53c53
<                     --disable-cxx --enable-shared --enable-static \
---
>                     --disable-cxx --disable-hl --enable-shared --enable-static \
60c60
< default_variants    +cxx
---
> default_variants    +cxx +hl
103a104,111
> variant hl description {
>     Enable High Level interfance.
>   +hl is EXPERIMENTAL with +threadsafe
> } {
>     configure.args-delete       --disable-hl
>     configure.args-append       --enable-hl
> }
> 
138c146
<     configure.args-append       --enable-threadsafe --with-pthread --disable-hl
---
>     configure.args-append       --enable-threadsafe --with-pthread
141a150
>                                      [ variant_isset hl ] ||