“object not found” during package build/install

问题

I'm at a loss to debug building/installing a package. Building a package "MyProjekt" through

> devtools::build("MyProjekt")

works fine, even though

> devtools::document()
Updating MyProjekt documentation
Loading MyProjekt
Error: object 'rank' not found whilst loading namespace 'MyProjekt'

fails.

Attempting to install the built (pure R) package

> install.packages(pkgs="./MyProjekt.tar.gz")
...
Error: package or namespace load failed for 'MyProjekt':
 object 'rank' not found whilst loading namespace 'MyProjekt'
Error: loading failed
Execution halted
...
ERROR: loading failed for 'i386', 'x64'

also fails.

Unfortunately the term 'rank' is a common term in my domain and I have hundreds of hits when searching in my files for that term.

How might I start a systematic way to hunt this bug down?

回答1:

The toolchain mistakenly generates S3method(...) in the NAMESPACE file.

Follow this answer and edit the NAMESPACE file by hand. Replace occurrences of S3method(f) with export(f).

I'm not certain this is repeatable. The generated files appear to be not just written, but also read during a subsequent package build (by devtools? by roxygen2?). Add your comments if this works/does not work for you.

来源：https://stackoverflow.com/questions/50728217/object-not-found-during-package-build-install