Root cause of "wzp-native not loaded" at runtime on opus-DRED-v2 APK:
libwzp_native.so has a NEEDED entry for libc++_shared.so (because
crates/wzp-native/build.rs uses cpp_link_stdlib(Some("c++_shared"))),
but the APK only contained:
lib/arm64-v8a/libwzp_desktop_lib.so (192 MB)
lib/arm64-v8a/libwzp_native.so (683 KB)
No libc++_shared.so → Android's dynamic linker fails the dlopen of
libwzp_native.so at runtime with "library libc++_shared.so not found",
and every audio path that routes through wzp_native (capture, playout,
register, direct call) refuses to start.
Diagnosis:
- readelf -d libwzp_native.so shows NEEDED libc++_shared.so
- python zipfile listing of the APK confirms libc++_shared.so is
absent from lib/arm64-v8a/
- scripts/build-and-notify.sh (the legacy wzp-android build path)
already had this fix at lines 126-134 with an explicit comment:
"cargo-ndk may not copy libc++_shared.so — grab it from the NDK if
missing". That fix was never ported to build-tauri-android.sh when
the Tauri mobile pipeline was set up.
Fix: after `cargo ndk build -p wzp-native --release` produces
libwzp_native.so into jniLibs, copy libc++_shared.so from the NDK
sysroot (same find pattern as build-and-notify.sh) into the same
jniLibs dir. Abort with a clear error if the NDK doesn't have the file.
Also noting the 191 MB vs 359 MB size discrepancy the user saw: that's
almost entirely libwzp_desktop_lib.so being a 192 MB debug build. The
old working APK was probably a release build (smaller main lib) or
included multiple arches (doubling/tripling the .so count). The size
is cosmetic — the crash is the real issue, and libc++_shared.so is
~2 MB so this fix doesn't close the size gap. Can investigate the
size difference separately after register + direct call work again.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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