dnl ************************************************************

dnl * Please run autoreconf -ivf -Werror to test your changes! *

dnl ************************************************************

dnl

dnl Python's configure script requires autoconf 2.71, autoconf-archive,

dnl aclocal 1.16, and pkg-config.

dnl

dnl It is recommended to use the Tools/build/regen-configure.sh shell script

dnl to regenerate the configure script.

dnl

# Set VERSION so we only need to edit in one place (i.e., here)

m4_define([PYTHON_VERSION], [3.13])

AC_PREREQ([2.71])

AC_INIT([python],[PYTHON_VERSION],[https://github.com/python/cpython/issues/])

m4_ifdef(

[AX_C_FLOAT_WORDS_BIGENDIAN],

[],

[AC_MSG_ERROR([Please install autoconf-archive package and re-run autoreconf])]

)dnl

m4_ifdef(

[PKG_PROG_PKG_CONFIG],

[],

[AC_MSG_ERROR([Please install pkgconf's m4 macro package and re-run autoreconf])]

)dnl

dnl Helpers for saving and restoring environment variables:

dnl - _SAVE_VAR([VAR]) Helper for SAVE_ENV; stores VAR as save_VAR

dnl - _RESTORE_VAR([VAR]) Helper for RESTORE_ENV; restores VAR from save_VAR

dnl - SAVE_ENV Saves CFLAGS, LDFLAGS, LIBS, and CPPFLAGS

dnl - RESTORE_ENV Restores CFLAGS, LDFLAGS, LIBS, and CPPFLAGS

dnl - WITH_SAVE_ENV([SCRIPT]) Runs SCRIPT wrapped with SAVE_ENV/RESTORE_ENV

AC_DEFUN([_SAVE_VAR], [AS_VAR_COPY([save_][$1], [$1])])dnl

AC_DEFUN([_RESTORE_VAR], [AS_VAR_COPY([$1], [save_][$1])])dnl

AC_DEFUN([SAVE_ENV],

[_SAVE_VAR([CFLAGS])]

[_SAVE_VAR([CPPFLAGS])]

[_SAVE_VAR([LDFLAGS])]

[_SAVE_VAR([LIBS])]

)dnl

AC_DEFUN([RESTORE_ENV],

[_RESTORE_VAR([CFLAGS])]

[_RESTORE_VAR([CPPFLAGS])]

[_RESTORE_VAR([LDFLAGS])]

[_RESTORE_VAR([LIBS])]

)dnl

AC_DEFUN([WITH_SAVE_ENV],

[SAVE_ENV]

[$1]

[RESTORE_ENV]

)dnl

dnl PY_CHECK_FUNC(FUNCTION, [INCLUDES], [AC_DEFINE-VAR])

AC_DEFUN([PY_CHECK_FUNC],

[ AS_VAR_PUSHDEF([py_var], [ac_cv_func_$1])

AS_VAR_PUSHDEF([py_define], m4_ifblank([$3], [[HAVE_]m4_toupper($1)], [$3]))

AC_CACHE_CHECK(

[for $1],

[py_var],

[AC_COMPILE_IFELSE(

[AC_LANG_PROGRAM([$2], [void *x=$1])],

[AS_VAR_SET([py_var], [yes])],

[AS_VAR_SET([py_var], [no])])]

)

AS_VAR_IF(

[py_var],

[yes],

[AC_DEFINE([py_define], [1], [Define if you have the '$1' function.])])

AS_VAR_POPDEF([py_var])

AS_VAR_POPDEF([py_define])

])

dnl PY_CHECK_LIB(LIBRARY, FUNCTION, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND], [OTHER-LIBRARIES])

dnl Like AC_CHECK_LIB() but does not modify LIBS

AC_DEFUN([PY_CHECK_LIB],

[AS_VAR_COPY([py_check_lib_save_LIBS], [LIBS])]

[AC_CHECK_LIB([$1], [$2], [$3], [$4], [$5])]

[AS_VAR_COPY([LIBS], [py_check_lib_save_LIBS])]

)

dnl PY_CHECK_EMSCRIPTEN_PORT(PKG_VAR, [EMPORT_ARGS])

dnl Use Emscripten port unless user passes ${PKG_VAR}_CFLAGS

dnl or ${PKG_VAR}_LIBS to configure.

AC_DEFUN([PY_CHECK_EMSCRIPTEN_PORT], [

AS_VAR_PUSHDEF([py_cflags], [$1_CFLAGS])

AS_VAR_PUSHDEF([py_libs], [$1_LIBS])

AS_IF([test "$ac_sys_system" = "Emscripten" -a -z "$py_cflags" -a -z "$py_libs"], [

py_cflags="$2"

py_libs="$2"

])

AS_VAR_POPDEF([py_cflags])

AS_VAR_POPDEF([py_libs])

])

AC_SUBST([BASECPPFLAGS])

if test "$srcdir" != . -a "$srcdir" != "$(pwd)"; then

# If we're building out-of-tree, we need to make sure the following

# resources get picked up before their $srcdir counterparts.

# Objects/ -> typeslots.inc

# Include/ -> Python.h

# (A side effect of this is that these resources will automatically be

# regenerated when building out-of-tree, regardless of whether or not

# the $srcdir counterpart is up-to-date. This is an acceptable trade

# off.)

BASECPPFLAGS="-IObjects -IInclude -IPython"

else

BASECPPFLAGS=""

fi

AC_SUBST([GITVERSION])

