5

在 *NIX 平台上构建源代码的一种常见方法是使用configure脚本。在后台,configure 尝试构建一堆测试程序来确定您可以访问哪些库。然后它生成一个包含在项目中的头文件,该文件有条件地定义了一堆宏,以便程序员可以在缺少特定“依赖项”时提供替代方案或构建库/程序的精简版本。是否有任何功能等效的使用numpy.distutils

例如,这是我的setup.py

from numpy.distutils.misc_util import Configuration

def configuration(parent_package='',top_path=None):
    config = Configuration('pyggcm',parent_package,top_path)

    #TODO: Currently, I have some macros to conditionally build the seek-code
    #Unfortunately, that's not the best solution (by far).  Perhaps if we
    #changed to using stream access it would work better, without the need
    #for these silly macros.
    config.add_extension('_fortfile',sources=['_fortfile/_fortfile.F90'],
                         define_macros=[
                             ('FSEEKABLE',1),  #compiler provides fseek and ftell
                             ('HAVE_STREAM',1) #compiler provides access='stream' for opening files. (f2003 standard)
                             ])  

    config.add_extension('jrrle',sources=['jrrle/jrrle.f90'])
    config.add_scripts(['scripts/ggcm_timehist',
                        'scripts/ggcm_plasmasheet',
                        'scripts/ggcm_plot'])
    return config


from numpy.distutils.core import setup    
setup(configuration=configuration)

这是无条件地构建FSEEKABLE代码,如果用户 Fortran 编译器不支持,则需要手动编辑(宏包装fseekftellGNU 内在函数)。有没有办法确定 Fortran 编译器是否提供这些内在函数?

4

2 回答 2

1

尝试这个:

import os
import shutil
import tempfile
from distutils.ccompiler import new_compiler

def hasfunction(cc, funcname, include=None, extra_postargs=None):
    tmpdir = tempfile.mkdtemp(prefix='hasfunction-')
    devnull = oldstderr = None
    try:
        try:
            fname = os.path.join(tmpdir, 'funcname.c')
            f = open(fname, 'w')
            if include is not None:
                f.write('#include %s\n' % include)
            f.write('int main(void) {\n')
            f.write('    %s;\n' % funcname)
            f.write('}\n')
            f.close()
            devnull = open(os.devnull, 'w')
            oldstderr = os.dup(sys.stderr.fileno())
            os.dup2(devnull.fileno(), sys.stderr.fileno())
            objects = cc.compile([fname], output_dir=tmpdir,
                                 extra_postargs=extra_postargs)
            cc.link_executable(objects, os.path.join(tmpdir, 'a.out'))
        except Exception as e:
            return False
        return True
    finally:
        if oldstderr is not None:
            os.dup2(oldstderr, sys.stderr.fileno())
        if devnull is not None:
            devnull.close()
        shutil.rmtree(tmpdir)

例子:

def detect_sse3():
    "Does this compiler support SSE3 intrinsics?"
    compiler = new_compiler()
    return hasfunction(compiler, '__m128 v; _mm_hadd_ps(v,v)',
                       include='<pmmintrin.h>',
                       extra_postargs=['-msse3'])
于 2013-10-27T10:30:04.930 回答
0

将代码片段生成到文件中并尝试对其进行编译,检查错误代码是正常的方法,并且应该可以很好地工作-但是,AFAIK 没有人作为 distutils 的一部分为您完成此操作。我怀疑其他可能基于 python 的构建工具之一可能支持这一点。我认为你最好的选择是 GNU 自动配置。

于 2013-06-28T18:23:10.020 回答