boost/Jamroot

# Copyright Vladimir Prus 2002-2006.
# Copyright Dave Abrahams 2005-2006.
# Copyright René Ferdinand Rivera Morell 2005-2024.
# 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:
#
#   b2 [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 Windows
#                           Default: /usr/local on Unix, Linux, etc.
#
#   --exec-prefix=<EPREFIX> Install architecture dependent files here.
#                           Default: <PREFIX>
#
#   --libdir=<LIBDIR>       Install library files here.
#                           Default: <EPREFIX>/lib
#
#   --includedir=<HDRDIR>   Install header files here.
#                           Default: <PREFIX>/include
#
#   --cmakedir=<CMAKEDIR>   Install CMake configuration files here.
#                           Default: <LIBDIR>/cmake
#
#   --no-cmake-config       Do not install CMake configuration files.
#
#   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        Display the list of Boost libraries that require
#                           build and installation steps, and then exit.
#
#   --layout=<layout>       Determine 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 -- 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 building
#                               distribution packages.
#
#                           The default value is 'versioned' on Windows, and
#                           'system' on Unix.
#
#   --buildid=ID            Add the specified ID to the name of built libraries.
#                           The default is to not add anything.
#
#   --python-buildid=ID     Add the specified ID to the name of built libraries
#                           that depend on Python. The default is to not add
#                           anything. This ID is added in addition to --buildid.
#
#   --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         Indicate 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.
#

require-b2 5.1.0 ;

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

import boostcpp ;
import package ;

import sequence ;
import xsltproc ;
import set ;
import path ;
import link ;
import notfile ;
import virtual-target ;
import "class" : new ;
import property-set ;
import threadapi-feature ;
import option ;
import property ;
import project ;
# Backslash because of `bcp --namespace`
import tools/boost\_install/boost-install ;

path-constant BOOST_ROOT : . ;
constant BOOST_VERSION : 1.91.0 ;
constant BOOST_JAMROOT_MODULE : $(__name__) ;

# Allow subprojects to simply `import config : requires ;` to get access to the requires rule
import-search $(BOOST_ROOT)/libs/config/checks ;
import-search $(BOOST_ROOT)/libs/predef/tools/check ;

boostcpp.set-version $(BOOST_VERSION) ;

use-project /boost/architecture : libs/config/checks/architecture ;

local all-headers =
    [ MATCH .*libs/(.*)/include/boost : [ glob libs/*/include/boost libs/*/*/include/boost ] ] ;

for dir in $(all-headers)
{
    link-directory $(dir)-headers : libs/$(dir)/include/boost : <location>. ;
    explicit $(dir)-headers ;
}

if $(all-headers)
{
    constant BOOST_MODULARLAYOUT : $(all-headers) ;
}

project /boost
    : requirements <include>.

      [ boostcpp.platform ]

      # 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
      <conditional>@clang-darwin-cxxstd-11
      # Comeau does not support shared lib
      <toolset>como:<link>static
      <toolset>como-linux:<define>_GNU_SOURCE=1
      # When building docs within Boost, we want the standard Boost style
      <xsl:param>boost.defaults=Boost
      <conditional>@threadapi-feature.detect
    : usage-requirements <include>.
    : default-build
      <visibility>hidden
      <threading>multi
    : build-dir bin.v2
    ;

# General, top-level, modular project searching. Also include tools in the
# project search.
project-search /boost : libs tools ;
# Temporary custom project searching to account for special library paths.
project-search /boost : libs/numeric ;
project-search /boost/numeric_conversion : libs/numeric/conversion ;

# 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 )
{
    return [ boostcpp.tag $(name) : $(type) : $(property-set) ] ;
}

rule python-tag ( name : type ? : property-set )
{
    return [ boostcpp.python-tag $(name) : $(type) : $(property-set) ] ;
}

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 without anybody complaining.

