FM / tools

/usr/share/boost-build/src/tools

Name	Size	Mode	Actions
doxygen/	-	0755	rm
features/	-	0755	rm
generators/	-	0755	rm
types/	-	0755	rm
xsltproc/	-	0755	rm
acc.jam	4800	0644	edit dl rm
asciidoctor.jam	6480	0644	edit dl rm
auto-index.jam	8324	0644	edit dl rm
bison.jam	589	0644	edit dl rm
boostbook-config.jam	389	0644	edit dl rm
boostbook.jam	24056	0644	edit dl rm
borland.jam	9992	0644	edit dl rm
builtin.jam	3037	0644	edit dl rm
bzip2.jam	8066	0644	edit dl rm
cast.jam	3237	0644	edit dl rm
clang-darwin.jam	6713	0644	edit dl rm
clang-linux.jam	9984	0644	edit dl rm
clang-vxworks.jam	4026	0644	edit dl rm
clang-win.jam	6094	0644	edit dl rm
clang.jam	2310	0644	edit dl rm
common.jam	31679	0644	edit dl rm
como-linux.jam	3528	0644	edit dl rm
como-win.jam	4237	0644	edit dl rm
como.jam	2063	0644	edit dl rm
convert.jam	1987	0644	edit dl rm
cray.jam	41128	0644	edit dl rm
cw-config.jam	1283	0644	edit dl rm
cw.jam	9549	0644	edit dl rm
cygwin.jam	403	0644	edit dl rm
darwin.jam	22165	0644	edit dl rm
diab.jam	4307	0644	edit dl rm
dmc.jam	6094	0644	edit dl rm
docutils.jam	3444	0644	edit dl rm
doxproc.py	36621	0644	edit dl rm
doxygen-config.jam	388	0644	edit dl rm
doxygen.jam	24745	0644	edit dl rm
embarcadero.jam	21487	0644	edit dl rm
emscripten.jam	3779	0644	edit dl rm
flags.jam	4570	0644	edit dl rm
fop.jam	1693	0644	edit dl rm
fortran.jam	1989	0644	edit dl rm
gcc.jam	55288	0644	edit dl rm
generate.jam	3339	0644	edit dl rm
gettext.jam	7663	0644	edit dl rm
gfortran.jam	1008	0644	edit dl rm
hpfortran.jam	902	0644	edit dl rm
hp_cxx.jam	8089	0644	edit dl rm
ifort.jam	1495	0644	edit dl rm
intel-darwin.jam	9785	0644	edit dl rm
intel-linux.jam	9193	0644	edit dl rm
intel-vxworks.jam	7085	0644	edit dl rm
intel-win.jam	16396	0644	edit dl rm
intel.jam	2626	0644	edit dl rm
lex.jam	559	0644	edit dl rm
libjpeg.jam	7362	0644	edit dl rm
libpng.jam	7104	0644	edit dl rm
libtiff.jam	7208	0644	edit dl rm
link.jam	15021	0644	edit dl rm
lzma.jam	3277	0644	edit dl rm
make.jam	2266	0644	edit dl rm
mc.jam	1311	0644	edit dl rm
message.jam	1667	0644	edit dl rm
midl.jam	5367	0644	edit dl rm
mipspro.jam	5291	0644	edit dl rm
mpi.jam	21826	0644	edit dl rm
msvc-config.jam	393	0644	edit dl rm
msvc.jam	84672	0644	edit dl rm
notfile.jam	1654	0644	edit dl rm
openssl.jam	3613	0644	edit dl rm
package.jam	9281	0644	edit dl rm
pathscale.jam	6629	0644	edit dl rm
pch.jam	2719	0644	edit dl rm
pgi.jam	4879	0644	edit dl rm
pkg-config.jam	13443	0644	edit dl rm
python-config.jam	836	0644	edit dl rm
python.jam	43679	0644	edit dl rm
qcc.jam	10836	0644	edit dl rm
qt.jam	530	0644	edit dl rm
qt3.jam	6810	0644	edit dl rm
qt4.jam	23974	0644	edit dl rm
qt5.jam	26517	0644	edit dl rm
quickbook-config.jam	1266	0644	edit dl rm
quickbook.jam	13277	0644	edit dl rm
rc.jam	5364	0644	edit dl rm
sass.jam	5702	0644	edit dl rm
saxonhe.jam	1329	0644	edit dl rm
stage.jam	28513	0644	edit dl rm
stlport.jam	11880	0644	edit dl rm
sun.jam	8054	0644	edit dl rm
symlink.jam	4351	0644	edit dl rm
testing-aux.jam	10238	0644	edit dl rm
testing.jam	27889	0644	edit dl rm
unix.jam	5847	0644	edit dl rm
vacpp.jam	5725	0644	edit dl rm
vmsdecc.jam	20185	0644	edit dl rm
whale.jam	3253	0644	edit dl rm
xlcpp.jam	6121	0644	edit dl rm
xlf.jam	900	0644	edit dl rm
xsltproc-config.jam	838	0644	edit dl rm
xsltproc.jam	5603	0644	edit dl rm
zlib.jam	6976	0644	edit dl rm
zstd.jam	2446	0644	edit dl rm

Edit: /usr/share/boost-build/src/tools/python.jam (43679B)

# Copyright 2004 Vladimir Prus.
# Distributed under the Boost Software License, Version 1.0. (See
# accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)

# Support for Python and the the Boost.Python library.
#
# This module defines
#
# - a project 'python' with a target 'python' in it, that corresponds to the
#   python library
#
# - a main target rule 'python-extension' which can be used to build a python
#   extension.
#
# Extensions that use Boost.Python must explicitly link to it.

import type ;
import testing ;
import generators ;
import project ;
import errors ;
import targets ;
import "class" : new ;
import os ;
import common ;
import toolset ;
import regex ;
import numbers ;
import string ;
import property ;
import sequence ;
import path ;
import feature ;
import set ;
import builtin ;
import property-set ;

