From 67738db10010fd28a8e997b5c8f83ea591b88a0e Mon Sep 17 00:00:00 2001
From: Travis Whitaker <pi.boy.travis@gmail.com>
Date: Wed, 6 May 2020 04:14:47 +0000
Subject: Build a threaded stage 1 if the bootstrapping GHC supports it.

---
 compiler/ghc.mk | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'compiler/ghc.mk')

diff --git a/compiler/ghc.mk b/compiler/ghc.mk
index 6a2dadc820..6e86b73e8d 100644
--- a/compiler/ghc.mk
+++ b/compiler/ghc.mk
@@ -194,6 +194,12 @@ ifeq "$(GhcThreaded)" "YES"
 compiler_stage2_CONFIGURE_OPTS += --ghc-option=-optc-DTHREADED_RTS
 endif
 
+# If the bootstrapping GHC supplies the threaded RTS, then we can have a
+# threaded stage 1 too.
+ifeq "$(GhcThreadedRts)" "YES"
+compiler_stage1_CONFIGURE_OPTS += --ghc-option=-optc-DTHREADED_RTS
+endif
+
 ifeq "$(GhcWithNativeCodeGen)" "YES"
 compiler_stage1_CONFIGURE_OPTS += --flags=ncg
 compiler_stage2_CONFIGURE_OPTS += --flags=ncg
-- 
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