Url Travis CI错误：安装nloptr pkg（r pkg检查）

我尝试使用travis ci检查我的r包是否正确。我的软件包应该导入r pkg

nloptr

。travis ci将在“r”中给出错误：“oldrel”分支。我在这里显示错误：

configure: Need to download and build NLopt
trying URL 'http://ab-initio.mit.edu/nlopt/nlopt-2.4.2.tar.gz'
Warning in download.file(url = "http://ab-initio.mit.edu/nlopt/nlopt-2.4.2.tar.gz",  :
  "internal" method cannot handle https redirection to: 'https://github.com/stevengj/nlopt/releases/download/nlopt-2.4.2/nlopt-2.4.2.tar.gz'
switching to method = "libcurl" because of redirection to https
downloaded 0 bytes
Warning in download.file(url = "http://ab-initio.mit.edu/nlopt/nlopt-2.4.2.tar.gz",  :
  URL 'https://github-production-release-asset-2e65be.s3.amazonaws.com/12412122/5dd09f0a-6d59-11e7-9685-af3ea1aac9be?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIWNJYAX4CSVEH53A%2F20180127%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20180127T205849Z&X-Amz-Expires=300&X-Amz-Signature=e6604ca4110973e167461335f8ffe6e340882219fd2a4ebc2a6065d4e416cc2e&X-Amz-SignedHeaders=host&actor_id=0&response-content-disposition=attachment%3B%20filename%3Dnlopt-2.4.2.tar.gz&response-content-type=application%2Foctet-stream': status was '403 Forbidden'
Error in download.file(url = "http://ab-initio.mit.edu/nlopt/nlopt-2.4.2.tar.gz",  : 
  cannot download all files
Execution halted
/bin/tar: This does not look like a tar archive
gzip: stdin: unexpected end of file
/bin/tar: Child returned status 1
/bin/tar: Error is not recoverable: exiting now
Warning message:
In untar(tarfile = "nlopt-2.4.2.tar.gz") :
  '/bin/tar -xf 'nlopt-2.4.2.tar.gz'' returned error code 2
configure: Starting to install library to /tmp/RtmpCm39nC/R.INSTALL37f361a5b719/nloptr/nlopt-2.4.2
./configure: line 3325: cd: nlopt-2.4.2: No such file or directory

---

因此，问题是travis ci不知道如何安装这个

nlopt

，这是r pkg

nloptr

所需要的。（travis ci无法通过给定的url下载

nlopt

）。幸运的是，我们可以通过将此代码添加到

.travis.yml

文件来告诉travis ci另一种方法，这有助于travis ci通过另一种方法安装nlopt

apt_packages:
  - libnlopt-dev

---

现在，特拉维斯ci可以很好地为您服务了

您应该在

.travis.yml

中添加以下内容，因为它可以在基于容器的基础设施或标准基础设施中使用，而胡朝然的回答仅适用于标准基础设施：

addons:
  apt:
    packages:
      - libnlopt-dev

---

请参阅travis docs，了解为什么这个答案会更普遍地起作用：

毫无疑问，Luke会给我们一个更专业的建议！