makefile

##############################################################
# 
# Copyright (c) 2010-2014 Simon Southwell
# 
# Date: 18th January 2010
# 
# This file is part of JFIF.
#
# JFIF 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.
#
# JFIF 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 JFIF. If not, see <http://www.gnu.org/licenses/>.
# 
##############################################################
# Makefile for jfif, for both linux and MinGW/Cygwin (Windows)
#
# Options:
#
# SLOWIDCT=yes|no     Compile with slow integer algorithm (default no)
# FLOATIDCT=yes|no    Compile slow algorithm with floating point (SLOWIDCT=yes only, default no)
# DEBUGMODE=yes|no    Include debug features (default no)
#
##############################################################

# By default, compiling for fast iDCT. Use "make SLOWIDCT=yes"
# if slow idct (optionally floating point) required

SLOWIDCT           = no

# Set FLOATIDCT=yes for floating point iDCT (ignored when SLOWIDCT=no)

FLOATIDCT          = no

# Set DEBUGMODE=yes for compilation with debug featured (adds -D option)

DEBUGMODE          = no

OBJSFX             = o
BUILDDIR           = ./build
SRCDIR             = ./src

OSTYPE:=$(shell uname -s)

ifeq (${OSTYPE},Linux)
  GTKBINDIR        = /usr/bin
else
  GTKBINDIR        = C:/Tools/gtk+/bin
endif

# Targets to build

EXETARGET          = ${BUILDDIR}/jfif
LIBTARGET          = ${BUILDDIR}/libjfif.a

# All the include files

INCLFILES          = ${SRCDIR}/jfif.h            \
                     ${SRCDIR}/jfif_idct.h       \
                     ${SRCDIR}/jfif_class.h      \
                     ${SRCDIR}/jfif_local.h      \
                     ${SRCDIR}/jfif_gtk.h        \
                     ${SRCDIR}/bitmap.h          \
                     ${SRCDIR}/jpeg_dct_cos.h

# Define some compile variables based on the SLOWIDCT and FLOATIDCT settings

ifeq (${SLOWIDCT}, no)
  ifeq (${FLOATIDCT}, no)
    IDCTCFLAG      = -DJPEG_FAST_INT_IDCT
  else
    IDCTCFLAG      = 
  endif
else
  IDCTCFLAG        = -DJPEG_DCT_INTEGER
endif

# All the object files
OBJMAIN            = obj/jfif_main.${OBJSFX}
OBJFILES           = obj/jfif.${OBJSFX}          \
                     obj/jfif_gtk.${OBJSFX}      \
                     obj/jfif_idct.${OBJSFX}

# Select if to compile with verbose debug output, based on DEBUGMODE,
# which adds the "-D<debug mask> option"

ifeq (${DEBUGMODE}, no)
  DEFDEBUG         = 
else
  DEFDEBUG         = -DJPEG_DEBUG_MODE
endif

# Swap over (or override on the cmd line) for debug symbol compilation
#COMMOPTS    = -g 
COMMOPTS           = -ffast-math -finline-functions -funroll-loops -O4

# Use the GNU compiler

CC                 = gcc
CPP                = g++

# Default pre-processor definitions

DEFINES            = ${IDCTCFLAG}                \
                     ${DEFDEBUG}

# C compilation flags
CFLAGS             = ${COMMOPTS} -I${SRCDIR} ${DEFINES} $(shell ${GTKBINDIR}/pkg-config --cflags gtk+-2.0)

# In MinGW/Cygwin, the pkg-config command *must* be the last on the line, 
# (more specifically, the ` characters) so the link rule must reflect this.

LDFLAGS            = $(shell ${GTKBINDIR}/pkg-config --libs gtk+-2.0)
LDLIBS             = 

##########################################################
# Dependency definitions
##########################################################

all: ${EXETARGET} ${LIBTARGET}

##########################################################
# Linking rules
##########################################################
#
# Remember: don't move ${LDFLAGS} from being last, for 
# MinGW/Cygwin
#

${EXETARGET}: ${OBJMAIN} ${OBJFILES} makefile
	@${CPP} ${OBJMAIN} ${OBJFILES} -o $@ ${LDLIBS} ${LDFLAGS}

${LIBTARGET}: ${OBJFILES} makefile
	@ar -c -r $@ ${OBJFILES}

##########################################################
# Compilation rules
##########################################################

#
# Dependencies not optimal for includes, but
# a generic and concise rule instead.
#
obj/%.${OBJSFX} : ${SRCDIR}/%.c ${INCLFILES} makefile
	@${CC} -c $< -o $@ ${CFLAGS}

obj/%.${OBJSFX} : ${SRCDIR}/%.cpp ${INCLFILES} makefile
	@${CPP} -c $< -o $@ ${CFLAGS}

##########################################################
# Clean up rules
##########################################################

.PHONY : clean
clean:
	@rm -f ${EXETARGET} ${EXETARGET}.exe ${LIBTARGET} obj/*.${OBJSFX}