RPM パッケージをビルドする前に、ビルド依存関係を自動的にインストールします。

.rpmパッケージを作成しようとしています。私はこれを行うための手順に従いました。これまですべての段階が順調に進んでいますが、今はこの段階だけに留まっています。次のコマンドを実行しましたが、このエラーが発生しました。

rpmbuild -ba asterisk.spec
error: Failed build dependencies: 
    gtk2-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    libsrtp-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    gmime22-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    graphviz is needed by asterisk-1.8.12.2-1.fc15.x86_64
    graphviz-gd is needed by asterisk-1.8.12.2-1.fc15.x86_64
    latex2html is needed by asterisk-1.8.12.2-1.fc15.x86_64
    neon-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    libical-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    speex-devel >= 1.2 is needed by asterisk-1.8.12.2-1.fc15.x86_64
    gsm-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    libedit-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    openais-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    alsa-lib-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    dahdi-tools-devel >= 2.0.0 is needed by asterisk-1.8.12.2-1.fc15.x86_64
    dahdi-tools-libs >= 2.0.0 is needed by asterisk-1.8.12.2-1.fc15.x86_64
    libpri-devel >= 1.4.12 is needed by asterisk-1.8.12.2-1.fc15.x86_64
    libss7-devel >= 1.0.1 is needed by asterisk-1.8.12.2-1.fc15.x86_64
    spandsp-devel >= 0.0.5-0.1.pre4 is needed by asterisk-1.8.12.2-1.fc15.x86_64
    iksemel-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    jack-audio-connection-kit-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    libresample-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    lua-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    mISDN-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    bluez-libs-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    libtool-ltdl-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    unixODBC-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    portaudio-devel >= 19 is needed by asterisk-1.8.12.2-1.fc15.x86_64
    postgresql-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    radiusclient-ng-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    net-snmp-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    lm_sensors-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    freetds-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64
    uw-imap-devel is needed by asterisk-1.8.12.2-1.fc15.x86_64

私はfedora-15を使用しています。このエラーを解決するには？どんなアイデアや提案でも大変感謝します
。