darwin.jam

Boost provides free peer-reviewed portable C++ source libraries. We emphasize libraries that work

# Copyright 2003 Christopher Currie
# Copyright 2006 Dave Abrahams 
# Copyright 2003, 2004, 2005, 2006 Vladimir Prus 
# Copyright 2005-2007 Mat Marcus
# Copyright 2005-2007 Adobe Systems Incorporated
# Copyright 2007-2008 Rene Rivera
# Distributed under the Boost Software License, Version 1.0. 
# (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) 

#  Please see http://article.gmane.org/gmane.comp.lib.boost.build/3389/
#  for explanation why it's a separate toolset.

import feature : feature ;
import toolset : flags ;
import type ;
import common ;
import generators ;
import path : basename ;

## Use a framework.
feature framework : : free ;

## The MacOSX versions we can target.
.macosx-versions =
    10.5 10.4 10.3 10.2 10.1
    iphone-2.0 iphone-1.x iphonesim-2.0
    ;

## The MacOSX version to compile for, which maps to the SDK to use (sysroot).
feature macosx-version
    : $(.macosx-versions)
    : propagated link-incompatible symmetric optional ;

## The minimal MacOSX version to target.
feature macosx-version-min
    : $(.macosx-versions)
    : propagated optional ;

#############################################################################

if [ MATCH (--debug-configuration) : [ modules.peek : ARGV ] ]
{
    .debug-configuration = true ;
}

feature.extend toolset : darwin ;
import gcc ;
toolset.inherit-generators darwin : gcc ;

generators.override darwin.prebuilt : builtin.prebuilt ;
generators.override darwin.searched-lib-generator : searched-lib-generator ;

# Override default do-nothing generators.
generators.override darwin.compile.c.pch   : pch.default-c-pch-generator   ;
generators.override darwin.compile.c++.pch : pch.default-cpp-pch-generator ;

toolset.inherit-rules darwin : gcc ;
toolset.inherit-flags darwin : gcc     
  :  <runtime-link>static
     <architecture>arm/<address-model>32
     <architecture>arm/<address-model>64
     <architecture>arm/<instruction-set>
     <architecture>x86/<address-model>32
     <architecture>x86/<address-model>64
     <architecture>x86/<instruction-set>
     <architecture>power/<address-model>32
     <architecture>power/<address-model>64
     <architecture>power/<instruction-set>  ;

# Options:
#
#   <root>PATH
#       Platform root path. The common autodetection will set this to
#       "/Developer". And when a command is given it will be set to
#       the corresponding "*.platform/Developer" directory.
#
rule init ( version ? : command * : options * : requirement * )
{
    # - The root directory of the tool install.
    local root = [ feature.get-values <root> : $(options) ] ;
    
    # - The bin directory where to find the commands to execute.
    local bin ;
    
    # - The configured compile driver command.
    local command = [ common.get-invocation-command darwin : g++ : $(command) ] ;
    
    # - Autodetect the root and bin dir if not given.
    if $(command)
    {
        bin ?= [ common.get-absolute-tool-path $(command[1]) ] ;
        if $(bin) = "/usr/bin"
        {
            root ?= /Developer ;
        }
        else
        {
            local r = $(bin:D) ;
            r = $(r:D) ;
            root ?= $(r) ;
        }
    }
    
    # - Autodetect the version if not given.
    if $(command)
    {
        # - The 'command' variable can have multiple elements. When calling
        #   the SHELL builtin we need a single string.
        local command-string = $(command:J=" ") ;
        version ?= [ MATCH "^([0-9.]+)"
            : [ SHELL "$(command-string) -dumpversion" ] ] ;
    }
    
    # - Define the condition for this toolset instance.
    local condition =
        [ common.check-init-parameters darwin $(requirement) : version $(version) ] ;
    
    # - Set the toolset generic common options.
    common.handle-options darwin : $(condition) : $(command) : $(options) ;
    
    # - GCC 4.0 and higher in Darwin does not have -fcoalesce-templates.
    if $(version) < "4.0.0"
    {
        flags darwin.compile.c++ OPTIONS $(condition) : -fcoalesce-templates ;
    }
    # - GCC 4.2 and higher in Darwin does not have -Wno-long-double.
    if $(version) < "4.2.0"
    {
        flags darwin.compile OPTIONS $(condition) : -Wno-long-double ;
    }

