    const char *R_VARS[] = {
        "R_ARCH","",
        "R_BROWSER","",
        "R_BZIPCMD","/usr/bin/bzip2",
        "R_DOC_DIR","/usr/lib/R/doc",
        "R_GZIPCMD","/usr/bin/gzip",
        "R_HOME","/usr/lib/R",
        "R_INCLUDE_DIR","/usr/lib/R/include",
        "R_LIBS_SITE","",
        "R_LIBS_USER","~/R/x86_64-unknown-cygwin-library/3.4",
        "R_PAPERSIZE","a4",
        "R_PDFVIEWER","/usr/bin/xpdf",
        "R_PLATFORM","x86_64-unknown-cygwin",
        "R_PRINTCMD","lpr",
        "R_RD4PDF","times,inconsolata,hyper",
        "R_SHARE_DIR","/usr/lib/R/share",
        "R_SYSTEM_ABI","?,gcc,gxx,gfortran,?",
        "R_TEXI2DVICMD","/usr/bin/texi2dvi",
        "R_UNZIPCMD","/usr/bin/unzip",
        "R_ZIPCMD","/usr/bin/zip",
        NULL
    };
