Can I trick base into installing ports that are built against libc++ on systems configured to stdlib=libc++ ?

[Ken Cunningham]

Well blow me over, Josh. It does actually work.

I know all the clang ports clang-3.7 and up are built against libc++.

On my 10.6.8 system configured with cxx_stdlib=libc++, 

sudo port -v -b install clang-6.0 cxx_stdlib=libstdc++

downloads a perfectly workable clang-6.0 binary from the MacPorts archive site that has no issues when it runs through the rev-upgrade link check stage.

So -- that's kinda useful for me, I think.

Ken



On 2019-03-31, at 9:34 PM, Ken Cunningham wrote:

> I doubt this is possible, but it strikes me that a number of big ports, like clang-8.0, are actually forced in the portfile to build against libc++.
> 
> And my 10.6.8 system is configured to use stdlib=libc++.
> 
> But base can't rationalize this due to I suppose lack of any data showing this is how things are set up, and so forces me to build them anyway, even though the downloaded binary would be just fine for me.
> 
> Any tricky way to get around this? Rebuilding clang for a revbump takes a couple of hours at least.
> 
> Best,
> 
> Ken
> 
>