AC_SUBST([GITTAG])

AC_SUBST([GITBRANCH])

if test -e $srcdir/.git

then

AC_CHECK_PROG([HAS_GIT], [git], [found], [not-found])

else

HAS_GIT=no-repository

fi

if test $HAS_GIT = found

then

GITVERSION="git --git-dir \$(srcdir)/.git rev-parse --short HEAD"

GITTAG="git --git-dir \$(srcdir)/.git describe --all --always --dirty"

GITBRANCH="git --git-dir \$(srcdir)/.git name-rev --name-only HEAD"

else

GITVERSION=""

GITTAG=""

GITBRANCH=""

fi

AC_CONFIG_SRCDIR([Include/object.h])

AC_CONFIG_HEADERS([pyconfig.h])

AC_CANONICAL_HOST

AC_SUBST([build])

AC_SUBST([host])

AS_VAR_IF([cross_compiling], [maybe],

[AC_MSG_ERROR([Cross compiling required --host=HOST-TUPLE and --build=ARCH])]

)

# pybuilddir.txt will be created by --generate-posix-vars in the Makefile

rm -f pybuilddir.txt

AC_ARG_WITH([build-python],

[AS_HELP_STRING([--with-build-python=python]PYTHON_VERSION,

[path to build python binary for cross compiling (default: _bootstrap_python or python]PYTHON_VERSION[)])],

[

AC_MSG_CHECKING([for --with-build-python])

AS_VAR_IF([with_build_python], [yes], [with_build_python=python$PACKAGE_VERSION])

AS_VAR_IF([with_build_python], [no], [AC_MSG_ERROR([invalid --with-build-python option: expected path or "yes", not "no"])])

if ! $(command -v "$with_build_python" >/dev/null 2>&1); then

AC_MSG_ERROR([invalid or missing build python binary "$with_build_python"])

fi

build_python_ver=$($with_build_python -c "import sys; print(f'{sys.version_info.major}.{sys.version_info.minor}')")

if test "$build_python_ver" != "$PACKAGE_VERSION"; then

AC_MSG_ERROR(["$with_build_python" has incompatible version $build_python_ver (expected: $PACKAGE_VERSION)])

fi

dnl Build Python interpreter is used for regeneration and freezing.

ac_cv_prog_PYTHON_FOR_REGEN=$with_build_python

PYTHON_FOR_FREEZE="$with_build_python"

PYTHON_FOR_BUILD='_PYTHON_PROJECT_BASE=$(abs_builddir) _PYTHON_HOST_PLATFORM=$(_PYTHON_HOST_PLATFORM) PYTHONPATH=$(shell test -f pybuilddir.txt && echo $(abs_builddir)/`cat pybuilddir.txt`:)$(srcdir)/Lib _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH) '$with_build_python

AC_MSG_RESULT([$with_build_python])

], [

AS_VAR_IF([cross_compiling], [yes],

[AC_MSG_ERROR([Cross compiling requires --with-build-python])]

)

PYTHON_FOR_BUILD='./$(BUILDPYTHON) -E'

PYTHON_FOR_FREEZE="./_bootstrap_python"

]

)

AC_SUBST([PYTHON_FOR_BUILD])

AC_MSG_CHECKING([for Python interpreter freezing])

AC_MSG_RESULT([$PYTHON_FOR_FREEZE])

AC_SUBST([PYTHON_FOR_FREEZE])

AS_VAR_IF([cross_compiling], [yes],

[

dnl external build Python, freezing depends on Programs/_freeze_module.py

FREEZE_MODULE_BOOTSTRAP='$(PYTHON_FOR_FREEZE) $(srcdir)/Programs/_freeze_module.py'

FREEZE_MODULE_BOOTSTRAP_DEPS='$(srcdir)/Programs/_freeze_module.py'

FREEZE_MODULE='$(FREEZE_MODULE_BOOTSTRAP)'

FREEZE_MODULE_DEPS='$(FREEZE_MODULE_BOOTSTRAP_DEPS)'

PYTHON_FOR_BUILD_DEPS=''

],

[

dnl internal build tools also depend on Programs/_freeze_module and _bootstrap_python.

FREEZE_MODULE_BOOTSTRAP='./Programs/_freeze_module'

FREEZE_MODULE_BOOTSTRAP_DEPS="Programs/_freeze_module"

FREEZE_MODULE='$(PYTHON_FOR_FREEZE) $(srcdir)/Programs/_freeze_module.py'

FREEZE_MODULE_DEPS="_bootstrap_python \$(srcdir)/Programs/_freeze_module.py"

PYTHON_FOR_BUILD_DEPS='$(BUILDPYTHON)'

]

)

AC_SUBST([FREEZE_MODULE_BOOTSTRAP])

AC_SUBST([FREEZE_MODULE_BOOTSTRAP_DEPS])

AC_SUBST([FREEZE_MODULE])

AC_SUBST([FREEZE_MODULE_DEPS])

AC_SUBST([PYTHON_FOR_BUILD_DEPS])

