The Storage Footprint of Hello World: Comparing Yocto Package Dependencies

Last Updated on August 5, 2026

Overview

When developing embedded Linux systems using the Yocto Project® and OpenEmbedded, the primary goal is usually to achieve a minimal, perfectly optimized image. For those interested in Yocto: Storage Footprint of Hello World, a standard core-image-minimal serves as a lean starting point. But what happens when we introduce seemingly simple “Hello World” applications written in different programming languages? Understanding the role of Yocto: Storage Footprint of Hello World can help developers predict the impact of language selection on firmware size.

Based on a structured series of tests, this post evaluates how heavily the choice of programming language and its resulting runtime dependencies (RDEPENDS) impact the storage footprint of a minimalist Yocto system. We compare classic compiled languages like C, C++, and Go against modern ecosystems like Rust, Python, and Node.js (npm). Moreover, examining Yocto: Storage Footprint of Hello World enables a fair comparison between different build configurations. In any evaluation of embedded Linux, keep in mind the storage footprint when testing Hello World under Yocto.

Key Takeaways

• The article assesses the impact of programming languages on the storage footprint in embedded Linux systems developed with Yocto: Footprint of Hello World.
• Tests compare languages like C, Go, Rust, Python, and Node.js, highlighting how their dependencies increase storage size.
• C, C++, and CMake have minimal impacts, while Python and Node.js significantly balloon the image size.
• Post-uninstallation, leftover files remain due to limitations of the ‘opkg remove –autoremove’ command, especially with complex dependencies.
• Evaluating Yocto: The footprint of Hello World is crucial for maintaining a minimal storage footprint and preventing system bloat.

Case Studies: Real-World Storage Footprints

Let us dissect the concrete data from a test suite based on a core-image-minimal. The baseline size is exactly 145.9 MB. In these comparisons, Yocto: Storage Footprint of Hello World becomes a key metric worth tracking by embedded engineers. This practical evaluation of Hello World provides insight into the true Yocto storage footprint.

The Minimalists: C, C++, and CMake

• 95.01_hello-cpp (Size: 2,968 Bytes) → Root file system size increase: 0.1 MB (The image slightly ticks up from 145.9 to 146.0 MB). For comparison, evaluating the Yocto storage footprint of Hello World here gives an industry baseline.
• 95.02_hello-cmake / 95.10_hello-makefile (Size: ~2,500 Bytes) → Root file system size increase: 0.1 MB—storage impact stays on par with the Yocto core, showing a minimal Hello World footprint.

The Autonomous Heavyweights: Go and Rust

• 95.21_rust-hello-world (Size: 175,520 Bytes) → Root file system size increase: 0.6 MB. Rust’s image growth reflects the underlying Yocto Hello World storage footprint challenge.
• 95.25_golang-helloworld (Size: 656,584 Bytes) → Root file system size increase: 2.1 MB
  Having assessed Yocto: Storage Footprint of Hello World, Go and Rust have distinct dependency footprints impacting storage.
  

The Image Ballooners: Python and Node.js (npm)

• 95.17_hello-python3 (Size: 5,186 Bytes) → Root file system size increase: 23.4 MB (The script itself is tiny, but the core environment is heavy). Yocto: The storage footprint of Hello World becomes crucial in this context of language selection.
• 95.24_python-poetry-helloworld (Size: 10,584 Bytes) → Root file system size increase: 63.8 MB (Additional packaging and formatting utilities heavily inflate the image; here, Hello World in Yocto adds surprising storage bulk.)
• 95.22_npm-hello-world (Size: 2,130 Bytes) → Root file system size increase: 94.7 MB (The image instantly jumps up to 240.7 MB).
• 95.23_npm-registry-hello-international (Size: 85,726 Bytes) → Image Increase: 98.4 MB (An increase of nearly 100 megabytes for a single application). Tracking Yocto: Storage Footprint of Hello World provides necessary storage context for these ballooners, especially with Node.js dependencies.

Technical Summary: The Uninstallation Dilemma

A critical aspect of storage management on live target systems is how the system behaves after executing an opkg remove --autoremove  command. The metrics below evaluate the true leftovers, referencing Yocto: Storage Footprint of Hello World as a guide for measurement. Understanding the Hello World application footprint helps clarify how much storage remains occupied.

Why does storage remain occupied?

opkg remove --autoremove: The primary reason that the command fails to clean up everything is a limitation on its non-recursive solver. It safely identifies and removes the immediate dependencies explicitly declared by your main package (like removing nodejs). This issue is especially important when using the Yocto Project: the storage footprint of the Hello World application is interesting, as unremoved dependencies accumulate and affect storage. Next, tracking leftover Hello World files in Yocto further clarifies the storage issue post-uninstallation.

However, Node.js pulls in deeper systemic packages (icu, c-ares, and brotli). Once the top-tier package is uninstalled, opkg might leave behind permanent, unreferenced ghost files that waste precious flash blocks. Thus, evaluating the storage footprint of Hello World is vital to uncover lingering files and minimize storage waste for embedded platforms.

Practical Conclusion

When building a custom BitBake image for resource-constrained hardware, evaluating the programming language should never be left entirely to application developers. A Node.js or Python project can instantly ruin the entire purpose of a core-image-minimal. In conclusion, continued attention to the Yocto Project: Storage Footprint of Hello World helps teams maintain tight control over binary and library growth. In practice, controlling the Hello World test’s storage footprint in Yocto safeguards your embedded system from unnecessary bloat.

Related Links

• The Flash Footprint of Hello World: Comparing Yocto Package Dependencies (updated version of this blog post)
• The RAM Footprint of Hello World: Comparing Yocto Runtime Memory Consumption

Appendix

To learn how Embedded Linux works, take a look here. To learn more about the Yocto Project®, take a look here.