# Makefile for Info-ZIP's UnZip, UnZipSFX and fUnZip using DJGPP v2.01 or
# higher, by Frank Donahoe.                      Last updated: 21 Jul 2008

# This Makefile is specifically tailored for GNU make and GNU C and
# may not work with a generic Unix-compatible make utility.  The latest
# make version is 3.78.1.  Thanks to Eli Zaretskii for generously responding
# to questions with advice on the changes needed to make install work under
# DJGPP version 2.0x.
# Features used:
# - pattern rules (%.o : %.c, etc.)
# - GNU-specific conditionals and functions  (ifeq, $(patsubst,,),...)
# - simply expanded variables (VAR := text)
#
# The stand-alone executable requires DPMI services to run.  If running
# in a DOS window under Windows 3.1 or later, the dpmi server is auto-
# matically present.  Under DOS, if a DPMI server is not loaded, the
# program will look for "cwsdpmi.exe."  If found, it will be loaded for
# the duration of the program.
#
# cwsdpmi is a "free" dpmi server written by Charles W. Sandmann
# (sandman@clio.rice.edu).  It may be found, among other sites, on SimTel
# Net at the URL:
#
#   ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2misc/csdpmi?[b,s].zip
#
# and on its mirrors worldwide.  The latest version as of this writing is 5.
# Archives with the b postscript contain the binaries.  An alternate server
# is found, l.c., in the archive pmode??[b,s].zip.  The latest (20001022) is
# v1.3.

# Separators colon and <sp> are used in Unix, semi-colon and <sp> in DOS.
VPATH=. msdos

ifdef NOASM
USE_ASMCRC=
else
USE_ASMCRC=1
endif

.PHONY : clean install uninstall

# UnZip flags
# LOCAL_UNZIP may be set in "AUTOEXEC.BAT" or defined in "djgpp.env" under
# [make] as in the example below.  Or, if you habitually work in a DOS box
# under Windows9x, right click on the MS-DOS icon, select properties, then
# program, to find a slot called batch file, where you may specify the path
# to a file which will set the variables of choice every time the box is
# opened.
# See, for example, DOSWILD, in the file INSTALL.

# [make]
# +BUTT=-mcpu=pentiumpro
# +LOC=-W -Wall
# +LOCAL_UNZIP=-DUSE_UNSHRINK

# BUTT may be defined to specify the target system.  With gcc v2.95,
# optimizing options like "-mcpu=pentiumpro -march=pentiumpro" are supported,
# but the traditional "-m386" and "-m486" options of previous gcc 2.x
# version will continue to work.
# So if you are in the habit of compiling from source, programs for your
# own use, it is well to consult gcc's manual for options suitable to
# your processer and to set BUTT accordingly.  Consult INSTALL for
# LOCAL_UNZIP.

LOC=
CC=gcc
LD=$(CC)
CPPFLAGS=-I. $(INC_BZ2LIB) -DDOS -DUSE_VFAT $(ASMFLG) $(LOCAL_UNZIP) $(LOC)
ASFLAGS=$(CPPFLAGS)
CFLAGS=-Wall -O2 $(BUTT) $(CPPFLAGS)

