From f5725ff6f23aa2ac77c11db9e414329da5ba56bf Mon Sep 17 00:00:00 2001
From: Vladislav Valtchev <vladislav.valtchev@gmail.com>
Date: Tue, 19 Nov 2019 14:13:56 +0200
Subject: [PATCH] Introduce the NOSDL option in the Makefile

For many reasons, the SDL library might not be available on some systems.
Therefore, it's useful to offer a way to build without it. With this patch,
it's possible to build fbDoom without SDL in the following way:

    make NOSDL=1
---
 fbdoom/Makefile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/fbdoom/Makefile b/fbdoom/Makefile
index cb88745..fb32c7b 100644
--- a/fbdoom/Makefile
+++ b/fbdoom/Makefile
@@ -23,7 +23,11 @@ CC=$(CROSS_COMPILE)gcc  # gcc or g++
 CFLAGS+=-ggdb3 -Os
 LDFLAGS+=-Wl,--gc-sections
 CFLAGS+=-ggdb3 -Wall -DNORMALUNIX -DLINUX -DSNDSERV # -DUSEASM
-LIBS+=-lm -lc -lSDL
+LIBS+=-lm -lc
+
+ifneq ($(NOSDL),1)
+	LIBS+= -lSDL
+endif
 
 # subdirectory for objects
 OBJDIR=build