buiild numpy Failed

[machh]

When I was build the numpy module of the javacpp-presets on the aarch64 platform,

after
mvn clean install

I encountered an error,

---

WARNING: Target directory /root/.javacpp/cache/cpython-3.7.7-1.5.3-linux-arm64.jar/org/bytedeco/cpython/linux-arm64/lib/python3.7/pycache already exists. Specify --upgrade to force replacement.
WARNING: Target directory /root/.javacpp/cache/cpython-3.7.7-1.5.3-linux-arm64.jar/org/bytedeco/cpython/linux-arm64/lib/python3.7/pyximport already exists. Specify --upgrade to force replacement.
WARNING: Target directory /root/.javacpp/cache/cpython-3.7.7-1.5.3-linux-arm64.jar/org/bytedeco/cpython/linux-arm64/lib/python3.7/Cython already exists. Specify --upgrade to force replacement.
WARNING: Target directory /root/.javacpp/cache/cpython-3.7.7-1.5.3-linux-arm64.jar/org/bytedeco/cpython/linux-arm64/lib/python3.7/Cython-3.0.2.dist-info already exists. Specify --upgrade to force replacement.
WARNING: Target directory /root/.javacpp/cache/cpython-3.7.7-1.5.3-linux-arm64.jar/org/bytedeco/cpython/linux-arm64/lib/python3.7/cython.py already exists. Specify --upgrade to force replacement.
WARNING: Target directory /root/.javacpp/cache/cpython-3.7.7-1.5.3-linux-arm64.jar/org/bytedeco/cpython/linux-arm64/lib/python3.7/bin already exists. Specify --upgrade to force replacement.
WARNING: You are using pip version 19.2.3, however version 23.2.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Running from numpy source directory.
Cythonizing sources
Processing numpy/random/_bounded_integers.pxd.in
Processing numpy/random/_pcg64.pyx
warning: /home/javacpp-presets-1.5.3/numpy/cppbuild/linux-arm64/numpy-1.18.2/numpy/init.pxd:17:0: The 'DEF' statement is deprecated and will be removed in a future Cython version. Consider using global variables, constants, and in-place literals instead. See cython/cython#4310

Error compiling Cython file:

...
def init(self, seed=None):
BitGenerator.init(self, seed)
self.rng_state.pcg_state = &self.pcg64_random_state

    self._bitgen.state = <void *>&self.rng_state
    self._bitgen.next_uint64 = &pcg64_uint64
                               ^

---

_pcg64.pyx:113:35: Cannot assign type 'uint64_t (*)(void ) except? -1 nogil' to 'uint64_t ()(void *) noexcept nogil'. Exception values are incompatible. Suggest adding 'noexcept' to type 'uint64_t (void *) except? -1 nogil'.
Traceback (most recent call last):
File "/home/javacpp-presets-1.5.3/numpy/cppbuild/linux-arm64/numpy-1.18.2/tools/cythonize.py", line 238, in
main()
File "/home/javacpp-presets-1.5.3/numpy/cppbuild/linux-arm64/numpy-1.18.2/tools/cythonize.py", line 234, in main
find_process_files(root_dir)
File "/home/javacpp-presets-1.5.3/numpy/cppbuild/linux-arm64/numpy-1.18.2/tools/cythonize.py", line 225, in find_process_files
process(root_dir, fromfile, tofile, function, hash_db)
File "/home/javacpp-presets-1.5.3/numpy/cppbuild/linux-arm64/numpy-1.18.2/tools/cythonize.py", line 191, in process
processor_function(fromfile, tofile)
File "/home/javacpp-presets-1.5.3/numpy/cppbuild/linux-arm64/numpy-1.18.2/tools/cythonize.py", line 81, in process_pyx
[sys.executable, '-m', 'cython'] + flags + ["-o", tofile, fromfile])
File "/root/.javacpp/cache/cpython-3.7.7-1.5.3-linux-arm64.jar/org/bytedeco/cpython/linux-arm64/lib/python3.7/subprocess.py", line 363, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/root/.javacpp/cache/cpython-3.7.7-1.5.3-linux-arm64.jar/org/bytedeco/cpython/linux-arm64/bin/python3.7', '-m', 'cython', '-3', '--fast-fail', '-o', '_pcg64.c', '_pcg64.pyx']' returned non-zero exit status 1.
Traceback (most recent call last):
File "setup.py", line 488, in
setup_package()
File "setup.py", line 469, in setup_package
generate_cython()
File "setup.py", line 275, in generate_cython
raise RuntimeError("Running cythonize failed!")
RuntimeError: Running cythonize failed!
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE

Moreover, it seems that cpython has already been build successfully.

CPYTHON_PATH is :
/home/javacpp-presets-1.5.3/numpy/cppbuild/linux-arm64/../../../cpython/cppbuild/linux-arm64/

and

ll /home/javacpp-presets-1.5.3/numpy/cppbuild/linux-arm64/../../../cpython/cppbuild/linux-arm64/
total 28
drwxr-xr-x 19 501 501 4096 Sep 15 07:39 Python-3.7.7
drwxr-xr-x 2 root root 4096 Sep 15 07:39 bin
drwxr-xr-x 6 root root 4096 Sep 15 07:38 host
drwxr-xr-x 4 root root 4096 Sep 15 07:39 include
drwxr-xr-x 5 root root 4096 Sep 15 07:39 lib
drwxrwxr-x 18 root root 4096 Sep 15 07:38 openssl-1.1.1f
drwxr-xr-x 3 root root 4096 Sep 15 07:39 share`

[saudet]

Cython 3.x isn't supported by that version of NumPy

[machh]

@saudet
thanks for your reply.

Cython and NumPy are both modules under the javacpp-presets-1.5.3 project, and Cython has also been compiled from javacpp-presets-1.5.3 cppbuild.sh script.

So, how should I solve this problem?

[saudet]

I'd recommend using the latest version of NumPy