706 lines
22 KiB
Plaintext
706 lines
22 KiB
Plaintext
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# Boost.Build support specific for the Boost C++ Libraries.
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# Copyright Vladimir Prus 2002-2010.
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# Copyright Dave Abrahams 2005-2006.
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# Copyright Rene Rivera 2005-2007.
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# Copyright Douglas Gregor 2005.
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#
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE_1_0.txt or copy at
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# http://www.boost.org/LICENSE_1_0.txt)
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import "class" : new ;
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import common ;
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import configure ;
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import build-system ;
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import generate ;
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import modules ;
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import option ;
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import os ;
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import package ;
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import path ;
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import project ;
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import regex ;
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import set ;
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import targets ;
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import feature ;
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import property ;
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##############################################################################
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#
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# 0. General setup. Parse options, check them.
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#
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##############################################################################
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BOOST_ROOT = [ modules.binding $(__name__) ] ;
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BOOST_ROOT = $(BOOST_ROOT:D) ;
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rule set-version ( version )
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{
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BOOST_VERSION = $(version) ;
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local version-tag = [ MATCH ^([^.]+)[.]([^.]+)[.]([^.]+) : $(BOOST_VERSION)
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] ;
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if $(version-tag[3]) = 0
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{
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version-tag = $(version-tag[1-2]) ;
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}
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BOOST_VERSION_TAG = $(version-tag:J=_) ;
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}
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# Option to choose how many variants to build. The default is "minimal".
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build-type = [ option.get build-type ] ;
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build-type ?= minimal ;
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if ! ( $(build-type) in complete minimal )
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{
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EXIT The value of the --build-type option should be either 'complete' or
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'minimal' ;
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}
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# What kind of layout are we doing?
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layout = [ option.get layout : "" ] ;
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# On Windows, we used versioned layout by default in order to be compatible with
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# autolink. On other systems, we use system layout which is what every other
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# program uses. Note that the Windows check is static, and will not be affected
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# by specific build properties used.
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if ! $(layout)
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{
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if [ os.name ] = NT
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{
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layout = versioned ;
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}
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else
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{
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layout = system ;
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}
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}
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layout-$(layout) = true ;
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if $(layout) = system && $(build-type) = complete
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{
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ECHO error: Cannot use --layout=system with --build-type complete. ;
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ECHO error: Please use either --layout=versioned or --layout=tagged ;
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ECHO error: if you wish to build multiple variants. ;
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if [ os.name ] != NT
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{
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ECHO error: Note that --layout=system is used by default on Unix
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starting with Boost 1.40. ;
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}
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EXIT ;
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}
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# Possible stage only location.
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stage-locate = [ option.get stagedir ] ;
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stage-locate ?= stage ;
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BOOST_STAGE_LOCATE = $(stage-locate) ;
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# Custom build ID.
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build-id = [ option.get buildid ] ;
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if $(build-id)
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{
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BUILD_ID = [ regex.replace $(build-id) "[*\\/:.\"\' ]" _ ] ;
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}
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# Python build id (for Python libraries only).
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python-id = [ option.get "python-buildid" ] ;
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if $(python-id)
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{
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PYTHON_ID = [ regex.replace $(python-id) [*\\/:.\"\'] _ ] ;
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}
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################################################################################
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#
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# 1. 'tag' function adding decorations suitable to the properties if versioned
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# or tagged layout is requested. Called from Jamroot.
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#
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################################################################################
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rule tag ( name : type ? : property-set )
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{
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if $(type) in STATIC_LIB SHARED_LIB IMPORT_LIB
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{
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local result ;
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if $(layout) = versioned
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{
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result = [ common.format-name
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<base> <toolset> <threading> <runtime> -$(BOOST_VERSION_TAG)
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-$(BUILD_ID)
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: $(name) : $(type) : $(property-set) ] ;
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}
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else if $(layout) = tagged
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{
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result = [ common.format-name
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<base> <threading> <runtime>
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-$(BUILD_ID)
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: $(name) : $(type) : $(property-set) ] ;
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}
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else if $(layout) = system
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{
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result = [ common.format-name
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<base>
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-$(BUILD_ID)
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: $(name) : $(type) : $(property-set) ] ;
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}
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else
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{
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EXIT error: invalid layout '$(layout:E=)' ;
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}
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# Optionally add version suffix. On NT, library with version suffix will
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# not be recognized by linkers. On CYGWIN, we get strage duplicate
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# symbol errors when library is generated with version suffix. On OSX,
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# version suffix is not needed -- the linker expects the
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# libFoo.1.2.3.dylib format. AIX linkers do not accept version suffixes
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# either. Pgi compilers can not accept a library with version suffix.
