Public bug reported:
Description: Ubuntu 16.04.2 LTS
Release: 16.04
clang-4.0:
Installed: 1:4.0~svn303688-1~exp1
Candidate: 1:4.0~svn304242-1~exp1
Version table:
1:4.0~svn304242-1~exp1 500
500 http://apt.llvm.org/xenial llvm-toolchain-xenial-4.0/main amd64
Packages
*** 1:4.0~svn303688-1~exp1 100
100 /var/lib/dpkg/status
First, I want to note that my clang-4.0 is from llvm's package and not
this package that I'm linked to, but in my (limited) understanding I
feel like this error is going to occur both ways. Please correct me if
I'm wrong.
ClangConfig.cmake is installed in
`/usr/share/llvm-4.0/cmake/ClangConfig.cmake` which is not by default
searched by cmake and needs to be remedied by adding a PATHS option to
the typical find_package command (i.e. `find_package(Clang REQUIRED
CONFIG PATHS "/usr/share/llvm-4.0/cmake/")`). The /usr directory isn't
listed in any of the list of directories searched here
https://cmake.org/cmake/help/v3.8/command/find_package.html, so this
choice seems a little odd to me.
Having remedied this by adding the option another error occurs with the
final line of ClangConfig.cmake where it attempts to
`include(${CLANG_CMAKE_DIR}/ClangTargets.cmake")`. This fails because
earlier CLANG_MAKE_DIR is set through `set(CLANG_CMAKE_DIR
"${CLANG_INSTALL_PREFIX}/lib/cmake/clang")` where CLANG_INSTALL_PREFIX
has been resolved earlier to be `/usr`. The file
`/usr/lib/cmake/clang/ClangMakeTargets.cmake` actually exists at
`/usr/share/llvm-4.0/cmake/ClangTargets.cmake`.
My first guess is that it was built in one directory and moved here
since the file seems to be a templated file like this https://github.com
/llvm-mirror/clang/blob/master/cmake/modules/ClangConfig.cmake.in that
gets built by this file https://github.com/llvm-
mirror/clang/blob/master/cmake/modules/CMakeLists.txt#L22.
** Affects: llvm-toolchain-4.0 (Ubuntu)
Importance: Undecided
Status: New
** Tags: clang cmake
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https://bugs.launchpad.net/bugs/1694845
Title:
ClangConfig.cmake in bad directory
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