# ******************************************************************************
# Copyright 2009, Freie Universitaet Berlin (FUB). All rights reserved.
# 
# These sources were developed at the Freie Universitaet Berlin, Computer
# Systems and Telematics group (http://cst.mi.fu-berlin.de).
# ------------------------------------------------------------------------------
# This file is part of FeuerWare.
# 
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
# 
# FeuerWare is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License along with
# this program.  If not, see http://www.gnu.org/licenses/ .
# ------------------------------------------------------------------------------
# For further information and questions please use the web site
# 	http://scatterweb.mi.fu-berlin.de
# and the mailinglist (subscription via web site)
# 	scatterweb@lists.spline.inf.fu-berlin.de
# ******************************************************************************
# $Id$

#
# OS specifics
#
if $(NT) {
	POSIXSHELL = sh ;
	NULLDEV = NUL ;
	CAT = type ;
	NOARSCAN = true ;
	
	# redefine build rules for gcc on NT
	SUFOBJ = .o ;
	SUFLIB = .a ;
	actions As
	{
		$(AS) $(ASFLAGS) $(ASHDRS) -o $(<) $(>)
	}
	actions Cc
	{
		$(CC) -c -o $(<) $(CCFLAGS) -D$(MODULE_DEFINES) $(CCDEFS) $(CCHDRS) $(>)
	}
	rule FDefines { return -D$(<) ; }
	rule FIncludes { return -I$(<) ; }	
	
} else {
	NULLDEV = /dev/null ;
	CAT = cat ;
    RM = rm -rf ;
	
	# use english language output for gcc
	actions Cc
	{
		LANG=C $(CC) -c -o $(<) $(CCFLAGS) -D$(MODULE_DEFINES) $(CCDEFS) $(CCHDRS) $(>)
	}
	
	switch $(OS) {
	case CYGWIN :
		# archive scanning does not work on cygwin, so leave object files
		NOARSCAN = true ;
	}
}

#
# Plausbility checks and defaults
#
SUFEXE = .elf ;

#
# Rules and Actions
#

#
# Concatenates path-segments into a OS specific path string
# Usage: PATH = [ FPath path-segments ] ;
rule FPath
{
	return $(<:J=$(SLASH)) ;
}

#
# Generate object archive
actions updated together piecemeal Archive
{
    $(AR) $(ARFLAGS) $(<) $(>)
}

#
# Link target
rule Link
{
	# add map file
	Clean clean : $(<:S=.map) ;
	# generation of hex file
	Hexfile $(<:S=.hex) : $(<) ;
}
actions Link bind NEEDLIBS
{
	echo "Old firmware size:"
	$(TOOLCHAIN)size $(<) 2> $(NULLDEV) || echo "  No old binary for size comparison..."
	
	$(LINK) $(LINKFLAGS) -o $(<) $(UNDEFS) $(>) -Wl,--start-group $(NEEDLIBS) $(LINKLIBS) -lm -Wl,--end-group -Wl,-Map=$(<:S=.map) || $(RM) -f $(<) $(<:S=.map) $(<:S=.hex)
	
	echo "New firmware size:"
    $(TOOLCHAIN)size $(<)
}

#
# Clean binaries
actions piecemeal together existing Clean
{
	# remove all jam targets
	$(RM) $(>)
}

#
# Clean binaries regardless of project and board
rule Cleanall { }
actions Cleanall
{
	echo "> Cleaning binaries"
	$(RM) bin$(SLASH)*
	make -C $(TOP)$(SLASH)doc clean
}

#
# Display usage text from manual
rule Help { }
actions Help
{
	$(CAT) $(TOP)$(SLASH)doc$(SLASH)src$(SLASH)manual$(SLASH)examples$(SLASH)jam-usage.txt
}

#
# Compile documentation
rule Doc { }
actions Doc
{
	make -C $(TOP)$(SLASH)doc all
}

#
# Generate hex-file from binary
rule Hexfile
{
	MakeLocate $(<) : $(LOCATE_TARGET) ;
	Depends $(<) : $(>) ;
	SEARCH on $(>) = $(LOCATE_TARGET) ;
	Clean clean : $(<) ;
}
actions Hexfile
{
	$(OBJCOPY) -O ihex $(>) $(<)
}

#
# Program binary to target device
rule Flash
{
    Depends $(<) : $(>) ;
}
actions Flash
{
    $(FLASHER) $(FLASHFLAGS) $(>)
}

