Fix build problem on Snow Leopard

Makefile.in

@@ -7,6 +7,12 @@ AR ?= ar
 RUSTC ?= rustc
 RUSTFLAGS ?=
 
+ifeq ($(shell uname -s),Darwin)
+ifeq ($(shell sw_vers | grep -c 10.6),1)
+RUSTFLAGS += --cfg mac_10_6
+endif
+endif
+
 RUST_SRC=$(shell find $(VPATH)/. -type f -name '*.rs')
 
 .PHONY: all

gl2.rs

@@ -401,6 +401,7 @@ pub fn bind_texture(target: GLenum, texture: GLuint) {
     }
 }
 
+#[cfg(not(target_os="macos", mac_10_6))]
 pub fn bind_vertex_array(array: GLuint) {
     unsafe {
         ll::glBindVertexArray(array);
@@ -652,6 +653,7 @@ pub fn gen_textures(n: GLsizei) -> ~[GLuint] {
     }
 }
 
+#[cfg(not(target_os="macos", mac_10_6))]
 pub fn gen_vertex_arrays(n: GLsizei) -> ~[GLuint] {
     unsafe {
         let result = from_elem(n as uint, 0 as GLuint);
@@ -983,6 +985,7 @@ pub fn glBindRenderbuffer(++target: GLenum, ++renderbuffer: GLuint);
 
 pub fn glBindTexture(++target: GLenum, ++texture: GLuint);
 
+#[cfg(not(target_os="macos", mac_10_6))]
 pub fn glBindVertexArray(++array: GLuint);
 
 pub fn glBlendColor(++red: GLclampf, ++green: GLclampf, ++blue: GLclampf, ++alpha: GLclampf);
@@ -1081,6 +1084,7 @@ pub fn glGenRenderbuffers(++n: GLsizei, ++renderbuffers: *GLuint);
 
 pub fn glGenTextures(++n: GLsizei, ++textures: *GLuint);
 
+#[cfg(not(target_os="macos", mac_10_6))]
 pub fn glGenVertexArrays(++n: GLsizei, arrays: *GLuint);
 
 pub fn glGetActiveAttrib(++program: GLuint, ++index: GLuint, ++bufsize: GLsizei, ++length: *GLsizei, ++size: *GLint, ++_type: *GLenum, ++name: *GLchar);