Rtools required

From your post, I guess you are using Windows, so please see this link for

On 28/04/2020 11:16 a.m., Steven Yen wrote:

Thanks. Can you kindly tell me what to read to do it the "standard way"?

Start with ?INSTALL, and find more details in the Writing R Extensions
manual.  I believe RStudio can be configured to use those tools rather
than the devtools ones, but I don't know if it will still run its test
for Rtools if you do it that way.

I imagine you can also update RStudio and all of your packages;
eventually that will work, if this is really the issue.

Duncan Murdoch

Also, where can I find file .Renviron.

On 2020/4/28 ?? 11:08, Duncan Murdoch wrote:

On 28/04/2020 11:02 a.m., Steven Yen wrote:

In RStudio, I enter File -> Open Project -> and browse to open a .Rproj
file. Then, I click Build -> Build Binary Package. Thanks.

Do it the standard way instead of using devtools.

Duncan Murdoch

On 2020/4/28 ?? 10:55, Duncan Murdoch wrote:

On 28/04/2020 9:56 a.m., Steven Yen wrote:

Thanks. I visited the Rtools web page and learned to run the

following

lines. I am still getting the same warning message.

And you are still not telling us what command you used to trigger that
message.

Duncan Murdoch

    > writeLines('PATH="${RTOOLS40_HOME}\\usr\\bin;${PATH}"', con =

"~/.Renviron")

    > Sys.which("make")

                                  make
"C:\\rtools40\\usr\\bin\\make.exe"

On 2020/4/28 ?? 08:39, Duncan Murdoch wrote:

On 28/04/2020 5:57 a.m., Steven T. Yen wrote:

Dear All

I updated to R-4.0.0. and also installed the latest Rtools 4.0
(to now
the new default folder c:\rtools40). While compiling a package
(binary)
I received the follow marning message saying Rtools is required.

Any

clues? Thanks.

Presumably you didn't put it on your path, or you used a

non-standard

way to build.  You need to say what command you used.

Duncan Murdoch