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if $(type) = SHARED_LIB &&
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! [ $(property-set).get <target-os> ] in windows cygwin darwin aix &&
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! [ $(property-set).get <toolset> ] in pgi
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{
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result = $(result).$(BOOST_VERSION) ;
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}
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return $(result) ;
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}
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}
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# Specialized tag function to use for libraries linking to Python.
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# Appends value of --python-buildid if provided.
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rule python-tag ( name : type ? : property-set )
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{
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local result = $(name) ;
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if $(type) in STATIC_LIB SHARED_LIB IMPORT_LIB && $(PYTHON_ID)
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{
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result = $(result)-$(PYTHON_ID) ;
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}
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# forward to the boost tagging rule
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return [ tag $(result) : $(type) : $(property-set) ] ;
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}
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################################################################################
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#
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# 2. Declare targets that build and install all libraries. Specifically:
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#
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# - 'stage-proper' that puts all libraries in stage/lib
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# - 'install-proper' that install libraries and headers to system location
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# - 'stage-unversioned' that creates links to libraries without boost version
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# in name
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# - 'install-unversioned' which creates unversioned linked to installed
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# libraries.
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#
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################################################################################
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# Worker function suitable to the 'generate' metatarget. Creates a link to
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# 'source', striping any version number information from the name.
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rule make-unversioned-links ( project name ? : property-set : sources * )
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{
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local filter ;
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if [ modules.peek : NT ]
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{
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filter = (.*[.]lib) ;
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}
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else
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{
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filter =
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(.*[.]so)[.0-9]*
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(.*[.]dylib)
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(.*[.]a) ;
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}
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local result ;
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for local s in $(sources)
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{
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local m = [ MATCH ^(.*)-[0-9_]+$(filter)$ : [ $(s).name ] ] ;
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if $(m)
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{
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local ea = [ $(s).action ] ;
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local ep = [ $(ea).properties ] ;
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local a = [ new non-scanning-action $(s) : symlink.ln : $(ep) ] ;
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result += [ new file-target $(m:J=) exact : [ $(s).type ] :
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$(project) : $(a) ] ;
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}
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}
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return $(result) ;
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}
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rule filtered-target ( name : message + : sources + : requirements * )
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{
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message $(name)-message : warning: $(message) ;
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alias $(name) : $(sources) : $(requirements) ;
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alias $(name) : $(name)-message ;
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local p = [ project.current ] ;
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$(p).mark-target-as-explicit $(name) ;
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$(p).mark-target-as-explicit $(name)-message ;
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}
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rule declare_install_and_stage_proper_targets ( libraries * : headers * )
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{
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local p = [ project.current ] ;
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for local l in $(libraries)
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{
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if $(l) = locale
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{
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filtered-target $(l)-for-install :
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Skipping Boost.Locale library with threading=single. :
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libs/$(l)/build : <threading>multi ;
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}
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else if $(l) = wave
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{
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filtered-target $(l)-for-install :
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Skipping Boost.Wave library with threading=single. :
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libs/$(l)/build : <threading>multi ;
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}
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else if $(l) = thread
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{
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filtered-target $(l)-for-install :
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Skipping Boost.Thread library with threading=single. :
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libs/$(l)/build : <threading>multi ;
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}
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else
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{
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alias $(l)-for-install : libs/$(l)/build ;
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$(p).mark-target-as-explicit $(l)-for-install ;
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}
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}
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local library-targets = $(libraries)-for-install ;
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install-requirements = <install-source-root>$(BOOST_ROOT)/boost ;
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if $(layout-versioned)
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{
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install-requirements +=
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<install-header-subdir>boost-$(BOOST_VERSION_TAG)/boost ;
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}
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else
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{
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install-requirements += <install-header-subdir>boost ;
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}
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if [ os.name ] = NT
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{
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install-requirements += <install-default-prefix>C:/Boost ;
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}
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else
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{
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install-requirements += <install-default-prefix>/usr/local ;
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}
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p = [ project.current ] ;
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# Complete install.
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package.install install-proper
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: $(install-requirements) <install-no-version-symlinks>on
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:
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: $(libraries)-for-install
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: $(headers)
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;
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$(p).mark-target-as-explicit install-proper ;
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# Install just library.
