# (C) Copyright Rene Rivera, 2002-2003.
# 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)

# The following #// line will be used by the regression test table generation
# program as the column heading for HTML tables. Must not include version number.
#//<a href="http://gcc.gnu.org/">GNU<br>GCC</a>

# For adding framwork libraries; like <framework>Python, <framework>Carbon, etc.
free-feature framework ;

# Specify the loader for bundles.
free-feature bundle-loader ;

# Controll generation of compiler warnings.
feature warnings : on off ;

# Type of shared object to create.
free-feature link-format ;

# compute directories for invoking GCC
#
# The gcc toolset can be user-configured using the following
# variables:
#
# GCC_ROOT_DIRECTORY
#       The directory in which GCC was installed. Defaults to
#       unset. Usually, there is no need to set this variable at
#       all. However, if G++ is not in the path it is usually
#       sufficient to configure this one variable. More fine-grained
#       configuration is available by setting the following:
#
# GCC_BIN_DIRECTORY
#       the directory prefix used to find the gcc executables. Defaults to
#       $(GCC_ROOT_DIRECTORY)/bin/, or "" if GCC_ROOT_DIRECTORY is
#       not set.
#
# GCC_INCLUDE_DIRECTORY
#       the directory in which to find system includes. Defaults to
#       empty.
#
# GCC_STDLIB_DIRECTORY
#       the directory in which to find the standard library
#       objects associated with this build of gcc. Defaults to
#       $(GCC_ROOT_DIRECTORY)/lib. 
#
# GXX
#       The name by which g++ is invoked. You can also use this in
#       lieu of setting the <cxxflags> property to force options such
#       as "-V3.0.4" into the g++ command line: "-sGXX=g++ -V3.0.4".
#
# GCC
#       Similar to GXX, the name by which gcc is invoked for "C"
#       language targets.

# singleton variables...
set-as-singleton GCC_ROOT_DIRECTORY GCC_BIN_DIRECTORY GCC_INCLUDE_DIRECTORY GCC_STDLIB_DIRECTORY ;

flags darwin GCC_BIN_DIRECTORY : $(GCC_BIN_DIRECTORY) ;
flags darwin GCC_INCLUDE_DIRECTORY : $(GCC_INCLUDE_DIRECTORY) ;
flags darwin GCC_STDLIB_DIRECTORY : $(GCC_STDLIB_DIRECTORY) ;

if ! $(GCC_BIN_DIRECTORY) { flags darwin GCC_BIN_DIRECTORY : $(GCC_ROOT_DIRECTORY)/bin/ ; }
if ! $(GCC_BIN_DIRECTORY) { flags darwin GCC_BIN_DIRECTORY : "" ; }
if ! $(GCC_STDLIB_DIRECTORY) { flags darwin GCC_STDLIB_DIRECTORY : $(GCC_ROOT_DIRECTORY)/lib ; }

flags darwin .GCC_BIN_DIR : $(GCC_BIN_DIRECTORY) ;
flags darwin .GXX : $(GXX) ;
flags darwin .GCC : $(GCC) ;

if ! $(.GXX) && $(GCC_ROOT_DIRECTORY) { flags darwin .GXX : g++ ; }
if ! $(.GXX) { flags darwin .GXX : c++ ; }
if ! $(.GCC) && $(GCC_ROOT_DIRECTORY) { flags darwin .GCC : gcc ; }
if ! $(.GCC) { flags darwin .GCC : cc ; }

flags darwin CFLAGS <cflags> ;
flags darwin C++FLAGS <cxxflags> ;
flags darwin DEFINES <define> ;
flags darwin UNDEFS <undef> ;
flags darwin HDRS <include> ;
flags darwin SYSHDRS <sysinclude> ;
flags darwin LIBPATH <library-path> ;
flags darwin NEEDLIBS <library-file> ;
flags darwin FINDLIBS <find-library> ;
flags darwin ARFLAGS <arflags> ;
flags darwin TARGET_TYPE <target-type> ;
flags darwin FRAMEWORKS <framework> ;
flags darwin DLLVERSION <dllversion> ;
flags darwin DLLVERSION : $(DLLVERSION[1]) ;
flags darwin BUNDLE_LOADER <bundle-loader> ;
flags darwin ARFLAGS ;

if ! $(ARFLAGS) { flags darwin ARFLAGS : "" ; }
if ! $(DLLVERSION) { flags darwin DLLVERSION : $(BOOST_VERSION) ; }

if ! [ MATCH "(gcc)" : $(.GCC) ]
{
    flags darwin CFLAGS : -Wno-long-double -no-cpp-precomp ;
}
# GCC 4.0, the default compiler in Darwin 8.0.0, does not have
# -fcoalesce-templates.  GCC 3.3 needs it.
if ! [ MATCH "(g[+][+])" : $(.GXX) ] && $(JAMUNAME[3]) < "8.0.0" ||
    [ MATCH "(g[+][+]-3.3)" : $(.GXX) ]
{
    flags darwin C++FLAGS : -fcoalesce-templates ;
}
flags darwin LINKFLAGS <runtime-link>static : -static-libgcc ;
flags darwin CFLAGS <debug-symbols>on : -g ;
flags darwin LINKFLAGS <debug-symbols>on : -g ;
flags darwin LINKFLAGS <debug-symbols>off : -Wl,-x ;
flags darwin CFLAGS <optimization>off : -O0 ;
flags darwin CFLAGS <optimization>speed : -O3 ;
flags darwin CFLAGS <optimization>space : -Os ;
flags darwin CFLAGS <inlining>off : -fno-inline ;
flags darwin CFLAGS <inlining>on : -Wno-inline ;
flags darwin CFLAGS <inlining>full : -finline-functions -Wno-inline ;
flags darwin CFLAGS <profiling>on : -pg ;
flags darwin LINKFLAGS <profiling>on : -pg ;
flags darwin C++FLAGS <rtti>off : -fno-rtti ;
flags darwin C++FLAGS <vtable-thunks>on : -fvtable-thunks ;
flags darwin C++FLAGS <vtable-thunks>off : -fvtable-thunks=0 ;
flags darwin CFLAGS <shared-linkable>true : -fPIC ;
flags darwin CFLAGS <warnings>on : -Wall ;
flags darwin CFLAGS <warnings>off : -w ;

