[cairo] SVG Newbie

[Peter Laurens]

Hi, I am new to Cairo, and am having some trouble getting the basics  
down about rendering SVGs.

I have attempted to take the example snippet and just use it to  
render to an SVG file to a PNG, that's all my needs are really. Here  
is my code:

#include <stdio.h>
#include <cairo.h>
#include <cairo-svg.h>

int main (int argc, char const* argv[])
{
	// 1
	cairo_surface_t *surface;
	surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 250, 100);
	cairo_t *cr;
	cr = cairo_create(surface);
	
	// 2
	svg_cairo_t  *svgc;
	unsigned int  w, h;

	snippet_normalize (cr, width, height);

	svg_cairo_create (&svgc);

	svg_cairo_parse (svgc, "barChart.svg");
	svg_cairo_get_size (svgc, &w, &h);
	cairo_scale (cr, 1.0/w, 1.0/h);
	svg_cairo_render (svgc, cr);

	svg_cairo_destroy (svgc);

	// 3
	cairo_destroy(cr);
	cairo_surface_write_to_png(surface, "output.png");
	cairo_surface_destroy(surface);
	
	return 0;
}

Now there are a couple obvious things there that are going to cause  
compile errors I know, like I haven't set the variables 'width' and  
'height', but I get problems with some of the SVG functions, here's  
what the compiler says:

cairo_test.c: In function 'main':
cairo_test.c:16: error: 'svg_cairo_t' undeclared (first use in this  
function)
cairo_test.c:16: error: (Each undeclared identifier is reported only  
once
cairo_test.c:16: error: for each function it appears in.)
cairo_test.c:16: error: 'svgc' undeclared (first use in this function)
cairo_test.c:19: warning: implicit declaration of function  
'snippet_normalize'
cairo_test.c:19: error: 'width' undeclared (first use in this function)
cairo_test.c:19: error: 'height' undeclared (first use in this function)
cairo_test.c:21: warning: implicit declaration of function  
'svg_cairo_create'
cairo_test.c:23: warning: implicit declaration of function  
'svg_cairo_parse'
cairo_test.c:24: warning: implicit declaration of function  
'svg_cairo_get_size'
cairo_test.c:26: warning: implicit declaration of function  
'svg_cairo_render'
cairo_test.c:28: warning: implicit declaration of function  
'svg_cairo_destroy'

Can anyone help advise me on what I've done wrong here - I'm also  
unsure of my using the SVG stuff in relation to the cairo surface etc.

Any help is much appreciated,

Thanks in advance,

- Peter