+dnl HACK when building glx + glvnd we ship gl.pc, despite that glvnd should do it
+dnl Thus we need to use GL as a DSO name.
+if test "x$enable_libglvnd" = xyes -a "x$enable_glx" != xno; then
+ GL_PKGCONF_LIB="GL"
+else
+ GL_PKGCONF_LIB="$GL_LIB"
+fi
+AC_SUBST([GL_PKGCONF_LIB])
+