File gimp-normalmap-fix-linker-flags.patch of Package gimp-normalmap

diff -Naur a/Makefile.linux b/Makefile.linux
--- a/Makefile.linux	2010-04-29 21:30:42.000000000 -0500
+++ b/Makefile.linux	2013-04-04 16:24:39.289401894 -0500
@@ -2,14 +2,14 @@
 GIMPTOOL=gimptool-2.0
 
 CC=gcc
-CFLAGS=-O3 -Wall `pkg-config --cflags gtk+-2.0 gtkglext-1.0 gimp-2.0`
+CFLAGS+=-O3 -Wall `pkg-config --cflags gtk+-2.0 gtkglext-1.0 gimp-2.0`
 
 TARGET=normalmap
 
 OBJS=normalmap.o preview3d.o scale.o
 
 LIBS=`pkg-config --libs gtk+-2.0 gtkglext-1.0 gimp-2.0 gimpui-2.0` \
--L/usr/X11R6/lib -lGLEW
+-L/usr/X11R6/lib -lGLEW -lGLU -lm
 
 all: $(TARGET)