tangram install error

gistfile1.txt

[ 99%] Building CXX object tangram-es/core/CMakeFiles/core.dir/src/text/textUtil.cpp.o
Linking CXX static library libcore.a
[ 99%] Built target core
[ 99%] Swig source
Scanning dependencies of target _tangram
[ 99%] Building CXX object CMakeFiles/_tangram.dir/tangramPYTHON_wrap.cxx.o
In file included from /home/pi/tangram-py/tangram/build/tangramPYTHON_wrap.cxx:3039:0:
/home/pi/tangram-py/tangram/src/tangram-proxy.h:24:61: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
 void init(int width, int height, char * style = "scene.yaml");
                                                             ^
/home/pi/tangram-py/tangram/build/tangramPYTHON_wrap.cxx: In function ‘PyObject* _wrap_init__SWIG_1(PyObject*, PyObject*)’:
/home/pi/tangram-py/tangram/build/tangramPYTHON_wrap.cxx:3707:17: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
   init(arg1,arg2);
                 ^
[ 99%] Building CXX object CMakeFiles/_tangram.dir/src/context.cpp.o
In file included from /home/pi/tangram-py/tangram/src/context.h:3:0,
                 from /home/pi/tangram-py/tangram/src/context.cpp:1:
/home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:59:13: warning: ‘void glBindVertexArray(GLuint)’ defined but not used [-Wunused-function]
 static void glBindVertexArray(GLuint array) {}
             ^
/home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:60:13: warning: ‘void glDeleteVertexArrays(GLsizei, const GLuint*)’ defined but not used [-Wunused-function]
 static void glDeleteVertexArrays(GLsizei n, const GLuint *arrays) {}
             ^
/home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:61:13: warning: ‘void glGenVertexArrays(GLsizei, GLuint*)’ defined but not used [-Wunused-function]
 static void glGenVertexArrays(GLsizei n, GLuint *arrays) {}
             ^
[ 99%] Building CXX object CMakeFiles/_tangram.dir/src/tangram-proxy.cpp.o
In file included from /home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:53:0,
                 from /home/pi/tangram-py/tangram/src/context.h:3,
                 from /home/pi/tangram-py/tangram/src/tangram-proxy.cpp:10:
/opt/vc/include/GLES2/gl2.h:78:0: warning: "GL_FALSE" redefined
 #define GL_FALSE                          (GLboolean)0
 ^
In file included from /home/pi/tangram-py/tangram/tangram-es/core/src/gl/texture.h:3:0,
                 from /home/pi/tangram-py/tangram/tangram-es/core/src/debug/textDisplay.h:7,
                 from /home/pi/tangram-py/tangram/src/tangram-proxy.cpp:5:
/home/pi/tangram-py/tangram/tangram-es/core/src/gl.h:64:0: note: this is the location of the previous definition
 #define GL_FALSE                        0
 ^
In file included from /home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:53:0,
                 from /home/pi/tangram-py/tangram/src/context.h:3,
                 from /home/pi/tangram-py/tangram/src/tangram-proxy.cpp:10:
/opt/vc/include/GLES2/gl2.h:79:0: warning: "GL_TRUE" redefined
 #define GL_TRUE                           (GLboolean)1
 ^
In file included from /home/pi/tangram-py/tangram/tangram-es/core/src/gl/texture.h:3:0,
                 from /home/pi/tangram-py/tangram/tangram-es/core/src/debug/textDisplay.h:7,
                 from /home/pi/tangram-py/tangram/src/tangram-proxy.cpp:5:
/home/pi/tangram-py/tangram/tangram-es/core/src/gl.h:65:0: note: this is the location of the previous definition
 #define GL_TRUE                         1
 ^
In file included from /home/pi/tangram-py/tangram/src/tangram-proxy.cpp:1:0:
/home/pi/tangram-py/tangram/src/tangram-proxy.h:24:61: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
 void init(int width, int height, char * style = "scene.yaml");
                                                             ^
In file included from /home/pi/tangram-py/tangram/src/context.h:3:0,
                 from /home/pi/tangram-py/tangram/src/tangram-proxy.cpp:10:
/home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:59:13: warning: ‘void glBindVertexArray(GLuint)’ defined but not used [-Wunused-function]
 static void glBindVertexArray(GLuint array) {}
             ^
/home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:60:13: warning: ‘void glDeleteVertexArrays(GLsizei, const GLuint*)’ defined but not used [-Wunused-function]
 static void glDeleteVertexArrays(GLsizei n, const GLuint *arrays) {}
             ^
/home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:61:13: warning: ‘void glGenVertexArrays(GLsizei, GLuint*)’ defined but not used [-Wunused-function]
 static void glGenVertexArrays(GLsizei n, GLuint *arrays) {}
             ^
[100%] Building CXX object CMakeFiles/_tangram.dir/src/platform_posix.cpp.o
In file included from /home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:53:0,
                 from /home/pi/tangram-py/tangram/src/context.h:3,
                 from /home/pi/tangram-py/tangram/src/platform_posix.cpp:3:
/opt/vc/include/GLES2/gl2.h:78:0: warning: "GL_FALSE" redefined
 #define GL_FALSE                          (GLboolean)0
 ^
In file included from /home/pi/tangram-py/tangram/tangram-es/core/src/gl/texture.h:3:0,
                 from /home/pi/tangram-py/tangram/tangram-es/core/src/debug/textDisplay.h:7,
                 from /home/pi/tangram-py/tangram/tangram-es/core/src/log.h:4,
                 from /home/pi/tangram-py/tangram/src/platform_posix.cpp:2:
/home/pi/tangram-py/tangram/tangram-es/core/src/gl.h:64:0: note: this is the location of the previous definition
 #define GL_FALSE                        0
 ^
In file included from /home/pi/tangram-py/tangram/tangram-es/core/common/platform_gl.h:53:0,
                 from /home/pi/tangram-py/tangram/src/context.h:3,
                 from /home/pi/tangram-py/tangram/src/platform_posix.cpp:3:
/opt/vc/include/GLES2/gl2.h:79:0: warning: "GL_TRUE" redefined
 #define GL_TRUE                           (GLboolean)1
 ^
In file included from /home/pi/tangram-py/tangram/tangram-es/core/src/gl/texture.h:3:0,
                 from /home/pi/tangram-py/tangram/tangram-es/core/src/debug/textDisplay.h:7,
                 from /home/pi/tangram-py/tangram/tangram-es/core/src/log.h:4,
                 from /home/pi/tangram-py/tangram/src/platform_posix.cpp:2:
/home/pi/tangram-py/tangram/tangram-es/core/src/gl.h:65:0: note: this is the location of the previous definition
 #define GL_TRUE                         1
 ^
/home/pi/tangram-py/tangram/src/platform_posix.cpp:29:24: fatal error: fontconfig.h: No such file or directory
 #include <fontconfig.h>
                        ^
compilation terminated.
CMakeFiles/_tangram.dir/build.make:131: recipe for target 'CMakeFiles/_tangram.dir/src/platform_posix.cpp.o' failed
make[2]: *** [CMakeFiles/_tangram.dir/src/platform_posix.cpp.o] Error 1
CMakeFiles/Makefile2:69: recipe for target 'CMakeFiles/_tangram.dir/all' failed
make[1]: *** [CMakeFiles/_tangram.dir/all] Error 2
Makefile:137: recipe for target 'all' failed
make: *** [all] Error 2
pi@raspberrypi:~/tangram-py/tangram $