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install stage-proper
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: $(libraries)-for-install
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: <location>$(stage-locate)/lib
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<install-dependencies>on <install-type>LIB
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<install-no-version-symlinks>on
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;
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$(p).mark-target-as-explicit stage-proper ;
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# Commented out as it does not seem to work. Whoever wrote this originally,
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# left some typos in the code, but when that got corrected and the code got
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# enabled - it started reporting ambiguous/duplicate target Boost Build
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# errors. Anyone requiring unversioned staged libraries needs to correct
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# those errors before reenabling this code. For more detailed information
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# see the related Boost library development mailing list thread at
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# 'http://lists.boost.org/Archives/boost/2012/06/194312.php'.
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# (06.07.2012.) (Jurko)
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#~ if $(layout-versioned) && ( [ modules.peek : NT ] || [ modules.peek : UNIX ] )
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#~ {
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#~ generate stage-unversioned : stage-proper :
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#~ <generating-rule>@boostcpp.make-unversioned-links ;
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#~ $(p).mark-target-as-explicit stage-unversioned ;
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#~
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#~ generate install-unversioned : install-proper :
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#~ <generating-rule>@boostcpp.make-unversioned-links ;
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#~ $(p).mark-target-as-explicit install-unversioned ;
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#~ }
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#~ else
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{
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# Create do-nothing aliases.
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alias stage-unversioned ;
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$(p).mark-target-as-explicit stage-unversioned ;
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alias install-unversioned ;
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$(p).mark-target-as-explicit install-unversioned ;
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}
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}
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################################################################################
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#
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# 3. Declare top-level targets 'stage' and 'install'. These examine the
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# --build-type option and, in case it is 'complete', build the 'install-proper'
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# and 'stage-proper' targets with a number of property sets.
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#
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################################################################################
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class top-level-target : alias-target-class
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{
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import modules ;
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rule __init__ ( name : project : sources * : requirements *
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: default-build * : usage-requirements * )
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{
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alias-target-class.__init__ $(name) : $(project) : $(sources) :
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$(requirements) : $(default-build) : $(usage-requirements) ;
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self.build-type = [ modules.peek boostcpp : build-type ] ;
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# On Linux, we build the release variant by default, since few users
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# will ever want to debug C++ Boost libraries, and there is no ABI
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# incompatibility between debug and release variants. We build shared
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# and static libraries since that is what most packages seem to provide
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# (.so in libfoo and .a in libfoo-dev).
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self.minimal-properties = [ property-set.create <variant>release
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<threading>multi <link>shared <link>static <runtime-link>shared ] ;
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# On Windows, new IDE projects use:
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#
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# runtime-link=dynamic, threading=multi, variant=(debug|release)
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#
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# and in addition, C++ Boost's autolink defaults to static linking.
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self.minimal-properties-win = [ property-set.create <variant>debug
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<variant>release <threading>multi <link>static <runtime-link>shared
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] ;
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self.complete-properties = [ property-set.create
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<variant>debug <variant>release
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<threading>single <threading>multi
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<link>shared <link>static
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<runtime-link>shared <runtime-link>static ] ;
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}
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rule generate ( property-set )
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{
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|
|
modules.poke : top-level-targets : [ modules.peek : top-level-targets ]
|
||
|
|
$(self.name) ;
|
||
|
|
if $(self.build-type) = minimal
|
||
|
|
{
|
||
|
|
local expanded ;
|
||
|
|
|
||
|
|
local os = [ $(property-set).get <target-os> ] ;
|
||
|
|
# Because we completely override the parent's 'generate' we need to
|
||
|
|
# check for default feature values ourselves.
|
||
|
|
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
|
||
|
|
{
|
||
|
|
import errors ;
|
||
|
|
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) ] ;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
rule declare_top_level_targets ( libraries * : headers * )
|
||
|
|
{
|
||
|
|
declare_install_and_stage_proper_targets $(libraries) : $(headers) ;
|
||
|
|
|
||
|
|
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
|
||
|
|
;
|
||
|
|
|
||
|
|
p = [ project.current ] ;
|
||
|
|
$(p).mark-target-as-explicit install stage ;
|
||
|
|
|
||
|
|
# 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
|
||
|
|
;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
stage-abs = [ path.native [ path.root $(stage-locate)/lib [ path.pwd ] ] ] ;
