Install yazpp with Homebrew, MacPorts, apt

Project links

• Homepage

Commands and aliases

• yazpp-config

Project history

YAZ++ grew out of the long-running YAZ ecosystem, which Index Data describes as a toolkit for Z39.50, SRW/SRU, and Solr-oriented information retrieval. The YAZ repository traces that base toolkit back to 1995, while the YAZ++ documentation frames this package as the C++ layer for using YAZ from C++ rather than C.

The ZOOM C++ binding became part of YAZ++ early: the ZOOM site noted on 2002-10-24 that the YAZ implementation was available as part of the new YAZ++ toolkit and included in YAZ++ releases from 0.4 onward. Later YAZ++ documentation says versions 0.7 and newer added SRU support.

The modern GitHub repository was created on 2016-01-06 as a public mirror/workspace for a codebase that was already established in the library-technology world. Its README still presents the package in classic toolkit terms: a C++ library, C++ headers, DocBook documentation, Windows build files, and small example clients and servers.

Adoption history

YAZ++ adoption is mostly within the library, catalog, and metadata-search niche rather than general-purpose C++ development. The Library of Congress Z39.50 software resources page lists YAZ / YAZ++ as C/C++ programmer toolkits for Z39.50/SRW/SRU clients and servers, reflecting its role in standards-based library interoperability.

The package is useful where organizations already rely on YAZ but want C++ objects and ZOOM abstractions. That adoption pattern is narrow but durable: a small toolkit can stay packaged for years because Z39.50/SRU infrastructure in libraries changes slowly and values protocol compatibility.

How it is used

Developers use YAZ++ to build Z39.50 or SRU clients and servers in C++. The package includes examples such as a basic client, a basic server, and a ZOOM client, and the API documentation describes socket observers, PDU observers, query abstractions, and higher-level client/server objects around YAZ data structures.

In practice, YAZ++ sits below discovery applications, proxies, and catalog integrations. It is not a user-facing search program so much as a packaged protocol library for developers who need to speak established library-retrieval protocols.

Why package nerds care

YAZ++ is package-nerd significant because it is a small binding package for a very specific standards ecosystem. It shows why package managers keep niche libraries alive: the audience is small, but the consumers need reproducible builds for long-lived institutional infrastructure.

It also illustrates the packaging split common in C/C++ protocol stacks: the base C toolkit, language bindings, examples, generated documentation, and downstream packages all matter separately even when the visible command-line surface is tiny.

Timeline

• 1995: Index Data's YAZ toolkit lineage begins, providing the C base that YAZ++ wraps.
• 2002-10-24: The ZOOM C++ site documents the YAZ implementation as part of the new YAZ++ toolkit and included from YAZ++ 0.4 onward.
• YAZ++ 0.7 era: The YAZ++ introduction notes SRU support in later versions, starting with 0.7 and newer.
• 2016-01-06: The public GitHub repository for indexdata/yazpp is created.

Related projects

• Related projects include YAZ, YAZ Proxy, ZOOM, ZOOM-Perl, yaz4j, PHP/YAZ, Zebra, Z39.50, SRU/SRW, Solr, DocBook, and the Library of Congress Z39.50 standards ecosystem.

Sources

• https://api.github.com/repos/indexdata/yazpp
• https://github.com/indexdata/yaz
• https://github.com/indexdata/yazpp
• https://raw.githubusercontent.com/indexdata/yazpp/master/README.md
• https://software.indexdata.com/yazpp/doc/api.html
• https://software.indexdata.com/yazpp/doc/introduction.html
• https://www.loc.gov/standards/z3950/agency/resources/software.html
• https://zoom.z3950.org/bind/cplusplus/yaz/index.html