fun/web/documentation/external

layout	published	noToc	noComments	noDate	title	subtitle	description	permalink	lang	tags
page	true	true	false	false	Fun - External integrations (optional extensions)	Catalog of all example scripts under ./examples/, what each area contains, how to run them, required env vars, and extension requirements.	Catalog of all example scripts under ./examples/, what each area contains, how to run them, required env vars, and extension requirements.	/documentation/external/	en	documentation handbook installation usage introduction help guide howto docs specifications specs repl

External integrations (optional extensions)

This section documents Fun's optional, build-time selectable extensions. Each page covers:

• How to enable the extension via CMake option (FUN_WITH_*)
• Build requirements and detection notes
• Available opcodes and/or helper functions
• Minimal usage examples and links to example scripts

Extensions:

• cURL (libcurl)
• INI (iniparser)
• JSON (json-c)
• libxml2 (XML)
• SQLite
• PCRE2 (Perl-compatible regex)
• PC/SC (Smart cards)
• OpenSSL

Notes:

• These integrations are optional; the VM compiles without them.
• When disabled, related builtins usually return empty strings/neutral values rather than fail hard, mirroring existing optionality patterns.