AC_CHECK_PROGS([PYTHON_FOR_REGEN],

[python$PACKAGE_VERSION python3.13 python3.12 python3.11 python3.10 python3 python],

[python3])

AC_SUBST([PYTHON_FOR_REGEN])

AC_MSG_CHECKING([Python for regen version])

if command -v "$PYTHON_FOR_REGEN" >/dev/null 2>&1; then

AC_MSG_RESULT([$($PYTHON_FOR_REGEN -V 2>/dev/null)])

else

AC_MSG_RESULT([missing])

fi

dnl Ensure that if prefix is specified, it does not end in a slash. If

dnl it does, we get path names containing '//' which is both ugly and

dnl can cause trouble.

dnl Last slash shouldn't be stripped if prefix=/

if test "$prefix" != "/"; then

prefix=`echo "$prefix" | sed -e 's/\/$//g'`

fi

dnl This is for stuff that absolutely must end up in pyconfig.h.

dnl Please use pyport.h instead, if possible.

AH_TOP([

#ifndef Py_PYCONFIG_H

#define Py_PYCONFIG_H

])

AH_BOTTOM([

/* Define the macros needed if on a UnixWare 7.x system. */

#if defined(__USLC__) && defined(__SCO_VERSION__)

#define STRICT_SYSV_CURSES /* Don't use ncurses extensions */

#endif

#endif /*Py_PYCONFIG_H*/

])

# We don't use PACKAGE_ variables, and they cause conflicts

# with other autoconf-based packages that include Python.h

grep -v 'define PACKAGE_' <confdefs.h >confdefs.h.new

rm confdefs.h

mv confdefs.h.new confdefs.h

AC_SUBST([VERSION])

VERSION=PYTHON_VERSION

# Version number of Python's own shared library file.

AC_SUBST([SOVERSION])

SOVERSION=1.0

# The later definition of _XOPEN_SOURCE and _POSIX_C_SOURCE disables

# certain features on NetBSD, so we need _NETBSD_SOURCE to re-enable

# them.

AC_DEFINE([_NETBSD_SOURCE], [1],

[Define on NetBSD to activate all library features])

# The later definition of _XOPEN_SOURCE and _POSIX_C_SOURCE disables

# certain features on FreeBSD, so we need __BSD_VISIBLE to re-enable

# them.

AC_DEFINE([__BSD_VISIBLE], [1],

[Define on FreeBSD to activate all library features])

# The later definition of _XOPEN_SOURCE and _POSIX_C_SOURCE disables

# certain features on Mac OS X, so we need _DARWIN_C_SOURCE to re-enable

# them.

AC_DEFINE([_DARWIN_C_SOURCE], [1],

[Define on Darwin to activate all library features])

define_xopen_source=yes

# Arguments passed to configure.

AC_SUBST([CONFIG_ARGS])

CONFIG_ARGS="$ac_configure_args"

dnl Allow users to disable pkg-config or require pkg-config

AC_ARG_WITH([pkg-config],

[AS_HELP_STRING([[--with-pkg-config=[yes|no|check]]],

[use pkg-config to detect build options (default is check)])],

[],

[with_pkg_config=check]

)

AS_CASE([$with_pkg_config],

[yes|check], [

if test -z "$PKG_CONFIG"; then

dnl invalidate stale config.cache values

AS_UNSET([PKG_CONFIG])

AS_UNSET([ac_cv_path_ac_pt_PKG_CONFIG])

AS_UNSET([ac_cv_prog_ac_ct_PKG_CONFIG])

fi

PKG_PROG_PKG_CONFIG

],

[no], [

PKG_CONFIG=''

dnl force AX_CHECK_OPENSSL to ignore pkg-config

ac_cv_path_ac_pt_PKG_CONFIG=''

ac_cv_prog_ac_ct_PKG_CONFIG=''

],

[AC_MSG_ERROR([invalid argument --with-pkg-config=$with_pkg_config])]

)

if test "$with_pkg_config" = yes -a -z "$PKG_CONFIG"; then

AC_MSG_ERROR([pkg-config is required])]

fi

# Set name for machine-dependent library files

AC_ARG_VAR([MACHDEP], [name for machine-dependent library files])

AC_MSG_CHECKING([MACHDEP])

if test -z "$MACHDEP"

then

# avoid using uname for cross builds

if test "$cross_compiling" = yes; then

# ac_sys_system and ac_sys_release are used for setting

# a lot of different things including 'define_xopen_source'

# in the case statement below.

case "$host" in

*-*-linux-android*)

ac_sys_system=Linux-android

;;

*-*-linux*)

ac_sys_system=Linux

;;

*-*-cygwin*)

ac_sys_system=Cygwin

;;

*-*-vxworks*)

ac_sys_system=VxWorks

;;

*-*-emscripten)

ac_sys_system=Emscripten

;;

*-*-wasi)

ac_sys_system=WASI

;;

*)

# for now, limit cross builds to known configurations

MACHDEP="unknown"

