Python3.4 detection on 9.6 configuration

PostgreSQL Friends:

Trying to build 9.6RC1, with Python3.4, on OpenIndiana (Illumos). It seems the detection of shared library status of the .so has changed. This appears to be related to a different(?) elucidation of python configuration.

A 'hardwired' change to the configure script to trap platform 'solaris' will work, but this seems the inappropriate approach.

Would be happy to work through this here - I'd like to make it a small 'contribution'.

Clipped from configure script:

1.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to link an embedded Python application" >&5

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$as_echo_n "checking how to link an embedded Python application... " >&6; }

3.

4.
python_libdir=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBDIR'))))"`

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python_ldlibrary=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LDLIBRARY'))))"`

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python_so=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('SO'))))"`

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echo "-----"

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echo "----- LOU MOD: python_so: $python_so"

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echo "-----"

10.

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configure finds '.so' on Python2.7

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configure finds '.cpython-34m.so' on Python3.4

13.

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------------- LATER in the config script, the following 'hardwired' change will 'fix' this, but is likely not the right approach:

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(our Python _is_ built as a shared lib. So, this is wonky, but it will work: )

16.

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# We need libpython as a shared library. With Python >=2.5, we

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# check the Py_ENABLE_SHARED setting. On Debian, the setting is not

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# correct before the jessie release (http://bugs.debian.org/695979).

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# We also want to support older Python versions. So as a fallback

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# we see if there is a file that is named like a shared library.

22.

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if test "$python_enable_shared" != 1; then

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if test "$PORTNAME" = darwin; then

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# macOS does supply a .dylib even though Py_ENABLE_SHARED does

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# not get set. The file detection logic below doesn't succeed

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# on older macOS versions, so make it explicit.

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python_enable_shared=1

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elif test "$PORTNAME" = win32; then

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# Windows also needs an explicit override.

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python_enable_shared=1

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# ----- MOD BY LOU: ----------------------------------------

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elif test "$PORTNAME" = solaris; then

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# Solaris explicit override.

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python_enable_shared=1

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else

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# We don't know the platform shared library extension here yet,

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# so we try some candidates.

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for dlsuffix in .so .sl; do

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if ls "$python_libdir"/libpython*${dlsuffix}* >/dev/null 2>&1; then

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python_enable_shared=1

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break

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fi

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done

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fi

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fi