求助：安装libssl-dev失败
安装libssl-dev时报下面的错误：The following packages have unmet dependencies:
libssl-dev : Depends: libssl1.0.0 (= 1.0.1f-1ubuntu2) but 1.0.1h-0linaro1 is to be installed
E: Unable to correct problems, you have held broken packages.
但我执行sudo apt-cache showopenssl时，显示
Package: openssl
Priority: standard
Section: utils
Installed-Size: 775
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Debian OpenSSL Team <pkg-openssl-devel@lists.alioth.debian.org>
Architecture: armhf
Version: 1.0.1f-1ubuntu2
Depends: libc6 (>= 2.15), libssl1.0.0 (>= 1.0.1)
Suggests: ca-certificates
Filename: pool/main/o/openssl/openssl_1.0.1f-1ubuntu2_armhf.deb
Size: 488502
MD5sum: f76ea461823963693eec891a6ce497e0
SHA1: c0bb1872277bd8a7ac27c0f899fec3af86a04886
SHA256: 7873213b12e356118aee54ba4348c9d610816553e767b482e5944cc15b64cca2
Description-en: Secure Sockets Layer toolkit - cryptographic utility
This package is part of the OpenSSL project's implementation of the SSL
and TLS cryptographic protocols for secure communication over the
Internet.
.
It contains the general-purpose command line binary /usr/bin/openssl,
useful for cryptographic operations such as:
* creating RSA, DH, and DSA key parameters;
* creating X.509 certificates, CSRs, and CRLs;
* calculating message digests;
* encrypting and decrypting with ciphers;
* testing SSL/TLS clients and servers;
* handling S/MIME signed or encrypted mail.
Description-md5: 9b6de2bb6e1d9016aeb0f00bcf6617bd
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Supported: 9m
Task: standard, kubuntu-active, kubuntu-active, mythbuntu-frontend, mythbuntu-frontend, mythbuntu-desktop, mythbuntu-backend-slave, mythbuntu-backend-slave, mythbuntu-backend-master, mythbuntu-backend-master
看不出什么问题，请高手指点
请问有先apt-get update ？？了吗 一定要apt-get update吗？目前还没有
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