Bincompat helloworld g++

[Antonio-88]

Added bincompat-c++-hello
Added bincompat-c++-http

[Copilot]

Pull request overview

Adds two new Unikraft binary-compatibility examples that run Linux-ELF C++ programs via the ELF loader: a minimal “hello” and a simple HTTP server, including rootfs build artifacts, platform run scripts, and scripted test harnesses.

Changes:

• Introduce bincompat-c++-hello: C++ “Bye, World!” ELF + QEMU/Firecracker build/run/test scripts.
• Introduce bincompat-c++-http: statically-linked HTTP server ELF + QEMU/Firecracker build/run/test scripts.
• Add documentation and helper scripts (setup.sh, .scripts/*, Firecracker JSON configs) to automate setup/build/run/test flows.

Reviewed changes

Copilot reviewed 41 out of 41 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
bincompat-c++-http/setup.sh	Creates workdir/ and symlinks required repo(s) into it.
bincompat-c++-http/rootfs/Makefile	Builds the Linux-ELF HTTP server binary for inclusion in the initrd.
bincompat-c++-http/rootfs/http_server.cpp	Implements a simple socket-based HTTP server returning “Bye, World!”.
bincompat-c++-http/rootfs/.gitignore	Ignores the built http_server binary in rootfs.
bincompat-c++-http/README.md	Documents build/run workflow for the HTTP server on Unikraft ELF loader.
bincompat-c++-http/fc.x86_64.json	Firecracker config to boot the ELF loader with initrd and run /http_server.
bincompat-c++-http/.scripts/test/wrapper.sh	Test wrapper intended to validate the app behavior after starting a VM.
bincompat-c++-http/.scripts/test/README.md	Documents the scripted test flow for this app.
bincompat-c++-http/.scripts/test/common.sh	Common test helpers (cleanup, start instance, curl/ping checks).
bincompat-c++-http/.scripts/test/all.sh	Runs build+run smoke tests for qemu/fc variants and logs output.
bincompat-c++-http/.scripts/test/.gitignore	Ignores test logs directory.
bincompat-c++-http/.scripts/run/qemu.x86_64	Starts QEMU with networking and runs /http_server under elfloader.
bincompat-c++-http/.scripts/run/fc.x86_64	Starts Firecracker using fc.x86_64.json.
bincompat-c++-http/.scripts/README.md	Documents .scripts build/run usage.
bincompat-c++-http/.scripts/common.sh	Sets elfloader base app and provides helper to build it.
bincompat-c++-http/.scripts/build/rootfs.x86_64	Builds rootfs ELF and packages initrd.cpio.
bincompat-c++-http/.scripts/build/qemu.x86_64	Builds rootfs + qemu kernel for base elfloader app.
bincompat-c++-http/.scripts/build/kernel.qemu.x86_64	Builds elfloader base kernel for QEMU.
bincompat-c++-http/.scripts/build/kernel.fc.x86_64	Builds elfloader base kernel for Firecracker.
bincompat-c++-http/.scripts/build/fc.x86_64	Builds rootfs + fc kernel for base elfloader app.
bincompat-c++-http/.gitignore	Ignores local build outputs (workdir/, initrd.cpio).
bincompat-c++-hello/setup.sh	Creates workdir/ and symlinks required repo(s) into it.
bincompat-c++-hello/rootfs/Makefile	Builds the Linux-ELF C++ hello binary for inclusion in the initrd.
bincompat-c++-hello/rootfs/helloworld.cpp	Implements the “Bye, World!” C++ hello program.
bincompat-c++-hello/rootfs/.gitignore	Ignores the built hello-c++ binary in rootfs.
bincompat-c++-hello/README.md	Documents build/run workflow for the C++ hello app on Unikraft ELF loader.
bincompat-c++-hello/fc.x86_64.json	Firecracker config to boot the ELF loader and run /hello-c++.
bincompat-c++-hello/.scripts/test/wrapper.sh	Test wrapper that checks for expected output.
bincompat-c++-hello/.scripts/test/README.md	Documents the scripted test flow for this app.
bincompat-c++-hello/.scripts/test/common.sh	Common test helpers (cleanup, start instance, curl/ping checks).
bincompat-c++-hello/.scripts/test/all.sh	Runs build+run smoke tests for qemu/fc variants and logs output.
bincompat-c++-hello/.scripts/test/.gitignore	Ignores test logs directory.
bincompat-c++-hello/.scripts/run/qemu.x86_64	Starts QEMU and runs /hello-c++ under elfloader.
bincompat-c++-hello/.scripts/run/fc.x86_64	Starts Firecracker using fc.x86_64.json.
bincompat-c++-hello/.scripts/common.sh	Sets elfloader base app and provides helper to build it.
bincompat-c++-hello/.scripts/build/rootfs.x86_64	Builds rootfs ELF and packages initrd.cpio.
bincompat-c++-hello/.scripts/build/qemu.x86_64	Builds rootfs + qemu kernel for base elfloader app.
bincompat-c++-hello/.scripts/build/kernel.qemu.x86_64	Builds elfloader base kernel for QEMU.
bincompat-c++-hello/.scripts/build/kernel.fc.x86_64	Builds elfloader base kernel for Firecracker.
bincompat-c++-hello/.scripts/build/fc.x86_64	Builds rootfs + fc kernel for base elfloader app.
bincompat-c++-hello/.gitignore	Ignores local build outputs (workdir).

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