#  Copyright (c) 2003 Michael Stevens
#  Copyright (c) 2011 Bryce Lelbach
#
#  Use, modification and distribution is subject to the Boost Software
#  License Version 1.0. (See accompanying file LICENSE_1_0.txt or
#  http://www.boost.org/LICENSE_1_0.txt)

import toolset ;
import feature ;
import toolset : flags ;

import intel ;
import gcc ;
import common ;
import errors ;
import generators ;
import type ;
import numbers ;

feature.extend-subfeature toolset intel : platform : linux ;

toolset.inherit-generators intel-linux 
     <toolset>intel <toolset-intel:platform>linux : gcc : gcc.mingw.link gcc.mingw.link.dll ;
generators.override intel-linux.prebuilt : builtin.lib-generator ;
generators.override intel-linux.prebuilt : builtin.prebuilt ;
generators.override intel-linux.searched-lib-generator : searched-lib-generator ;

# Override default do-nothing generators.
generators.override intel-linux.compile.c.pch   : pch.default-c-pch-generator   ;
generators.override intel-linux.compile.c++.pch : pch.default-cpp-pch-generator ;
 
type.set-generated-target-suffix PCH : <toolset>intel <toolset-intel:platform>linux : pchi ;

toolset.inherit-rules intel-linux : gcc ;
toolset.inherit-flags intel-linux : gcc 
        : <inlining>off <inlining>on <inlining>full
          <optimization>space <optimization>speed
          <warnings>off <warnings>all <warnings>on
        ;
        
if [ MATCH (--debug-configuration) : [ modules.peek : ARGV ] ]
{
    .debug-configuration = true ;
}
                       
# Initializes the intel-linux toolset
#   version in mandatory
#   name (default icpc) is used to invoke the specified intel-linux complier
#   compile and link options allow you to specify addition command line options for each version
rule init ( version ? :  command * : options * )
{
    local condition = [ common.check-init-parameters intel-linux
        : version $(version) ] ;
    
    if $(.debug-configuration)
    {
        ECHO "notice: intel-linux version is" $(version) ;
    }

    local default_path ;

    # Intel C++ Composer XE 2011 for Linux, aka Intel C++ Compiler XE 12.0,
    # aka intel-linux-12.0. In this version, Intel thankfully decides to install
    # to a sane 'intel' folder in /opt.
    if [ MATCH "(12[.]0|12)" : $(version) ]
        { default_path = /opt/intel/bin ; }
    # Intel C++ Compiler 11.1. 
    else if [ MATCH "(11[.]1)" : $(version) ]
        { default_path = /opt/intel_cce_11.1.064.x86_64/bin ; }
    # Intel C++ Compiler 11.0. 
    else if [ MATCH "(11[.]0|11)" : $(version) ]
        { default_path = /opt/intel_cce_11.0.074.x86_64/bin ; }
    # Intel C++ Compiler 10.1. 
    else if [ MATCH "(10[.]1)" : $(version) ]
        { default_path = /opt/intel_cce_10.1.013_x64/bin ; }
    # Intel C++ Compiler 9.1. 
    else if [ MATCH "(9[.]1)" : $(version) ]
        { default_path = /opt/intel_cc_91/bin ; }
    # Intel C++ Compiler 9.0. 
    else if [ MATCH "(9[.]0|9)" : $(version) ]
        { default_path = /opt/intel_cc_90/bin ; }
    # Intel C++ Compiler 8.1. 
    else if [ MATCH "(8[.]1)" : $(version) ]
        { default_path = /opt/intel_cc_81/bin ; }
    # Intel C++ Compiler 8.0 - this used to be the default, so now it's the
    # fallback. 
    else 
        { default_path = /opt/intel_cc_80/bin ; }
            
    if $(.debug-configuration)
    {
        ECHO "notice: default search path for intel-linux is" $(default_path) ;
    }

    command = [ common.get-invocation-command intel-linux : icpc 
        : $(command) : $(default_path) ] ;
                
    common.handle-options intel-linux : $(condition) : $(command) : $(options) ;

    gcc.init-link-flags intel-linux gnu $(condition) ;
    
    local root = [ feature.get-values <root> : $(options) ] ;
    local bin ;
    if $(command) || $(root)
    {
        bin ?= [ common.get-absolute-tool-path $(command[-1]) ] ;
        root ?= $(bin:D) ;
        
        local command-string = $(command:J=" ") ;
        local version-output = [ SHELL "$(command-string) --version" ] ;
        local real-version = [ MATCH "([0-9.]+)" : $(version-output) ] ;
        local major = [ MATCH "([0-9]+).*" : $(real-version) ] ;
        