# Make this module a project.
project.initialize $(__name__) ;
project python ;

# Save the project so that if 'init' is called several times we define new
# targets in the python project, not in whatever project we were called by.
.project = [ project.current ] ;

# Dynamic linker lib. Necessary to specify it explicitly on some platforms.
lib dl ;
# This contains 'openpty' function need by python. Again, on some system need to
# pass this to linker explicitly.
lib util ;
# Python uses pthread symbols.
lib pthread :
    : <target-os>linux:<link>shared
    ;

# Extra library needed by phtread on some platforms.
lib rt ;

# The pythonpath feature specifies additional elements for the PYTHONPATH
# environment variable, set by run-pyd. For example, pythonpath can be used to
# access Python modules that are part of the product being built, but are not
# installed in the development system's default paths.
feature.feature pythonpath : : free optional path ;

# The best configured version of Python 2 and 3.
py2-version = ;
py3-version = ;

# Initializes the Python toolset. Note that all parameters are optional.
#
# - version -- the version of Python to use. Should be in Major.Minor format,
#   for example 2.3.  Do not include the subminor version.
#
# - cmd-or-prefix: Preferably, a command that invokes a Python interpreter.
#   Alternatively, the installation prefix for Python libraries and includes. If
#   empty, will be guessed from the version, the platform's installation
#   patterns, and the python executables that can be found in PATH.
#
# - includes: the include path to Python headers. If empty, will be guessed.
#
# - libraries: the path to Python library binaries. If empty, will be guessed.
#   On MacOS/Darwin, you can also pass the path of the Python framework.
#
# - condition: if specified, should be a set of properties that are matched
#   against the build configuration when B2 selects a Python
#   configuration to use.
#
# - extension-suffix: A string to append to the name of extension modules before
#   the true filename extension.  Ordinarily we would just compute this based on
#   the value of the <python-debugging> feature. However ubuntu's python-dbg
#   package uses the windows convention of appending _d to debug-build extension
#   modules. We have no way of detecting ubuntu, or of probing python for the
#   "_d" requirement, and if you configure and build python using
#   --with-pydebug, you'll be using the standard *nix convention. Defaults to ""
#   (or "_d" when targeting windows and <python-debugging> is set).
#
# Example usage:
#
#   using python : 2.3 ;
#   using python : 2.3 : /usr/local/bin/python ;
#
rule init ( version ? : cmd-or-prefix ? : includes * : libraries ?
    : condition * : extension-suffix ? )
{
    project.push-current $(.project) ;

debug-message Configuring python... ;
    for local v in version cmd-or-prefix includes libraries condition
    {
        if $($(v))
        {
            debug-message "  user-specified $(v):" \"$($(v))\" ;
        }
    }

configure $(version) : $(cmd-or-prefix) : $(includes) : $(libraries) : $(condition) : $(extension-suffix) ;

project.pop-current ;
}

# A simpler version of SHELL that grabs stderr as well as stdout, but returns
# nothing if there was an error.
#
local rule shell-cmd ( cmd )
{
    debug-message running command '$(cmd)" 2>&1"' ;
    x = [ SHELL $(cmd)" 2>&1" : exit-status ] ;
    if $(x[2]) = 0
    {
        return $(x[1]) ;
    }
    else
    {
        return ;
    }
}

# Try to identify Cygwin symlinks. Invoking such a file directly as an NT
# executable from a native Windows build of bjam would be fatal to the bjam
# process. One /can/ invoke them through sh.exe or bash.exe, if you can prove
# that those are not also symlinks. ;-)
#
# If a symlink is found returns non-empty; we try to extract the target of the
# symlink from the file and return that.
#
# Note: 1. only works on NT  2. path is a native path.
local rule is-cygwin-symlink ( path )
{
    local is-symlink = ;

# Look for a file with the given path having the S attribute set, as cygwin
    # symlinks do. /-C means "do not use thousands separators in file sizes."
    local dir-listing = [ shell-cmd "DIR /-C /A:S \""$(path)"\"" ] ;

if $(dir-listing)
    {
        # Escape any special regex characters in the base part of the path.
        local base-pat = [ regex.escape $(path:D=) : "].[()*+?|\\$^" : \\ ] ;

# Extract the file's size from the directory listing.
        local size-of-system-file = [ MATCH "([0-9]+) "$(base-pat) : $(dir-listing) : 1 ] ;

# If the file has a reasonably small size, look for the special symlink
        # identification text.
        if $(size-of-system-file) && [ numbers.less $(size-of-system-file) 1000 ]
        {
            local link = [ SHELL "FIND /OFF \"!<symlink>\" \""$(path)"\" 2>&1" ] ;
            if $(link[2]) != 0
            {
                local nl = "

" ;
                is-symlink = [ MATCH ".*!<symlink>([^"$(nl)"]*)" : $(link[1]) : 1 ] ;
                if $(is-symlink)
                {
                    is-symlink = [ *nix-path-to-native $(is-symlink) ] ;
                    is-symlink = $(is-symlink:R=$(path:D)) ;
                }

}
        }
    }
    return $(is-symlink) ;
}

# Append ext to each member of names that does not contain '.'.
#
local rule default-extension ( names * : ext * )
{
    local result ;
    for local n in $(names)
    {
        switch $(n)
        {
            case *.* : result += $(n) ;
            case * : result += $(n)$(ext) ;
        }
    }
    return $(result) ;
}

