# Copyright Vladimir Prus 2002-2006.
# Copyright Dave Abrahams 2005-2006.
# Copyright Rene Rivera 2005-2007.
# Copyright Douglas Gregor 2005.
#
# 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)

# Usage:
#
#   bjam [options] [properties] [install|stage]
#
#   Builds and installs Boost.
#
# Targets and Related Options:
#
#   install                 Install headers and compiled library files to the
#   =======                 configured locations (below).
#
#   --prefix=<PREFIX>       Install architecture independent files here.
#                           Default; C:\Boost on Win32
#                           Default; /usr/local on Unix. Linux, etc.
#
#   --exec-prefix=<EPREFIX> Install architecture dependent files here.
#                           Default; <PREFIX>
#
#   --libdir=<DIR>          Install library files here.
#                           Default; <EPREFIX>/lib
#
#   --includedir=<HDRDIR>   Install header files here.
#                           Default; <PREFIX>/include
#
#   stage                   Build and install only compiled library files
#   =====                   to the stage directory.
#
#   --stagedir=<STAGEDIR>   Install library files here
#                           Default; ./stage
#
# Other Options:
#
#   --build-type=<type>     Build the specified pre-defined set of variations
#                           of the libraries. Note, that which variants get
#                           built depends on what each library supports.
#
#                               minimal (default) - Builds a minimal set of 
#                               variants. On Windows, these are static 
#                               multithreaded libraries in debug and release
#                               modes, using shared runtime. On Linux, these
#                               are static and shared multithreaded libraries
#                               in release mode.
#
#                               complete - Build all possible variations.
#
#   --build-dir=DIR         Build in this location instead of building
#                           within the distribution tree. Recommended!
#
#   --show-libraries        Displays the list of Boost libraries that require
#                           build and installation steps, then exit.
#
#   --layout=<layout>       Determines whether to choose library names
#                           and header locations such that multiple
#                           versions of Boost or multiple compilers can
#                           be used on the same system.
#
#                               versioned (default) - Names of boost binaries
#                               include the Boost version number, name and
#                               version of the compiler and encoded build
#                               properties.  Boost headers are installed in a
#                               subdirectory of <HDRDIR> whose name contains
#                               the Boost version number.
#
#                               tagged -- Names of boost binaries include the
#                               encoded build properties such as variant and
#                               threading, but do not including compiler name
#                               and version, or Boost version. This option is
#                               useful if you build several variants of Boost,
#                               using the same compiler.
#
#                               system - Binaries names do not include the
#                               Boost version number or the name and version
#                               number of the compiler.  Boost headers are
#                               installed directly into <HDRDIR>.  This option
#                               is intended for system integrators who are
#                               building distribution packages.
#
#   --buildid=ID            Adds the specified ID to the name of built
#                           libraries.  The default is to not add anything.
#
#   --help                  This message.
#
#   --with-<library>        Build and install the specified <library>
#                           If this option is used, only libraries
#                           specified using this option will be built.
#
#   --without-<library>     Do not build, stage, or install the specified
#                           <library>. By default, all libraries are built.
#
# Properties:
#
#   toolset=toolset         Indicates the toolset to build with.
#
#   variant=debug|release   Select the build variant
#
#   link=static|shared      Whether to build static or shared libraries
#
#   threading=single|multi  Whether to build single or multithreaded binaries
# 
#   runtime-link=static|shared      
#                           Whether to link to static or shared C and C++ runtime.
#   

# TODO:
#  - handle boost version
#  - handle python options such as pydebug

import generate ;
import modules ;
import set ;
import stage ;
import package ;
import path ;
import common ;
import os ;
import regex ;
import errors ;
import "class" : new ;
import common ;
import sequence ;
import symlink ;
import targets ;
import project ;

path-constant BOOST_ROOT : . ;
constant BOOST_VERSION : 1.40.0 ;
constant BOOST_JAMROOT_MODULE : $(__name__) ;

local version-tag = [ MATCH "^([^.]+)[.]([^.]+)[.]([^.]+)" : $(BOOST_VERSION) ]
    ;
if $(version-tag[3]) = 0
{
    version-tag = $(version-tag[1-2]) ;
}

constant BOOST_VERSION_TAG : $(version-tag:J="_") ;

