Smittix 622f23c091 fix: Use ldconfig priority file instead of removing apt rtl-sdr packages ...

The apt-removal approach caused cascading failures: removing librtlsdr0
swept out dump1090-mutability and other reverse deps, then source builds
reinstalled librtlsdr-dev (pulling librtlsdr0 back), and the dump1090
subshell crashed because kill "" (empty progress_pid after progress_pid=)
returned non-zero and fired the global ERR trap.

Switch to a targeted ldconfig priority file instead:
- Write /etc/ld.so.conf.d/00-local-first.conf containing /usr/local/lib
- Files named 00-* sort before aarch64-linux-gnu.conf alphabetically,
  so ldconfig lists /usr/local/lib/librtlsdr.so.0 (Blog) first
- apt librtlsdr0, rtl-sdr, dump1090-mutability etc. are never touched
- Source build functions keep their unconditional apt_install librtlsdr-dev

Also fix the dump1090 EXIT trap: guard kill/wait against empty
progress_pid so it does not fire the ERR trap after a clean exit 0.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-02-18 17:10:42 +00:00

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