在R服务器中安装包pdftools时出错

Question

我在Windows上使用R服务器,我需要提取数千个pdf文档的文本(以便提取特定数据).因此,我需要安装软件包"pdftools",但是当我执行命令安装时:

install.packages("pdftools")

我收到以下错误:

Installing package into ‘/home/allusers/recette/R/x86_64-redhat-linux-gnu-library/3.4’

(as ‘lib’ is unspecified)
trying URL 'https://cran.rstudio.com/src/contrib/pdftools_1.5.tar.gz'
Content type 'application/x-gzip' length 811447 bytes (792 KB)

==================================================
downloaded 792 KB

* installing *source* package ‘pdftools’ ...
** package ‘pdftools’ successfully unpacked and MD5 sums checked
Package poppler-cpp was not found in the pkg-config search path.
Perhaps you should add the directory containing `poppler-cpp.pc'
to the PKG_CONFIG_PATH environment variable
No package 'poppler-cpp' found
Using PKG_CFLAGS=-I/usr/include/poppler/cpp -I/usr/include/poppler
Using PKG_LIBS=-lpoppler-cpp

------------------------- ANTICONF ERROR ---------------------------
Configuration failed because poppler-cpp was not found. Try installing:
 * deb: libpoppler-cpp-dev (Debian, Ubuntu, etc)
 * rpm: poppler-cpp-devel (Fedora, CentOS, RHEL)
 * csw: poppler_dev (Solaris)
 * brew: poppler (Mac OSX)
If poppler-cpp is already installed, check that 'pkg-config' is in your
PATH and PKG_CONFIG_PATH contains a poppler-cpp.pc file. If pkg-config
is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:
R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'
--------------------------------------------------------------------

ERROR: configuration failed for package ‘pdftools’
* removing ‘/home/allusers/recette/R/x86_64-redhat-linux-gnu-library/3.4/pdftools’
Warning in install.packages :
  installation of package ‘pdftools’ had non-zero exit status

The downloaded source packages are in
    ‘/tmp/Rtmp3ZNfGJ/downloaded_packages’

这之前发生过这种事吗？此外,我得到的错误来自"poppler-cpp".因此我尝试安装包"poppler-cpp",但是我得到以下错误,因为这不适用于3.4.1 R版本

Warning in install.packages :
  package ‘poppler-cpp’ is not available (for R version 3.4.1)

更新:在终端中编写此命令

$ sudo yum install poppler-cpp-devel

但是另一个错误表明:

Error in .shlib_internal(args) : 
  C++11 standard requested but CXX11 is not defined

Answer 1

您是否尝试在终端libpoppler-cpp-dev中安装？

打开终端(ctrl + alt + t)并写入:

sudo apt-get install libpoppler-cpp-dev

Answer 2

在 OSX 上，我能够通过安装来解决这个问题pkg-config，我相信这有助于 Rpdftools包找到 poppler 的适当配置：

brew install pkg-config