# See INSTALL for discussion of SFX_EXDIR.
# EXDIR=-DSFX_EXDIR

FUN_FLAGS=$(CFLAGS) -DFUNZIP

# Include OFP for a modest decrease in size of unzipsfx.exe.
OFP=-fomit-frame-pointer

SFX_FLAGS=-Wall -O2 $(CPPFLAGS) -DSFX $(EXDIR) $(OFP)
LDFLAGS=-s

# general-purpose stuff
# If cp.exe is not found change to CP=copy /Y    .
CP = cp -fp
# If install.exe is not found change to INSTALL=$(CP)   .  To prevent a
# conflict with any of the many different "install's" that might be found
# in the path, GNU install will be called as `ginstall'.  This also bypasses
# a stub bug that cropped up with the install from fil316b.zip.
INSTALL=ginstall
# The default value of RM is "rm -f"  .  If rm.exe is not found, uncomment
# the following:
# RM=del
# Laszlo Molnar who wrote DJ Packer and Markus F. X. J. Oberhumer who wrote
# the compression library used by the DJ Packer have collaborated on the
# Ultimate Packer for eXecutables, which has recently been released.  Look
# for upx???d.zip at     http://upx.sourceforge.net/
# As an alternative, look for "djp.exe", now two years old, in the archive
# mlp107[b,s].zip, found in the same location as csdpmi?[b,s].zip (see above).
# Do not add the option -s to djp.exe without making the required changes
# to the target zipinfo$E.  Uncomment the three lines beginning with $(DJP)
# or $(DJPSX).

#DJP = djp -q
#DJPSX = djp -q -s
DJP = upx -qq --best
DJPSX = $(DJP)
E = .exe
O = .o
M=msdos

# defaults for crc32 stuff and system dependent headers
ifdef USE_ASMCRC
ASMFLG = -DASM_CRC
CRCA_O = crc_gcc$O
else
ASMFLG =
CRCA_O =
endif

# optional inclusion of bzip2 decompression
IZ_BZIP2 = bzip2
ifdef USEBZ2
INC_BZ2LIB = -I$(IZ_BZIP2)
LOCAL_UNZIP:=-DUSE_BZIP2 $(LOCAL_UNZIP)
LD_BZ2LIB = -L$(IZ_BZIP2) -lbz2
LIBBZIP2 = $(IZ_BZIP2)/libbz2.a
else
INC_BZ2LIB =
LD_BZ2LIB =
LIBBZIP2 =
endif

# object files
OBJS1 = unzip$O crc32$O $(CRCA_O) crypt$O envargs$O explode$O
OBJS2 = extract$O fileio$O globals$O inflate$O list$O match$O
OBJS3 = process$O ttyio$O ubz2err$O unreduce$O unshrink$O zipinfo$O
OBJS = $(OBJS1) $(OBJS2) $(OBJS3) $M$O

OBJX = unzipsfx$O crc32_$O $(CRCA_O) crypt_$O extract_$O fileio_$O \
	globals_$O inflate_$O match_$O process_$O ttyio_$O ubz2err_$O $M_$O

OBJF = funzip$O crc32-$O $(CRCA_O) crypt-$O globals-$O inflate-$O ttyio-$O

OBJECTS_ALL = $(sort $(OBJS) $(OBJX) $(OBJF) crc_gcc$O)

# Common header files included by all C sources:
UNZIP_H = unzip.h unzpriv.h globals.h msdos/doscfg.h

# executable files
UNZIPS = unzip$E zipinfo$E funzip$E unzipsfx$E

# pattern rules to compile the sources:
%$O : %.c
	$(CC) $(CFLAGS) -c $< -o $@

%-$O: %.c
	$(CC) $(FUN_FLAGS) -c $< -o $@

%_$O: %.c
	$(CC) $(SFX_FLAGS) -c $< -o $@

%sfx$O: %.c
	$(CC) $(SFX_FLAGS) -c $< -o $@

all: unzips

unzips:	unzip$E zipinfo$E funzip$E unzipsfx$E

unzip$E: $(OBJS) $(LIBBZIP2)
	$(LD) $(LDFLAGS) $(OBJS) $(LD_BZ2LIB) -o $@
#	$(DJP) $@

zipinfo$E: unzip$E
	stubify -g $@
	stubedit $@ runfile=unzip argv0=zipinfo

funzip$E: $(OBJF)
	$(LD) $(LDFLAGS) $(OBJF) -o $@
#	$(DJP) $@

unzipsfx$E: $(OBJX)
	$(LD) $(LDFLAGS) $(OBJX) -o $@
#	$(DJPSX) $@

# create/update the library for the optional bzip2 support:
$(IZ_BZIP2)/libbz2.a:
	$(MAKE) -C $(IZ_BZIP2) -f Makebz2.iz CC="$(CC)" RM="$(RM)"