# Tries to determine whether invoking "cmd" would actually attempt to launch a
# cygwin symlink.
#
# Note: only works on NT.
#
local rule invokes-cygwin-symlink ( cmd )
{
    local dirs = $(cmd:D) ;
    if ! $(dirs)
    {
        dirs = . [ os.executable-path ] ;
    }
    local base = [ default-extension $(cmd:D=) : .exe .cmd .bat ] ;
    local paths = [ GLOB $(dirs) : $(base) ] ;
    if $(paths)
    {
        # Make sure we have not run into a Cygwin symlink. Invoking such a file
        # as an NT executable would be fatal for the bjam process.
        return [ is-cygwin-symlink $(paths[1]) ] ;
    }
}

local rule debug-message ( message * )
{
    if --debug-configuration in [ modules.peek : ARGV ]
    {
        ECHO "notice:" "[python-cfg]" $(message) ;
    }
}

# Like W32_GETREG, except prepend HKEY_CURRENT_USER\SOFTWARE and
# HKEY_LOCAL_MACHINE\SOFTWARE to the first argument, returning the first result
# found. Also accounts for the fact that on 64-bit machines, 32-bit software has
# its own area, under SOFTWARE\Wow6432node.
#
local rule software-registry-value ( path : data ? )
{
    local result ;
    for local root in HKEY_CURRENT_USER HKEY_LOCAL_MACHINE
    {
        for local x64elt in "" Wow6432node\\ # Account for 64-bit windows
        {
            if ! $(result)
            {
                result = [ W32_GETREG $(root)\\SOFTWARE\\$(x64elt)$(path) : $(data) ] ;
            }
        }

}
    return $(result) ;
}

.windows-drive-letter-re = "^([A-Za-z]):[\\/](.*)" ;
.cygwin-drive-letter-re = "^/cygdrive/([a-z])/(.*)" ;

.working-directory = [ PWD ] ;
.working-drive-letter = [ SUBST $(.working-directory) $(.windows-drive-letter-re) $1 ] ;
.working-drive-letter ?= [ SUBST $(.working-directory) $(.cygwin-drive-letter-re) $1 ] ;

local rule windows-to-cygwin-path ( path )
{
    # If path is rooted with a drive letter, rewrite it using the /cygdrive
    # mountpoint.
    local p = [ SUBST $(path:T) $(.windows-drive-letter-re) /cygdrive/$1/$2 ] ;

# Else if path is rooted without a drive letter, use the working directory.
    p ?= [ SUBST $(path:T) ^/(.*) /cygdrive/$(.working-drive-letter:L)/$2 ] ;

# Else return the path unchanged.
    return $(p:E=$(path:T)) ;
}

# :W only works in Cygwin builds of bjam.  This one works on NT builds as well.
#
local rule cygwin-to-windows-path ( path )
{
    path = $(path:R="") ; # strip any trailing slash

local drive-letter = [ SUBST $(path) $(.cygwin-drive-letter-re) "$1:/$2" ] ;
    if $(drive-letter)
    {
        path = $(drive-letter) ;
    }
    else if $(path:R=/x) = $(path) # already rooted?
    {
        # Look for a cygwin mount that includes each head sequence in $(path).
        local head = $(path) ;
        local tail = "" ;

while $(head)
        {
            local root = [ software-registry-value
                "Cygnus Solutions\\Cygwin\\mounts v2\\"$(head) : native ] ;

if $(root)
            {
                path = $(tail:R=$(root)) ;
                head = ;
            }
            tail = $(tail:R=$(head:D=)) ;

if $(head) = /
            {
                head = ;
            }
            else
            {
                head = $(head:D) ;
            }
        }
    }
    return [ regex.replace $(path:R="") / \\ ] ;
}

# Convert a *nix path to native.
#
local rule *nix-path-to-native ( path )
{
    if [ os.name ] = NT
    {
        path = [ cygwin-to-windows-path $(path) ] ;
    }
    return $(path) ;
}

# Convert an NT path to native.
#
local rule windows-path-to-native ( path )
{
    if [ os.name ] = NT
    {
        return $(path) ;
    }
    else
    {
        return [ windows-to-cygwin-path $(path) ] ;
    }
}

# Return nonempty if path looks like a windows path, i.e. it starts with a drive
# letter or contains backslashes.
#
local rule guess-windows-path ( path )
{
    return [ SUBST $(path) "($(.windows-drive-letter-re)|.*([\\]).*)" $1 ] ;
}

local rule path-to-native ( paths * )
{
    local result ;

for local p in $(paths)
    {
        if [ guess-windows-path $(p) ]
        {
            result += [ windows-path-to-native $(p) ] ;
        }
        else
        {
            result += [ *nix-path-to-native $(p:T) ] ;
        }
    }
    return $(result) ;
}

# Validate the version string and extract the major/minor part we care about.
#
local rule split-version ( version )
{
    local major-minor = [ MATCH "^([0-9]+)\.([0-9]+)(.*)$" : $(version) : 1 2 3 ] ;
    if ! $(major-minor[2]) || $(major-minor[3])
    {
        ECHO "Warning: \"using python\" expects a two part (major, minor) version number; got" $(version) instead ;

# Add a zero to account for the missing digit if necessary.
        major-minor += 0 ;
    }

return $(major-minor[1]) $(major-minor[2]) ;
}

# Build a list of versions from 3.4 down to 1.5. Because bjam can not enumerate
# registry sub-keys, we have no way of finding a version with a 2-digit minor
# version, e.g. 2.10 -- let us hope that never happens.
#
.version-countdown = ;
for local v in [ numbers.range 15 34 ]
{
    .version-countdown = [ SUBST $(v) (.)(.*) $1.$2 ] $(.version-countdown) ;
}

local rule windows-installed-pythons ( version ? )
{
    version ?= $(.version-countdown) ;
    local interpreters ;

for local v in $(version)
    {
        local install-path = [
          software-registry-value "Python\\PythonCore\\"$(v)"\\InstallPath" ] ;

if $(install-path)
        {
            install-path = [ windows-path-to-native $(install-path) ] ;
            debug-message Registry indicates Python $(v) installed at \"$(install-path)\" ;
        }

interpreters += $(:E=python:R=$(install-path)) ;
    }
    return $(interpreters) ;
}