|
||
|
|
|
||
|
|
|
||
|
|
################################################################################
|
||
|
|
#
|
||
|
|
# 4. Add hook to report configuration before the build, and confirmation with
|
||
|
|
# setup instructions after the build.
|
||
|
|
#
|
||
|
|
################################################################################
|
||
|
|
|
||
|
|
message explain : "\nBuilding the Boost C++ Libraries.\n\n" ;
|
||
|
|
local p = [ project.current ] ;
|
||
|
|
$(p).mark-target-as-explicit explain ;
|
||
|
|
|
||
|
|
rule pre-build ( )
|
||
|
|
{
|
||
|
|
local tl = [ modules.peek : top-level-targets ] ;
|
||
|
|
if stage in $(tl) || install in $(tl)
|
||
|
|
{
|
||
|
|
# FIXME: Remove 'if' when Boost regression tests start using trunk bjam.
|
||
|
|
if PAD in [ RULENAMES ]
|
||
|
|
{
|
||
|
|
configure.print-component-configuration ;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
IMPORT $(__name__) : pre-build : : $(__name__).pre-build ;
|
||
|
|
build-system.set-pre-build-hook $(__name__).pre-build ;
|
||
|
|
|
||
|
|
# FIXME: Revise stage_abs.
|
||
|
|
rule post-build ( ok ? )
|
||
|
|
{
|
||
|
|
if forward in [ modules.peek : top-level-targets ]
|
||
|
|
{
|
||
|
|
if $(ok)
|
||
|
|
{
|
||
|
|
local include-path = [ path.native $(BOOST_ROOT) ] ;
|
||
|
|
ECHO "
|
||
|
|
|
||
|
|
The Boost C++ Libraries were successfully built!
|
||
|
|
|
||
|
|
The following directory should be added to compiler include paths:
|
||
|
|
|
||
|
|
$(include-path)
|
||
|
|
|
||
|
|
The following directory should be added to linker library paths:
|
||
|
|
|
||
|
|
$(stage-abs)
|
||
|
|
" ;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
IMPORT $(__name__) : post-build : : $(__name__).post-build ;
|
||
|
|
build-system.set-post-build-hook $(__name__).post-build ;
|
||
|
|
|
||
|
|
|
||
|
|
################################################################################
|
||
|
|
#
|
||
|
|
# 5. Top-level setup.
|
||
|
|
#
|
||
|
|
################################################################################
|
||
|
|
|
||
|
|
# 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-libs * )
|
||
|
|
{
|
||
|
|
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 libs = [ modules.peek project-config : libraries ] ;
|
||
|
|
with-parameter = [ MATCH ^--with-(.*) : $(libs) ] ;
|
||
|
|
without-parameter = [ MATCH ^--without-(.*) : $(libs) ] ;
|
||
|
|
}
|
||
|
|
|
||
|
|
# Do some checks.
|
||
|
|
if $(with-parameter) && $(without-parameter)
|
||
|
|
{
|
||
|
|
EXIT error: both --with-<library> and --without-<library> specified ;
|
||
|
|
}
|
||
|
|
|
||
|
|
local wrong = [ set.difference $(with-parameter) : $(existing-libs) ] ;
|
||
|
|
if $(wrong)
|
||
|
|
{
|
||
|
|
EXIT error: wrong library name '$(wrong[1])' in the --with-<library>
|
||
|
|
option. ;
|
||
|
|
}
|
||
|
|
local wrong = [ set.difference $(without-parameter) : $(existing-libs) ] ;
|
||
|
|
if $(wrong)
|
||
|
|
{
|
||
|
|
EXIT error: wrong library name '$(wrong[1])' in the --without-<library>
|
||
|
|
option. ;
|
||
|
|
}
|
||
|
|
|
||
|
|
if $(with-parameter)
|
||
|
|
{
|
||
|
|
return [ set.intersection $(existing-libs) : $(with-parameter) ] ;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return [ set.difference $(existing-libs) : $(without-parameter) ] ;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
rule declare-targets ( all-libraries * : headers * )
|
||
|
|
{
|
||
|
|
configure.register-components $(all-libraries) ;
|
||
|
|
|
||
|
|
# Select the libraries to install.
|
||
|
|
libraries = [ libraries-to-install $(all-libraries) ] ;
|
||
|
|
configure.components-building $(libraries) ;
|
||
|
|
|
||
|
|
if [ option.get "show-libraries" : : true ]
|
||
|
|
{
|
||
|
|
ECHO The following libraries require building: ;
|
||
|
|
for local l in $(libraries)
|
||
|
|
{
|
||
|
|
ECHO " - $(l)" ;
|
||
|
|
}
|
||
|
|
EXIT ;
|
||
|
|
}
|
||
|
|
|
||
|
|
declare_top_level_targets $(libraries) : $(headers) ;