AC_MSG_ERROR([cross build not supported for $host])

esac

ac_sys_release=

else

ac_sys_system=`uname -s`

if test "$ac_sys_system" = "AIX" \

-o "$ac_sys_system" = "UnixWare" -o "$ac_sys_system" = "OpenUNIX"; then

ac_sys_release=`uname -v`

else

ac_sys_release=`uname -r`

fi

fi

ac_md_system=`echo $ac_sys_system |

tr -d '[/ ]' | tr '[[A-Z]]' '[[a-z]]'`

ac_md_release=`echo $ac_sys_release |

tr -d '[/ ]' | sed 's/^[[A-Z]]\.//' | sed 's/\..*//'`

MACHDEP="$ac_md_system$ac_md_release"

case $MACHDEP in

aix*) MACHDEP="aix";;

linux*) MACHDEP="linux";;

cygwin*) MACHDEP="cygwin";;

darwin*) MACHDEP="darwin";;

'') MACHDEP="unknown";;

esac

if test "$ac_sys_system" = "SunOS"; then

# For Solaris, there isn't an OS version specific macro defined

# in most compilers, so we define one here.

SUNOS_VERSION=`echo $ac_sys_release | sed -e 's!\.\([0-9]\)$!.0\1!g' | tr -d '.'`

AC_DEFINE_UNQUOTED([Py_SUNOS_VERSION], [$SUNOS_VERSION],

[The version of SunOS/Solaris as reported by `uname -r' without the dot.])

fi

fi

AC_MSG_RESULT(["$MACHDEP"])

AC_MSG_CHECKING([for --enable-universalsdk])

AC_ARG_ENABLE([universalsdk],

AS_HELP_STRING([--enable-universalsdk@<:@=SDKDIR@:>@],

[create a universal binary build.

SDKDIR specifies which macOS SDK should be used to perform the build,

see Mac/README.rst. (default is no)]),

[

case $enableval in

yes)

# Locate the best usable SDK, see Mac/README for more

# information

enableval="`/usr/bin/xcodebuild -version -sdk macosx Path 2>/dev/null`"

if ! ( echo $enableval | grep -E '\.sdk' 1>/dev/null )

then

enableval=/Developer/SDKs/MacOSX10.4u.sdk

if test ! -d "${enableval}"

then

enableval=/

fi

fi

;;

esac

case $enableval in

no)

UNIVERSALSDK=

enable_universalsdk=

;;

*)

UNIVERSALSDK=$enableval

if test ! -d "${UNIVERSALSDK}"

then

AC_MSG_ERROR([--enable-universalsdk specifies non-existing SDK: ${UNIVERSALSDK}])

fi

;;

esac

],[

UNIVERSALSDK=

enable_universalsdk=

])

if test -n "${UNIVERSALSDK}"

then

AC_MSG_RESULT([${UNIVERSALSDK}])

else

AC_MSG_RESULT([no])

fi

AC_SUBST([UNIVERSALSDK])

AC_SUBST([ARCH_RUN_32BIT])

ARCH_RUN_32BIT=""

# For backward compatibility reasons we prefer to select '32-bit' if available,

# otherwise use 'intel'

UNIVERSAL_ARCHS="32-bit"

if test "`uname -s`" = "Darwin"

then

if test -n "${UNIVERSALSDK}"

then

if test -z "`/usr/bin/file -L "${UNIVERSALSDK}/usr/lib/libSystem.dylib" | grep ppc`"

then

UNIVERSAL_ARCHS="intel"

fi

fi

fi

AC_SUBST([LIPO_32BIT_FLAGS])

AC_SUBST([LIPO_INTEL64_FLAGS])

AC_MSG_CHECKING([for --with-universal-archs])

AC_ARG_WITH([universal-archs],

AS_HELP_STRING([--with-universal-archs=ARCH],

[specify the kind of macOS universal binary that should be created.

This option is only valid when --enable-universalsdk is set; options are:

("universal2", "intel-64", "intel-32", "intel", "32-bit",

"64-bit", "3-way", or "all")

see Mac/README.rst]),

[

UNIVERSAL_ARCHS="$withval"

],

[])

if test -n "${UNIVERSALSDK}"

then

AC_MSG_RESULT([${UNIVERSAL_ARCHS}])

else

AC_MSG_RESULT([no])

fi

AC_ARG_WITH([framework-name],

AS_HELP_STRING([--with-framework-name=FRAMEWORK],

[specify the name for the python framework on macOS

only valid when --enable-framework is set. see Mac/README.rst

(default is 'Python')]),

[

PYTHONFRAMEWORK=${withval}

PYTHONFRAMEWORKDIR=${withval}.framework

PYTHONFRAMEWORKIDENTIFIER=org.python.`echo $withval | tr '[A-Z]' '[a-z]'`

],[

PYTHONFRAMEWORK=Python

PYTHONFRAMEWORKDIR=Python.framework

PYTHONFRAMEWORKIDENTIFIER=org.python.python

])

dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output

AC_ARG_ENABLE([framework],

AS_HELP_STRING([--enable-framework@<:@=INSTALLDIR@:>@],

[create a Python.framework rather than a traditional Unix install.

optional INSTALLDIR specifies the installation path. see Mac/README.rst

(default is no)]),

[

case $enableval in

yes)

enableval=/Library/Frameworks

esac

case $enableval in

no)

