In my .emacs, I have the following:
(setq org-latex-to-pdf-process (list "latexmk -f -pdf %f"))
However, when exporting an org it uses the "wrong" version of latexmk. More precisely, from my shell (outside of emacs), I use:
/usr/local/texlive/2014/bin/x86_64-linux/latexmk
But, it seems like, org is using a different one that is associated to the wrong version of TeXLive. How can I set the right LaTeX to be used when exporting org files?
If you run Emacs on OS X, then it may have different environment variables values than the ones you see in terminal shell. You can check the value of PATH environment variable that Emacs process has by typing M-x getenv RET PATH. Most likely you don't have /usr/texbin in PATH that getenv will show you. I run emacs from shell prompt on OS X like this
$ /usr/local/opt/emacs/Emacs.app/Contents/MacOS/Emacs
to get the exact environment I have in shell. This path to Emacs works if you installed Emacs as a homebrew package. Otherwise the path to emacs executable is likely to be different. All other solutions don't quite work for me since upgrade to OS X 10.10.
I guess you could put the absolute path to latexmk in the definition of org-latex-to-pdf-process
PATHvar as in the shell env from where you launched it. What do you see when you dowhich latexmkin the terminal (from where you launched emacs)?latexmk. I launchemacsfrom a shortcut, so I don't know what's itsPATH. How can I check it?exec-path(for example by pressingM-:and then typingexec-path) to see what directories are available to Emacs to search forlatexmk. I'm not 100% sure, but I think that Org will launch a process withlatexmkrather than executing a shell command with that text.