From 159e26bb253229a6ab762f11c218aad2fc7e3b92 Mon Sep 17 00:00:00 2001
From: Thomas Bernard <miniupnp@free.fr>
Date: Sat, 27 Apr 2019 13:12:45 +0200
Subject: [PATCH] fix link with zlib.

GPX decoding uses zlib. It should be explicitely linked or else it produces
errors :

Linking ../bin/grafx2-sdl
/usr/bin/ld: ../obj/unix-sdl/miscfileformats.o: undefined reference to symbol 'uncompress'
//lib/x86_64-linux-gnu/libz.so.1: error adding symbols: DSO missing from command line
---
 src/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Makefile b/src/Makefile
index 49131031..a67bd9ba 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -635,7 +635,7 @@ endif
           COPT += -D_NETBSD_SOURCE
         endif
 
-        LOPT = -lm
+        LOPT = -lm -lz
         ifeq ($(API),sdl)
           LOPT += $(shell sdl-config --libs) -lSDL_image
           ifneq ($(NO_X11),1)