local rule darwin-installed-pythons ( version ? )
{
    version ?= $(.version-countdown) ;

local prefix
      = [ GLOB /System/Library/Frameworks /Library/Frameworks
          : Python.framework ] ;

return $(prefix)/Versions/$(version)/bin/python ;
}

# Assume "python-cmd" invokes a python interpreter and invoke it to extract all
# the information we care about from its "sys" module. Returns void if
# unsuccessful.
#
local rule probe ( python-cmd )
{
    # Avoid invoking a Cygwin symlink on NT.
    local skip-symlink ;
    if [ os.name ] = NT
    {
        skip-symlink = [ invokes-cygwin-symlink $(python-cmd) ] ;
    }

if $(skip-symlink)
    {
        debug-message -------------------------------------------------------------------- ;
        debug-message \"$(python-cmd)\" would attempt to invoke a Cygwin symlink, ;
        debug-message causing a bjam built for Windows to hang. ;
        debug-message ;
        debug-message If you intend to target a Cygwin build of Python, please ;
        debug-message replace the path to the link with the path to a real executable ;
        debug-message "(guessing:" \"$(skip-symlink)\") "in" your 'using python' line ;
        debug-message "in" user-config.jam or site-config.jam. Do not forget to escape ;
        debug-message backslashes ;
        debug-message -------------------------------------------------------------------- ;
    }
    else
    {
        # Prepare a List of Python format strings and expressions that can be
        # used to print the constants we want from the sys module.

# We do not really want sys.version since that is a complicated string,
        # so get the information from sys.version_info instead.
        local format = "version=%d.%d" ;
        local exprs = "version_info[0]" "version_info[1]" ;

for local s in $(sys-elements[2-])
        {
            format += $(s)=%s ;
            exprs += $(s) ;
        }

# Invoke Python and ask it for all those values.
        local full-cmd =
            $(python-cmd)" -c \"from sys import *; print('"$(format:J=\\n)"' % ("$(exprs:J=,)"))\"" ;

local output = [ shell-cmd $(full-cmd) ] ;
        if $(output)
        {
            # Parse the output to get all the results.
            local nl = "

" ;
            for s in $(sys-elements)
            {
                # These variables are expected to be declared local in the
                # caller, so Jam's dynamic scoping will set their values there.
                sys.$(s) = [ SUBST $(output) "\\<$(s)=([^$(nl)]+)" $1 ] ;
            }
        }
        return $(output) ;
    }
}

# Make sure the "libraries" and "includes" variables (in an enclosing scope)
# have a value based on the information given.
#
local rule compute-default-paths ( target-os : version ? : prefix ? :
    exec-prefix ? )
{
    exec-prefix ?= $(prefix) ;

if $(target-os) = windows
    {
        # The exec_prefix is where you're supposed to look for machine-specific
        # libraries.
        local default-library-path = $(exec-prefix)\\libs ;
        local default-include-path = $(:E=Include:R=$(prefix)) ;

# If the interpreter was found in a directory called "PCBuild" or
        # "PCBuild8," assume we're looking at a Python built from the source
        # distro, and go up one additional level to the default root. Otherwise,
        # the default root is the directory where the interpreter was found.

# We ask Python itself what the executable path is in case of
        # intermediate symlinks or shell scripts.
        local executable-dir = $(sys.executable:D) ;

if [ MATCH ^(PCBuild) : $(executable-dir:D=) ]
        {
            debug-message "This Python appears to reside in a source distribution;" ;
            debug-message "prepending \""$(executable-dir)"\" to default library search path" ;

default-library-path = $(executable-dir) $(default-library-path) ;

default-include-path = $(:E=PC:R=$(executable-dir:D)) $(default-include-path) ;

debug-message "and \""$(default-include-path[1])"\" to default #include path" ;
        }

libraries ?= $(default-library-path) ;
        includes ?= $(default-include-path) ;
    }
    else
    {
        python_includes = [ shell-cmd "printf `python$(version) -c 'import distutils.sysconfig; print(distutils.sysconfig.get_python_inc());'`" ] ;
        python_platincludes = [ shell-cmd "printf `python$(version) -c 'import distutils.sysconfig; print(distutils.sysconfig.get_python_inc(plat_specific=1));'`" ] ;
        includes ?= $(python_includes) $(python_platincludes) ;

local lib = $(exec-prefix)/lib ;
        libraries ?= $(lib)/python$(version)/config $(lib) ;
    }
}

# The version of the python interpreter to use.
feature.feature python : : propagated symmetric ;
feature.feature python.interpreter : : free ;

toolset.flags python.capture-output PYTHON : <python.interpreter> ;

#
# Support for Python configured --with-pydebug
#
feature.feature python-debugging : off on : propagated ;
variant debug-python : debug : <python-debugging>on ;

# Return a list of candidate commands to try when looking for a Python
# interpreter. prefix is expected to be a native path.
#
local rule candidate-interpreters ( version ? : prefix ? : target-os )
{
    local bin-path = bin ;
    if $(target-os) = windows
    {
        # On Windows, look in the root directory itself and, to work with the
        # result of a build-from-source, the PCBuild directory.
        bin-path = PCBuild8 PCBuild "" ;
    }

bin-path = $(bin-path:R=$(prefix)) ;

if $(target-os) in windows darwin
    {
        return                                            # Search:
            $(:E=python:R=$(bin-path))                    #   Relative to the prefix, if any
            python                                        #   In the PATH
            [ $(target-os)-installed-pythons $(version) ] #   Standard install locations
        ;
    }
    else
    {
        # Search relative to the prefix, or if none supplied, in PATH.
        local unversioned = $(:E=python:R=$(bin-path:E=)) ;

# If a version was specified, look for a python with that specific
        # version appended before looking for one called, simply, "python"
        return $(unversioned)$(version) $(unversioned) ;
    }
}