|
||
|
|
}
|
||
|
|
|
||
|
|
# Returns the properties identifying the toolset. We'll use them
|
||
|
|
# below to configure checks. These are essentially same as in
|
||
|
|
# configure.builds, except we don't use address-model and
|
||
|
|
# architecture - as we're trying to detect them here.
|
||
|
|
#
|
||
|
|
rule toolset-properties ( properties * )
|
||
|
|
{
|
||
|
|
local toolset = [ property.select <toolset> : $(properties) ] ;
|
||
|
|
local toolset-version-property = "<toolset-$(toolset:G=):version>" ;
|
||
|
|
return [ property.select <target-os> <toolset> $(toolset-version-property) : $(properties) ] ;
|
||
|
|
}
|
||
|
|
|
||
|
|
feature.feature deduced-address-model : 32 64 : propagated optional composite hidden ;
|
||
|
|
feature.compose <deduced-address-model>32 : <address-model>32 ;
|
||
|
|
feature.compose <deduced-address-model>64 : <address-model>64 ;
|
||
|
|
|
||
|
|
rule deduce-address-model ( properties * )
|
||
|
|
{
|
||
|
|
local result ;
|
||
|
|
local filtered = [ toolset-properties $(properties) ] ;
|
||
|
|
|
||
|
|
if [ configure.builds /boost/architecture//32 : $(filtered) : 32-bit ]
|
||
|
|
{
|
||
|
|
result = 32 ;
|
||
|
|
}
|
||
|
|
else if [ configure.builds /boost/architecture//64 : $(filtered) : 64-bit ]
|
||
|
|
{
|
||
|
|
result = 64 ;
|
||
|
|
}
|
||
|
|
|
||
|
|
if $(result)
|
||
|
|
{
|
||
|
|
# Normally, returning composite feature here is equivalent to forcing
|
||
|
|
# consituent properties as well. But we only want to indicate toolset
|
||
|
|
# deduced default, so also pick whatever address-model is explicitly
|
||
|
|
# specified, if any.
|
||
|
|
result = <deduced-address-model>$(result) [ property.select <address-model> : $(properties) ] ;
|
||
|
|
}
|
||
|
|
return $(result) ;
|
||
|
|
}
|
||
|
|
|
||
|
|
rule address-model ( )
|
||
|
|
{
|
||
|
|
return <conditional>@boostcpp.deduce-address-model ;
|
||
|
|
}
|
||
|
|
|
||
|
|
local deducable-architectures = arm mips1 power sparc x86 combined ;
|
||
|
|
feature.feature deduced-architecture : $(deducable-architectures) : propagated optional composite hidden ;
|
||
|
|
for a in $(deducable-architectures)
|
||
|
|
{
|
||
|
|
feature.compose <deduced-architecture>$(a) : <architecture>$(a) ;
|
||
|
|
}
|
||
|
|
|
||
|
|
rule deduce-architecture ( properties * )
|
||
|
|
{
|
||
|
|
local result ;
|
||
|
|
local filtered = [ toolset-properties $(properties) ] ;
|
||
|
|
if [ configure.builds /boost/architecture//arm : $(filtered) : arm ]
|
||
|
|
{
|
||
|
|
result = arm ;
|
||
|
|
}
|
||
|
|
else if [ configure.builds /boost/architecture//mips1 : $(filtered) : mips1 ]
|
||
|
|
{
|
||
|
|
result = mips1 ;
|
||
|
|
}
|
||
|
|
else if [ configure.builds /boost/architecture//power : $(filtered) : power ]
|
||
|
|
{
|
||
|
|
result = power ;
|
||
|
|
}
|
||
|
|
else if [ configure.builds /boost/architecture//sparc : $(filtered) : sparc ]
|
||
|
|
{
|
||
|
|
result = sparc ;
|
||
|
|
}
|
||
|
|
else if [ configure.builds /boost/architecture//x86 : $(filtered) : x86 ]
|
||
|
|
{
|
||
|
|
result = x86 ;
|
||
|
|
}
|
||
|
|
else if [ configure.builds /boost/architecture//combined : $(filtered) : combined ]
|
||
|
|
{
|
||
|
|
result = combined ;
|
||
|
|
}
|
||
|
|
|
||
|
|
if $(result)
|
||
|
|
{
|
||
|
|
# See comment in deduce-address-model.
|
||
|
|
result = <deduced-architecture>$(result) [ property.select <architecture> : $(properties) ] ;
|
||
|
|
}
|
||
|
|
return $(result) ;
|
||
|
|
}
|
||
|
|
|
||
|
|
rule architecture ( )
|
||
|
|
{
|
||
|
|
return <conditional>@boostcpp.deduce-architecture ;
|
||
|
|
}
|