From 52fa8760aeef38abbab0484a6978adaf4f100f90 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 15 Jul 2009 16:37:25 +0100
Subject: Add OpenVG backend.
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Based on the work by Øyvind Kolås and Pierre Tardy -- many thanks to
Pierre for pushing this backend for inclusion as well as testing and
reviewing my initial patch. And many more thanks to pippin for writing the
backend in the first place!

Hacked and chopped by myself into a suitable basis for a backend. Quite a
few issues remain open, but would seem to be ready for testing on suitable
hardware.
---
 configure.ac | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index de1be8fd5..2d4d5bb6f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -242,6 +242,49 @@ CAIRO_ENABLE_SURFACE_BACKEND(directfb, directfb, no, [
 
 dnl ===========================================================================
 
+CAIRO_ENABLE_SURFACE_BACKEND(vg, OpenVG, no, [
+  dnl There is no pkgconfig for OpenVG; lets do a header check
+  AC_CHECK_HEADER(VG/openvg.h,, [use_vg="no (OpenVG headers not found)"])
+  if test "x$use_vg" = "xyes"; then
+      vg_NONPKGCONFIG_CFLAGS=
+      vg_NONPKGCONFIG_LIBS="-lOpenVG"
+      need_egl_functions=yes
+      need_glx_functions=yes
+  fi
+])
+
+CAIRO_ENABLE_FUNCTIONS(egl, EGL, auto, [
+  if test "x$need_egl_functions" = "xyes"; then
+    AC_CHECK_HEADER(EGL/egl.h,, [use_egl="no (EGL headers not found)"])
+    if test "x$use_egl" = "xyes"; then
+      egl_NONPKGCONFIG_CFLAGS=
+      egl_NONPKGCONFIG_LIBS=
+      for lib in EGL egl13 egl12 egl11; do
+	if test -z "$egl_NONPKGCONFIG_LIBS"; then
+          AC_CHECK_LIB($lib, eglGetError, egl_NONPKGCONFIG_LIBS="-l$lib")
+	fi
+      done
+      if test -z "$egl_NONPKGCONFIG_LIBS"; then
+        use_egl="no (EGL library not found)"
+      fi
+    fi
+  else
+      use_egl="no (not required by any backend)"
+  fi
+])
+
+CAIRO_ENABLE_FUNCTIONS(glx, GLX, auto, [
+  if test "x$need_glx_functions" = "xyes"; then
+    AC_CHECK_HEADER(GL/glx.h,, [use_glx="no (GLX headers not found)"])
+    glx_NONPKGCONFIG_CFLAGS=
+    glx_NONPKGCONFIG_LIBS="-lGL"
+  else
+      use_glx="no (not required by any backend)"
+  fi
+])
+
+dnl ===========================================================================
+
 any2ppm_cs=no
 CAIRO_ENABLE_SURFACE_BACKEND(script, script, no, [
   any2ppm_cs=yes
-- 
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