installation error in ubuntu

[HymEric]

When I install pyflow in ubuntu, it happen

(pytorch100) hym@VIPA109:~/pycharm_remote/pyflow-master$ python setup.py build_ext -i Compiling pyflow.pyx because it changed. [1/1] Cythonizing pyflow.pyx /home/disk1/hym/anaconda3/envs/pytorch100/lib/python3.7/site-packages/Cython/Compiler/Main.py:367: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: /home/disk1/hym/pycharm_remote/pyflow-master/pyflow.pyx tree = Parsing.p_module(s, pxd, full_module_name) running build_ext building 'pyflow' extension creating build creating build/temp.linux-x86_64-3.7 creating build/temp.linux-x86_64-3.7/src gcc -pthread -B /home/disk1/hym/anaconda3/envs/pytorch100/compiler_compat -Wl,--sysroot=/ -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/home/disk1/hym/anaconda3/envs/pytorch100/lib/python3.7/site-packages/numpy/core/include -I/home/disk1/hym/anaconda3/envs/pytorch100/lib/python3.7/site-packages/numpy/core/include -I/home/disk1/hym/anaconda3/envs/pytorch100/include/python3.7m -c pyflow.cpp -o build/temp.linux-x86_64-3.7/pyflow.o cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++ [enabled by default] In file included from pyflow.cpp:29:0: /home/disk1/hym/anaconda3/envs/pytorch100/include/python3.7m/Python.h:14:2: error: #error "Something's broken. UCHAR_MAX should be defined in limits.h." #error "Something's broken. UCHAR_MAX should be defined in limits.h." ^ /home/disk1/hym/anaconda3/envs/pytorch100/include/python3.7m/Python.h:18:2: error: #error "Python's source code assumes C's unsigned char is an 8-bit type." #error "Python's source code assumes C's unsigned char is an 8-bit type." ^ In file included from /home/disk1/hym/anaconda3/envs/pytorch100/lib/python3.7/site-packages/numpy/core/include/numpy/ndarraytypes.h:1824:0, from /home/disk1/hym/anaconda3/envs/pytorch100/lib/python3.7/site-packages/numpy/core/include/numpy/ndarrayobject.h:12, from /home/disk1/hym/anaconda3/envs/pytorch100/lib/python3.7/site-packages/numpy/core/include/numpy/arrayobject.h:4, from pyflow.cpp:632: /home/disk1/hym/anaconda3/envs/pytorch100/lib/python3.7/site-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:17:2: warning: #warning "Using deprecated NumPy API, disable it with " "#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp] #warning "Using deprecated NumPy API, disable it with "
^ In file included from /usr/include/stdio.h:74:0, from /home/disk1/hym/anaconda3/envs/pytorch100/include/python3.7m/Python.h:25, from pyflow.cpp:29: /usr/include/libio.h:306:3: error: ‘size_t’ does not name a type size_t __pad5; ^ /usr/include/libio.h:310:67: error: ‘size_t’ was not declared in this scope char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)]; ^ /usr/include/libio.h:338:62: error: ‘size_t’ has not been declared typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes); ^ /usr/include/libio.h:347:6: error: ‘size_t’ has not been declared size_t __n); ^ In file included from /usr/include/stdio.h:74:0, from /home/disk1/hym/anaconda3/envs/pytorch100/include/python3.7m/Python.h:25, from pyflow.cpp:29: ............... Please,if u know why, tell e solution?