flags darwin LINK_FORMAT <target-type>$(SHARED_TYPES)/<link-format>bundle : bundle ;
flags darwin LINK_FORMAT <target-type>$(SHARED_TYPES)/<link-format>dynamic : dynamic ;
if $(BUNDLE_LOADER) && ! $(LINK_FORMAT)
{
    flags darwin LINK_FORMAT <target-type>$(SHARED_TYPES) : bundle ;
}

if $(LINK_FORMAT) = bundle
{
    flags darwin LINKFLAGS <target-type>$(SHARED_TYPES) :
        -bundle ;
}
else
{
#    flags darwin LINKFLAGS <target-type>$(SHARED_TYPES) :
#        -Wl,-dynamic -nostartfiles -Wl,-dylib -Wl,-ldylib1.o ;
}

flags darwin .LINKFLAGS <linkflags> ;
flags darwin DLLFLAGS : ;
if -bind_at_load in $(.LINKFLAGS)
{
    flags darwin DLLFLAGS <target-type>$(SHARED_TYPES) : -bind_at_load ;
    .LINKFLAGS = [ difference $(.LINKFLAGS) : -bind_at_load ] ;
}
flags darwin LINKFLAGS : $(.LINKFLAGS) ;


#### Link ####

rule Link-action
{
    _ on $(<) = " " ;
    DEPENDS $(<) : $(NEEDLIBS) $(NEEDIMPS) ;
    if $(TARGET_TYPE) in $(SHARED_TYPES) && $(LINK_FORMAT) != bundle
    {
        #~ LINKFLAGS on $(<) +=
            #~ "-Wl,-dylib_compatibility_version,$(DLLVERSION) -W,l-dylib_current_version,$(DLLVERSION)" ;
        darwin-Link-DyLib-action $(<) : $(>) ;
    }
    else
    {
        darwin-Link-action $(<) : $(>) ;
    }
}

actions darwin-Link-action bind NEEDLIBS NEEDIMPS
{
    $(SHELL_SET)$(gSHELL_LIBPATH)=$(LINK_LIBPATH)
    $(SHELL_EXPORT)$(gSHELL_LIBPATH)
    $(.GCC_BIN_DIR)$(.GXX) $(LINKFLAGS) -o "$(<[1])" "$(>)" \
      -F$(FRAMEWORKS:D) -framework$(_)$(FRAMEWORKS:D=) \
      -L"$(LIBPATH:T)" -L"$(STDLIBPATH:T)" "$(NEEDLIBS)" "$(NEEDLIBS)" -l$(FINDLIBS) \
      -bundle_loader$(_)"$(BUNDLE_LOADER)" "$(BUNDLE_LOADER)"
}

actions darwin-Link-DyLib-action bind NEEDLIBS NEEDIMPS
{
    $(SHELL_SET)$(gSHELL_LIBPATH)=$(LINK_LIBPATH)
    $(SHELL_EXPORT)$(gSHELL_LIBPATH)
    ld -dynamic -m -r -d $(DLLFLAGS) -o "$(<[1]:S=.lo)" "$(>)" \
    && \
    $(.GCC_BIN_DIR)$(.GXX) $(LINKFLAGS) -o "$(<[1])" "$(<[1]:S=.lo)" \
      -F$(FRAMEWORKS:D) -framework$(_)$(FRAMEWORKS:D=) \
      -L"$(LIBPATH:T)" -L"$(STDLIBPATH:T)" "$(NEEDLIBS)" "$(NEEDLIBS)" -l$(FINDLIBS) -dynamiclib -install_name "$(<[1]:D=:S=.dylib)" \
    && \
    rm -f "$(<[1]:S=.lo)"
}

#### Cc #####

rule Cc-action
{
    _ on $(<) = " " ;
    darwin-Cc-action $(<) : $(>) ;
}

actions darwin-Cc-action
{
    $(.GCC_BIN_DIR)$(.GCC) -c -U$(UNDEFS) -D$(DEFINES) $(CFLAGS) -F$(FRAMEWORKS:D) -I"$(HDRS)" -I"$(STDHDRS)" -I"$(SYSHDRS)" -o "$(<)" "$(>)"
}

#### C++ ####
rule C++-action
{
    _ on $(<) = " " ;
    darwin-C++-action $(<) : $(>) ;
}

actions darwin-C++-action
{
    $(.GCC_BIN_DIR)$(.GXX) -c -ftemplate-depth-256 -U$(UNDEFS) -D$(DEFINES) $(CFLAGS) $(C++FLAGS) -F$(FRAMEWORKS:D) -I"$(HDRS)" -I"$(STDHDRS)" -I"$(SYSHDRS)" -o "$(<)" "$(>)"
}

#### Archive ####

rule Archive-action
{
    darwin-Archive-action $(<) : $(>) ;
}

actions updated together piecemeal darwin-Archive-action
{
    ar -r -s $(ARFLAGS) "$(<:T)" "$(>:T)"
}