# Compute system library dependencies for targets linking with static Python
# libraries.
#
# On many systems, Python uses libraries such as pthreads or libdl. Since static
# libraries carry no library dependency information of their own that the linker
# can extract, these extra dependencies have to be given explicitly on the link
# line of the client.  The information about these dependencies is packaged into
# the "python" target below.
#
# Even where Python itself uses pthreads, it never allows extension modules to
# be entered concurrently (unless they explicitly give up the interpreter lock).
# Therefore, extension modules do not need the efficiency overhead of threadsafe
# code as produced by <threading>multi, and we handle libpthread along with
# other libraries here. Note: this optimization is based on an assumption that
# the compiler generates link-compatible code in both the single- and
# multi-threaded cases, and that system libraries do not change their ABIs
# either.
#
# Returns a list of usage-requirements that link to the necessary system
# libraries.
#
local rule system-library-dependencies ( target-os )
{
    switch $(target-os)
    {
        case s[uo][nl]* : # solaris, sun, sunos
            # Add a librt dependency for the gcc toolset on SunOS (the sun
            # toolset adds -lrt unconditionally). While this appears to
            # duplicate the logic already in gcc.jam, it does not as long as
            # we are not forcing <threading>multi.

# On solaris 10, distutils.sysconfig.get_config_var('LIBS') yields
            # '-lresolv -lsocket -lnsl -lrt -ldl'. However, that does not seem
            # to be the right list for extension modules. For example, on my
            # installation, adding -ldl causes at least one test to fail because
            # the library can not be found and removing it causes no failures.

# Apparently, though, we need to add -lrt for gcc.
            return <toolset>gcc:<library>rt ;

case osf : return  <library>pthread <toolset>gcc:<library>rt ;

case qnx* : return ;
        case darwin : return ;
        case windows : return ;
        case haiku : return ;

case hpux : return  <library>rt ;
        case *bsd : return  <library>pthread <toolset>gcc:<library>util ;

case aix : return  <library>pthread <library>dl ;

case * : return  <library>pthread <library>dl
            <toolset>gcc:<library>util <toolset-intel:platform>linux:<library>util ;
    }
}

# Define a version suffix for libraries depending on Python.
# For example, Boost.Python built for Python 2.7 uses the suffix "27"
rule version-suffix ( version )
{
    local major-minor = [ split-version $(version) ] ;
    local suffix = $(major-minor:J="") ;
    return $(suffix) ;
}

# Declare a target to represent Python's library.
#
local rule declare-libpython-target ( version ? : requirements * )
{
    # Compute the representation of Python version in the name of Python's
    # library file.
    local lib-version = $(version) ;
    if <target-os>windows in $(requirements)
    {
        local major-minor = [ split-version $(version) ] ;
        lib-version = $(major-minor:J="") ;
        if <python-debugging>on in $(requirements)
        {
            lib-version = $(lib-version)_d ;
        }
    }

if ! $(lib-version)
    {
        ECHO *** "warning:" could not determine Python version, which will ;
        ECHO *** "warning:" probably prevent us from linking with the python ;
        ECHO *** "warning:" library.  Consider explicitly passing the version ;
        ECHO *** "warning:" to 'using python'. ;
    }

# Declare it.
    lib python.lib : : <name>python$(lib-version) $(requirements) ;
}

# Implementation of init.
local rule configure ( version ? : cmd-or-prefix ? : includes * : libraries ? :
    condition * : extension-suffix ? )
{
    local prefix ;
    local exec-prefix ;
    local cmds-to-try ;
    local interpreter-cmd ;

local target-os = [ feature.get-values target-os : $(condition) ] ;
    target-os ?= [ feature.defaults target-os ] ;
    target-os = $(target-os:G=) ;

local cmds-to-try ;

if ! $(cmd-or-prefix) || [ GLOB $(cmd-or-prefix) : * ]
    {
        # If the user did not pass a command, whatever we got was a prefix.
        prefix = $(cmd-or-prefix) ;
        cmds-to-try = [ candidate-interpreters $(version) : $(prefix) : $(target-os) ] ;
    }
    else
    {
        # Work with the command the user gave us.
        cmds-to-try = $(cmd-or-prefix) ;

# On Windows, do not nail down the interpreter command just yet in case
        # the user specified something that turns out to be a cygwin symlink,
        # which could bring down bjam if we invoke it.
        if $(target-os) != windows
        {
            interpreter-cmd = $(cmd-or-prefix) ;
        }
    }

# Values to use in case we can not really find anything in the system.
    local fallback-cmd = $(cmds-to-try[1]) ;
    local fallback-version ;

# Anything left to find or check?
    if ! ( $(interpreter-cmd) && $(version) && $(includes) && $(libraries) )
    {
        # Values to be extracted from python's sys module. These will be set by
        # the probe rule, above, using Jam's dynamic scoping.
        local sys-elements = version platform prefix exec_prefix executable ;
        local sys.$(sys-elements) ;

# Compute the string Python's sys.platform needs to match. If not
        # targeting Windows or cygwin we will assume only native builds can
        # possibly run, so we will not require a match and we leave sys.platform
        # blank.
        local platform ;
        switch $(target-os)
        {
            case windows : platform = win32 ;
            case cygwin : platform = cygwin ;
        }

while $(cmds-to-try)
        {
            # Pop top command.
            local cmd = $(cmds-to-try[1]) ;
            cmds-to-try = $(cmds-to-try[2-]) ;

debug-message Checking interpreter command \"$(cmd)\"... ;
            if [ probe $(cmd) ]
            {
                fallback-version ?= $(sys.version) ;