    # - Set the link flags common with the GCC toolset.
    gcc.init-link-flags darwin darwin $(condition) ;

    # - The symbol strip program.
    local strip ;
    if <striper> in $(options)
    {
        # We can turn off strip by specifying it as empty. In which
        # case we switch to using the linker to do the strip.
        flags darwin.link.dll OPTIONS
            $(condition)/<main-target-type>LIB/<link>shared/<address-model>32/<debug-symbols>off : -Wl,-x ;
        flags darwin.link.dll OPTIONS
            $(condition)/<main-target-type>LIB/<link>shared/<address-model>/<debug-symbols>off : -Wl,-x ;
        flags darwin.link OPTIONS
            $(condition)/<main-target-type>EXE/<address-model>32/<debug-symbols>off : -s ;
        flags darwin.link OPTIONS
            $(condition)/<main-target-type>EXE/<address-model>/<debug-symbols>off : -s ;
    }
    else
    {
        # Otherwise we need to find a strip program to use. And hence
        # also tell the link action that we need to use a strip
        # post-process.
        flags darwin.link NEED_STRIP $(condition)/<debug-symbols>off : "" ;        
        strip =
            [ common.get-invocation-command darwin
                : strip : [ feature.get-values <striper> : $(options) ] : $(bin) : search-path ] ;
        flags darwin.link .STRIP $(condition) : $(strip[1]) ;
        if $(.debug-configuration)
        {
            ECHO notice: using strip :: $(condition) :: $(strip[1]) ;
        }
    }

    # - The archive builder (libtool is the default as creating
    #   archives in darwin is complicated.
    local archiver =
        [ common.get-invocation-command darwin
            : libtool : [ feature.get-values <archiver> : $(options) ] : $(bin) : search-path ] ;
    flags darwin.archive .LIBTOOL $(condition) : $(archiver[1]) ;
    if $(.debug-configuration)
    {
        ECHO notice: using archiver :: $(condition) :: $(archiver[1]) ;
    }
    
    # - Initialize the SDKs available in the root for this tool.
    local sdks = [ init-available-sdk-versions $(condition) : $(root) ] ;
    
    #~ ECHO --- ;
    #~ ECHO --- bin :: $(bin) ;
    #~ ECHO --- root :: $(root) ;
    #~ ECHO --- version :: $(version) ;
    #~ ECHO --- condition :: $(condition) ;
    #~ ECHO --- strip :: $(strip) ;
    #~ ECHO --- archiver :: $(archiver) ;
    #~ ECHO --- sdks :: $(sdks) ;
    #~ ECHO --- ;
    #~ EXIT ;
}

# Determine the MacOSX SDK versions installed and their locations.
local rule init-available-sdk-versions ( condition * : root ? )
{
    root ?= /Developer ;
    local sdks-root = $(root)/SDKs ;
    local sdks = [ GLOB $(sdks-root) : MacOSX*.sdk iPhoneOS*.sdk iPhoneSimulator*.sdk ] ;
    local result ;
    for local sdk in $(sdks)
    {
        local sdk-match = [ MATCH ([^0-9]+)([0-9]+)[.]([0-9x]+)[.]?([0-9x]+)? : $(sdk:D=) ] ;
        local sdk-platform = $(sdk-match[1]:L) ;
        local sdk-version = $(sdk-match[2]).$(sdk-match[3]) ;
        if $(sdk-version)
        {
            switch $(sdk-platform)
            {
                case macosx :
                {
                    sdk-version = $(sdk-version) ;
                }
                case iphoneos :
                {
                    sdk-version = iphone-$(sdk-version) ;
                }
                case iphonesimulator :
                {
                    sdk-version = iphonesim-$(sdk-version) ;
                }
                case * :
                {
                    sdk-version = $(sdk-version:J=-) ;
                }
            }
            result += $(sdk-version) ;
            flags darwin.compile OPTIONS $(condition)/<macosx-version>$(sdk-version)
                : -isysroot $(sdk) ;
            flags darwin.link OPTIONS $(condition)/<macosx-version>$(sdk-version)
                : -isysroot $(sdk) ;
            if $(.debug-configuration)
            {
                ECHO notice: available sdk :: $(condition)/<macosx-version>$(sdk-version) :: $(sdk) ;
            }
        }
    }
    return $(result) ;
}

# Generic options.
flags darwin.compile OPTIONS <flags> ;

# Minimal OSX target option. Note that the default is for the min-version
# option to not be included to let the compiler default take hold.
for local macosx-version in $(.macosx-versions)
{
    flags darwin.compile OPTIONS <macosx-version-min>$(macosx-version)
        : -mmacosx-version-min=$(macosx-version) ;
    flags darwin.link OPTIONS <macosx-version-min>$(macosx-version)
        : -mmacosx-version-min=$(macosx-version) ;
}

# The following adds objective-c support to darwin.
# Thanks to http://thread.gmane.org/gmane.comp.lib.boost.build/13759

generators.register-c-compiler darwin.compile.m : OBJECTIVE_C : OBJ : <toolset>darwin ;
generators.register-c-compiler darwin.compile.mm : OBJECTIVE_CPP : OBJ : <toolset>darwin ;

rule compile.m
{
    LANG on $(<) = "-x objective-c" ;
}

actions compile.m
{
    "$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
}

rule compile.mm
{
    LANG on $(<) = "-x objective-c++" ;
}

actions compile.mm
{
    "$(CONFIG_COMMAND)" $(LANG) $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -o "$(<)" "$(>)"
}

