C++26: #embed

This article discusses the proposed #embed feature for C++26, exploring its implications and potential use cases.

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If you’ve ever needed to ship a binary file — a certificate, a small image, a default configuration — inside a C++ program, you know the ritual. You find or write a tool that converts the file into a C array, you wire it into your build system, and you pray that nobody forgets to re-run the conversion after updating the original file.

C++26 ends this with #embed ( P1967R14 by JeanHeyd Meneide ). Think of it as #include for binary data — a preprocessor directive that turns a file into a comma-separated sequence of integer constant expressions, directly at compile time, with no external tools.

Before #embed , every project rolled its own approach — xxd -i , objcopy , linker tricks, Python scripts, CMake file(READ) — each fragile, platform-specific, and one forgotten regeneration away from…

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