MaskRay added a comment.
Regarding
/usr/include/x86_64-unknown-linux-gnu/c++/v1
/usr/include/c++/v1
With GCC multiarch, some `include` search paths are preceded by machine-os-env
specific suffix directories.
Note: 'vendor' is not there. So you may see `.../include/x86_64-linux-gnu` but
there is no `.../include/x86_64-{pc,unknown}-linux-gnu`
/usr/local/include/x86_64-linux-gnu # affected by sysroot, multiarch,
usually nonexistent
/usr/local/include # affected by sysroot
/tmp/opt/gcc-debug/include
/tmp/opt/gcc-debug/lib/gcc/x86_64-pc-linux-gnu/11.0.1/include-fixed
/tmp/opt/gcc-debug/lib/gcc/x86_64-pc-linux-gnu/11.0.1/../../../../x86_64-pc-linux-gnu/include
/usr/include/x86_64-linux-gnu # affected by sysroot, multiarch
/usr/include # affected by sysroot
On Debian x86_64, `/usr/include/x86_64-linux-gnu/` exists. Adding
`x86_64-pc-linux-gnu` (an possible value of `LLVM_DEFAULT_TARGET_TRIPLE`) may
add more confusion.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D89013/new/
https://reviews.llvm.org/D89013
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