granicus.if.org Git - postgresql/blob - config/python.m4

   1 #
   2 # Autoconf macros for configuring the build of Python extension modules
   3 #
   4 # config/python.m4
   5 #
   6
   7 # PGAC_PATH_PYTHON
   8 # ----------------
   9 # Look for Python and set the output variable 'PYTHON'
  10 # to 'python' if found, empty otherwise.
  11 AC_DEFUN([PGAC_PATH_PYTHON],
  12 [AC_PATH_PROG(PYTHON, python)
  13 if test x"$PYTHON" = x""; then
  14   AC_MSG_ERROR([Python not found])
  15 fi
  16 ])
  17
  18
  19 # _PGAC_CHECK_PYTHON_DIRS
  20 # -----------------------
  21 # Determine the name of various directories of a given Python installation.
  22 AC_DEFUN([_PGAC_CHECK_PYTHON_DIRS],
  23 [AC_REQUIRE([PGAC_PATH_PYTHON])
  24 AC_MSG_CHECKING([for Python distutils module])
  25 if "${PYTHON}" -c 'import distutils' 2>&AS_MESSAGE_LOG_FD
  26 then
  27     AC_MSG_RESULT(yes)
  28 else
  29     AC_MSG_RESULT(no)
  30     AC_MSG_ERROR([distutils module not found])
  31 fi
  32 AC_MSG_CHECKING([Python configuration directory])
  33 python_majorversion=`${PYTHON} -c "import sys; print(sys.version[[0]])"`
  34 python_version=`${PYTHON} -c "import sys; print(sys.version[[:3]])"`
  35 python_configdir=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBPL'))))"`
  36 AC_MSG_RESULT([$python_configdir])
  37
  38 AC_MSG_CHECKING([Python include directories])
  39 python_includespec=`${PYTHON} -c "
  40 import distutils.sysconfig
  41 a = '-I' + distutils.sysconfig.get_python_inc(False)
  42 b = '-I' + distutils.sysconfig.get_python_inc(True)
  43 if a == b:
  44     print(a)
  45 else:
  46     print(a + ' ' + b)"`
  47 if test "$PORTNAME" = win32 ; then
  48     python_includespec=`echo $python_includespec | sed 's,[[\]],/,g'`
  49 fi
  50 AC_MSG_RESULT([$python_includespec])
  51
  52 AC_SUBST(python_majorversion)[]dnl
  53 AC_SUBST(python_version)[]dnl
  54 AC_SUBST(python_includespec)[]dnl
  55 ])# _PGAC_CHECK_PYTHON_DIRS
  56
  57
  58 # PGAC_CHECK_PYTHON_EMBED_SETUP
  59 # -----------------------------
  60 #
  61 # Note: selecting libpython from python_configdir works in all Python
  62 # releases, but it generally finds a non-shared library, which means
  63 # that we are binding the python interpreter right into libplpython.so.
  64 # In Python 2.3 and up there should be a shared library available in
  65 # the main library location.
  66 AC_DEFUN([PGAC_CHECK_PYTHON_EMBED_SETUP],
  67 [AC_REQUIRE([_PGAC_CHECK_PYTHON_DIRS])
  68 AC_MSG_CHECKING([how to link an embedded Python application])
  69
  70 python_libdir=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBDIR'))))"`
  71 python_ldlibrary=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LDLIBRARY'))))"`
  72 python_so=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('SO'))))"`
  73 ldlibrary=`echo "${python_ldlibrary}" | sed "s/${python_so}$//"`
  74 python_enable_shared=`${PYTHON} -c "import distutils.sysconfig; print(distutils.sysconfig.get_config_vars().get('Py_ENABLE_SHARED',0))"`
  75
  76 if test x"${python_libdir}" != x"" -a x"${python_ldlibrary}" != x"" -a x"${python_ldlibrary}" != x"${ldlibrary}"
  77 then
  78         # New way: use the official shared library
  79         ldlibrary=`echo "${ldlibrary}" | sed "s/^lib//"`
  80         python_libspec="-L${python_libdir} -l${ldlibrary}"
  81 else
  82         # Old way: use libpython from python_configdir
  83         python_libdir="${python_configdir}"
  84         # LDVERSION was introduced in Python 3.2.
  85         python_ldversion=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LDVERSION'))))"`
  86         if test x"${python_ldversion}" = x""; then
  87                 python_ldversion=$python_version
  88         fi
  89         python_libspec="-L${python_libdir} -lpython${python_ldversion}"
  90 fi
  91
  92 python_additional_libs=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBS','LIBC','LIBM','BASEMODLIBS'))))"`
  93
  94 AC_MSG_RESULT([${python_libspec} ${python_additional_libs}])
  95
  96 AC_SUBST(python_libdir)[]dnl
  97 AC_SUBST(python_libspec)[]dnl
  98 AC_SUBST(python_additional_libs)[]dnl
  99
 100 ])# PGAC_CHECK_PYTHON_EMBED_SETUP