Docs: require 'fileutils'

[sdarwin]

Testing doc builds on multiple operating systems. Succeeds on Ubuntu 24.04, fails on Ubuntu 22.04

2026-03-10T21:09:35.2110429Z /opt/github/boostorg/boost/libs/json/doc/htmldir.rb:449:in `block in write_children': uninitialized constant HtmlDirConverter::FileUtils (NameError)
2026-03-10T21:09:35.2111388Z Did you mean?  FileTest

Line 449:

FileUtils.mkdir_p(outfiledir) unless File.exist?(outfiledir)

FileUtils

Not having validated it, but an idea, the file should include:

require 'fileutils'

[cppalliance-bot]

An automated preview of the documentation is available at https://1148.json.prtest2.cppalliance.org/libs/json/doc/html/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2026-03-11 10:06:44 UTC

[grisumbras]

Looks like this should indeed fix it.

[cppalliance-bot]

GCOVR code coverage report https://1148.json.prtest2.cppalliance.org/gcovr/index.html
LCOV code coverage report https://1148.json.prtest2.cppalliance.org/genhtml/index.html
Coverage Diff Report https://1148.json.prtest2.cppalliance.org/diff-report/index.html

Build time: 2026-03-11 10:22:14 UTC

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1148/pullrequest.html

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.68%. Comparing base (68aea8d) to head (12f640e).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1148   +/-   ##
========================================
  Coverage    93.68%   93.68%           
========================================
  Files           91       91           
  Lines         9164     9164           
========================================
  Hits          8585     8585           
  Misses         579      579           

---

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