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check {devtools}

Build and check a package, cleaning up automatically on success.


check automatically builds and checks a source package, using all known best practices. Passing R CMD check is essential if you want to submit your package to CRAN: you must not have any ERRORs or WARNINGs, and you want to ensure that there are as few NOTEs as possible. If you are not submitting to CRAN, at least ensure that there are no ERRORs: these typically represent serious problems.


check(pkg = ".", document = TRUE, cleanup = TRUE, cran = TRUE,
  check_version = FALSE, force_suggests = FALSE, args = NULL,
  build_args = NULL, quiet = FALSE, check_dir = tempdir(), ...)


package description, can be path or package name. See as.package for more information
if TRUE (the default), will update and check documentation before running formal check.
if TRUE the check directory is removed if the check is successful - this allows you to inspect the results to figure out what went wrong. If FALSE the check directory is never removed.
if TRUE (the default), check using the same settings as CRAN uses.
Sets _R_CHECK_CRAN_INCOMING_ env var. If TRUE, performns a number of checked related to version numbers of packages on CRAN.
Sets _R_CHECK_FORCE_SUGGESTS_. If FALSE (the default), check will proceed even if all suggested packages aren't found.
args, build_args
An optional character vector of additional command line arguments to be passed to R CMD check/R CMD build/R CMD INSTALL.
if TRUE suppresses output from this function.
the directory in which the package is checked
Additional arguments passed to build


check automatically builds a package before using R CMD check as this is the recommended way to check packages. Note that this process runs in an independent realisation of R, so nothing in your current workspace will affect the process.

Environment variables

Devtools does its best to set up an environment that combines best practices with how check works on CRAN. This includes:

  • The standard environment variables set by devtools: r_env_vars. Of particular note for package tests is the NOT_CRAN env var which lets you know that your tests are not running on cran, and hence can take a reasonable amount of time.
  • Debugging flags for the compiler, set by compiler_flags(FALSE).
  • If aspell is found _R_CHECK_CRAN_INCOMING_USE_ASPELL_ is set to TRUE. If no spell checker is installed, a warning is issued.)
  • env vars set by arguments check_version and force_suggests

See Also

release if you want to send the checked package to CRAN.

Documentation reproduced from package devtools, version 1.10.0. License: GPL (>= 2)