How to make "clang on Windows" use LLVM libcxx instead of MSVC C++ library?

Asked Oct 18 '21 at 17:04

Active Oct 18 '21 at 17:04

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Follow-up question for Clang on Windows: how to disable the default MSVC compatibility?.

Context: "clang on Windows" uses MSVC C++ library:

$ /cygdrive/d/LLVM/13.0.0/bin/clang.exe P92092.C -fno-ms-compatibility -fno-ms-extensions
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.29.30133\include\vcruntime.h:364:18: error: expected ';' after top level declarator
_CRT_END_C_HEADER

Here we see that under -fno-ms-compatibility -fno-ms-extensions clang still uses MSVC C++ library.

Question: How to make "clang on Windows" use LLVM libcxx?

asked Oct 18 '21 at 17:04

pmor

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I'd imagine `-stdlib=libc++` will do the job – Alan Birtles Oct 18 '21 at 17:06
@AlanBirtles `clang: warning: argument unused during compilation: '-stdlib=libc++' [-Wunused-command-line-argument]`. Other ideas? – pmor Oct 18 '21 at 17:59

How to make "clang on Windows" use LLVM libcxx instead of MSVC C++ library?

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