# Check for version/platform validity.
                for local x in version platform
                {
                    if $($(x)) && $($(x)) != $(sys.$(x))
                    {
                        debug-message ...$(x) "mismatch (looking for"
                            $($(x)) but found $(sys.$(x))")" ;
                        cmd = ;
                    }
                }

if $(cmd)
                {
                    debug-message ...requested configuration matched! ;

exec-prefix = $(sys.exec_prefix) ;

compute-default-paths $(target-os) : $(sys.version) :
                        $(sys.prefix) : $(sys.exec_prefix) ;

version = $(sys.version) ;
                    interpreter-cmd ?= $(cmd) ;
                    cmds-to-try = ;  # All done.
                }
            }
            else
            {
                debug-message ...does not invoke a working interpreter ;
            }
        }
    }

# Check whether configuration succeeded.
    if ! ( $(includes) && $(libraries) )
    {
        debug-message Python headers and libraries not found. ;
        return ;
    }

.configured = true ;

if ! $(interpreter-cmd)
    {
        fallback-cmd ?= python ;
        debug-message No working Python interpreter found. ;
        if [ os.name ] != NT || ! [ invokes-cygwin-symlink $(fallback-cmd) ]
        {
            interpreter-cmd = $(fallback-cmd) ;
            debug-message falling back to \"$(interpreter-cmd)\" ;
        }
    }

includes = [ path-to-native $(includes) ] ;
    libraries = [ path-to-native $(libraries) ] ;

debug-message "Details of this Python configuration:" ;
    debug-message "  interpreter command:" \"$(interpreter-cmd:E=<empty>)\" ;
    debug-message "  include path:" \"$(includes:E=<empty>)\" ;
    debug-message "  library path:" \"$(libraries:E=<empty>)\" ;
    if $(target-os) = windows
    {
        debug-message "  DLL search path:" \"$(exec-prefix:E=<empty>)\" ;
    }

#
    # Discover the presence of NumPy
    #
    debug-message "Checking for NumPy..." ;
    local full-cmd = "import sys; sys.stderr = sys.stdout; import numpy; print(numpy.get_include())" ;
    local full-cmd = $(interpreter-cmd)" -c \"$(full-cmd)\"" ;
    debug-message "running command '$(full-cmd)'" ;
    local result = [ SHELL $(full-cmd) : strip-eol : exit-status ] ;
    if $(result[2]) = 0
    {
        .numpy = true ;
        .numpy-include = $(result[1]) ;
        debug-message "NumPy enabled" ;
    }
    else
    {
        debug-message "NumPy disabled. Reason:" ;
        debug-message "  $(full-cmd) aborted with " ;
        debug-message "  $(result[1])" ;
    }

#
    # End autoconfiguration sequence.
    #

# Normalize and dissect any version number.
    local major-minor ;
    if $(version)
    {
        major-minor = [ split-version $(version) ] ;
        version = $(major-minor:J=.) ;
    }

local target-requirements = $(condition) ;

# Add the version, if any, to the target requirements.
    if $(version)
    {
        if ! $(version) in [ feature.values python ]
        {
            feature.extend python : $(version) ;
            py$(major-minor[1])-version ?= $(version) ;
            if $(py$(major-minor[1])-version) < $(version)
            {
                py$(major-minor[1])-version = $(version) ;
            }
        }
        target-requirements += <python>$(version:E=default) ;
    }

target-requirements += <target-os>$(target-os) ;

# See if we can find a framework directory on darwin.
    local framework-directory ;
    if $(target-os) = darwin
    {
        # Search upward for the framework directory.
        local framework-directory = $(libraries[-1]) ;
        while $(framework-directory:D=) && $(framework-directory:D=) != Python.framework
        {
            framework-directory = $(framework-directory:D) ;
        }

if $(framework-directory:D=) = Python.framework
        {
            debug-message framework directory is \"$(framework-directory)\" ;
        }
        else
        {
            debug-message "no framework directory found; using library path" ;
            framework-directory = ;
        }
    }

local dll-path = $(libraries) ;

# Make sure that we can find the Python DLL on Windows.
    if ( $(target-os) = windows ) && $(exec-prefix)
    {
        dll-path += $(exec-prefix) ;
    }

#
    # Prepare usage requirements.
    #
    local usage-requirements = [ system-library-dependencies $(target-os) ] ;
    usage-requirements += <include>$(includes) <python.interpreter>$(interpreter-cmd) ;
    if <python-debugging>on in $(condition)
    {
        if $(target-os) = windows
        {
            # In pyconfig.h, Py_DEBUG is set if _DEBUG is set. If we define
            # Py_DEBUG we will get multiple definition warnings.
            usage-requirements += <define>_DEBUG ;
        }
        else
        {
            usage-requirements += <define>Py_DEBUG ;
        }
    }

# In case we added duplicate requirements from what the user specified.
    target-requirements = [ sequence.unique $(target-requirements) ] ;

# Global, but conditional, requirements to give access to the interpreter
    # for general utilities, like other toolsets, that run Python scripts.
    toolset.add-requirements
        "$(target-requirements:J=,):<python.interpreter>$(interpreter-cmd)" ;

#
    # Discover and set extension suffix
    #
    debug-message "Checking for extension suffix..." ;
    local full-cmd = "from __future__ import print_function; import sysconfig; print(sysconfig.get_config_var('SO'))" ;
    local full-cmd = $(interpreter-cmd)" -c \"$(full-cmd)\"" ;
    debug-message "running command '$(full-cmd)'" ;
    local result = [ SHELL $(full-cmd) : strip-eol : exit-status ] ;
    if $(result[2]) = 0
    {
        debug-message "Python extenssion suffix is $(result[1])" ;
        type.set-generated-target-suffix PYTHON_EXTENSION : $(target-requirements) : <$(result[1])> ;
    }
    else
    {
        debug-message "Failed to determine python extension suffix" ;
        debug-message "Falling back to old behaviour" ;
        if $(target-os) = windows && <python-debugging>on in $(condition)
        {
            extension-suffix ?= _d ;
        }
        extension-suffix ?= "" ;

# Register the right suffix for extensions.
        register-extension-suffix $(extension-suffix) : $(target-requirements) ;
    }

