diff -ruwN neverball-1.6.0/Makefile source/Makefile
--- neverball-1.6.0/Makefile	2014-05-21 07:21:43.000000000 -0600
+++ source/Makefile	2023-09-09 20:03:22.113348963 -0600
@@ -38,11 +38,11 @@
 ifeq ($(DEBUG),1)
 	CFLAGS   := -g
 	CXXFLAGS := -g
-	CPPFLAGS :=
+	CPPFLAGS +=
 else
 	CFLAGS   := -O2
 	CXXFLAGS := -O2
-	CPPFLAGS := -DNDEBUG
+	CPPFLAGS += -DNDEBUG
 endif
 
 #------------------------------------------------------------------------------
@@ -64,8 +64,8 @@
 
 # Preprocessor...
 
-SDL_CPPFLAGS := $(shell sdl2-config --cflags)
-PNG_CPPFLAGS := $(shell libpng-config --cflags)
+SDL_CPPFLAGS := $(shell $(PKG_CONFIG) sdl2 --cflags)
+PNG_CPPFLAGS := $(shell $(PKG_CONFIG) libpng --cflags)
 
 ALL_CPPFLAGS := $(SDL_CPPFLAGS) $(PNG_CPPFLAGS) -Ishare
 
@@ -124,8 +124,8 @@
 #------------------------------------------------------------------------------
 # Libraries
 
-SDL_LIBS := $(shell sdl2-config --libs)
-PNG_LIBS := $(shell libpng-config --libs)
+SDL_LIBS := $(shell $(PKG_CONFIG) sdl2 --libs)
+PNG_LIBS := $(shell $(PKG_CONFIG) libpng --libs)
 
 ifeq ($(ENABLE_FS),stdio)
 FS_LIBS :=
@@ -148,7 +148,7 @@
 endif
 endif
 
-OGL_LIBS := -lGL
+OGL_LIBS := -lorbital $(shell $(PKG_CONFIG) osmesa --libs)
 
 ifeq ($(PLATFORM),mingw)
 	ifneq ($(ENABLE_NLS),0)
@@ -175,8 +175,8 @@
 	                                           /usr/local/lib))
 endif
 
-OGG_LIBS := -lvorbisfile
-TTF_LIBS := -lSDL2_ttf
+OGG_LIBS := $(shell $(PKG_CONFIG) ogg vorbis vorbisfile --libs)
+TTF_LIBS := $(shell $(PKG_CONFIG) SDL2_ttf --libs) -lfreetype
 
 ALL_LIBS := $(HMD_LIBS) $(TILT_LIBS) $(INTL_LIBS) $(TTF_LIBS) \
 	$(OGG_LIBS) $(SDL_LIBS) $(OGL_LIBS) $(BASE_LIBS)
@@ -411,11 +411,11 @@
 
 all : $(BALL_TARG) $(PUTT_TARG) $(MAPC_TARG) sols locales desktops
 
-ifeq ($(ENABLE_HMD),libovr)
+#ifeq ($(ENABLE_HMD),libovr)
 LINK := $(CXX) $(ALL_CXXFLAGS)
-else
-LINK := $(CC) $(ALL_CFLAGS)
-endif
+#else
+#LINK := $(CC) $(ALL_CFLAGS)
+#endif
 
 $(BALL_TARG) : $(BALL_OBJS)
 	$(LINK) -o $(BALL_TARG) $(BALL_OBJS) $(LDFLAGS) $(ALL_LIBS)
diff -ruwN neverball-1.6.0/share/text.h source/share/text.h
--- neverball-1.6.0/share/text.h	2014-05-21 07:21:43.000000000 -0600
+++ source/share/text.h	2023-09-09 20:02:10.117248865 -0600
@@ -15,7 +15,7 @@
 
 /*---------------------------------------------------------------------------*/
 
-char text_input[MAXSTR];
+extern char text_input[MAXSTR];
 
 void text_input_start(void (*cb)(int typing));
 void text_input_stop(void);