Files
LocalAI/backend/go/piper/run.sh
LocalAI [bot] 068d397acf fix(backends): set rpath on the piper darwin binary so it can load its bundled libs (#10525)
The metal-darwin-arm64-piper backend crashed at launch on macOS:

    DYLD "Library missing"
      Library not loaded: @rpath/libucd.dylib
      Referenced from: .../piper
      Reason: no LC_RPATH's found

The piper binary links libucd, libespeak-ng, libpiper_phonemize and
libonnxruntime via @rpath, but ships with no LC_RPATH, so dyld cannot
expand @rpath and aborts before piper runs. The libraries themselves are
already bundled in package/lib/ by package.sh.

Additionally, package.sh's architecture detection only handled the Linux
glibc loaders (/lib64/ld-linux-x86-64.so.2, /lib/ld-linux-aarch64.so.1)
and otherwise hit `echo "Error: Could not detect architecture"; exit 1`,
so on macOS packaging failed outright.

Add a Darwin branch (before the Linux checks) that skips the glibc/ld.so
bundling macOS has no use for and instead runs
`install_name_tool -add_rpath @loader_path/lib` on the piper binary, so
@rpath resolves to the bundled package/lib/ directory.

Also mirror sherpa-onnx/opus in run.sh: export DYLD_LIBRARY_PATH on
Darwin (LD_LIBRARY_PATH is Linux-only) as a defensive fallback.

Validated by hand on Apple Silicon: with the rpath added, piper
synthesized a real WAV. The darwin build is validated in CI.

Assisted-by: Claude:claude-opus-4-8

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Co-authored-by: Ettore Di Giacinto <mudler@localai.io>
2026-06-26 15:10:15 +02:00

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#!/bin/bash
set -ex
CURDIR=$(dirname "$(realpath "$0")")
export ESPEAK_NG_DATA="$CURDIR"/espeak-ng-data
if [ "$(uname)" = "Darwin" ]; then
export DYLD_LIBRARY_PATH="$CURDIR"/lib:$DYLD_LIBRARY_PATH
else
export LD_LIBRARY_PATH="$CURDIR"/lib:$LD_LIBRARY_PATH
fi
# If there is a lib/ld.so, use it
if [ -f "$CURDIR"/lib/ld.so ]; then
echo "Using lib/ld.so"
exec "$CURDIR"/lib/ld.so "$CURDIR"/piper "$@"
fi
exec "$CURDIR"/piper "$@"