    local argv = [ modules.peek : ARGV ] ;

    if <link>shared in $(properties)
        && <runtime-link>static in $(properties)
        # For CW, static runtime is needed so that std::locale works.
        && ! ( <toolset>cw in $(properties) )
        && ! --allow-shared-static in $(argv)
    {
        boostcpp.emit-shared-static-warning ;
        return <build>no ;
    }
}

rule clang-darwin-cxxstd-11 ( properties * )
{
    # AppleClang defaults to C++03

    local result = [ property.select <cxxstd> : $(properties) ] ;

    if <toolset-clang:platform>darwin in $(properties)
    {
        result ?= <cxxstd>11 ;
    }

    return $(result) ;
}

# All libraries.
local all-libraries
    = [ MATCH .*libs/(.*)/meta/libraries.json : [ glob libs/*/meta/libraries.json ] ] ;

# Find all the libraries that have something to build (the old way).
local all-libraries-to-build
    = [ MATCH .*libs/(.*)/build/.* : [ glob libs/*/build/Jamfile.v2 ]
        [ glob libs/*/build/Jamfile ] ] ;
all-libraries-to-build = [ sequence.unique $(all-libraries-to-build) ] ;
# The function_types library has a Jamfile, but it's used for maintenance
# purposes, there's no library to build and install.
all-libraries-to-build = [ set.difference $(all-libraries-to-build) : function_types ] ;

# Find all the libraries that have a library-root build declaration (modular way).
local all-libraries-modular-build
    = [ MATCH .*libs/(.*)/build.jam : [ glob libs/*/build.jam ] ] ;

# Modular and not are mutually exclusive as they have different lib targets.
local all-libraries-old-build = [ set.difference $(all-libraries-to-build) : $(all-libraries-modular-build) ] ;

# The header only libraries that are not of the new modular form. For which we
# will create synthetic projects and targets to simulate the new modular form.
local all-libraries-to-declare
    = [ set.difference $(all-libraries)
        : $(all-libraries-modular-build) $(all-libraries-old-build) ] ;
if ! [ glob libs/numeric/conversion/build.jam ]
{
    all-libraries-to-declare += numeric_conversion ;
}
if ! [ glob libs/numeric/interval/build.jam ]
{
    all-libraries-to-declare += interval ;
}
if ! [ glob libs/numeric/odeint/build.jam ]
{
    all-libraries-to-declare += odeint ;
}
if ! [ glob libs/numeric/ublas/build.jam ]
{
    all-libraries-to-declare += ublas ;
}
all-libraries-to-declare = [ SORT $(all-libraries-to-declare) ] ;

# ECHO "INFO: Build Libraries:" [ SORT $(all-libraries-old-build) ] ;
# ECHO "INFO: Modular Libraries:" [ SORT $(all-libraries-modular-build) ] ;
# ECHO "INFO: Declared Libraries:" [ SORT $(all-libraries-to-declare) ] ;
# EXIT : 0 ;

# Setup convenient aliases for all libraries.

# 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 ]
    [ alias test_exec_monitor : libs/test/build//boost_test_exec_monitor ]
    [ alias unit_test_framework : libs/test/build//boost_unit_test_framework ]
    [ alias serialization : libs/serialization/build//boost_serialization ]
    [ alias wserialization : libs/serialization/build//boost_wserialization ]
    ;
for local l in $(all-libraries-old-build)
{
    if ! $(l) in test graph serialization headers
    {
        explicit [ alias $(l) : libs/$(l)/build//boost_$(l) ] ;
    }
}
for local l in $(all-libraries-modular-build)
{
    if ! $(l) in test graph serialization headers
    {
        explicit [ alias $(l) : /boost/$(l)//boost_$(l) ] ;
    }
}

rule do-nothing { }

rule generate-alias ( project name : property-set : sources * )
{
    local action-name = [ $(property-set).get <action> ] ;
    local m = [ MATCH ^@(.*) : $(action-name) ] ;
    property-set = [ property-set.empty ] ;
    local action = [ new action $(sources) : $(m[1]) : $(property-set) ] ;
    local t = [ new notfile-target $(name) : $(project) : $(action) ] ;
    return [ virtual-target.register $(t) ] ;
}

generate headers : $(all-headers)-headers : <generating-rule>@generate-alias <action>@do-nothing : : <include>.  ;

