Linker cannot find symbols in static C library when cross compiling rust to android

[arcln]

I am trying to cross-compile Rust code for x86_64 Android using Cross (I am running macOS 13 with M1 chip).
This code uses symbols from espeak-ng that I've built myself.
Upon reaching the link step, I am hit with the error :

          ld: error: undefined symbol: espeak_Initialize
          >>> referenced by lib.rs:108 (packages/espeak/src/lib.rs:108)
          >>>               /target/x86_64-linux-android/debug/deps/oratio_espeak-6fba08adc959e6d8.3x6nmh9h9fre8r93.rcgu.o:(oratio_espeak::initialize::h403ba8dd7c5de0ec)
          clang140: error: linker command failed with exit code 1 (use -v to see invocation)

I am 100% sure that the library is actually found, because -L/-l flags are properly set, and if I try to change them I get the error "cannot find library".

In order to cross-build the C library I use the following (using Android NDK on M1 mac) :

PATH=$NDK_HOME/toolchains/llvm/prebuilt/darwin-x86_64/bin:$PATH
CC="x86_64-linux-android33-clang"
CXX="x86_64-linux-android33-clang++"

./autogen.sh
./configure --host=aarch64-apple-darwin --target=x86_64-linux-android
make

Here is some info about the resulting archive :

$ nm libespeak-ng.a | grep espeak_Initialize
0000000000000000 T espeak_Initialize

$ objdump -f libespeak-ng.a
libespeak-ng.a(libespeak_ng_la-case.o):	file format elf64-x86-64
architecture: x86_64
start address: 0x0000000000000000

[repeat for all object files...]

What can cause missing symbols even when the library is found and actually contains the symbols?

Here is the exact built library I am trying to link : https://drive.google.com/file/d/1y9YgkDMrfkpct4ee-ETvRmxXv1zBsSzz/view?usp=sharing

EDIT : Here are the command used for building/linking.

$ cross test --target x86_64-linux-android --config target.x86_64-linux-android.linker="'/android-ndk/bin/x86_64-linux-android33-clang'" --config target.x86_64-linux-android.ar="'/android-ndk/bin/x86_64-linux-android-ar'"

Note that I also tried without the --config, when doing so it changes the linker from x86_64-linux-android33-clang to cc but gives the same result.

Linker invocation (each argument have been put on newline for readability) :

LC_ALL="C"
PATH="/Users/arthur/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/android-ndk/bin:/Users/arthur/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin"
VSLANG="1033"
"/android-ndk/bin/x86_64-linux-android33-clang"
"-m64"
"/tmp/rustcEr0LI7/symbols.o"
"/target/x86_64-linux-android/debug/deps/oratio_espeak-74e896619faec8e7.119cce293ejvq2cd.rcgu.o"
[other similar .rcgu.o ommitted for brevity]
"/target/x86_64-linux-android/debug/deps/oratio_espeak-74e896619faec8e7.2s376qmbbifeevz2.rcgu.o"
"-Wl,--as-needed"
"-L"
"/target/x86_64-linux-android/debug/deps"
"-L"
"/target/debug/deps"
"-L"
"/target/x86_64-linux-android/debug/build/oratio-espeak-7547cefa827890c5/out/espeak-ng/x86_64-linux-android" <-- note: this folder contains libespeak-ng.a
"-L"
"/Users/arthur/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-linux-android/lib"
"-lespeak-ng"
"-Wl,-Bstatic"
"/target/x86_64-linux-android/debug/deps/libespeakng_sys-70bc6650c0b39573.rlib"
"/Users/arthur/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-linux-android/lib/libtest-e3fab4d163e91148.rlib"
[other similar .rlib ommitted for brevity]
"/Users/arthur/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-linux-android/lib/librustc_std_workspace_std-74e842bbf3699e1d.rlib"
"/target/x86_64-linux-android/debug/deps/libparking_lot-27cc7ea2042fb770.rlib"
[other similar .rlib ommitted for brevity]
"/target/x86_64-linux-android/debug/deps/libeither-c29c058d37529903.rlib"
"/Users/arthur/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-linux-android/lib/libstd-37d05f9f3fc29d7b.rlib"
[other similar .rlib ommitted for brevity]
"/Users/arthur/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-linux-android/lib/libcompiler_builtins-3a801941068d9a2c.rlib"
"-Wl,-Bdynamic"
"-lespeak-ng"
"-ldl"
"-llog"
"-lunwind"
"-ldl"
"-lm"
"-lc"
"-Wl,--eh-frame-hdr"
"-Wl,-z,noexecstack"
"-L"
"/Users/arthur/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-linux-android/lib"
"-o"
"/target/x86_64-linux-android/debug/deps/oratio_espeak-74e896619faec8e7"
"-Wl,--gc-sections"
"-pie"
"-Wl,-z,relro,-z,now"
"-nodefaultlibs"

Also asked on Stack Overflow : https://stackoverflow.com/questions/77464901/linker-cannot-find-symbols-in-static-c-library-when-cross-compiling-rust-to-andr

Thank you