From 3ab93b6e2b002066b3d13dee0d15cb2dc4ece962 Mon Sep 17 00:00:00 2001
From: Cheng XU <git@xuc.me>
Date: Wed, 17 Jul 2019 16:57:01 +0800
Subject: [PATCH] elf: fix caching of dynamic_elf?

---
 Library/Homebrew/os/linux/elf.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/os/linux/elf.rb b/Library/Homebrew/os/linux/elf.rb
index 4e3a99a494..3b4e8f3211 100644
--- a/Library/Homebrew/os/linux/elf.rb
+++ b/Library/Homebrew/os/linux/elf.rb
@@ -71,7 +71,7 @@ module ELFShim
   def dynamic_elf?
     return @dynamic_elf if defined? @dynamic_elf
 
-    if which "readelf"
+    @dynamic_elf = if which "readelf"
       Utils.popen_read("readelf", "-l", to_path).include?(" DYNAMIC ")
     elsif which "file"
       !Utils.popen_read("file", "-L", "-b", to_path)[/dynamic|shared/].nil?