24. 後方互換性

24. 後方互換性
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	Web 上の最新リリースノート
これらのリリースノートは更新される場合があります。 Fedora 最新リリースノートは次をご覧ください。 http://docs.fedoraproject.org/release-notes/

Web 上の最新リリースノート

これらのリリースノートは更新される場合があります。 Fedora 最新リリースノートは次をご覧ください。

http://docs.fedoraproject.org/release-notes/

Fedora provides legacy system libraries for compatibility with older software. This software is part of the Legacy Software Development group, which is not installed by default. Users who require this functionality may select this group either during installation or after the installation process is complete. To install the package group on a Fedora system, use Applications → Add/Remove Software or enter the following command in a terminal window:

su -c "yum groupinstall 'Legacy Software Development'"

プロンプトが表示されたら root アカウントのパスワードを入力します。

24.1. コンパイラの互換性

互換性のために compat-gcc-34 パッケージを含んでいます:

https://www.redhat.com/archives/fedora-devel-list/2006-August/msg00409.html

24.2. KDE 3 Development Platform / Libraries

Fedora now features KDE 4.0, and no longer offers KDE 3 as a full desktop environment. Fedora does provide the following KDE 3.5 library packages to run and build the many existing KDE 3 applications:

qt3 , qt3-devel (and other qt3-* packages): Qt 3.3.8b
kdelibs3 , kdelibs3-devel : KDE 3 libraries
kdebase3 , kdebase3-devel : KDE 3 core files required by some applications

In addition, Fedora offers a kdegames3 package that includes games not ported to KDE 4 yet, and a KDE 3 version of libkdegames required by some third-party KDE 3 games.

Moreover, the KDE 4 kdebase-runtime package, which provides khelpcenter , also sets up khelpcenter as a service for KDE 3 applications, so help in KDE 3 applications works. The KDE 3 version of khelpcenter is no longer provided, and the KDE 4 version is used instead.

これらのパッケージは以下に向けて設計されています:

ファイルシステム階層標準 (FHS) に適合する、かつ
be completely safe to install in parallel with KDE 4, including the -devel packages.

In order to achieve this goal, Fedora KDE SIG members have made two changes to the KDE 4 kdelibs-devel packages:

The library symlinks are installed to /usr/lib/kde4/devel or /usr/lib64/kde4/devel depending on system architecture.
The kconfig_compiler and makekdewidgets tools have been renamed kconfig_compiler4 and makekdewidgets4 , respectively.

These changes should be completely transparent to the vast majority of KDE 4 applications that use cmake to build, since FindKDE4Internal.cmake has been patched to match these changes. The KDE SIG made these changes to the KDE 4 kdelibs-devel rather than to kdelibs3-devel because KDE 4 stores these locations in a central place, whereas KDE 3 applications usually contain hardcoded copies of the library search paths and executable names.

Note that kdebase3 does not include the following:

A complete KDE 3 desktop (workspace) which could be used instead of KDE 4; in particular, KDE 3 versions of KWin, KDesktop, Kicker, KSplash and KControl are not included.
The KDE 3 versions of kdebase applications such as Konqueror and KWrite, which are redundant with the KDE 4 versions and would conflict with them.
The libkdecorations library required for KWin 3 window decorations, as those window decorations cannot be used in the KDE 4 version of KWin.
The libkickermain library required by some Kicker applets, as there is no Kicker in Fedora 9 and thus Kicker applets cannot be used.

	Developing against the legacy API is discouraged
	As with any backwards-compatibility library, developing new software against the legacy API is discouraged.

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