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-rw-r--r--compiler/rustc_driver/Cargo.toml2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/rustc_driver/Cargo.toml b/compiler/rustc_driver/Cargo.toml
index 872f946bf7d..fd2ca5beade 100644
--- a/compiler/rustc_driver/Cargo.toml
+++ b/compiler/rustc_driver/Cargo.toml
@@ -39,3 +39,5 @@ winapi = { version = "0.3", features = ["consoleapi", "debugapi", "processenv"]
 [features]
 llvm = ['rustc_interface/llvm']
 max_level_info = ['rustc_log/max_level_info']
+rustc_use_parallel_compiler = ['rustc_data_structures/rustc_use_parallel_compiler', 'rustc_interface/rustc_use_parallel_compiler',
+    'rustc_middle/rustc_use_parallel_compiler']