#alias headers : $(all-headers)-headers : : : <include>.  ;
explicit headers ;

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

if [ path.exists $(BOOST_ROOT)/tools/inspect/build ]
{
    use-project /boost/tools/inspect : tools/inspect/build ;
}

if [ path.exists $(BOOST_ROOT)/libs/wave/tool/build ]
{
    use-project /boost/libs/wave/tool : $(BOOST_ROOT)/libs/wave/tool/build ;
}

# Make the boost-install rule visible in subprojects

# 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 * )
{
    boost-install.boost-install $(libraries) ;
}

# Creates a library target, adding autolink support and also creates
# stage and install targets via boost-install, above.
rule boost-lib ( name : sources * : requirements * : default-build * : usage-requirements * )
{
    autolink = <link>shared:<define>BOOST_$(name:U)_DYN_LINK=1 ;
    name = boost_$(name) ;
    lib $(name)
        : $(sources)
        : $(requirements) $(autolink)
        : $(default-build)
        : $(usage-requirements) $(autolink)
        ;
    boost-install $(name) ;
}


# Declare special top-level targets that build and install the desired variants
# of the libraries.
boostcpp.declare-targets $(all-libraries-to-build) ;

# Declare a Boost library and run related declaration rules. This should be
# called from the libroot/build.jam to define the components of a Boost lib.
# The first arg is the base ID of the library. Each subsequence arg is a
# Boost (boost-x) declaration rule to call with arguments.
#
# For example:
#
# call-if : boost-library serialization
#   : install boost_serialization boost_wserialization ;
#
rule boost-library ( id ? : options * : * )
{
    # ECHO "INFO: Declare Boost library:" $(id) ;
    local called-boost-install ;
    for n in 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
    {
        local option = $($(n)) ;
        if $(option)
        {
            call-if : boost-$(option[1]) $(option[2-]) ;
            if $(option[1]) = install
            {
                called-boost-install = true ;
            }
        }
    }
    if ! $(called-boost-install)
    {
        # If the library didn't indicate an install build target it's likely
        # header only. We should declare empty install targets to allow for
        # generic handling.
        boost-install.boost-install ;
    }
}

# Declare projects and targets for all placeholder, header only, not yet
# modular libraries.
#
# NOTE: This has to be after the boost-* rule definitions to ensure that those
# are available for import into the new projects.
local location = [ project.attribute $(__name__) location ] ;
for local lib in $(all-libraries-to-declare)
{
    local lib-path
        = [ path.join $(location) libs $(lib) ] ;
    if $(lib) = numeric_conversion
    {
        lib-path = [ path.join $(location) libs/numeric/conversion ] ;
    }
    else if $(lib) in interval odeint ublas
    {
        lib-path = [ path.join $(location) libs/numeric/$(lib) ] ;
    }
    local lib-module
        = [ project.load $(lib-path) : synthesize ] ;
    modules.poke $(lib-module) : BOOST_LIB_PROJECT : /boost/$(lib) ;
    modules.poke $(lib-module) : BOOST_LIB_TARGET : boost_$(lib) ;
    project.push-current [ project.target $(lib-module) ] ;
    module $(lib-module)
    {
        project $(BOOST_LIB_PROJECT)
            : requirements
                <implicit-dependency>/boost//headers
            ;
        alias $(BOOST_LIB_TARGET) ;
    }
    project.pop-current ;
}

# Backslash because of `bcp --namespace`

if ! [ project.search /boost/tools/boost\_install ]
{
    use-project /boost/tools/boost\_install : tools/boost\_install ;
}

# Ensure "modular" libraries' projects are loaded before build request is
# calculated. This is necessary for subprojects that define custom features
# to be set by users on command line.
# This part should stay at the bottom of the file, because subprojects may rely
# on rules or constants from it.
for local l in $(all-libraries-modular-build)
{
    # project.find returns the module for the project, which ensures that the
    # project is loaded. The convoluted way the rule is invoked is due to the
    # fact that project.find can only be called from a project target instance.
    modules.call-in [ project.target $(__name__) ]
        : project.find /boost/$(l)
        : $(location) ;
}