How to install gcc11 with libgccjit ?

[Sasha Scott]

Hello,everyone, How to install gcc11 with libgccjit?

I see the gcc11 Portfile line 87-90
--------------------------
set gcc_configure_langs {c c++ objc obj-c++ lto fortran}
if {${subport} eq ${name}} {
lappend gcc_configure_langs jit
}
--------------------------

How to enable "gcc_configure_langs jit" ?
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