[egoboo] Use shell function for efficiency

[Bruno Wolff III]

commit cc8cd0b561ff66ed4d44e7e10a38130326a72bc2
Author: Bruno Wolff III <bruno at wolff.to>
Date:   Sun Mar 11 13:10:31 2012 -0500

    Use shell function for efficiency

 egoboo-opts.patch |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/egoboo-opts.patch b/egoboo-opts.patch
index 9ea9772..e3f6ab7 100644
--- a/egoboo-opts.patch
+++ b/egoboo-opts.patch
@@ -6,8 +6,8 @@
  CC      := gcc
 -INC     := -I. -I.. -I../enet/include ${SDLCONF_I} -I./extensions -I./file_formats -I./platform
 -LDFLAGS := ${SDLCONF_L} -L../enet/lib -lSDL_ttf -lSDL_mixer -lGL -lGLU -lSDL_image -lphysfs -lenet
-+INC     := `sdl-config --cflags` -I. -I./extensions -I./file_formats -I./platform
-+LDFLAGS := `sdl-config --libs` -lSDL_ttf -lSDL_mixer -lGL -lGLU -lSDL_image -lphysfs -lenet -lenet -lm
++INC     := $(shell sdl-config --cflags) -I. -I./extensions -I./file_formats -I./platform
++LDFLAGS := $(shell sdl-config --libs) -lSDL_ttf -lSDL_mixer -lGL -lGLU -lSDL_image -lphysfs -lenet -lenet -lm
  
  # use different options if the environmental variable PREFIX is defined
  ifdef ($(PREFIX),"")