] docs: add missing `CARGO_MAKEFLAGS` env for plugins

This was done in <https://github.com/rust-lang/cargo/pull/10511>.
---
 src/doc/src/reference/environment-variables.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/doc/src/reference/environment-variables.md b/src/doc/src/reference/environment-variables.md
index 516f90fec439..45de5329b28f 100644
--- a/src/doc/src/reference/environment-variables.md
+++ b/src/doc/src/reference/environment-variables.md
@@ -416,5 +416,8 @@ Cargo exposes this environment variable to 3rd party subcommands
 (ie. programs named `cargo-foobar` placed in `$PATH`):
 
 * `CARGO` --- Path to the `cargo` binary performing the build.
+* `CARGO_MAKEFLAGS` --- Contains parameters needed for Cargo's [jobserver]
+  implementation to parallelize subprocesses.
+  This is set only when Cargo detects the existence of a jobserver.
 
 For extended information about your environment you may run `cargo metadata`.