ios - Kivy App在电话上出现“奇异矩阵”错误，但在计算机上却没有

Question

我的自行编写的Kivy应用程序遇到了一个问题，我在网上找不到任何地方。非常感谢您的帮助。
问题如下。我的代码涉及numpy矩阵求逆，并且在计算机上运行时绝对可以正常工作。但是，一旦我在使用XCode的模拟iPhone或个人电话上运行它，即使所讨论的矩阵绝对不是单数，我也会收到LinAlgError("Singular matrix") numpy.linalg.LinAlgError: Singular matrix错误。
编辑:
在计算机上:
numpy版本:1.19.1numpy.show_config()的输出:

blas_mkl_info:
  NOT AVAILABLE
blis_info:
  NOT AVAILABLE
openblas_info:
    libraries = ['openblas', 'openblas']
    library_dirs = ['/usr/local/lib']
    language = c
    define_macros = [('HAVE_CBLAS', None)]
blas_opt_info:
    libraries = ['openblas', 'openblas']
    library_dirs = ['/usr/local/lib']
    language = c
    define_macros = [('HAVE_CBLAS', None)]
lapack_mkl_info:
  NOT AVAILABLE
openblas_lapack_info:
    libraries = ['openblas', 'openblas']
    library_dirs = ['/usr/local/lib']
    language = c
    define_macros = [('HAVE_CBLAS', None)]
lapack_opt_info:
    libraries = ['openblas', 'openblas']
    library_dirs = ['/usr/local/lib']
    language = c
    define_macros = [('HAVE_CBLAS', None)]

在模拟电话上:
numpy版本: 1.16.4 numpy.show_config()的输出:

lapack_mkl_info:
  NOT AVAILABLE
openblas_lapack_info:
  NOT AVAILABLE
openblas_clapack_info:
  NOT AVAILABLE
atlas_3_10_threads_info:
  NOT AVAILABLE
atlas_3_10_info:
  NOT AVAILABLE
atlas_threads_info:
  NOT AVAILABLE
atlas_info:
  NOT AVAILABLE
accelerate_info:
    extra_compile_args = ['-msse3', '-I/System/Library/Frameworks/vecLib.framework/Headers']
    extra_link_args = ['-Wl,-framework', '-Wl,Accelerate']
    define_macros = [('NO_ATLAS_INFO', 3), ('HAVE_CBLAS', None)]
lapack_opt_info:
    extra_compile_args = ['-msse3', '-I/System/Library/Frameworks/vecLib.framework/Headers']
    extra_link_args = ['-Wl,-framework', '-Wl,Accelerate']
    define_macros = [('NO_ATLAS_INFO', 3), ('HAVE_CBLAS', None)]

Answer 1

造成问题的原因几乎可以肯定是链接程序参数中的-Wl,Accelerate。 Accelerate附带了非常旧的LAPACK版本，这就是为什么从https://github.com/numpy/numpy/pull/15759(未发行1.20)开始完全不再支持的原因。
如果您可以在环境变量中设置ATLAS=None BLAS=None LAPACK=None来重建kivy的numpy，那么最终您将没有这种Accelerate依赖性。
您可能需要从https://github.com/kivy/python-for-android/blob/develop/pythonforandroid/recipes/numpy/__init__.py处开始挖掘，以弄清楚如何将其传递给kivy。