From faf9c604becc44135d6c5a7c8427982e203a327f Mon Sep 17 00:00:00 2001
From: James Le Cuirot <chewi@gentoo.org>
Date: Fri, 8 May 2020 11:26:18 +0100
Subject: [PATCH 1/2] Allow software rendering to be easily chosen over OpenGL
 with OPENGL=0

---
 Makefile | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index ebbd53a4..adabaa92 100644
--- a/Makefile
+++ b/Makefile
@@ -26,19 +26,26 @@ CPPFLAGS ?=
 LDFLAGS ?= $(OPTIMISE)
 LIBS ?=
 
+# set this to 0 to use software rendering instead of OpenGL
+OPENGL = 1
+
 # general things needed by Eureka
 CXXFLAGS += $(CXX_DIALECT)
-LIBS += -lGLU -lGL
 LIBS += -lz -lm
+FLTK_CONFIG_FLAGS =
 
-# add this for software rendering, remove '--use-gl' below, remove -lGL and -lGLU from LIBS
-# CXXFLAGS += -DNO_OPENGL
+ifeq ($(OPENGL),1)
+LIBS += -lGLU -lGL
+FLTK_CONFIG_FLAGS += --use-gl
+else
+CXXFLAGS += -DNO_OPENGL
+endif
 
 # FLTK flags (this assumes a system-wide FLTK installation)
 FLTK_CONFIG ?= fltk-config
 
-CXXFLAGS += $(shell $(FLTK_CONFIG) --use-images --use-gl --cxxflags)
-LDFLAGS  += $(shell $(FLTK_CONFIG) --use-images --use-gl  --ldflags)
+CXXFLAGS += $(shell $(FLTK_CONFIG) --use-images --cxxflags $(FLTK_CONFIG_FLAGS))
+LDFLAGS  += $(shell $(FLTK_CONFIG) --use-images --ldflags $(FLTK_CONFIG_FLAGS))
 
 # NOTE: the following is commented out since it does not work as expected.
 #       the --libs option gives us static libraries, but --ldflags option
-- 
2.26.2

From decee12e317e58128420771392b77c44a7c81122 Mon Sep 17 00:00:00 2001
From: James Le Cuirot <chewi@gentoo.org>
Date: Fri, 8 May 2020 11:27:49 +0100
Subject: [PATCH 2/2] Ensure bin directory is present before installing binary

It might not be when using DESTDIR.
---
 Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Makefile b/Makefile
index adabaa92..424ad4b5 100644
--- a/Makefile
+++ b/Makefile
@@ -158,6 +158,7 @@ stripped: all
 INSTALL_DIR=$(DESTDIR)$(PREFIX)/share/eureka
 
 install: all
+	install -d $(DESTDIR)$(PREFIX)/bin
 	install -m 755 $(PROGRAM) $(DESTDIR)$(PREFIX)/bin/
 	install -d $(INSTALL_DIR)/games
 	install -d $(INSTALL_DIR)/common
-- 
2.26.2