Bug#839234: llvm-{3.9, 4.0}-dev: LLVMConfig.cmake is installed into wrong location.

[Roman Lebedev]

Package: llvm-3.9-dev
Version: 1:3.9-1
Severity: important

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Hi.

With llvm-3.9, the installation directory of LLVMConfig.cmake has changed:

/usr/lib$ find -name LLVMConfig.cmake
./llvm-3.8/share/llvm/cmake/LLVMConfig.cmake
./llvm-4.0/lib/cmake/llvm/LLVMConfig.cmake
./llvm-3.9/lib/cmake/llvm/LLVMConfig.cmake


Since it is no longer installed into share/ subfolder, cmake can no
longer find it.

Consider following (partial) CMakeLists.txt:

find_package(LLVM 3.9 CONFIG)
message(FATAL_ERROR "-> ${LLVM_CONSIDERED_VERSIONS} <-")


With these 3 configs, the output is:

CMake Warning at ... (find_package):
  Could not find a configuration file for package "LLVM" that is
  compatible with requested version "3.9.0".

  The following configuration files were considered but not accepted:
    /usr/share/llvm-3.8/cmake/LLVMConfig.cmake, version: 3.8.1

CMake Error at data/kernels/CMakeLists.txt:11 (message):
  -> 3.8.1 <-


So it only found the config file of 3.8, but not of 3.9 and 4.0

I have asked about this in #cmake, and they said
[15:55:50] <ngladitz> the package itself is responsible for installing
them so I'd report it to the package maintainers

Roman.

- -- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (500, 'unstable-debug'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.7.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages llvm-3.9-dev depends on:
ii  libc6         2.24-3
ii  libffi-dev    3.2.1-6
ii  libgcc1       1:6.2.0-5
ii  libjsoncpp1   1.7.4-3
ii  libllvm3.9    1:3.9-1
ii  libstdc++6    6.2.0-5
ii  libtinfo-dev  6.0+20160917-1
ii  llvm-3.9      1:3.9-1

llvm-3.9-dev recommends no packages.

llvm-3.9-dev suggests no packages.

- -- no debconf information

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