From b0b521001e1b93646a32a5705b05fe53ed0cdae7 Mon Sep 17 00:00:00 2001
From: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Date: Mon, 5 Jul 2021 21:45:01 +0100
Subject: [PATCH] extend/ENV/super: allow `O{1,0}` to accept a block

This makes `ENV.O{1,0}` behave like `ENV.deparallelize`.

This should also allow us to build libgcrypt's jitter entropy collector,
which we currently disable because it interacts poorly with our compiler
shims. See #11201.
---
 Library/Homebrew/extend/ENV/super.rb | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/extend/ENV/super.rb b/Library/Homebrew/extend/ENV/super.rb
index e2ce2e6262..03af1e7b6a 100644
--- a/Library/Homebrew/extend/ENV/super.rb
+++ b/Library/Homebrew/extend/ENV/super.rb
@@ -338,8 +338,12 @@ module Superenv
   end
 
   %w[O1 O0].each do |opt|
-    define_method opt do
-      send(:[]=, "HOMEBREW_OPTIMIZATION_LEVEL", opt)
+    define_method opt do |&block|
+      if block
+        with_env(HOMEBREW_OPTIMIZATION_LEVEL: opt) { block.call }
+      else
+        send(:[]=, "HOMEBREW_OPTIMIZATION_LEVEL", opt)
+      end
     end
   end
 end