# Option to choose how many variants to build. The default is "minimal".
local build-type = [ MATCH "^--build-type=(.*)" : [ modules.peek : ARGV ] ] ;
build-type ?= minimal ;
if ! ( $(build-type) in minimal complete )
{
    ECHO "The value of the --build-type option should be either 'complete' or 'minimal'" ;
    EXIT ;
}

rule handle-static-runtime ( properties * )
{
    # Using static runtime with shared libraries is impossible on Linux,
    # and dangerous on Windows. Therefore, we disallow it. This might
    # be drastic, but it was disabled for a while with nobody complaining.

    # For CW, static runtime is needed so that std::locale works.
    if <link>shared in $(properties) && <runtime-link>static in $(properties) &&
        ! ( <toolset>cw in $(properties) )
    {
        ECHO "error: link=shared together with runtime-link=static is not allowed" ;
        ECHO "error: such property combination is either impossible " ;
        ECHO "error: or too dangerious to be of any use" ;
        EXIT ;
    }
}


project boost
    : requirements <include>.
      # Disable auto-linking for all targets here, primarily because it caused
      # troubles with V2.
      <define>BOOST_ALL_NO_LIB=1
      # Used to encode variant in target name. See the 'tag' rule below.
      <tag>@$(__name__).tag
      <conditional>@handle-static-runtime
      # The standard library Sun compilers use by default has no chance
      # of working with Boost. Override it.
      <toolset>sun:<stdlib>sun-stlport
    : usage-requirements <include>.
    : build-dir bin.v2
    ;


# Setup convenient aliases for all libraries.

all-libraries = [ MATCH .*libs/(.*)/build/.* : [ glob libs/*/build/Jamfile.v2 ]
    [ glob libs/*/build/Jamfile ] ]
    ;

all-libraries = [ sequence.unique $(all-libraries) ] ;
# The function_types library has a Jamfile, but it's used for maintenance
# purposes, there's no library to build and install.
all-libraries = [ set.difference $(all-libraries) : function_types ] ;


local rule explicit-alias ( id : targets + )
{
    alias $(id) : $(targets) ;
    explicit $(id) ;
}


# First, the complicated libraries: where the target name in Jamfile is
# different from its directory name.
explicit-alias prg_exec_monitor : libs/test/build//boost_prg_exec_monitor ;
explicit-alias test_exec_monitor : libs/test/build//boost_test_exec_monitor ;
explicit-alias unit_test_framework : libs/test/build//boost_unit_test_framework ;
explicit-alias bgl-vis : libs/graps/build//bgl-vis ;
explicit-alias serialization : libs/serialization/build//boost_serialization ;
explicit-alias wserialization : libs/serialization/build//boost_wserialization ;
for local l in $(all-libraries)
{
    if ! $(l) in test graph serialization
    {
        explicit-alias $(l) : libs/$(l)/build//boost_$(l) ;
    }
}

alias headers : : : : <include>. ;


# Decides which libraries are to be installed by looking at --with-<library>
# --without-<library> arguments. Returns the list of directories under "libs"
# which must be built and installed.
#
rule libraries-to-install ( existing-libraries * )
{
   local argv = [ modules.peek : ARGV ] ;
   local with-parameter = [ MATCH --with-(.*) : $(argv) ] ;
   local without-parameter = [ MATCH --without-(.*) : $(argv) ] ;
   
   if ! $(with-parameter) && ! $(without-parameter)
   {
       # Nothing is specified on command line. See if maybe
       # project-config.jam has some choices. 
       local project-config-libs = [ modules.peek project-config : libraries ] ;
       with-parameter = [ MATCH --with-(.*) : $(project-config-libs) ] ;
       without-parameter = [ MATCH --without-(.*) : $(project-config-libs) ] ;
   }

