Difficult installing R package pdftools - r

Question

I am trying to install R package “pdftools” and encounter the following:
In file included from libqpdf/Pl_DCT.cc:1:
include/qpdf/Pl_DCT.hh:27:10: fatal error: 'jpeglib.h' file not found
#include <jpeglib.h>
^
1 error generated.
make: *** [libqpdf/Pl_DCT.o] Error 1
ERROR: compilation failed for package ‘qpdf’
I am using R version 3.3.3 on a mac with OS X 10.10.5 and can’t update my OS at the moment for a number of reasons.
I verified that the downloaded source packages are in:
/private/var/folders/t3/_mlp_5z15z9_628n5q00pw_s8d_kfs/T/RtmpnJERsz/downloaded_packages
I saw the following post:
'jpeglib.h' file not found
And ran
$ find /usr/local -name \*jpeg\* -print -name \*jpg\* -print
/usr/local/Cellar/boost/1.71.0/include/boost/gil/extension/io/jpeg
/usr/local/Cellar/boost/1.71.0/include/boost/gil/extension/io/jpeg.hpp
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Aliases/libjpeg
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Aliases/libjpeg-turbo
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/jpeg-archive.rb
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/jpeg-turbo.rb
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/jpeg.rb
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/jpeginfo.rb
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/jpegoptim.rb
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/jpegrescan.rb
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/mjpegtools.rb
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/mozjpeg.rb
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/openjpeg.rb
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/recoverjpeg.rb
find: /usr/local/jamf: Permission denied
The file "jpeglib.h" does not seem to be listed, but I located it in: /anaconda3/pkgs/jpeg-9b-he5867d9_2/include/jpeglib.h
Based on other posts, I tried from terminal:
$ brew install boost. (Lot of installing, no errors)
$ brew doctor (Lot of installing, no errors)
$ xcode-select: error: command line tools are already installed, use "Software Update" to install updates
$ brew install cairo gobject-introspection pixman (Lot of installing, no errors)
Then rebooted and tried installing pdftools again with same result.
Also saw this post but it was completely over my head:
https://www.cocoanetics.com/2012/01/helping-xcode-find-library-headers/
Any solutions in simple steps appreciated.

Answer 1

Here is my session info, I couldn't include it into comments due to restriction.
> sessionInfo()
R version 3.4.3 (2017-11-30)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS High Sierra 10.13.6
Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.4/Resources/lib/libRlapack.dylib
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods
[7] base
other attached packages:
[1] pdftools_2.2
loaded via a namespace (and not attached):
[1] compiler_3.4.3 tools_3.4.3 pillar_1.2.1 tibble_1.4.2
[5] Rcpp_1.0.1 qpdf_1.1 rlang_0.3.0.1 askpass_1.1
I just installed pdftools w/o any problem. Upgrading your R version may solve your problem.