From 02a7fc69ede188073c583b1a014c4e4240e5442f Mon Sep 17 00:00:00 2001
From: Qian Jianhua <qianjh@fujitsu.com>
Date: Mon, 25 Apr 2022 20:32:04 +0800
Subject: [PATCH] pgplot: fix syntax error in recipe (#30270)

---
 var/spack/repos/builtin/packages/pgplot/package.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/var/spack/repos/builtin/packages/pgplot/package.py b/var/spack/repos/builtin/packages/pgplot/package.py
index 9664ea652ba..6b867dc9ffa 100644
--- a/var/spack/repos/builtin/packages/pgplot/package.py
+++ b/var/spack/repos/builtin/packages/pgplot/package.py
@@ -57,6 +57,7 @@ def edit(self, spec, prefix):
         if '+png' in spec:
             libs += ' ' + self.spec['libpng'].libs.ld_flags
 
+        sub = {}
         if spec.satisfies('%gcc'):
             fib = " -fallow-invalid-boz" if spec.satisfies('%gcc@10:') else ""