PYTHONFRAMEWORK=

PYTHONFRAMEWORKDIR=no-framework

PYTHONFRAMEWORKPREFIX=

PYTHONFRAMEWORKINSTALLDIR=

PYTHONFRAMEWORKINSTALLNAMEPREFIX=

RESSRCDIR=

FRAMEWORKINSTALLFIRST=

FRAMEWORKINSTALLLAST=

FRAMEWORKALTINSTALLFIRST=

FRAMEWORKALTINSTALLLAST=

FRAMEWORKPYTHONW=

INSTALLTARGETS="commoninstall bininstall maninstall"

if test "x${prefix}" = "xNONE"; then

FRAMEWORKUNIXTOOLSPREFIX="${ac_default_prefix}"

else

FRAMEWORKUNIXTOOLSPREFIX="${prefix}"

fi

enable_framework=

;;

*)

PYTHONFRAMEWORKPREFIX="${enableval}"

PYTHONFRAMEWORKINSTALLDIR=$PYTHONFRAMEWORKPREFIX/$PYTHONFRAMEWORKDIR

FRAMEWORKINSTALLFIRST="frameworkinstallstructure"

FRAMEWORKALTINSTALLFIRST="frameworkinstallstructure "

case $ac_sys_system in #(

Darwin) :

FRAMEWORKINSTALLLAST="frameworkinstallmaclib frameworkinstallapps frameworkinstallunixtools"

FRAMEWORKALTINSTALLLAST="frameworkinstallmaclib frameworkinstallapps frameworkaltinstallunixtools"

FRAMEWORKPYTHONW="frameworkpythonw"

FRAMEWORKINSTALLAPPSPREFIX="/Applications"

INSTALLTARGETS="commoninstall bininstall maninstall"

if test "x${prefix}" = "xNONE" ; then

FRAMEWORKUNIXTOOLSPREFIX="${ac_default_prefix}"

else

FRAMEWORKUNIXTOOLSPREFIX="${prefix}"

fi

case "${enableval}" in

/System*)

FRAMEWORKINSTALLAPPSPREFIX="/Applications"

if test "${prefix}" = "NONE" ; then

# See below

FRAMEWORKUNIXTOOLSPREFIX="/usr"

fi

;;

/Library*)

FRAMEWORKINSTALLAPPSPREFIX="/Applications"

;;

*/Library/Frameworks)

MDIR="`dirname "${enableval}"`"

MDIR="`dirname "${MDIR}"`"

FRAMEWORKINSTALLAPPSPREFIX="${MDIR}/Applications"

if test "${prefix}" = "NONE"; then

# User hasn't specified the

# --prefix option, but wants to install

# the framework in a non-default location,

# ensure that the compatibility links get

# installed relative to that prefix as well

# instead of in /usr/local.

FRAMEWORKUNIXTOOLSPREFIX="${MDIR}"

fi

;;

*)

FRAMEWORKINSTALLAPPSPREFIX="/Applications"

;;

esac

prefix=$PYTHONFRAMEWORKINSTALLDIR/Versions/$VERSION

PYTHONFRAMEWORKINSTALLNAMEPREFIX=${prefix}

RESSRCDIR=Mac/Resources/framework

# Add files for Mac specific code to the list of output

# files:

AC_CONFIG_FILES([Mac/Makefile])

AC_CONFIG_FILES([Mac/PythonLauncher/Makefile])

AC_CONFIG_FILES([Mac/Resources/framework/Info.plist])

AC_CONFIG_FILES([Mac/Resources/app/Info.plist])

;;

*)

AC_MSG_ERROR([Unknown platform for framework build])

;;

esac

esac

],[

PYTHONFRAMEWORK=

PYTHONFRAMEWORKDIR=no-framework

PYTHONFRAMEWORKPREFIX=

PYTHONFRAMEWORKINSTALLDIR=

PYTHONFRAMEWORKINSTALLNAMEPREFIX=

RESSRCDIR=

FRAMEWORKINSTALLFIRST=

FRAMEWORKINSTALLLAST=

FRAMEWORKALTINSTALLFIRST=

FRAMEWORKALTINSTALLLAST=

FRAMEWORKPYTHONW=

INSTALLTARGETS="commoninstall bininstall maninstall"

if test "x${prefix}" = "xNONE" ; then

FRAMEWORKUNIXTOOLSPREFIX="${ac_default_prefix}"

else

FRAMEWORKUNIXTOOLSPREFIX="${prefix}"

fi

enable_framework=

])

AC_SUBST([PYTHONFRAMEWORK])

AC_SUBST([PYTHONFRAMEWORKIDENTIFIER])

AC_SUBST([PYTHONFRAMEWORKDIR])

AC_SUBST([PYTHONFRAMEWORKPREFIX])

AC_SUBST([PYTHONFRAMEWORKINSTALLDIR])

AC_SUBST([PYTHONFRAMEWORKINSTALLNAMEPREFIX])

AC_SUBST([RESSRCDIR])

AC_SUBST([FRAMEWORKINSTALLFIRST])

AC_SUBST([FRAMEWORKINSTALLLAST])

AC_SUBST([FRAMEWORKALTINSTALLFIRST])

AC_SUBST([FRAMEWORKALTINSTALLLAST])

AC_SUBST([FRAMEWORKPYTHONW])

AC_SUBST([FRAMEWORKUNIXTOOLSPREFIX])

AC_SUBST([FRAMEWORKINSTALLAPPSPREFIX])

AC_SUBST([INSTALLTARGETS])

AC_DEFINE_UNQUOTED([_PYTHONFRAMEWORK], ["${PYTHONFRAMEWORK}"],

[framework name])

AC_SUBST([_PYTHON_HOST_PLATFORM])

if test "$cross_compiling" = yes; then

case "$host" in

*-*-linux*)

case "$host_cpu" in

arm*)

_host_ident=arm

;;

*)

_host_ident=$host_cpu

esac

;;

*-*-cygwin*)

_host_ident=

;;

*-*-vxworks*)

_host_ident=$host_cpu

;;

wasm32-*-* | wasm64-*-*)

_host_ident=$host_cpu

;;

*)

# for now, limit cross builds to known configurations

MACHDEP="unknown"

AC_MSG_ERROR([cross build not supported for $host])

esac

_PYTHON_HOST_PLATFORM="$MACHDEP${_host_ident:+-$_host_ident}"

fi

# Some systems cannot stand _XOPEN_SOURCE being defined at all; they

# disable features if it is defined, without any means to access these

# features as extensions. For these systems, we skip the definition of

# _XOPEN_SOURCE. Before adding a system to the list to gain access to

# some feature, make sure there is no alternative way to access this

# feature. Also, when using wildcards, make sure you have verified the

# need for not defining _XOPEN_SOURCE on all systems matching the

# wildcard, and that the wildcard does not include future systems

# (which may remove their limitations).

dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output

case $ac_sys_system/$ac_sys_release in

# On OpenBSD, select(2) is not available if _XOPEN_SOURCE is defined,

# even though select is a POSIX function. Reported by J. Ribbens.

# Reconfirmed for OpenBSD 3.3 by Zachary Hamm, for 3.4 by Jason Ish.

# In addition, Stefan Krah confirms that issue #1244610 exists through

# OpenBSD 4.6, but is fixed in 4.7.

OpenBSD/2.* | OpenBSD/3.* | OpenBSD/4.@<:@0123456@:>@)

define_xopen_source=no

# OpenBSD undoes our definition of __BSD_VISIBLE if _XOPEN_SOURCE is

# also defined. This can be overridden by defining _BSD_SOURCE

# As this has a different meaning on Linux, only define it on OpenBSD

AC_DEFINE([_BSD_SOURCE], [1],

[Define on OpenBSD to activate all library features])

;;

OpenBSD/*)

# OpenBSD undoes our definition of __BSD_VISIBLE if _XOPEN_SOURCE is

# also defined. This can be overridden by defining _BSD_SOURCE

# As this has a different meaning on Linux, only define it on OpenBSD

AC_DEFINE([_BSD_SOURCE], [1],

[Define on OpenBSD to activate all library features])

;;

# Defining _XOPEN_SOURCE on NetBSD version prior to the introduction of

# _NETBSD_SOURCE disables certain features (eg. setgroups). Reported by

# Marc Recht

NetBSD/1.5 | NetBSD/1.5.* | NetBSD/1.6 | NetBSD/1.6.* | NetBSD/1.6@<:@A-S@:>@)

define_xopen_source=no;;

# From the perspective of Solaris, _XOPEN_SOURCE is not so much a

# request to enable features supported by the standard as a request

# to disable features not supported by the standard. The best way

# for Python to use Solaris is simply to leave _XOPEN_SOURCE out

# entirely and define __EXTENSIONS__ instead.

SunOS/*)

define_xopen_source=no;;

# On UnixWare 7, u_long is never defined with _XOPEN_SOURCE,

# but used in /usr/include/netinet/tcp.h. Reported by Tim Rice.

# Reconfirmed for 7.1.4 by Martin v. Loewis.

OpenUNIX/8.0.0| UnixWare/7.1.@<:@0-4@:>@)

define_xopen_source=no;;

# On OpenServer 5, u_short is never defined with _XOPEN_SOURCE,

# but used in struct sockaddr.sa_family. Reported by Tim Rice.

SCO_SV/3.2)

define_xopen_source=no;;

# On MacOS X 10.2, a bug in ncurses.h means that it craps out if

# _XOPEN_EXTENDED_SOURCE is defined. Apparently, this is fixed in 10.3, which

# identifies itself as Darwin/7.*

# On Mac OS X 10.4, defining _POSIX_C_SOURCE or _XOPEN_SOURCE

# disables platform specific features beyond repair.

# On Mac OS X 10.3, defining _POSIX_C_SOURCE or _XOPEN_SOURCE

# has no effect, don't bother defining them

Darwin/@<:@6789@:>@.*)

define_xopen_source=no;;

Darwin/@<:@[12]@:>@@<:@0-9@:>@.*)

define_xopen_source=no;;

# On QNX 6.3.2, defining _XOPEN_SOURCE prevents netdb.h from

# defining NI_NUMERICHOST.

QNX/6.3.2)

define_xopen_source=no

;;

# On VxWorks, defining _XOPEN_SOURCE causes compile failures

# in network headers still using system V types.

VxWorks/*)

define_xopen_source=no

;;