        # If we failed to determine major version, use the behaviour for
        # the current compiler.
        if $(major) && [ numbers.less $(major) 10 ]
        {
            flags intel-linux.compile OPTIONS $(condition)/<inlining>off : "-Ob0" ;
            flags intel-linux.compile OPTIONS $(condition)/<inlining>on : "-Ob1" ;
            flags intel-linux.compile OPTIONS $(condition)/<inlining>full : "-Ob2" ;            
            flags intel-linux.compile OPTIONS $(condition)/<optimization>space : "-O1" ;
            flags intel-linux.compile OPTIONS $(condition)/<optimization>speed : "-O3 -ip" ;
        }
        else if $(major) && [ numbers.less $(major) 11 ]
        {
            flags intel-linux.compile OPTIONS $(condition)/<inlining>off : "-inline-level=0" ; 
            flags intel-linux.compile OPTIONS $(condition)/<inlining>on : "-inline-level=1" ; 
            flags intel-linux.compile OPTIONS $(condition)/<inlining>full : "-inline-level=2" ;                
            flags intel-linux.compile OPTIONS $(condition)/<optimization>space : "-O1" ;
            flags intel-linux.compile OPTIONS $(condition)/<optimization>speed : "-O3 -ip" ;
        }
        else # newer version of intel do have -Os (at least 11+, don't know about 10)
        {                        
            flags intel-linux.compile OPTIONS $(condition)/<inlining>off : "-inline-level=0" ; 
            flags intel-linux.compile OPTIONS $(condition)/<inlining>on : "-inline-level=1" ; 
            flags intel-linux.compile OPTIONS $(condition)/<inlining>full : "-inline-level=2" ;                
            flags intel-linux.compile OPTIONS $(condition)/<optimization>space : "-Os" ;
            flags intel-linux.compile OPTIONS $(condition)/<optimization>speed : "-O3 -ip" ;
        }        
           
        if $(root)
        {
            # Libraries required to run the executable may be in either
            # $(root)/lib (10.1 and earlier) 
            #     or 
            # $(root)/lib/architecture-name (11.0 and later:
            local lib_path = $(root)/lib $(root:P)/lib/$(bin:B) ;
            if $(.debug-configuration)
            {
                ECHO notice: using intel libraries :: $(condition) :: $(lib_path) ;
            }
            flags intel-linux.link RUN_PATH $(condition) : $(lib_path) ;
        }   
    }
}

SPACE = " " ;

flags intel-linux.compile OPTIONS <warnings>off : -w0 ;
flags intel-linux.compile OPTIONS <warnings>on : -w1 ;
flags intel-linux.compile OPTIONS <warnings>all : -w2 ;

rule compile.c++ ( targets * : sources * : properties * )
{
    DEPENDS $(<) : [ on $(<) return $(PCH_FILE) ] ;
}

actions compile.c++ bind PCH_FILE
{
    "$(CONFIG_COMMAND)" -c -xc++ $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(INCLUDES)"  -use-pch"$(PCH_FILE)" -c -o "$(<)" "$(>)"
}

rule compile.c ( targets * : sources * : properties * )
{
    DEPENDS $(<) : [ on $(<) return $(PCH_FILE) ] ;
}

actions compile.c bind PCH_FILE
{
    "$(CONFIG_COMMAND)" -c -xc $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -use-pch"$(PCH_FILE)" -c -o "$(<)" "$(>)"
}

rule compile.c++.pch ( targets * : sources * : properties * )
{
}
#
# Compiling a pch first deletes any existing *.pchi file, as Intel's compiler
# won't over-write an existing pch: instead it creates filename$1.pchi, filename$2.pchi
# etc - which appear not to do anything except take up disk space :-(
#
actions compile.c++.pch
{
    rm -f "$(<)" && "$(CONFIG_COMMAND)" -x c++-header $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -pch-create "$(<)" "$(>)"
}

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

rule compile.c.pch ( targets * : sources * : properties * )
{
}

actions compile.c.pch
{
    rm -f "$(<)" && "$(CONFIG_COMMAND)" -x c-header $(OPTIONS) $(USER_OPTIONS) -D$(DEFINES) -I"$(INCLUDES)" -c -pch-create "$(<)" "$(>)"
}

rule link ( targets * : sources * : properties * )
{
    SPACE on $(targets) = " " ;
    JAM_SEMAPHORE on $(targets) = <s>intel-linux-link-semaphore ;
}

actions link bind LIBRARIES
{
    "$(CONFIG_COMMAND)" -L"$(LINKPATH)" -Wl,-R$(SPACE)-Wl,"$(RPATH)" -Wl,-rpath-link$(SPACE)-Wl,"$(RPATH_LINK)" -o "$(<)" "$(>)" "$(LIBRARIES)" -l$(FINDLIBS-SA) -l$(FINDLIBS-ST) $(OPTIONS) $(USER_OPTIONS)
}

rule link.dll ( targets * : sources * : properties * )
{
    SPACE on $(targets) = " " ;
    JAM_SEMAPHORE on $(targets) = <s>intel-linux-link-semaphore ;
}

# Differ from 'link' above only by -shared.
actions link.dll bind LIBRARIES
{
    "$(CONFIG_COMMAND)" -L"$(LINKPATH)" -Wl,-R$(SPACE)-Wl,"$(RPATH)" -o "$(<)" -Wl,-soname$(SPACE)-Wl,$(<[1]:D=) -shared "$(>)"  "$(LIBRARIES)" -l$(FINDLIBS-SA) -l$(FINDLIBS-ST) $(OPTIONS) $(USER_OPTIONS)
}