v0.8.0

Changelog

🧰 Bug fixes 🧰

• injector: Do not overwrite existing .NET profiler and startup-hook environment variables when deciding whether to inject .NET auto-instrumentation (#270)
  If the target process already defines CORECLR_ENABLE_PROFILING, CORECLR_PROFILER,
  CORECLR_PROFILER_PATH, DOTNET_ADDITIONAL_DEPS, DOTNET_SHARED_STORE, or
  DOTNET_STARTUP_HOOKS, the injector now stands down for .NET instead of overwriting those
  values. OTEL_DOTNET_AUTO_HOME alone does not block injection.

• injection: Skip .NET auto-instrumentation for applications that already reference OpenTelemetry packages. (#267)

• injector: Fix libc detection failure on glibc < 2.34 systems (e.g. RHEL 8) for binaries that do not link libdl.so (#311)
  On glibc < 2.34 (e.g. RHEL 8 / glibc 2.28), dlsym is exported by libdl.so rather than
  libc.so itself. Binaries that do not link libdl.so (such as grep, simple C utilities, and
  many other system programs) would produce a failed to identify libc warning and receive no
  instrumentation. The fix adds a fallback that looks up setenv and __environ directly from the
  ELF symbol table when dlsym is not found, which succeeds for libc.so on all glibc versions.