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    SubjectRe: [PATCH] Use the environment variable PYTHON if defined
    On Sun, 10 Apr 2011 00:12:45 +0530, Raghavendra D Prabhu wrote:

    > I have a question regarding the message that is displayed.
    > It says "No Python.h found" when variable PYTHON is not set
    > correctly, it would be better if it said "No Python.h for
    > Python 2.x found" since the header file supplied by Py3k is
    > also Python.h and in the rare case of only Py3k installed on
    > the box, it may be confusing.


    If PYTHON or PYTHON_CONFIG don't point to an executable, then
    there is a complaint about no executable being found.

    If PYTHON (or, more specifically, PYTHON_CONFIG) points to the
    Python *3* binary, then the message will be about Python 3 being

    If PYTHON or PYTHON_CONFIG point to an executable that does not
    provide a suitable `Python.h', then it says `No Python.h found'.

    Thus, I think all of the cases are covered pretty well.
    In particular, let's say that somebody triggers the third case,
    but is confused because he does indeed have Python 3 with a valid
    Python.h installed. That `No Python.h found' message will cause
    him to look at how he configured PYTHON{,_CONFIG}, and he'll
    see that he used the wrong executable (which is probably a
    fairly unlikely scenario, anyway). Thus, he will configure the
    right variable to point to the Python 3 executable, only to
    get a message that Python 3 is incompatible. Thus, he will then
    know that Python 2 is required.

    I suppose, though, we could simplify the experience for the user
    by giving a hint earlier on that Python 2 is required.

    The patch that follows fulfills your request. My advice is to
    save this email to /tmp/email and then apply it over the last
    couple of patches like this:

    $ git apply /tmp/email
    $ git commit -a --amend -C HEAD

    diff --git a/tools/perf/Makefile b/tools/perf/Makefile
    index 1fd46bf..b5276c7 100644
    --- a/tools/perf/Makefile
    +++ b/tools/perf/Makefile
    @@ -522,7 +522,7 @@ else

    ifneq ($(call try-cc,$(SOURCE_PYTHON_EMBED),$(FLAGS_PYTHON_EMBED)),y)
    - $(call disable-python,Python.h)
    + $(call disable-python,Python.h (for Python 2.x))

    ifneq ($(call try-cc,$(SOURCE_PYTHON_VERSION),$(FLAGS_PYTHON_EMBED)),y)

     \ /
      Last update: 2011-04-09 22:43    [W:0.039 / U:32.936 seconds]
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