   # Do some checks.
   if $(with-parameter) && $(without-parameter)
   {
       ECHO "error: both --with-<library> and --without-<library> specified" ;
       EXIT ;
   }

   local wrong = [ set.difference $(with-parameter) : $(existing-libraries) ] ;
   if $(wrong)
   {
       ECHO "error: wrong library name '$(wrong[1])' in the --with-<library> option." ;
       EXIT ;
   }
   local wrong = [ set.difference $(without-parameter) : $(existing-libraries) ] ;
   if $(wrong)
   {
       ECHO "error: wrong library name '$(wrong[1])' in the --without-<library> option." ;
       EXIT ;
   }

   if $(with-parameter)
   {
       return [ set.intersection $(existing-libraries) : $(with-parameter) ] ;
   }
   else
   {
       return [ set.difference $(existing-libraries) : $(without-parameter) ] ;
   }
}


# What kind of layout are we doing?
layout = [ MATCH "^--layout=(.*)" : [ modules.peek : ARGV ] ] ;
layout ?= versioned ;
layout-$(layout) = true ;


# Possible stage only location.
local stage-locate = [ MATCH "^--stagedir=(.*)" : [ modules.peek : ARGV ] ] ;
stage-locate ?= stage ;
path-constant BOOST_STAGE_LOCATE : $(stage-locate) ;


# Python location.
local python-root = [ MATCH "^--with-python-root=(.*)" : [ modules.peek : ARGV ]
    ] ;
PYTHON_ROOT ?= $(python-root) ;


# Select the libraries to install.
libraries = [ libraries-to-install $(all-libraries) ] ;

if --show-libraries in [ modules.peek : ARGV ]
{
    ECHO "The following libraries require building:" ;
    for local l in $(libraries)
    {
        ECHO "    - $(l)" ;
    }
    EXIT ;
}

# Custom build ID.
local build-id = [ MATCH "^--buildid=(.*)" : [ modules.peek : ARGV ] ] ;
if $(build-id)
{
    constant BUILD_ID : [ regex.replace $(build-id) "[*\\/:.\"\' ]" "_" ] ;
}


# This rule is called by Boost.Build to determine the name of target. We use it
# to encode the build variant, compiler name and boost version in the target
# name.
#
rule tag ( name : type ? : property-set )
{
    if $(type) in STATIC_LIB SHARED_LIB IMPORT_LIB
    {
        local result ;
        if $(layout) = versioned
        {
            result = [ common.format-name
                <base> <toolset> <threading> <runtime> -$(BOOST_VERSION_TAG)
                -$(BUILD_ID)
                : $(name) : $(type) : $(property-set) ] ;
        }        
        else if $(layout) = tagged
        {
            result = [ common.format-name
                <base> <threading> <runtime>
                -$(BUILD_ID)
                : $(name) : $(type) : $(property-set) ] ;            
        }
        else if $(layout) = system
        {
            result = [ common.format-name
                <base> 
                -$(BUILD_ID)
                : $(name) : $(type) : $(property-set) ] ;
        }
        else
        {
            ECHO "error: invalid layout '$(layout)'" ;
            EXIT ;               
        }
                
        # Optionally add version suffix. On NT, library with version suffix
        # will not be recognized by linkers. On CYGWIN, we get strage
        # duplicate symbol errors when library is generated with version
        # suffix. On OSX, version suffix is not needed -- the linker expects
        # the libFoo.1.2.3.dylib format. AIX linkers do not accept version
        # suffixes either. Pgi compilers can not accept library with version
        # suffix.
        if $(type) = SHARED_LIB &&
          ( ! ( [ $(property-set).get <target-os> ] in windows cygwin darwin aix ) &&
            ! ( [ $(property-set).get <toolset> ] in pgi ) )
        {
            result = $(result).$(BOOST_VERSION)  ;
        }
            
        return $(result) ;
    }    
}


# Install to system location.

install-requirements = <install-source-root>$(BOOST_ROOT)/boost ;

if $(layout-versioned)
{
    install-requirements += <install-header-subdir>boost-$(BOOST_VERSION_TAG)/boost ;
}
else
{
    install-requirements += <install-header-subdir>boost ;
}
if [ modules.peek : NT ]
{
    install-requirements += <install-default-prefix>C:/Boost ;
}
else if [ modules.peek : UNIX ]
{
    install-requirements += <install-default-prefix>/usr/local ;
}

local headers =
    # The .SUNWCCh files are present in tr1 include directory and have to be installed,
    # see http://lists.boost.org/Archives/boost/2007/05/121430.php
    [ path.glob-tree $(BOOST_ROOT)/boost : *.hpp *.ipp *.h *.inc *.SUNWCCh : CVS .svn ]
    [ path.glob-tree $(BOOST_ROOT)/boost/compatibility/cpp_c_headers : c* : CVS .svn ] 
    [ path.glob boost/tr1/tr1 : * : bcc32 sun CVS .svn ]
          ;

