From 12a85a7046503e6ff602663a1d054407a4e3f184 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Thu, 7 Nov 2019 15:20:02 -0500
Subject: [PATCH] SDL, SDL2: SDL{,2}_PATH may be undefined

---
 pkgs/development/libraries/SDL/setup-hook.sh  | 2 +-
 pkgs/development/libraries/SDL2/setup-hook.sh | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/SDL/setup-hook.sh b/pkgs/development/libraries/SDL/setup-hook.sh
index 20382f18f52..32a7d0d9554 100644
--- a/pkgs/development/libraries/SDL/setup-hook.sh
+++ b/pkgs/development/libraries/SDL/setup-hook.sh
@@ -1,6 +1,6 @@
 addSDLPath () {
   if [ -e "$1/include/SDL" ]; then
-    export SDL_PATH="$SDL_PATH $1/include/SDL"
+    export SDL_PATH="${SDL_PATH-}${SDL_PATH:+ }$1/include/SDL"
   fi
 }
 
diff --git a/pkgs/development/libraries/SDL2/setup-hook.sh b/pkgs/development/libraries/SDL2/setup-hook.sh
index 3acce9d473c..0119926491a 100644
--- a/pkgs/development/libraries/SDL2/setup-hook.sh
+++ b/pkgs/development/libraries/SDL2/setup-hook.sh
@@ -1,6 +1,6 @@
 addSDL2Path () {
   if [ -e "$1/include/SDL2" ]; then
-    export SDL2_PATH="$SDL2_PATH $1/include/SDL2"
+    export SDL2_PATH="${SDL2_PATH-}${SDL2_PATH:+ }$1/include/SDL2"
   fi
 }