# Add option selection for combined and specific architecture combinations.

local rule arch-addr-flags ( toolset variable
    : architecture : address-model + : values + : default ? )
{
    if $(default)
    {
        flags $(toolset) $(variable)
            <architecture>$(architecture)/<address-model>
            : $(values) ;
    }
    flags $(toolset) $(variable)
        <architecture>/<address-model>$(address-model)
        <architecture>$(architecture)/<address-model>$(address-model)
        : $(values) ;
}

arch-addr-flags darwin OPTIONS : combined : 32 : -arch i386 -arch ppc : default ;
arch-addr-flags darwin OPTIONS : combined : 64 : -arch x86_64 -arch ppc64 ;

arch-addr-flags darwin OPTIONS : x86 : 32 : -arch i386 : default ;
arch-addr-flags darwin OPTIONS : x86 : 64 : -arch x86_64 ;

arch-addr-flags darwin OPTIONS : power : 32 : -arch ppc : default ;
arch-addr-flags darwin OPTIONS : power : 64 : -arch ppc64 ;

arch-addr-flags darwin OPTIONS : arm : 32 : -arch arm : default ;

# Set the max header padding to allow renaming of libs for installation.
flags darwin.link.dll OPTIONS : -headerpad_max_install_names ;

# To link the static runtime we need to link to all the core runtime libraries.
flags darwin.link OPTIONS <runtime-link>static
    : -nodefaultlibs -shared-libgcc -lstdc++-static -lgcc_eh -lgcc -lSystem ;

# Strip as much as possible when optimizing.
flags darwin.link OPTIONS <optimization>speed : -Wl,-dead_strip -no_dead_strip_inits_and_terms ;
flags darwin.link OPTIONS <optimization>space : -Wl,-dead_strip -no_dead_strip_inits_and_terms ;

# Dynamic/shared linking.
flags darwin.compile OPTIONS <link>shared : -dynamic ;

# Misc options.
flags darwin.compile OPTIONS : -no-cpp-precomp -gdwarf-2 ;

# Add the framework names to use.
flags darwin.link FRAMEWORK <framework> ;

# This is flag is useful for debugging the link step
# uncomment to see what libtool is doing under the hood
#~ flags darwin.link.dll OPTIONS : -Wl,-v ;

_ = " " ;

# set up the -F option to include the paths to any frameworks used.
local rule prepare-framework-path ( target + )
{
    # The -framework option only takes basename of the framework.
    # The -F option specifies the directories where a framework
    # is searched for.  So, if we find <framework> feature
    # with some path, we need to generate property -F option.
    local framework-path = [ on $(target) return $(FRAMEWORK:D) ] ;

    # Be sure to generate no -F if there's no path.
    if $(framework-path) != ""
    {
        FRAMEWORK_PATH on $(target) += -F$(framework-path) ;
    }
}

rule link
{
    prepare-framework-path $(<) ;
}

# Note that using strip without any options was reported to result in broken
# binaries, at least on OS X 10.5.5, see:
#    http://svn.boost.org/trac/boost/ticket/2347
# So we pass -S -x.
actions link bind LIBRARIES
{
    "$(CONFIG_COMMAND)" -L"$(LINKPATH)" -o "$(<)" "$(>)" "$(LIBRARIES)" -l$(FINDLIBS-SA) -l$(FINDLIBS-ST) $(FRAMEWORK_PATH) -framework$(_)$(FRAMEWORK:D=:S=) $(OPTIONS) $(USER_OPTIONS)
    $(NEED_STRIP)"$(.STRIP)" $(NEED_STRIP)-S $(NEED_STRIP)-x $(NEED_STRIP)"$(<)"
}

rule link.dll
{
    prepare-framework-path $(<) ;
}

actions link.dll bind LIBRARIES
{
    "$(CONFIG_COMMAND)" -dynamiclib -Wl,-single_module -install_name "$(<:B)$(<:S)" -L"$(LINKPATH)" -o "$(<)" "$(>)" "$(LIBRARIES)" -l$(FINDLIBS-SA) -l$(FINDLIBS-ST) $(FRAMEWORK_PATH) -framework$(_)$(FRAMEWORK:D=:S=) $(OPTIONS) $(USER_OPTIONS)
}

# We use libtool instead of ar to support universal binary linking
# TODO: Find a way to use the underlying tools, i.e. lipo, to do this.
actions piecemeal archive
{
    "$(.LIBTOOL)" -static -o "$(<:T)"  $(ARFLAGS)  "$(>:T)"
}