# Reset connected sensor node
actions Reset
{
    $(RESET) > /dev/null 2>&1 
}

#
# Run debug server
rule Debug
{
    Depends $(<) : $(>) ;
}
actions Debug
{
    $(GDB) $(GDBFLAGS) $(>)
}

#
# Rules for convenient module building & dependency tracking
rule Module
{
    local _m = $(<:S=$(SUFLIB)) ;
    
#    echo Module Name: $(<) Files: $(>) Dependencies: $(3) ;
    
    DEFINED_MODULES += $(_m) ;
    
	ModuleFromObjects $(<) : $(>:S=$(SUFOBJ)) ;
	ObjectsNoDep $(>) ;    
   
    ModuleDepends $(_m) : $(3) ;
    
    if $(_m) in $(USE_MODULES) {
        UseModule $(_m) ;
    }
}

# Add a pre-built library as module
# Syntax: BinModule <Module Name = $(<)> ;
rule BinModule
{
    local _m = $(<:S=$(SUFLIB)) ;
    
    DEFINED_MODULES += $(_m) ;
    BINARY_MODULES += $(_m) ;
    
    ModuleDepends $(_m) : $(3) ;
    
    if $(_m) in $(USE_MODULES) {
        UseModule $(_m) ;
    }
}

rule ModuleDepends
{
    local _m = $(<:S=$(SUFLIB)) ;
    local _d = $(>:S=$(SUFLIB)) ;
   
#   for DEP in $(_d) {
            Depends $(_m) : $(_d) ;
            DEPENDS.$(_m) += $(_d) ;
#   }
}

rule UseModule
{
    local _m = $(<:S=$(SUFLIB)) ;
   	
    if $(_m) in $(BINARY_MODULES) {
        local _l _s ;
        _l = $(<:S=$(SUFLIB)) ;						# name of the library file
        _s = [ FGristFiles $(_l) ] ;				# source
        MakeLocate $(_l) : $(LOCATE_TARGET) ;		# locate to bin directory
        File $(TARGET_DIR)/$(_l) : $(_s) ;
    }

#    echo UseModule $(<) ;
    if ! $(_m) in $(DEFINED_MODULES) {
#        echo Module not defined yet. ;
        USE_MODULES += $(_m) ;
    } else {
        LinkLibraries $(TARGET) : $(<) ;
        local _mdefine = MODULE_$(_m:S=:U) ;
        if ! $(_mdefine) in $(MODULE_DEFINES) {
            MODULE_DEFINES += $(_mdefine) ;
        }
#         echo Dependencies of $(_m): $(DEPENDS.$(_m)) ;
        for DEP in $(DEPENDS.$(_m)) {
            UseModule $(DEP) ;
        }
    }
}

# (slightly modified version of LibraryFromObjects)
rule ModuleFromObjects
{
    local _i _l _s ;

    # Add grist to file names

    _s = [ FGristFiles $(>) ] ;
    _l = $(<:S=$(SUFLIB)) ;

    # Set LOCATE for the library and its contents.  The bound
    # value shows up as $(NEEDLIBS) on the Link actions.
    # For compatibility, we only do this if the library doesn't
    # already have a path.

    if ! $(_l:D)
    {
        MakeLocate $(_l) $(_l)($(_s:BS)) : $(LOCATE_TARGET) ;
    }

    if $(NOARSCAN) 
    { 
        # If we can't scan the library to timestamp its contents,
        # we have to just make the library depend directly on the
        # on-disk object files.  

        Depends $(_l) : $(_s) ;
    }
    else
    {
        # If we can scan the library, we make the library depend
        # on its members and each member depend on the on-disk
        # object file.

        Depends $(_l) : $(_l)($(_s:BS)) ;

        for _i in $(_s)
        {
        Depends $(_l)($(_i:BS)) : $(_i) ;
        }
    }

    Clean clean : $(_l) ;

    if $(CRELIB) { CreLib $(_l) : $(_s[1]) ; }

    Archive $(_l) : $(_s) ;

    if $(RANLIB) { Ranlib $(_l) ; }

    # If we can't scan the library, we have to leave the .o's around.

    if ! ( $(NOARSCAN) || $(NOARUPDATE) ) { RmTemps $(_l) : $(_s) ; }
}

#
# Like Objects, but doesn't set dependencies on obj pѕeudotarget.
rule ObjectsNoDep
{
    local _i ;

    for _i in [ FGristFiles $(<) ]
    {
        Object $(_i:S=$(SUFOBJ)) : $(_i) ;
    }
}

actions ListModules {
    echo $(MODULE_DEFINES) | tr ' ' '\n' | sort
}

actions ShowFlags {
	echo "CCFLAGS: "
    echo $(CCFLAGS) $(CCDEFS) -D$(MODULE_DEFINES) | tr ' ' '\n  ' | sort
    echo "" | $(CC) -E -dD -
}