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Re: How to force clang to use libc++?

On Tue, 29 Jun 2021 15:46:00 +0000
"hung.nguyengia" <> wrote:

> I'm trying to use pkgsrc with clang as the compiler. Clang by default still uses libstdc++ as the standard library. I found I could force it to use libc++ with this line in mk.conf:
> CXXFLAGS+= -stdlib=libc++
> But lang/nodejs still fails to build. I found when compiling clang used libc++ headers so compilation when really straight forward but when linking it still default to link with libstdc++ so this cause the problem.
> What is the correct way to force clang to use libc++?

These kind of system-wide options may be better suited in the compiler
wrappers than CXXFLAGS:

CWRAPPERS_APPEND.cxx+= -stdlib=libc++

If the package tries to link manually with ld(1) you may need this also:

BUILDLINK_TRANSFORM+=  l:stdc++:libc++

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