[cairo] [PATCH] configure.ac: configuration check to enable either gl or glesv2, not both at the same time

Ravi Nanjundappa nravi.n at samsung.com
Tue Aug 19 23:15:19 PDT 2014

A proposed solution for the discussion in
to avoid muliple definition of cairo_gl_* symbols when
both gl and glesv2 backends are enabled at the same time

Signed-off-by: Ravi Nanjundappa <nravi.n at samsung.com>
 configure.ac |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index 23f2054..4e28adf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -378,6 +378,10 @@ CAIRO_ENABLE_SURFACE_BACKEND(glesv2, OpenGLESv2, no, [
     glesv2_LIBS="$glesv2_LIBS -ldl"
+  if test "x$use_glesv2" = "xyes" -a "x$use_gl" = "xyes"; then
+      AC_MSG_ERROR([use either --enable-gl=yes or --enable-glesv2=yes. Not both at the same time.])
+  fi

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