# Complete install.
package.install install-proper
    : $(install-requirements) <install-no-version-symlinks>on
    :
    : libs/$(libraries)/build
    : $(headers)
    ;
explicit install-proper ;

# Install just library.
install stage-proper
    : libs/$(libraries)/build
    : <location>$(stage-locate)/lib
      <install-dependencies>on <install-type>LIB
      <install-no-version-symlinks>on
    ;
explicit stage-proper ;


if $(layout-versioned) && ( [ modules.peek : NT ] || [ modules.peek : UNIX ] )
{
    rule make-unversioned-links ( project name ? : property-set : sources * )
    {
        local result ;
        local filtered ;
        local pattern ;
        local nt = [ modules.peek : NT ] ;

        # Collect the libraries that have the version number in 'filtered'.
        for local s in $(sources)
        {
            local m ;
            if $(nt)
            {
                m = [ MATCH "(.*[.]lib)" : [ $(s).name ] ] ;
            }
            else
            {
                m = [ MATCH "(.*[.]so[.0-9]+)" "(.*[.]dylib)" "(.*[.]a)" :
                    [ $(s).name ] ] ;
            }
            if $(m)
            {
                filtered += $(s) ;
            }
        }

        # Create links without version.
        for local s in $(filtered)
        {
            local name = [ $(s).name ] ;
            local ea = [ $(s).action ] ;
            local ep = [ $(ea).properties ] ;
            local a  = [ new non-scanning-action $(s) : symlink.ln : $(ep) ] ;

            local noversion-file ;
            if $(nt)
            {
                noversion-file = [ MATCH "(.*)-[0-9_]+(.*[.]lib)" : $(name) ] ;
            }
            else
            {
                noversion-file =
                  [ MATCH "(.*)-[0-9_]+(.*[.]so)[.0-9]*" : $(name) ]
                  [ MATCH "(.*)-[0-9_]+(.*[.]dylib)" : $(name) ]
                  [ MATCH "(.*)-[0-9_]+(.*[.]a)" : $(name) ]
                  [ MATCH "(.*)-[0-9_]+(.*[.]dll[.]a)" : $(name) ] ;
            }

            local new-name =
               $(noversion-file[1])$(noversion-file[2]) ;
            result += [ new file-target $(new-name) exact : [ $(s).type ] : $(project)
                    : $(a) ] ;

        }
        return $(result) ;
    }

    generate stage-unversioned : stage-proper :
        <generating-rule>@make-unversioned-links ;
    explicit stage-unversioned ;

    generate install-unversioned : install-proper :
        <generating-rule>@make-unversioned-links ;
    explicit install-unversioned ;
}
else
{
    # Create do-nothing aliases.
    alias stage-unversioned ;
    explicit stage-unversioned ;
    alias install-unversioned ;
    explicit install-unversioned ;
}

# This is a special metatarget class that handles the --build-type=complete
# option.
class top-level-target : alias-target-class
{
    import modules ;
    import errors ; 
    
    rule __init__ ( name : project : sources * : requirements *
        : default-build * : usage-requirements * )
    {
        alias-target-class.__init__ $(name) : $(project) : $(sources) :
            $(requirements) : $(default-build) : $(usage-requirements) ;
        
        local m = [ $(project).project-module ] ;
        self.build-type = [ modules.peek $(m) : build-type ] ;
        # On Linux, we build release variant by default, since few users will
        # ever want to debug C++ Boost libraries, and there's no ABI
        # incompatibility between debug and release variants. We build
        # shared and static libraries since that's what most packages
        # seem to provide (.so in libfoo and .a in libfoo-dev).
        self.minimal-properties = [ property-set.create 
            <variant>release <threading>multi <link>shared <link>static <runtime-link>shared ] ;
        # On Windows, new IDE projects use:
        #
        #   runtime-link=dynamic, threading=multi, variant=(debug|release)
        #
        # and in addition, C++ Boost's autolink defaults to static linking.
        self.minimal-properties-win = [ property-set.create 
            <variant>debug <variant>release <threading>multi <link>static <runtime-link>shared ] ;

