Spike 3.6 — Platform detection (linux-x64)

This spike is a standalone Java program that detects:

• OS (darwin, linux, win32)
• arch (x64, arm64)
• Linux libc (GLIBC, MUSL, UNKNOWN) via ELF PT_INTERP parsing of /proc/self/exe
• final runtime classifier (for native/<classifier>/runtime.node)

On this platform (linux-x64 glibc), it exercises the ELF parsing path and verifies that /proc/self/exe resolves to the JVM binary, whose PT_INTERP segment contains the glibc dynamic linker path /lib64/ld-linux-x86-64.so.2.

Build

mvn clean package

Run

java -jar target/spike-3-6-platform-detection-linux-x64.jar

Verify shared-library permissions on Linux

Build the fixture as a shared library, deliberately remove every execute bit, and pass its path to the spike:

cc -shared -fPIC -o target/libpermission_probe.so src/main/c/permission_probe.c
chmod 0644 target/libpermission_probe.so
java -jar target/spike-3-6-platform-detection-linux-x64.jar target/libpermission_probe.so

The spike fails if the file has an execute bit or if JNA cannot load and invoke it. A successful run prints:

INFO: PASS: JNA loaded and invoked a shared library with permissions [OWNER_READ, OWNER_WRITE, GROUP_READ, OTHERS_READ]

Expected output (glibc linux-x64)

INFO: Detected os=linux
INFO: Detected arch=x64
INFO: Detected linuxLibc=GLIBC
INFO: Detected classifier=linux-x64
INFO: ELF PT_INTERP=/lib64/ld-linux-x86-64.so.2
INFO: PASS: PT_INTERP matches expected glibc x86_64 dynamic linker
INFO: --- Spike result ---
INFO: Classifier for native binary selection: linux-x64
INFO: Resource path would be: native/linux-x64/runtime.node