Adding python-config script to virtualenv bin dir

[madprog]

Should solve most of #169

[amchoukir]

I can confirm that this patch fixes issues building Valloric/ycmd

[Ivoz]

It seems you've forgotten to add/commit the file python-config into git with this PR.

[madprog]

Hello Matt,
The python-config file is gzipped and base64-ed, and inlined at the line 2239 of virtualenv.py, just like activate_this.py or distutils.cfg
Where should it be copied else?

[Ivoz]

@madprog the source for all such files needs to live in virtualenv_embedded. They should then be automatically included into virtualenv.py by running bin/rebuild-script.py.

[madprog]

Here is the commit with the missing file.

[Ivoz]

@madprog now I can see the contents of the file. It seems to me likely you copied this from a python 2 source. It uses the python 2 only print statement, so this is unsuitable to merge at the moment. Additionally, it doesn't cover the additional options available in a python3 python-config, you can see those here for instance.

[madprog]

@Ivoz Indeed it was at first copied from a python2-config. At that time (end of 2011), python3 was not that mainstream ;)
Please now find the python-config that you linked, updated so that it also runs with python2.
I compared the outputs using this zsh script:

#!/usr/bin/zsh

for i in prefix exec-prefix includes libs cflags ldflags extension-suffix help abiflags configdir; do
    echo "\x1b[32m$i\x1b[0m"

    PYTHON2_CMD="diff -u <(python2-config --$i 2>&1) <(python2 python-config --$i 2>&1)"
    PYTHON3_CMD="diff -u <(python3-config --$i 2>&1) <(python3 python-config --$i 2>&1)"

    if ! $SHELL -c "$PYTHON2_CMD" >/dev/null; then
        echo "\x1b[31mpython2\x1b[0m"
        $SHELL -c "$PYTHON2_CMD"
    fi

    if ! $SHELL -c "$PYTHON3_CMD" >/dev/null; then
        echo "\x1b[31mpython3\x1b[0m"
        $SHELL -c "$PYTHON3_CMD"
    fi
done

They are not exactly the same on my system: the order of the cflags or libflags is different (but similar), some may be duplicated, and the new options are supported for python2 (except --abiflags which was introduced in python3.2), but I think that it is sufficient. What do you think?

[Ivoz]

@madprog I have applied this through #798, thanks for most of the work :)