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REL_16_13
config/python.m4
177 строк
7 KB
Peter Eisentraut
Unify DLSUFFIX on Darwin
06 июл 2022, 08:41
06 июл 2022, 08:41
b55f62a
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# # Autoconf macros for configuring the build of Python extension modules # # config/python.m4 # # PGAC_PATH_PYTHON # ---------------- # Look for Python and set the output variable 'PYTHON' if found, # fail otherwise. # # Since we are supporting only Python 3.x, prefer python3 to plain python. If # the latter exists at all, it very possibly points to python2. # As the Python 3 transition happens and PEP 394 isn't updated, we # need to cater to systems that don't have unversioned "python" by # default. Some systems ship with "python3" by default and perhaps # have "python" in an optional package. Some systems only have # "python2" and "python3", in which case it's reasonable to prefer the # newer version. AC_DEFUN([PGAC_PATH_PYTHON], [PGAC_PATH_PROGS(PYTHON, [python3 python]) AC_ARG_VAR(PYTHON, [Python program])dnl if test x"$PYTHON" = x""; then AC_MSG_ERROR([Python not found]) fi ]) # _PGAC_CHECK_PYTHON_DIRS # ----------------------- # Determine the name of various directories of a given Python installation, # as well as the Python version. AC_DEFUN([_PGAC_CHECK_PYTHON_DIRS], [AC_REQUIRE([PGAC_PATH_PYTHON]) python_fullversion=`${PYTHON} -c "import sys; print(sys.version)" | sed q` AC_MSG_NOTICE([using python $python_fullversion]) # python_fullversion is typically n.n.n plus some trailing junk python_majorversion=`echo "$python_fullversion" | sed '[s/^\([0-9]*\).*/\1/]'` python_minorversion=`echo "$python_fullversion" | sed '[s/^[0-9]*\.\([0-9]*\).*/\1/]'` python_version=`echo "$python_fullversion" | sed '[s/^\([0-9]*\.[0-9]*\).*/\1/]'` # Reject unsupported Python versions as soon as practical. if test "$python_majorversion" -lt 3; then AC_MSG_ERROR([Python version $python_version is too old (version 3 or later is required)]) fi AC_MSG_CHECKING([for Python sysconfig module]) if "${PYTHON}" -c 'import sysconfig' 2>&AS_MESSAGE_LOG_FD then AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) AC_MSG_ERROR([sysconfig module not found]) fi AC_MSG_CHECKING([Python configuration directory]) python_configdir=`${PYTHON} -c "import sysconfig; print(' '.join(filter(None,sysconfig.get_config_vars('LIBPL'))))"` AC_MSG_RESULT([$python_configdir]) AC_MSG_CHECKING([Python include directory]) python_includespec=`${PYTHON} -c "import sysconfig; print('-I' + sysconfig.get_config_var('INCLUDEPY'))"` if test "$PORTNAME" = win32 ; then python_includespec=`echo $python_includespec | sed 's,[[\]],/,g'` fi AC_MSG_RESULT([$python_includespec]) AC_SUBST(python_majorversion)[]dnl AC_SUBST(python_version)[]dnl AC_SUBST(python_includespec)[]dnl ])# _PGAC_CHECK_PYTHON_DIRS # PGAC_CHECK_PYTHON_EMBED_SETUP # ----------------------------- # # Set python_libdir to the path of the directory containing the Python shared # library. Set python_libspec to the -L/-l linker switches needed to link it. # Set python_additional_libs to contain any additional linker switches needed # for subsidiary libraries. # # In modern, well-configured Python installations, LIBDIR gives the correct # directory name and LDLIBRARY is the file name of the shlib. But in older # installations LDLIBRARY is frequently a useless path fragment, and it's also # possible that the shlib is in a standard library directory such as /usr/lib # so that LIBDIR is irrelevant. Also, some packagers put the .so symlink for # the shlib in ${python_configdir} even though Python itself never does. # We must also check that what we found is a shared library not a plain # library, which we do by checking its extension. (We used to rely on # Py_ENABLE_SHARED, but that only tells us that a shlib exists, not that # we found it.) AC_DEFUN([PGAC_CHECK_PYTHON_EMBED_SETUP], [AC_REQUIRE([_PGAC_CHECK_PYTHON_DIRS]) AC_MSG_CHECKING([how to link an embedded Python application]) python_libdir=`${PYTHON} -c "import sysconfig; print(' '.join(filter(None,sysconfig.get_config_vars('LIBDIR'))))"` python_ldlibrary=`${PYTHON} -c "import sysconfig; print(' '.join(filter(None,sysconfig.get_config_vars('LDLIBRARY'))))"` # If LDLIBRARY exists and has a shlib extension, use it verbatim. ldlibrary=`echo "${python_ldlibrary}" | sed -e 's/\.so$//' -e 's/\.dll$//' -e 's/\.dylib$//' -e 's/\.sl$//'` if test -e "${python_libdir}/${python_ldlibrary}" -a x"${python_ldlibrary}" != x"${ldlibrary}" then ldlibrary=`echo "${ldlibrary}" | sed "s/^lib//"` found_shlib=1 else # Otherwise, guess the base name of the shlib. # LDVERSION was added in Python 3.2, before that use VERSION, # or failing that, $python_version from _PGAC_CHECK_PYTHON_DIRS. python_ldversion=`${PYTHON} -c "import sysconfig; print(' '.join(filter(None,sysconfig.get_config_vars('LDVERSION'))))"` if test x"${python_ldversion}" != x""; then ldlibrary="python${python_ldversion}" else python_version_var=`${PYTHON} -c "import sysconfig; print(' '.join(filter(None,sysconfig.get_config_vars('VERSION'))))"` if test x"${python_version_var}" != x""; then ldlibrary="python${python_version_var}" else ldlibrary="python${python_version}" fi fi # Search for a likely-looking file. found_shlib=0 for d in "${python_libdir}" "${python_configdir}" /usr/lib64 /usr/lib do if test -e "$d/lib${ldlibrary}${DLSUFFIX}"; then python_libdir="$d" found_shlib=1 break 2 fi done # Some platforms (OpenBSD) require us to accept a bare versioned shlib # (".so.n.n") as well. However, check this only after failing to find # ".so" anywhere, because yet other platforms (Debian) put the .so # symlink in a different directory from the underlying versioned shlib. if test "$found_shlib" != 1; then for d in "${python_libdir}" "${python_configdir}" /usr/lib64 /usr/lib do for f in "$d/lib${ldlibrary}.so."* ; do if test -e "$f"; then python_libdir="$d" found_shlib=1 break 2 fi done done fi # As usual, Windows has its own ideas. Possible default library # locations include c:/Windows/System32 and (for Cygwin) /usr/bin, # and the "lib" prefix might not be there. if test "$found_shlib" != 1 -a \( "$PORTNAME" = win32 -o "$PORTNAME" = cygwin \); then for d in "${python_libdir}" "${python_configdir}" c:/Windows/System32 /usr/bin do for f in "$d/lib${ldlibrary}.dll" "$d/${ldlibrary}.dll" ; do if test -e "$f"; then python_libdir="$d" found_shlib=1 break 2 fi done done fi fi if test "$found_shlib" != 1; then AC_MSG_ERROR([could not find shared library for Python You might have to rebuild your Python installation. Refer to the documentation for details. Use --without-python to disable building PL/Python.]) fi python_libspec="-L${python_libdir} -l${ldlibrary}" python_additional_libs=`${PYTHON} -c "import sysconfig; print(' '.join(filter(None,sysconfig.get_config_vars('LIBS','LIBC','LIBM','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 ])# PGAC_CHECK_PYTHON_EMBED_SETUP