Module versioning 

C ABI versioning — LIBXML2_VERSION, LIBXSLT_VERSION, runtime version APIs (§83, §84).

This module implements the public C ABI version functions:

• xmlLibxmlVersion() — returns LIBXML2_VERSION as integer
• xmlLibxmlVersionString() — returns LIBXML2_VERSION string pointer
• xmlParserVersion() — alias for xmlLibxmlVersionString
• xmlCheckVersion() — runtime version compatibility check
• xsltLibxsltVersion() — returns LIBXSLT_VERSION as integer
• xsltLibxsltVersionString() — returns LIBXSLT_VERSION string pointer
• xsltCheckVersion() — runtime XSLT version compatibility check

Phase 1 status

Complete — all version APIs are implemented.

Compatibility profile

Currently targeting libxml2 2.12.0 / libxslt 1.1.39 compatibility. These versions are selected as the first modern stable release after the major 2.11 → 2.12 API transition.

UPSTREAM-PARITY

Upstream version format: major * 10000 + minor * 100 + micro Example: 2.12.0 → 21200

Constants

LIBXML2_VERSION

The libxml2 version as a number (compile-time constant).

LIBXML2_VERSION_EXTRA

Extra version suffix (empty string for release versions).

LIBXML2_VERSION_MAJOR

The libxml2 version major number.

LIBXML2_VERSION_MICRO

The libxml2 version micro number.

LIBXML2_VERSION_MINOR

The libxml2 version minor number.

LIBXML2_VERSION_NUM

libxml2 version as a number: 2 * 10000 + 12 * 100 + 0 = 21200

LIBXML2_VERSION_NUMBER

The libxml2 version as a number (alternate name).

LIBXSLT_VERSION

The libxslt version as a number (compile-time constant).

LIBXSLT_VERSION_EXTRA

Extra version suffix for libxslt (empty string for release versions).

LIBXSLT_VERSION_MAJOR

The libxslt version major number.

LIBXSLT_VERSION_MICRO

The libxslt version micro number.

LIBXSLT_VERSION_MINOR

The libxslt version minor number.

LIBXSLT_VERSION_NUM

libxslt version as a number: 1 * 10000 + 1 * 100 + 39 = 10139

LIBXSLT_VERSION_NUMBER

The libxslt version as a number (alternate name).

Functions

c_str_to_bytes^⚠

Convert a C string pointer to a byte slice (NULL-safe).

is_initialized

Check whether the library has been initialized.

set_initialized

Mark the library as initialized.

version_number

Compute the numeric version from major/minor/micro components.

xmlCheckVersion

Check that the library version is at least version.

xmlLibxmlVersion

Return the libxml2 version as an integer.

xmlLibxmlVersionString

Return the libxml2 version as a static C string.

xmlParserVersion

Return the parser version string (alias for xmlLibxmlVersionString).

xsltCheckVersion

Check that the XSLT library version is at least version.

xsltLibxsltVersion

Return the libxslt version as an integer.

xsltLibxsltVersionString

Return the libxslt version as a static C string.