diff -ruN mupdf-1.14.0-source.orig/Makerules mupdf-1.14.0-source/Makerules
--- mupdf-1.14.0-source.orig/Makerules	2018-11-02 06:57:12.114012496 +0100
+++ mupdf-1.14.0-source/Makerules	2018-11-02 10:11:56.717232992 +0100
@@ -80,13 +80,6 @@
   HAVE_GLUT := yes
   SYS_GLUT_CFLAGS := -Wno-deprecated-declarations
   SYS_GLUT_LIBS := -framework GLUT -framework OpenGL
-  CC = xcrun cc
-  AR = xcrun ar
-  LD = xcrun ld
-  RANLIB = xcrun ranlib
-
-else ifeq ($(OS),Linux)
-  HAVE_OBJCOPY := yes
 
   ifeq ($(shell pkg-config --exists freetype2 && echo yes),yes)
 	SYS_FREETYPE_CFLAGS := $(shell pkg-config --cflags freetype2)
@@ -119,12 +112,6 @@
 	SYS_CURL_LIBS := $(shell pkg-config --libs libcurl)
   endif
 
-  HAVE_GLUT := yes
-  ifeq ($(HAVE_GLUT),yes)
-	SYS_GLUT_CFLAGS :=
-	SYS_GLUT_LIBS := -lglut -lGL
-  endif
-
   HAVE_X11 := $(shell pkg-config --exists x11 xext && echo yes)
   ifeq ($(HAVE_X11),yes)
 	X11_CFLAGS := $(shell pkg-config --cflags x11 xext)