Re: Urgent help needed : portmaster dies on py-cairo

2009/7/6 b. f. <bf1783@xxxxxxxxxxxxxx>

Manish Jain wrote:

After 3-4 hours, portsnap died on graphics/py-cairo saying :
cannot find python headers

I'm guessing you meant "portmaster died" here ...

/usr/ports/graphics/py-cairo/work/pycairo-1.8.4/config.log says :
configure:4734: cc -E -I/usr/local/include conftest.c
conftest.c:10:28: error: ac_nonexistent.h: No such file or directory
configure:4741: $? = 1


cd /usr
find . -name 'ac_nonexistent.h'
#no results

As the name suggests, this header doesn't really exist. It's just a
dummy header used during a test in the configure script to see how the
compiler reacts when a header isn't there, in preparation for testing
for the presence of real headers. That shouldn't be the problem: are
you sure the configure script really failed at that point? If so,
something is probably wrong with your compiler or toolchain, and
that's usually bad news. :(

py-cairo-1.8.4 needs python2.6. My system has both python2.5 and
python2.6 installed, with their headers under
/usr/local/include/python2.5 and /usr/local/include/python2.6
respectively.

Why do you have both versions installed? 2.6 is largely
backwards-compatible with 2.5, so why not just rip out 2.5 and use 2.6
exclusively? You'll save some trouble and disk space. Make sure your
ports tree is up-to-date, so that PYTHON_DEFAULT_VERSION defaults to
python2.6. Then deinstall lang/python25 and reinstall lang/python26.
In particular, check to see that /usr/local/bin/python is present is a
link to /usr/local/bin/python2.6. If it isn't, then something is
wrong -- perhaps you have PYTHON_VERSION or PYTHON_DEFAULT_VERSION
defined to the wrong value, or your ports tree is corrupt. Then
rebuild all of the ports that depend upon python, and remove any
vestige of the old /usr/local/lib/python2.5 directory tree. If you've
stale ports that are still wired to use python2.5 for no good reason,
you can patch them or their port Makefiles, or put a workaround in
make.conf.

Any help on enabling py-cairo locate the python headers would be
greatly appreciated.

What is the output of:

"make -C /usr/ports/graphics/py-cairo -V CONFIGURE_ENV"

If PYTHON is in there, properly defined as the path to the python2.6
binary, and the binary actually exists, then the configure script
should succeed. If not, something is wrong. The configure script
uses:

PYTHON_INCLUDES=`$PYTHON-config --includes 2>/dev/null` to find the
proper Python.h. Is /usr/local/bin/python2.6-config missing or broken
on your system? What about /usr/local/include/python2.6/Python.h?

b.



Hello B,

Thanks for your help.

After running pkgdb -F, I find that there hundreds of ports depending on
python2.5. Looks to me it will be easier to backup my dstfiles and reinstall
the whole system afresh a 3rd time rather than trying to fix the existing
ports. This time I will install no packages from the installation media, and
build directly from ports instead. The first 2 ports I will build this time
will be lang/python26 followed by lang/python. I suppose this should set the
systemwide default python version to 2.6.

Before I undertake this 3rd attempt, I request a few clarifications so that
everything comes out fine this time around.

something is wrong -- perhaps you have PYTHON_VERSION or
PYTHON_DEFAULT_VERSION
defined to the wrong value, or your ports tree is corrupt. Then
rebuild all of the ports that depend upon python, and remove any
vestige of the old /usr/local/lib/python2.5 directory tree. If you've
stale ports that are still wired to use python2.5 for no good reason,
you can patch them or their port Makefiles, or put a workaround in
make.conf.

1) How do I find or set PYTHON_DEFAULT_VERSION ?
2) What workaround would be needed in make.conf to get 2.5-hardwired ports
to use 2.6 instead ?


Thanks for any help.

Regards
Manish Jain
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