# Make sure that the python feature is always considered
    # relevant for any targets that depend on python.  Without
    # this, it would only be considered relevant when there are
    # multiple configurations defined within the same build.
    target-requirements += <relevant>python ;

#
    # Declare the "python" target. This should really be called
    # python_for_embedding.
    #

if $(framework-directory)
    {
        alias python
          :
          : $(target-requirements)
          :
          : $(usage-requirements) <framework>$(framework-directory)
          ;
    }
    else
    {
        declare-libpython-target $(version) : $(target-requirements) ;

# This is an evil hack.  On, Windows, when Python is embedded, nothing
        # seems to set up sys.path to include Python's standard library
        # (http://article.gmane.org/gmane.comp.python.general/544986). The evil
        # here, aside from the workaround necessitated by Python's bug, is that:
        #
        # a. we're guessing the location of the python standard library from the
        #    location of pythonXX.lib
        #
        # b. we're hijacking the <testing.launcher> property to get the
        #    environment variable set up, and the user may want to use it for
        #    something else (e.g. launch the debugger).
        local set-PYTHONPATH ;
        if $(target-os) = windows
        {
            set-PYTHONPATH = [ common.prepend-path-variable-command PYTHONPATH :
                $(libraries:D)/Lib ] ;
        }

alias python
          :
          : $(target-requirements)
          :
            # Why python.lib must be listed here instead of along with the
            # system libs is a mystery, but if we do not do it, on cygwin,
            # -lpythonX.Y never appears in the command line (although it does on
            # linux).
          : $(usage-requirements)
            <testing.launcher>$(set-PYTHONPATH)
              <library-path>$(libraries) <dll-path>$(dll-path) <library>python.lib
          ;
    }

# On *nix, we do not want to link either Boost.Python or Python extensions
    # to libpython, because the Python interpreter itself provides all those
    # symbols. If we linked to libpython, we would get duplicate symbols. So
    # declare two targets -- one for building extensions and another for
    # embedding.
    if $(target-os) in windows cygwin
    {
        alias python_for_extensions : python : $(target-requirements) ;
    }
    else if $(target-os) = darwin {
        alias python_for_extensions
            :
            : $(target-requirements)
            :
            : $(usage-requirements) <linkflags>"-undefined dynamic_lookup"
            ;
    }
    # On AIX we need Python extensions and Boost.Python to import symbols from
    # the Python interpreter. Dynamic libraries opened with dlopen() do not
    # inherit the symbols from the Python interpreter.
    else if $(target-os) = aix
    {
        alias python_for_extensions
            :
            : $(target-requirements)
            :
            : $(usage-requirements) <linkflags>"-Wl,-bI:$(libraries[1])/python.exp"
            ;
    }
    else
    {
        alias python_for_extensions
            :
            : $(target-requirements)
            :
            : $(usage-requirements)
            ;
    }

}

# Conditional rule specification that will prevent building of a target
# if there is no matching python configuration available with the given
# required properties.
rule require-py ( properties * )
{
    local py-ext-target = [ $(.project).find python_for_extensions : no-error ] ;
    if ! $(py-ext-target)
    {
        return <build>no ;
    }
    local property-set = [ property-set.create $(properties) ] ;
    property-set = [ $(property-set).expand ] ;
    local py-ext-alternative = [ $(py-ext-target).select-alternatives $(property-set) ] ;
    if ! $(py-ext-alternative)
    {
        return <build>no ;
    }
}

rule configured ( )
{
     return $(.configured) ;
}

rule numpy ( )
{
     return $(.numpy) ;
}

rule numpy-include ( )
{
     return $(.numpy-include) ;
}

type.register PYTHON_EXTENSION : : SHARED_LIB ;

local rule register-extension-suffix ( root : condition * )
{
    local suffix ;

switch [ feature.get-values target-os : $(condition) ]
    {
        case windows : suffix = pyd ;
        case cygwin : suffix = dll ;
        case hpux :
        {
            if [ feature.get-values python : $(condition) ] in 1.5 1.6 2.0 2.1 2.2 2.3 2.4
            {
                suffix = sl ;
            }
            else
            {
                suffix = so ;
            }
        }
        case * : suffix = so ;
    }

type.set-generated-target-suffix PYTHON_EXTENSION : $(condition) : <$(root).$(suffix)> ;
}

# Unset 'lib' prefix for PYTHON_EXTENSION
type.set-generated-target-prefix PYTHON_EXTENSION : : "" ;

rule python-extension ( name : sources * : requirements * : default-build * :
                        usage-requirements * )
{
    if [ configured ]
    {
        requirements += <use>/python//python_for_extensions ;
    }
    requirements += <suppress-import-lib>true ;

local project = [ project.current ] ;

targets.main-target-alternative
        [ new typed-target $(name) : $(project) : PYTHON_EXTENSION
            : [ targets.main-target-sources $(sources) : $(name) ]
            : [ targets.main-target-requirements $(requirements) : $(project) ]
            : [ targets.main-target-default-build $(default-build) : $(project) ]
        ] ;
}

IMPORT python : python-extension : : python-extension ;

# Support for testing.
type.register PY : py ;
type.register RUN_PYD_OUTPUT ;
type.register RUN_PYD : : TEST ;

class python-test-generator : generator
{
    import set ;

rule __init__ ( * : * )
    {
        generator.__init__ $(1) : $(2) : $(3) : $(4) : $(5) : $(6) : $(7) : $(8) : $(9) ;
        self.composing = true ;
    }

rule run ( project name ? : property-set : sources * : multiple ? )
    {
        local pyversion = [ $(property-set).get <python> ] ;
        local python ;
        local other-pythons ;

for local s in $(sources)
        {
            if [ $(s).type ] = PY
            {
                if ! $(python)
                {
                    # First Python source ends up on command line.
                    python = $(s) ;