# On HP-UX, defining _XOPEN_SOURCE to 600 or greater hides

# chroot() and other functions

hp*|HP*)

define_xopen_source=no

;;

esac

if test $define_xopen_source = yes

then

# X/Open 7, incorporating POSIX.1-2008

AC_DEFINE([_XOPEN_SOURCE], [700],

[Define to the level of X/Open that your system supports])

# On Tru64 Unix 4.0F, defining _XOPEN_SOURCE also requires

# definition of _XOPEN_SOURCE_EXTENDED and _POSIX_C_SOURCE, or else

# several APIs are not declared. Since this is also needed in some

# cases for HP-UX, we define it globally.

AC_DEFINE([_XOPEN_SOURCE_EXTENDED], [1],

[Define to activate Unix95-and-earlier features])

AC_DEFINE([_POSIX_C_SOURCE], [200809L],

[Define to activate features from IEEE Stds 1003.1-2008])

fi

# On HP-UX mbstate_t requires _INCLUDE__STDC_A1_SOURCE

case $ac_sys_system in

hp*|HP*)

define_stdc_a1=yes;;

*)

define_stdc_a1=no;;

esac

if test $define_stdc_a1 = yes

then

AC_DEFINE([_INCLUDE__STDC_A1_SOURCE], [1],

[Define to include mbstate_t for mbrtowc])

fi

# Record the configure-time value of MACOSX_DEPLOYMENT_TARGET,

# it may influence the way we can build extensions, so distutils

# needs to check it

AC_SUBST([CONFIGURE_MACOSX_DEPLOYMENT_TARGET])

AC_SUBST([EXPORT_MACOSX_DEPLOYMENT_TARGET])

CONFIGURE_MACOSX_DEPLOYMENT_TARGET=

EXPORT_MACOSX_DEPLOYMENT_TARGET='#'

# checks for alternative programs

# compiler flags are generated in two sets, BASECFLAGS and OPT. OPT is just

# for debug/optimization stuff. BASECFLAGS is for flags that are required

# just to get things to compile and link. Users are free to override OPT

# when running configure or make. The build should not break if they do.

# BASECFLAGS should generally not be messed with, however.

# If the user switches compilers, we can't believe the cache

if test ! -z "$ac_cv_prog_CC" -a ! -z "$CC" -a "$CC" != "$ac_cv_prog_CC"

then

AC_MSG_ERROR([cached CC is different -- throw away $cache_file

(it is also a good idea to do 'make clean' before compiling)])

fi

# Don't let AC_PROG_CC set the default CFLAGS. It normally sets -g -O2

# when the compiler supports them, but we don't always want -O2, and

# we set -g later.

if test -z "$CFLAGS"; then

CFLAGS=

fi

dnl Emscripten SDK and WASI SDK default to wasm32.

dnl On Emscripten use MEMORY64 setting to build target wasm64-emscripten.

dnl for wasm64.

AS_CASE([$host],

[wasm64-*-emscripten], [

AS_VAR_APPEND([CFLAGS], [" -sMEMORY64=1"])

AS_VAR_APPEND([LDFLAGS], [" -sMEMORY64=1"])

],

)

if test "$ac_sys_system" = "Darwin"

then

dnl look for SDKROOT

AC_CHECK_PROG([HAS_XCRUN], [xcrun], [yes], [missing])

AC_MSG_CHECKING([macOS SDKROOT])

if test -z "$SDKROOT"; then

dnl SDKROOT not set

if test "$HAS_XCRUN" = "yes"; then

dnl detect with Xcode

SDKROOT=$(xcrun --show-sdk-path)

else

dnl default to root

SDKROOT="/"

fi

fi

AC_MSG_RESULT([$SDKROOT])

# Compiler selection on MacOSX is more complicated than

# AC_PROG_CC can handle, see Mac/README for more

# information

if test -z "${CC}"

then

found_gcc=

found_clang=

as_save_IFS=$IFS; IFS=:

for as_dir in $PATH

do

IFS=$as_save_IFS

if test -x "${as_dir}/gcc"; then

if test -z "${found_gcc}"; then

found_gcc="${as_dir}/gcc"

fi

fi

if test -x "${as_dir}/clang"; then

if test -z "${found_clang}"; then

found_clang="${as_dir}/clang"

fi

fi

done

IFS=$as_save_IFS

if test -n "$found_gcc" -a -n "$found_clang"

then

if test -n "`"$found_gcc" --version | grep llvm-gcc`"

then

AC_MSG_NOTICE([Detected llvm-gcc, falling back to clang])

CC="$found_clang"

CXX="$found_clang++"

fi

elif test -z "$found_gcc" -a -n "$found_clang"

then

AC_MSG_NOTICE([No GCC found, use CLANG])

CC="$found_clang"

CXX="$found_clang++"

elif test -z "$found_gcc" -a -z "$found_clang"

then

found_clang=`/usr/bin/xcrun -find clang 2>/dev/null`

if test -n "${found_clang}"

then

AC_MSG_NOTICE([Using clang from Xcode.app])

CC="${found_clang}"

CXX="`/usr/bin/xcrun -find clang++`"

# else: use default behaviour

fi

fi

fi

fi

AC_PROG_CC

AC_PROG_CPP

AC_PROG_GREP

AC_PROG_SED

AC_PROG_EGREP

dnl detect compiler name

dnl check for xlc before clang, newer xlc's can use clang as frontend.

dnl check for GCC last, other compilers set __GNUC__, too.

dnl msvc is listed for completeness.

