====== Portsあれこれ ======

===== 依存関係のエラーの対処方法 =====

たまに依存関係系のエラーが発生し、コンパイルに行く前に終了することがある。そんな時は/usr/ports/UPDATINGを見れば殆ど解決する。

例えばこんなエラーが出たとする。

<code>
===>>> Gathering dependency list for devel/llvm40 from ports

===>>> The dependency for devel/cmake
       seems to be handled by cmake-modules-3.8.2


===>>> The devel/cmake-modules port has been deleted: Deleted, merged into devel/cmake
===>>> Aborting update

===>>> Update for llvm40-4.0.1_1 failed
===>>> Aborting update
</code>

devel/cmake-modulesが削除されdevel/cmakeに統合されたと言っている。すかさず/usr/ports/UPDATINGを見てみると…

<code>
20170914:
  AFFECTS: users of CMake & CMake Modules
  AUTHOR: adridg@FreeBSD.org

  The devel/cmake-modules port has been merged into devel/cmake.

  The benefit of being able to update the modules without the binary
  is outweighed by the issues caused by having the binary out-of-sync
  with the modules.

  Users should delete the devel/cmake-modules package and then
  upgrade or reinstall devel/cmake.

  All ports have been updated to depend only on CMake.
</code>

丁寧な解説と対処方法がちゃんと載ってるんすな。というわけで、解説通りにdevel/cmake-modulesを消してdevel/cmakeを入れてみる。

<code>
$ sudo pkg remove devel/cmake-modules
Checking integrity... done (0 conflicting)
Deinstallation has been requested for the following 2 packages (of 0 packages in the universe):

Installed packages to be REMOVED:
        cmake-modules-3.8.2
        cmake-3.8.2

Number of packages to be removed: 2

The operation will free 21 MiB.

Proceed with deinstalling packages? [y/N]: y
[1/2] Deinstalling cmake-3.8.2...
[1/2] Deleting files for cmake-3.8.2: 100%
[2/2] Deinstalling cmake-modules-3.8.2...
[2/2] Deleting files for cmake-modules-3.8.2: 100%

$ sudo pkg install cmake
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
All repositories are up to date.
The following 1 package(s) will be affected (of 0 checked):

New packages to be INSTALLED:
        cmake: 3.9.3

Number of packages to be installed: 1

The process will require 21 MiB more space.
4 MiB to be downloaded.

Proceed with this action? [y/N]: y
[1/1] Fetching cmake-3.9.3.txz: 100%    4 MiB   1.4MB/s    00:03
Checking integrity... done (0 conflicting)
[1/1] Installing cmake-3.9.3...
Extracting cmake-3.9.3: 100%
</code>