addon_registration.hpp

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#pragma once
 
/**
 * q3::addons::register_all() — register every build-time add-on this build
 * compiled in.
 *
 * Every entry point calls it once, as its first statement, so that the
 * registries (input formats, pseudopotential formats, PAW one-centre
 * conventions, volumetric formats) are complete before anything parses an
 * argument or reads an input. It runs before MPI is initialised and before the
 * logger exists, so registration makes no MPI calls and logs nothing.
 *
 * The definition is generated by cmake/Q3Addons.cmake into
 * q3_addon_registration.hpp. Only entry points include this header, so the
 * add-on headers that generated file pulls in never enter a core translation
 * unit. Without the generated header (a tool compiling a header on its own,
 * outside the build) no add-on is registered.
 */
 
#if __has_include(<q3_addon_registration.hpp>)
#include <q3_addon_registration.hpp>
#else
namespace q3::addons {
 
/// No add-on is compiled in, so there is nothing to register.
inline void register_all() {}
 
} // namespace q3::addons
#endif