postgresql/config/python.m4
Peter Eisentraut a65ed83f8a Allow configure to deal with Python 3.0. Changes were:
print foo --> print(foo)
string.join(...) --> ' '.join(...)

These changes are backward compatible.

The actual plpython module appears to need significant updates to support
Python 3.0, though.  This change just relieves interested developers from
having to deal with Autoconf.
2009-01-04 00:54:15 +00:00

96 lines
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#
# Autoconf macros for configuring the build of Python extension modules
#
# $PostgreSQL: pgsql/config/python.m4,v 1.15 2009/01/04 00:54:15 petere Exp $
#
# PGAC_PATH_PYTHON
# ----------------
# Look for Python and set the output variable 'PYTHON'
# to 'python' if found, empty otherwise.
AC_DEFUN([PGAC_PATH_PYTHON],
[AC_PATH_PROG(PYTHON, python)
if test x"$PYTHON" = x""; then
AC_MSG_ERROR([Python not found])
fi
])
# _PGAC_CHECK_PYTHON_DIRS
# -----------------------
# Determine the name of various directories of a given Python installation.
AC_DEFUN([_PGAC_CHECK_PYTHON_DIRS],
[AC_REQUIRE([PGAC_PATH_PYTHON])
AC_MSG_CHECKING([for Python distutils module])
if "${PYTHON}" 2>&- -c 'import distutils'
then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
AC_MSG_ERROR([distutils module not found])
fi
AC_MSG_CHECKING([Python configuration directory])
python_version=`${PYTHON} -c "import sys; print(sys.version[[:3]])"`
python_configdir=`${PYTHON} -c "from distutils.sysconfig import get_python_lib as f; import os; print(os.path.join(f(plat_specific=1,standard_lib=1),'config'))"`
python_includespec=`${PYTHON} -c "import distutils.sysconfig; print('-I'+distutils.sysconfig.get_python_inc())"`
AC_SUBST(python_version)[]dnl
AC_SUBST(python_configdir)[]dnl
AC_SUBST(python_includespec)[]dnl
# This should be enough of a message.
AC_MSG_RESULT([$python_configdir])
])# _PGAC_CHECK_PYTHON_DIRS
# PGAC_CHECK_PYTHON_EMBED_SETUP
# -----------------------------
#
# Note: selecting libpython from python_configdir works in all Python
# releases, but it generally finds a non-shared library, which means
# that we are binding the python interpreter right into libplpython.so.
# In Python 2.3 and up there should be a shared library available in
# the main library location.
AC_DEFUN([PGAC_CHECK_PYTHON_EMBED_SETUP],
[AC_REQUIRE([_PGAC_CHECK_PYTHON_DIRS])
AC_MSG_CHECKING([how to link an embedded Python application])
python_libdir=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBDIR'))))"`
python_ldlibrary=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LDLIBRARY'))))"`
python_so=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('SO'))))"`
ldlibrary=`echo "${python_ldlibrary}" | sed "s/${python_so}$//"`
if test x"${python_libdir}" != x"" -a x"${python_ldlibrary}" != x"" -a x"${python_ldlibrary}" != x"${ldlibrary}"
then
# New way: use the official shared library
ldlibrary=`echo "${ldlibrary}" | sed "s/^lib//"`
python_libspec="-L${python_libdir} -l${ldlibrary}"
else
# Old way: use libpython from python_configdir
python_libdir="${python_configdir}"
python_libspec="-L${python_libdir} -lpython${python_version}"
fi
python_additional_libs=`${PYTHON} -c "import distutils.sysconfig,string; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBS','LIBC','LIBM','LOCALMODLIBS','BASEMODLIBS'))))"`
AC_MSG_RESULT([${python_libspec} ${python_additional_libs}])
AC_SUBST(python_libdir)[]dnl
AC_SUBST(python_libspec)[]dnl
AC_SUBST(python_additional_libs)[]dnl
# threaded python is not supported on bsd's
AC_MSG_CHECKING(whether Python is compiled with thread support)
pythreads=`${PYTHON} -c "import sys; print(int('thread' in sys.builtin_module_names))"`
if test "$pythreads" = "1"; then
AC_MSG_RESULT(yes)
case $host_os in
openbsd*|freebsd*)
AC_MSG_ERROR([threaded Python not supported on this platform])
;;
esac
else
AC_MSG_RESULT(no)
fi
])# PGAC_CHECK_PYTHON_EMBED_SETUP