PyQtBuilder and Python from source on Windows

[Phil Thompson]

As it says in the docs, py-include-dir is the name of the directory 
containing the Python.h file and distutils.sysconfig.get_python_inc() is 
documented as returning a single directory.

Phil

On 07/10/2020 01:05, Patrick Stinson wrote:
> Phil,
> 
> Here is a pyqtbuild workaround that got me moving again. No idea if it
> is clean enough but demonstrates the problem.
> 
> --- a/builder.py
> +++ b/builder.py
> @@ -386,9 +386,15 @@ macx {
>                      'QMAKE_LFLAGS += 
> -Wl,--version-script={}.exp'.format(
>                              buildable.target))
> 
> -        pro_lines.append(
> -                'INCLUDEPATH += {}'.format(
> -                        self.qmake_quote(project.py_include_dir)))
> +        # pks
> +        if ';' in project.py_include_dir:
> +            py_include_dir_parts = project.py_include_dir.split(';')
> +        else:
> +            py_include_dir_parts = [project.py_include_dir]
> +        for part in py_include_dir_parts:
> +            pro_lines.append(
> +                    'INCLUDEPATH += {}'.format(
> +                            self.qmake_quote(part)))
> 
>          # Python.h on Windows seems to embed the need for 
> pythonXY.lib, so tell
>          # it where it is.
> 
> 
> 
> 
>> On Oct 4, 2020, at 10:46 PM, Patrick Stinson <patrickkidd at gmail.com> 
>> wrote:
>> 
>> Maybe this is because sip is not handling the paths correctly?
>> 
>> Here is the first failing args to cl.exe. Note the paths returned from 
>> distutils.sysconfig.get_python_inc() are correct but sip doesn’t 
>> separate them on the ‘;’ token, and then maybe also doesn’t use the 
>> correct os.sep?
>> 
>> cl -c -nologo -Zc:wchar_t -FS -Zc:strictStrings -O2 -MD -W3 -w44456 
>> -w44457 -w44458 -DUNICODE -D_UNICODE -DWIN32 
>> -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DWIN64 -DPy_LIMITED_API=0x03040000 
>> -DNDEBUG -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -D_WINDLL -I. 
>> -I. -I.. 
>> -IC:/familydiagram/vendor/sysroot-dev/Python-3.7.8/include;C:/familydiagram/vendor/sysroot-dev/Python-3.7.8/PC 
>> -IC:\familydiagram\vendor\sysroot-dev\Qt-5.15.1\mkspecs\win32-msvc 
>> -Forelease\ @C:\Users\patrick\AppData\Local\Temp\nm1BE7.tmp
>> 
>>> On Oct 4, 2020, at 10:43 PM, Patrick Stinson <patrickkidd at gmail.com> 
>>> wrote:
>>> 
>>> sip-build for PyQt5 fails to find Python.h with Python [3.7.8] built 
>>> from source on Windows [10]. I imagine this has to do with how the 
>>> python source seems to have no notion of an install prefix on Windows 
>>> and leaves binaries in the build dir.
>>> 
>>> Is there any way to specify include dirs and probably also lib dirs 
>>> to sip-build for PyQt5? Python headers are in <PY_SOURCE>\include and 
>>> <PY_SOURCE>\PC.
>>> 
>>> -Patrick
>>