Closed
Description
Following the docs/User Guide from f2py, if one wants to generate a .c file with the extension module one must do
$ f2py -m fib1 fib1.fto generate a fib1module.c file. This works. However, the next step to build the extension module to be importable in Python, according to the docs, is
$ f2py -c fib1module.cHowever, this fails for me with the following messages:
$ f2py -c fib1module.c --verbose
running build
running config_cc
unifing config_cc, config, build_clib, build_ext, build commands --compiler options
running config_fc
unifing config_fc, config, build_clib, build_ext, build commands --fcompiler options
running build_src
build_src
building extension "untitled" sources
build_src: building npy-pkg config files
running build_ext
new_compiler returns <class 'distutils.unixccompiler.UnixCCompiler'>
customize UnixCCompiler
customize UnixCCompiler using build_ext
********************************************************************************
<class 'distutils.unixccompiler.UnixCCompiler'>
preprocessor = ['gcc', '-pthread', '-B', '/opt/miniconda/envs/numpy-dev/compiler_compat', '-Wl,--sysroot=/', '-E']
compiler = ['gcc', '-pthread', '-B', '/opt/miniconda/envs/numpy-dev/compiler_compat', '-Wl,--sysroot=/', '-Wsign-compare', '-DNDEBUG', '-g', '-fwrapv', '-O3', '-Wall', '-Wstrict-prototypes', '-std=c99']
compiler_so = ['gcc', '-pthread', '-B', '/opt/miniconda/envs/numpy-dev/compiler_compat', '-Wl,--sysroot=/', '-Wsign-compare', '-DNDEBUG', '-g', '-fwrapv', '-O3', '-Wall', '-Wstrict-prototypes', '-fPIC', '-std=c99']
compiler_cxx = ['g++', '-pthread', '-B', '/opt/miniconda/envs/numpy-dev/compiler_compat', '-Wl,--sysroot=/']
linker_so = ['gcc', '-pthread', '-shared', '-B', '/opt/miniconda/envs/numpy-dev/compiler_compat', '-L/opt/miniconda/envs/numpy-dev/lib', '-Wl,-rpath=/opt/miniconda/envs/numpy-dev/lib', '-Wl,--no-as-needed', '-Wl,--sysroot=/']
linker_exe = ['gcc', '-pthread', '-B', '/opt/miniconda/envs/numpy-dev/compiler_compat', '-Wl,--sysroot=/']
archiver = ['ar', 'rc']
ranlib = None
libraries = []
library_dirs = []
include_dirs = ['/opt/miniconda/envs/numpy-dev/include/python3.6m']
********************************************************************************
building 'untitled' extension
compiling C sources
C compiler: gcc -pthread -B /opt/miniconda/envs/numpy-dev/compiler_compat -Wl,--sysroot=/ -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -std=c99
compile options: '-I/home/melissa/projects/numpy/numpy/core/include -I/opt/miniconda/envs/numpy-dev/include/python3.6m -c'
gcc: fib1module.c
fib1module.c:16:10: fatal error: fortranobject.h: Arquivo ou diretório inexistente
16 | #include "fortranobject.h"
| ^~~~~~~~~~~~~~~~~
compilation terminated.
error: Command "gcc -pthread -B /opt/miniconda/envs/numpy-dev/compiler_compat -Wl,--sysroot=/ -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -std=c99 -I/home/melissa/projects/numpy/numpy/core/include -I/opt/miniconda/envs/numpy-dev/include/python3.6m -c fib1module.c -o /tmp/tmpyjgu4iq5/fib1module.o -MMD -MF /tmp/tmpyjgu4iq5/fib1module.o.d" failed with exit status 1Doing
$ f2py -c fib1module.c -I/home/melissa/projects/numpy/numpy/f2py/src -m fib1moduleseems to work (this is the location of my fortranobject.h file), but then the module is not importable:
>>> import fib1module
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: /home/melissa/projects/numpy/doc/source/f2py/fib1module.cpython-36m-x86_64-linux-gnu.so: undefined symbol: PyFortran_TypeTL; DR: Is this a bug, or something we are not supposed to do (generate .c sources and then build the extension module in a separate step)?
>>> import sys, numpy; print(numpy.__version__, sys.version)
1.18.0.dev0+8d217b0 3.6.7 | packaged by conda-forge | (default, Jul 2 2019, 02:18:42)
[GCC 7.3.0]