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Jan Wiśniewski

PROFILE

Jan Wiśniewski

Worked on the phoenix-rtos/phoenix-rtos-project and related repositories to enhance build system reliability, cross-compilation accuracy, and hardware configuration integrity. Focused on hardening shell scripts and Makefiles for nounset safety, default path validation, and explicit cross-toolchain configuration, reducing build failures and improving CI determinism. Introduced project-specific commands in phoenix-rtos-build to retain and compare intermediate object files, supporting reproducible builds and streamlined debugging. Addressed build-time and runtime issues by validating PLO commands and correcting device references, ensuring accurate hardware targeting. Utilized Bash, Makefile scripting, and build automation to deliver robust, traceable improvements that support stable releases and future hardware expansion.

Overall Statistics

Feature vs Bugs

60%Features

Repository Contributions

7Total
Bugs
2
Commits
7
Features
3
Lines of code
62
Activity Months3

Work History

April 2026

3 Commits

Apr 1, 2026

April 2026: Focused on improving build integrity and hardware configuration accuracy across phoenix-rtos/plo and phoenix-rtos-project. Delivered targeted fixes to PLO command validation, cleaned up ia32 command lists, and corrected device naming in build configuration to ensure correct hardware references. These changes reduce build failures, prevent runtime issues related to invalid commands, and lay groundwork for stable support of additional hardware in future releases.

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 Monthly Summary: Delivered enhancements to the phoenix-rtos-build system by introducing project-specific commands to manage and retain intermediate object files. This enables targeted post-compile/post-link adjustments, retention and comparison of intermediate artifacts, and improved build flexibility, verification, and reproducibility. The change supports ISC-310 objectives and reduces debugging time by enabling reproducible builds.

June 2025

3 Commits • 2 Features

Jun 1, 2025

June 2025 — Phoenix-RTOS project (repo: phoenix-rtos/phoenix-rtos-project) focused on strengthening the build system safety and enabling reliable ZynqMP cross-builds. Key outcomes include nounset-safe shell scripting with default path validation, and explicit CROSS configuration in the ZynqMP build project to ensure correct cross-compilation toolchains. These changes reduce build failures caused by unset/null variables and configuration drift, improving determinism in CI and release readiness. Key features delivered: - Build System Robustness: Nounset Handling and Default Path Validation. Hardened shell scripts to gracefully handle unset/empty variables, ensure default paths are assigned, and validate console configurations, aligning the build system with nounset safety. - ZynqMP Cross-Compilation Toolchain Configuration: Enabled correct toolchain for ZynqMP builds by setting CROSS in the zynqmp build project to ensure valid cross-compilation. Major bugs fixed: - Fixed warnings when b_set_default_path is used on a null variable, mitigating ambiguous defaults and improving build reliability. Overall impact and accomplishments: - Achieved more reliable, deterministic builds under strict shell safety and cross-platform configuration, reducing CI failures and accelerating release readiness. Improved developer confidence in build reproducibility across environments. Technologies/skills demonstrated: - POSIX shell scripting hardening, build automation, cross-compilation toolchain configuration (CROSS), and build configuration management. Clear traceability through concise Git commits.

Activity

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Quality Metrics

Correctness91.4%
Maintainability88.6%
Architecture85.8%
Performance85.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

BashMakefileShell

Technical Skills

Build SystemBuild SystemsEmbedded Systems DevelopmentMakefile scriptingShell Scriptingbuild automationbuild system configurationbuild system managementerror handlingsoftware developmentsystem configurationsystem programming

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

phoenix-rtos/phoenix-rtos-project

Jun 2025 Apr 2026
2 Months active

Languages Used

ShellBash

Technical Skills

Build SystemBuild SystemsEmbedded Systems DevelopmentShell Scriptingbuild automationsystem configuration

phoenix-rtos/plo

Apr 2026 Apr 2026
1 Month active

Languages Used

Makefile

Technical Skills

Makefile scriptingbuild automationbuild system managementerror handlingsystem programming

phoenix-rtos/phoenix-rtos-build

Feb 2026 Feb 2026
1 Month active

Languages Used

Makefile

Technical Skills

Makefile scriptingbuild system configurationsoftware development