Tomas Kalibera kindly suggested I might have both 32- and 64-bit Java installed, and it might be accessing the 32-bit.  He further suggested:

       R CMD check Ecfun_0.2-4.tar.gz --no-multiarch


      That worked.  Thanks, Thomas.


      Spencer

On 2020-03-29 08:03, Spencer Graves wrote:
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
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** 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
Execution halted
*** arch - x64
ERROR: loading failed for 'i386'
* removing 'C:/Users/spenc/Documents/R/Ecfun/Ecfun.Rcheck/Ecfun'

######################

> Sys.getenv('PATH')
[1] "C:\\Program Files\\R\\R-3.6.3\\bin\\x64;C:\\Program Files\\AdoptOpenJDK\\jdk-11.0.6.10-hotspot\\bin;C:\\Program Files\\Java\\jre1.8.0_241;C:\\Rtools\\bin;C:\\WINDOWS\\system32;C:\\WINDOWS;C:\\WINDOWS\\System32\\Wbem;C:\\WINDOWS\\System32\\WindowsPowerShell\\v1.0\\;C:\\WINDOWS\\System32\\OpenSSH\\;C:\\Program Files\\Microsoft VS Code\\bin;C:\\Program Files\\Git\\cmd;C:\\Program Files\\TortoiseSVN\\bin;c:\\programFiles\\ffmpeg\\ffmpeg-4.1\\;C:\\Program Files\\Pandoc\\;C:\\Program Files\\MiKTeX 2.9\\miktex\\bin\\x64\\;C:\\Users\\spenc\\AppData\\Local\\Microsoft\\WindowsApps;C:\\Users\\spenc\\AppData\\Local\\GitHubDesktop\\bin;C:\\FFmpeg\\bin;C:\\RBuildTools\\3.5\\bin;C:\\Program Files\\R\\R-3.6.3\\bin;C:\\Users\\spenc\\AppData\\Local\\Microsoft\\WindowsApps;C:\\RBuildTools\\3.5\\;"



On 2020-03-28 23:07, Prof Brian Ripley wrote:
On 29/03/2020 04:07, Simon Urbanek wrote:
Spencer,

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 upgrade.

There is OpenJDK, and https://adoptopenjdk.net provides binaries for macOS, including the preferred Java 11 LTS.  I just re-checked that, and after

env JAVA_HOME=/Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk/Contents/Home 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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