        self.complete-properties = [ property-set.create
            <variant>debug <variant>release
            <threading>single <threading>multi
            <link>shared <link>static
            <runtime-link>shared <runtime-link>static ] ;
    }
    
    rule generate ( property-set )
    {
        if $(self.build-type) = minimal
        {
            local expanded ;
            
            local os = [ $(property-set).get <target-os> ] ;
            # Because we completely override parent's 'generate'
            # we need to check for default value of feature ourself.
            if ! $(os)
            {
                os = [ feature.defaults <target-os> ] ;
                os = $(os:G=) ;
            }
            
            if $(os) = windows
            {                
                expanded = [ targets.apply-default-build $(property-set)
                  : $(self.minimal-properties-win) ] ;
            }
            else
            {
                expanded = [ targets.apply-default-build $(property-set)
                  : $(self.minimal-properties) ] ;
            }            
            return [ build-multiple $(expanded) ] ;
        }
        else if $(self.build-type) = complete
        {                                    
            local expanded = [ targets.apply-default-build $(property-set)
              : $(self.complete-properties) ] ;
            
            # Filter inappopriate combinations
            local filtered ;
            for local p in $(expanded)
            {
                # See comment in handle-static-runtime regarding this logic.
                if [ $(p).get <link> ] = shared && [ $(p).get <runtime-link> ] = static
                   && [ $(p).get <toolset> ] != cw
                {
                    # Skip this
                }
                else
                {
                    filtered += $(p) ;
                }
            }            
            return [ build-multiple $(filtered) ] ;            
        }
        else
        {
            errors.error "Unknown build type" ; 
        }               
    }
    
    rule build-multiple ( property-sets * )
    {
        local usage-requirements = [ property-set.empty ] ;
        local result ;
        for local p in $(property-sets)
        {
            local r = [ alias-target-class.generate $(p) ] ;
            if $(r)
            {
                usage-requirements = [ $(usage-requirements).add $(r[1]) ] ;
                result += $(r[2-]) ;
            }
        }
        return $(usage-requirements) [ sequence.unique $(result) ] ;
    }
    
}

targets.create-metatarget top-level-target : [ project.current ]
  : install
  : install-proper install-unversioned 
  ;
targets.create-metatarget top-level-target : [ project.current ]
  : stage
  : stage-proper stage-unversioned 
  ;

explicit install ;
explicit stage ;

stage-abs = [ path.native [ path.root $(stage-locate)/lib [ path.pwd ] ] ] ;

# This target is built by default, and will forward to 'stage'
# after producing some explanations.
targets.create-metatarget top-level-target : [ project.current ]
  : forward
  : explain stage
  ;


message explain :
"\nBuilding C++ Boost.

After the build, the headers will be located at
  
    $(BOOST_ROOT)
    
The libraries will be located at  
    
    $(stage-abs)
     
Use 'bjam install --prefix=<path>' if you wish to install headers and 
libraries to a different location and remove the source tree.\n\n"
  ;


# Just build the libraries, don't install them anywhere. This is what happens
# with just "bjam --v2".
alias build_all : libs/$(libraries)/build ;


# This rule should be called from libraries' Jamfiles and will create two
# targets, "install" and "stage", that will install or stage that library. The
# --prefix option is respected, but --with and --without options, naturally, are
# ignored.
#
# - libraries -- list of library targets to install.
#
rule boost-install ( libraries * )
{
    package.install install
        : <dependency>/boost//install-proper-headers $(install-requirements)
        : # No binaries
        : $(libraries)
        : # No headers, it is handled by the dependency.
    ;

    install stage : $(libraries) : <location>$(BOOST_STAGE_LOCATE) ;

    local c = [ project.current ] ;
    local project-module = [ $(c).project-module ] ;
    module $(project-module)
    {
        explicit stage ;
        explicit install ;
    }
}


# Make project ids of all libraries known.
for local l in $(all-libraries)
{
    use-project /boost/$(l) : libs/$(l)/build ;
}