Fix gles .pc file generation
diff --git a/configure.ac b/configure.ac
index 354c220..5a0ee13 100644
--- a/configure.ac
+++ b/configure.ac
@@ -678,7 +678,10 @@
 AC_SUBST([GL_PC_CFLAGS])
 AC_SUBST([DRI_PC_REQ_PRIV])
 AC_SUBST([GLESv1_LIB_DEPS])
+AC_SUBST([GLESv1_CM_PC_LIB_PRIV])
 AC_SUBST([GLESv2_LIB_DEPS])
+AC_SUBST([GLESv2_PC_LIB_PRIV])
+
 
 dnl
 dnl More X11 setup