AC_CACHE_CHECK([for CC compiler name], [ac_cv_cc_name], [

cat > conftest.c <<EOF

#if defined(__INTEL_COMPILER) || defined(__ICC)

icc

#elif defined(__ibmxl__) || defined(__xlc__) || defined(__xlC__)

xlc

#elif defined(_MSC_VER)

msvc

#elif defined(__clang__)

clang

#elif defined(__GNUC__)

gcc

#else

# error unknown compiler

#endif

EOF

if $CPP $CPPFLAGS conftest.c >conftest.out 2>/dev/null; then

ac_cv_cc_name=`grep -v '^#' conftest.out | grep -v '^ *$' | tr -d ' '`

else

ac_cv_cc_name="unknown"

fi

rm -f conftest.c conftest.out

])

# checks for UNIX variants that set C preprocessor variables

# may set _GNU_SOURCE, __EXTENSIONS__, _POSIX_PTHREAD_SEMANTICS,

# _POSIX_SOURCE, _POSIX_1_SOURCE, and more

AC_USE_SYSTEM_EXTENSIONS

AC_SUBST([CXX])

preset_cxx="$CXX"

if test -z "$CXX"

then

case "$CC" in

gcc) AC_PATH_TOOL([CXX], [g++], [g++], [notfound]) ;;

cc) AC_PATH_TOOL([CXX], [c++], [c++], [notfound]) ;;

clang|*/clang) AC_PATH_TOOL([CXX], [clang++], [clang++], [notfound]) ;;

icc|*/icc) AC_PATH_TOOL([CXX], [icpc], [icpc], [notfound]) ;;

esac

if test "$CXX" = "notfound"

then

CXX=""

fi

fi

if test -z "$CXX"

then

AC_CHECK_TOOLS([CXX], [$CCC c++ g++ gcc CC cxx cc++ cl], [notfound])

if test "$CXX" = "notfound"

then

CXX=""

fi

fi

if test "$preset_cxx" != "$CXX"

then

AC_MSG_NOTICE([

By default, distutils will build C++ extension modules with "$CXX".

If this is not intended, then set CXX on the configure command line.

])

fi

AC_MSG_CHECKING([for the platform triplet based on compiler characteristics])

if $CPP $CPPFLAGS $srcdir/Misc/platform_triplet.c >conftest.out 2>/dev/null; then

PLATFORM_TRIPLET=`grep '^PLATFORM_TRIPLET=' conftest.out | tr -d ' '`

PLATFORM_TRIPLET="${PLATFORM_TRIPLET@%:@PLATFORM_TRIPLET=}"

AC_MSG_RESULT([$PLATFORM_TRIPLET])

else

AC_MSG_RESULT([none])

fi

rm -f conftest.out

dnl On some platforms, using a true "triplet" for MULTIARCH would be redundant.

dnl For example, `arm64-apple-darwin` is redundant, because there isn't a

dnl non-Apple Darwin. Including the CPU architecture can also be potentially

dnl redundant - on macOS, for example, it's possible to do a single compile

dnl pass that includes multiple architectures, so it would be misleading for

dnl MULTIARCH (and thus the sysconfigdata module name) to include a single CPU

dnl architecture. PLATFORM_TRIPLET will be a pair or single value for these

dnl platforms.

AC_MSG_CHECKING([for multiarch])

AS_CASE([$ac_sys_system],

[Darwin*], [MULTIARCH=""],

[FreeBSD*], [MULTIARCH=""],

[MULTIARCH=$($CC --print-multiarch 2>/dev/null)]

)

AC_SUBST([MULTIARCH])

if test x$PLATFORM_TRIPLET != x && test x$MULTIARCH != x; then

if test x$PLATFORM_TRIPLET != x$MULTIARCH; then

AC_MSG_ERROR([internal configure error for the platform triplet, please file a bug report])

fi

elif test x$PLATFORM_TRIPLET != x && test x$MULTIARCH = x; then

MULTIARCH=$PLATFORM_TRIPLET

fi

AC_SUBST([PLATFORM_TRIPLET])

AC_MSG_RESULT([$MULTIARCH])

dnl Even if we *do* include the CPU architecture in the MULTIARCH value, some

dnl platforms don't need the CPU architecture in the SOABI tag. These platforms

dnl will have multiple sysconfig modules (one for each CPU architecture), but

dnl use a single "fat" binary at runtime. SOABI_PLATFORM is the component of

dnl the PLATFORM_TRIPLET that will be used in binary module extensions.

AS_CASE([$ac_sys_system],

[SOABI_PLATFORM=$PLATFORM_TRIPLET]

)

if test x$MULTIARCH != x; then

MULTIARCH_CPPFLAGS="-DMULTIARCH=\\\"$MULTIARCH\\\""

fi

AC_SUBST([MULTIARCH_CPPFLAGS])

dnl Support tiers according to https://peps.python.org/pep-0011/

dnl