# explicit compilation instructions:

crc_gcc$O: crc_i386.S		# 32bit, GNU AS
	$(CC) $(ASFLAGS) -x assembler-with-cpp -c -o $@ $<

# BIN_PATH may be defined in djgpp.env [make] or defined below.  If the
# installation is to the directory containing gcc.exe etc. place the
# following in djgpp.env:

# [make]
# +BIN_PATH=%\DJDIR%\bin

# Even if so placed, it can be over-ridden here by, say:
# BIN_PATH=c:\usr\bin

install:
	-@if not exist $(BIN_PATH)\nul mkdir $(BIN_PATH)
	command.com /c for %f in ($(UNZIPS)) do $(INSTALL) %f $(BIN_PATH) > NUL

uninstall:
	command.com /c for %f in ($(UNZIPS)) do $(RM) $(BIN_PATH)\%f > NUL

clean:
	$(MAKE) -C $(IZ_BZIP2) -f Makebz2.iz CC="$(CC)" RM="$(RM)" clean
ifeq ($(firstword $(RM)), del)
	$(RM) *$O
	$(RM) *.~
	$(RM) *.exe
else
	$(RM) $(OBJECTS_ALL) *.~ *.exe
endif

# Source dependencies:
crc_gcc$O:      crc_i386.S
crc32$O:        crc32.c $(UNZIP_H) zip.h crc32.h
crc32-$O:       crc32.c $(UNZIP_H) zip.h crc32.h
crc32_$O:       crc32.c $(UNZIP_H) zip.h crc32.h
crypt$O:        crypt.c $(UNZIP_H) zip.h crypt.h crc32.h ttyio.h
crypt-$O:       crypt.c $(UNZIP_H) zip.h crypt.h crc32.h ttyio.h
crypt_$O:       crypt.c $(UNZIP_H) zip.h crypt.h crc32.h ttyio.h
envargs$O:      envargs.c $(UNZIP_H)
explode$O:      explode.c $(UNZIP_H)
extract$O:      extract.c $(UNZIP_H) crc32.h crypt.h
extract_$O:     extract.c $(UNZIP_H) crc32.h crypt.h
fileio$O:       fileio.c $(UNZIP_H) crc32.h crypt.h ttyio.h ebcdic.h
fileio_$O:      fileio.c $(UNZIP_H) crc32.h crypt.h ttyio.h ebcdic.h
funzip$O:       funzip.c $(UNZIP_H) crc32.h crypt.h ttyio.h
globals$O:      globals.c $(UNZIP_H)
globals-$O:     globals.c $(UNZIP_H)
globals_$O:     globals.c $(UNZIP_H)
inflate$O:      inflate.c inflate.h $(UNZIP_H)
inflate-$O:     inflate.c inflate.h $(UNZIP_H) crypt.h
inflate_$O:     inflate.c inflate.h $(UNZIP_H)
list$O:         list.c $(UNZIP_H)
match$O:        match.c $(UNZIP_H)
match_$O:       match.c $(UNZIP_H)
msdos$O:        msdos/msdos.c $(UNZIP_H)
msdos_$O:       msdos/msdos.c $(UNZIP_H)
process$O:      process.c $(UNZIP_H) crc32.h
process_$O:     process.c $(UNZIP_H) crc32.h
ttyio$O:        ttyio.c $(UNZIP_H) zip.h crypt.h ttyio.h
ttyio-$O:       ttyio.c $(UNZIP_H) zip.h crypt.h ttyio.h
ttyio_$O:       ttyio.c $(UNZIP_H) zip.h crypt.h ttyio.h
ubz2err$O:      ubz2err.c $(UNZIP_H)
ubz2err_$O:     ubz2err.c $(UNZIP_H)
unreduce$O:     unreduce.c $(UNZIP_H)
unshrink$O:     unshrink.c $(UNZIP_H)
unzip$O:        unzip.c $(UNZIP_H) crypt.h unzvers.h consts.h
unzipsfx$O:     unzip.c $(UNZIP_H) crypt.h unzvers.h consts.h
zipinfo$O:      zipinfo.c $(UNZIP_H)