}
                else
                {
                    # Other Python sources become dependencies.
                    other-pythons += $(s) ;
                }
            }
        }

local extensions ;
        for local s in $(sources)
        {
            if [ $(s).type ] = PYTHON_EXTENSION
            {
                extensions += $(s) ;
            }
        }

local libs ;
        for local s in $(sources)
        {
            if [ type.is-derived [ $(s).type ] LIB ]
              && ! $(s) in $(extensions)
            {
                libs += $(s) ;
            }
        }

local new-sources ;
        for local s in $(sources)
        {
            if [ type.is-derived [ $(s).type ] CPP ]
            {
                local name = [ utility.basename [ $(s).name ] ] ;
                if $(name) = [ utility.basename [ $(python).name ] ]
                {
                    name = $(name)_ext ;
                }
                local extension = [ generators.construct $(project) $(name) :
                  PYTHON_EXTENSION : $(property-set) : $(s) $(libs) ] ;

# The important part of usage requirements returned from
                # PYTHON_EXTENSION generator are xdll-path properties that will
                # allow us to find the python extension at runtime.
                property-set = [ $(property-set).add $(extension[1]) ] ;

# Ignore usage requirements. We're a top-level generator and
                # nobody is going to use what we generate.
                new-sources += $(extension[2-]) ;
            }
        }

property-set = [ $(property-set).add-raw <dependency>$(other-pythons) ] ;

return [ construct-result $(python) $(extensions) $(new-sources) :
            $(project) $(name) : $(property-set) ] ;
    }
}

generators.register
  [ new python-test-generator python.capture-output : : RUN_PYD_OUTPUT ] ;

generators.register-standard testing.expect-success
  : RUN_PYD_OUTPUT : RUN_PYD ;

# There are two different ways of spelling OS names. One is used for [ os.name ]
# and the other is used for the <host-os> and <target-os> properties. Until that
# is remedied, this sets up a crude mapping from the latter to the former, that
# will work *for the purposes of cygwin/NT cross-builds only*. Could not think
# of a better name than "translate".
#
.translate-os-windows = NT ;
.translate-os-cygwin = CYGWIN ;
local rule translate-os ( src-os )
{
    local x = $(.translate-os-$(src-os)) [ os.name ] ;
    return $(x[1]) ;
}

# Extract the path to a single ".pyd" source. This is used to build the
# PYTHONPATH for running bpl tests.
#
local rule pyd-pythonpath ( source )
{
    return [ on $(source) return $(LOCATE) $(SEARCH) ] ;
}

# The flag settings on testing.capture-output do not apply to python.capture
# output at the moment. Redo this explicitly.
toolset.flags python.capture-output ARGS <testing.arg> ;
toolset.flags python.capture-output INPUT_FILES <testing.input-file> ;

toolset.uses-features python.capture-output :
    <testing.launcher> <testing.execute> <dll-path> <xdll-path> <target-os>
    <pythonpath> ;

rule capture-output ( target : sources * : properties * )
{
    # Setup up a proper DLL search path. Here, $(sources[1]) is a python module
    # and $(sources[2]) is a DLL. Only $(sources[1]) is passed to
    # testing.capture-output, so RUN_PATH variable on $(sources[2]) is not
    # consulted. Move it over explicitly.
    RUN_PATH on $(sources[1]) = [ on $(sources[2-]) return $(RUN_PATH) ] ;

PYTHONPATH  = [ sequence.transform pyd-pythonpath : $(sources[2-]) ] ;
    PYTHONPATH += [ feature.get-values pythonpath : $(properties) ] ;

# After test is run, we remove the Python module, but not the Python script.
    testing.capture-output $(target) : $(sources[1]) : $(properties) ;

# PYTHONPATH is different; it will be interpreted by whichever Python is
    # invoked and so must follow path rules for the target os. The only OSes
    # where we can run python for other OSes currently are NT and CYGWIN so we
    # only need to handle those cases.
    local target-os = [ feature.get-values target-os : $(properties) ] ;
    # Oddly, host-os is not in properties, so grab the default value.
    local host-os = [ feature.defaults host-os ] ;
    host-os = $(host-os:G=) ;
    if $(target-os) != $(host-os) && $(target-os) in windows cygwin && $(host-os) in windows cygwin
    {
        PYTHONPATH = [ sequence.transform $(host-os)-to-$(target-os)-path :
            $(PYTHONPATH) ] ;
    }
    local path-separator = [ os.path-separator [ translate-os $(target-os) ] ] ;
    local set-PYTHONPATH = [ common.variable-setting-command PYTHONPATH :
        $(PYTHONPATH:E=:J=$(path-separator)) ] ;
    LAUNCHER on $(target) = $(set-PYTHONPATH) [ on $(target) return \"$(PYTHON)\" ] ;
}

rule bpl-test ( name : sources * : requirements * )
{
    local s ;
    sources ?= $(name).py $(name).cpp ;
    return [ testing.make-test run-pyd : $(sources) /boost/python//boost_python
        : $(requirements) : $(name) ] ;
}

# The same as bpl-test but additionally require (and link to) boost_numpy.
# Masked whenever NumPy is not enabled.
rule numpy-test ( name : sources * : requirements * )
{
    numpy-include = [ python.numpy-include ] ;
    # yuk !
    if ! $(.numpy) { requirements += <build>no ; }
    sources ?= $(name).py $(name).cpp ;
    name = [ regex.replace $(name) "[/]" "~" ] ;
    return [ testing.make-test run-pyd
        : $(sources) /boost/python//boost_numpy /boost/python//boost_python
        : $(requirements) <include>$(numpy-include)
        : $(name) ] ;
}

rule py-version ( n )
{
    return $(py$(n)-version) ;
}

IMPORT $(__name__) : bpl-test : : bpl-test ;
IMPORT $(__name__) : numpy-test : : numpy-test ;
IMPORT $(__name__) : py-version : : py-version ;

cmd: