[Rd] status of Java & rJava?
@pencer@gr@ve@ @end|ng |rom prod@y@e@com
Sun Mar 29 15:03:16 CEST 2020
I spoke too soon in saying that everything worked with OpenJDK:
"R CMD check Ecfun_0.2-4.tar.gz" using
"https://github.com/sbgraves237/Ecfun" worked fine on my Mac but failed
with "error: DLL 'rJava' not found: maybe not installed for this
architecture?" under Windows 10. "00install.out" and
"Sys.getenv('PATH')" follow. "library(rJava)" seemed to work, and
"help(pac='rJava') displays 0.9-12. Suggestions? Thanks, Spencer Graves
* installing *source* package 'Ecfun' ...
** using staged installation
** byte-compile and prepare package for lazy loading
*** installing help indices
** building package indices
** installing vignettes
** testing if installed package can be loaded from temporary location
*** arch - i386
Error: package or namespace load failed for 'Ecfun':
.onLoad failed in loadNamespace() for 'rJava', details:
call: library.dynam("rJava", pkgname, libname)
error: DLL 'rJava' not found: maybe not installed for this architecture?
Error: loading failed
*** arch - x64
ERROR: loading failed for 'i386'
* removing 'C:/Users/spenc/Documents/R/Ecfun/Ecfun.Rcheck/Ecfun'
 "C:\\Program Files\\R\\R-3.6.3\\bin\\x64;C:\\Program
Files\\Microsoft VS Code\\bin;C:\\Program Files\\Git\\cmd;C:\\Program
On 2020-03-28 23:07, Prof Brian Ripley wrote:
> On 29/03/2020 04:07, Simon Urbanek wrote:
>> you could argue that Java is dead since Oracle effectively killed it
>> by removing all public downloads, but if you manage to get hold of a
>> Java installation then it works just fine with R. To my best
>> knowledge there has never been an issue if you installed rJava from
>> source. macOS Catalina has made binary distributions impossible due
>> to additional restrictions on run-time, but even that has been how
>> solved with the release of rJava 0.9-12, so please make sure you use
>> the latest rJava. In most cases that I have seen issues were caused
>> by incorrect configuration (setting JAVA_HOME incorrectly [do NOT set
>> it unless you know what you're doing!], not installing Java for the
>> same architecture as R etc.). If you have any issues feel free to
>> report them. rJava 0.9-12 has quite a few changes that try to detect
>> user errors better and report them so I strongly suggest users to
> There is OpenJDK, and https://adoptopenjdk.net provides binaries for
> macOS, including the preferred Java 11 LTS. I just re-checked that,
> and after
> R CMD javareconf
> I was able to install from source and check rJava 0.9-12 in 4.0.0
> alpha. For the CRAN binary of 3.6.3 I had to make sure I was using
> clang 7: 'clang' defaults to that in the Apple CLT which does not
> support -fopenmp -- but the binary package just worked.
> [All on Catalina.]
Thanks. That worked on Catalina. When installing OpenJDK on Windows
10, The default for "Set JAVA_HOME" was 'X'; I changed that to
install. It didn't work at first, but did after I rebooted.
Thanks again to both Simon Urbanek and Prof. Ripley. Spencer Graves
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