clang headers aren't installed or linked in /usr/include/clang-c

[Shawn Rutledge]

This causes a problem building qdoc on Ubuntu 18.04:

https://bugreports.qt.io/browse/QTBUG-69044

In summary, #include <clang-c/Index.h> doesn't work unless one adds an extra -I include path. On some other Linux OSes, that's not necessary. So I wonder if this is a matter of policy to have these headers only in /usr/lib/llvm-6.0/include/clang-c, or an oversight?

It will be an issue for any software that attempts to reuse parts of clang to build other tools.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: libclang-6.0-dev 1:6.0-1ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Jun 26 08:52:55 2018
SourcePackage: llvm-toolchain-6.0
UpgradeStatus: No upgrade log present (probably fresh install)

[Sylvestre Ledru (sylvestre)]

You should report this bug on the Debian side as the work is happening there.