[#LLVM_PLUGIN_API_VERSION]
= LLVM_PLUGIN_API_VERSION
:mrdocs:

macro LLVM_PLUGIN_API_VERSION Identifies the API version understood by this plugin.

== Synopsis

Declared in `<llvm/Plugins/PassPlugin.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
#define LLVM_PLUGIN_API_VERSION

----

== Description

When a plugin is loaded, the driver will check it's supported plugin version against that of the plugin. A mismatch is an error. The supported version will be incremented for ABI‐breaking changes to the `PassPluginLibraryInfo` struct, i.e. when callbacks are added, removed, or reordered.


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