From ab6861f88b781b3e95ee67c01889b2c3f9f23e4d Mon Sep 17 00:00:00 2001
From: Alexander Puck Neuwirth <alexander@neuwirth-informatik.de>
Date: Sun, 14 Apr 2024 11:18:52 +0200
Subject: [PATCH] Fix missing quotes on CXXFLAGS

---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 8bd5411..5c940ee 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,7 +43,7 @@ AC_CONFIG_HEADERS([config/config.h include/LHAPDF/Version.h])
 
 
 ## Set default C++ optimisation level to -O3 and drop the -g debug flag
-if test -z $CXXFLAGS; then
+if test -z "$CXXFLAGS"; then
     CXXFLAGS='-O3'
 fi
 
-- 
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