Create a service using Automator to compile .tex file in Mac
This is not the optimal solution, but it's working for now. Here is the Automator window:



The first shell script compiles the .tex file using the sequence pdflatex - biber - pdflatex and contains the following code:

for f in "$@"
do 
    file_ext=${f##*.}
    if [ "$file_ext" = "tex" ]
    then
        foldername=$(dirname "$f")
        export foldername
        filename=$(basename "$f")
        filesimple=${filename%.tex*}
        cd $foldername
        /usr/local/texlive/2013/bin/x86_64-darwin/pdflatex "$filename"
        /usr/local/texlive/2013/bin/x86_64-darwin/biber "$filesimple"
        /usr/local/texlive/2013/bin/x86_64-darwin/pdflatex "$filename"
    else
        echo $f n\'est pas un fichier TeX
    fi
done


The second shell script deletes all temp files and opens the .pdf file. It contains the following code:

for f in "$@"
do 
    file_ext=${f##*.}
    if [ "$file_ext" = "tex" ]
    then
        foldername=$(dirname "$f")
        filename=$(basename "$f")
        filesimple=${filename%.tex*}
        cd $foldername
        rm $filesimple.aux
        rm $filesimple.bbl
        rm $filesimple.bcf
        rm $filesimple.blg
        rm $filesimple.log
        rm $filesimple.run.xml
        open $filesimple.pdf
    else
        echo $f n\'est pas un fichier TeX
    fi
done


I'm still waiting for a better solution using the latexmk command!