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# Makefile for Info-ZIP's unzip, zipinfo, funzip and unzipsfx
# using djgpp v1.12m4.  Tested with unzip540 by Christian Spieler
#
# This Makefile is specifically tailored for GNU Make and GNU C and
# may not work with a generic UNIX compatible Make utility.
# Features use:
# - pattern rules (%.o : %.c, etc.)
# - GNUMake conditionals and functions  (ifeq, $(patsubst,,),...)
#
# To allow mixed use of real mode (16bit) vs. GO32 (32bit protected mode)
# GNUMake utility and GCC driver, precautions have been taken to
# limit command lines to the DOS 126 bytes limit.
# In case you have an environment that supports long command lines
# at all "interface" levels (e.g.: DJGPPv1 Gmake 3.71 and GO32 gcc.exe),
# you may define the Makefile macro LONGARGS to take advantage of the
# "long command lines" capability.
# I have archived the fastest compilation (with LONGARGS support!) by
# using both a real mode gnumake (private port) and the real mode
# gcc.exe driver.
#
# The Makefile allows the optional creation of standalone exectutables.
# This has the advantage that unzip.exe does not rely on any other file,
# but results in much larger executables.
#

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

ifdef NOASM
USE_ASMCRC=
else
USE_ASMCRC=1
endif

# UnZip flags
LOC=-DDOS $(ASMFLG) $(LOCAL_UNZIP)
CC=gcc
LD=$(CC)
CPPFLAGS=-I. $(LOC)
ASFLAGS=$(CPPFLAGS)
CFLAGS=-Wall -O2 -m486 $(CPPFLAGS)
FUN_FLAGS=$(CFLAGS) -DFUNZIP
SFX_FLAGS=$(CFLAGS) -DSFX
LDFLAGS=-s -v
LIBS=-lpc

STRIP=strip

# Define the STANDALONE macro to create executables which can be
# used without any external extender file.
# >>> NOTE: Either copy the go32 extender into your build directory, or
# >>>       edit the STUBIFY macro and add the correct path to "go32.exe".
ifdef STANDALONE
STUBIFY=coff2exe -s go32.exe
else
STUBIFY=coff2exe
endif

# general-purpose stuff
# If cp.exe is not found change to CP=copy /Y    .
CP = cp -f
# If install.exe is not found change to INSTALL=$(CP)   .
INSTALL=install
# The default value of RM is "rm -f"  .  If rm.exe is not found, uncomment
# the following:
RM=del
E = .exe
O = .o
M=msdos

# defaults for crc32 stuff and system dependent headers
ifdef USE_ASMCRC
ASMFLG = -DASM_CRC
CRC32 = crc_gcc
else
ASMFLG =
CRC32 = crc32
endif

# object files
OBJS1 = unzip$O $(CRC32)$O crctab$O crypt$O envargs$O explode$O
OBJS2 = extract$O fileio$O globals$O inflate$O list$O match$O
OBJS3 = process$O ttyio$O unreduce$O unshrink$O zipinfo$O
OBJS = $(OBJS1) $(OBJS2) $(OBJS3) $M$O

OBJX1 = unzipsfx$O $(CRC32)$O crctab$O crypt$O extract_$O fileio$O globals$O
OBJX2 =	inflate$O match$O process_$O ttyio$O $M_$O
OBJX = $(OBJX1) $(OBJX2)

OBJF = funzip$O $(CRC32)$O crypt-$O globals-$O inflate-$O ttyio-$O

OBJECTS_ALL = $(sort $(OBJS) $(OBJX) $(OBJF) crc32$O 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)
ifdef LONGARGS
	$(LD) $(LDFLAGS) $(OBJS) $(LIBS) -o unzip
else
	echo $(OBJS1) > unzip.rsp
	echo $(OBJS2) >> unzip.rsp
	echo $(OBJS3) $M$O >> unzip.rsp
	echo $(LIBS) >> unzip.rsp
	$(LD) $(LDFLAGS) -o unzip @unzip.rsp
	$(RM) unzip.rsp
endif
	$(STRIP) unzip
	$(STUBIFY) unzip
	stubedit $@ globbing=no
	$(RM) unzip

zipinfo$E: unzip$E
	coff2exe -g zipinfo
	stubedit $@ runfile=unzip globbing=no

funzip$E: $(OBJF)
	$(LD) $(LDFLAGS) $(OBJF) -o funzip
	$(STRIP) funzip
	$(STUBIFY) funzip
	$(RM) funzip

unzipsfx$E: $(OBJX)
ifdef LONGARGS
	$(LD) $(LDFLAGS) $(OBJX) $(LIBS) -o unzipsfx
else
	echo $(OBJX1) > unzipsfx.rsp
	echo $(OBJX2) >> unzipsfx.rsp
	echo $(LIBS) >> unzipsfx.rsp
	$(LD) $(LDFLAGS) -o unzipsfx @unzipsfx.rsp
	$(RM) unzipsfx.rsp
endif
	$(STRIP) unzipsfx
	$(STUBIFY) unzipsfx
	stubedit $@ globbing=no
	$(RM) unzipsfx

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

# BIN_PATH may be defined in djgpp.env [make] or defined above.
install:
	$(INSTALL) $(UNZIPS) $(BIN_PATH)

uninstall:
	cd $(BIN_PATH); $(RM) $(UNZIPS)

clean:
ifeq ($(firstword $(RM)), del)
	$(RM) *$O
	$(RM) *.zip
else
	$(RM) $(OBJECTS_ALL) *.zip
endif

# Source dependencies:
crc_gcc$O:      crc_i386.S
crc32$O:        crc32.c $(UNZIP_H) zip.h
crctab$O:       crctab.c $(UNZIP_H) zip.h
crypt$O:        crypt.c $(UNZIP_H) zip.h crypt.h ttyio.h
crypt-$O:       crypt.c $(UNZIP_H) zip.h crypt.h ttyio.h
envargs$O:      envargs.c $(UNZIP_H)
explode$O:      explode.c $(UNZIP_H)
extract$O:      extract.c $(UNZIP_H) crypt.h
extract_$O:     extract.c $(UNZIP_H) crypt.h
fileio$O:       fileio.c $(UNZIP_H) crypt.h ttyio.h ebcdic.h
funzip$O:       funzip.c $(UNZIP_H) crypt.h ttyio.h tables.h
globals$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 $(UNZIP_H) crypt.h
list$O:         list.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 $(UNZIP_H)
process_$O:     process.c $(UNZIP_H)
ttyio$O:        ttyio.c $(UNZIP_H) zip.h crypt.h ttyio.h
ttyio-$O:       ttyio.c $(UNZIP_H) zip.h crypt.h ttyio.h
unreduce$O:     unreduce.c $(UNZIP_H)
unshrink$O:     unshrink.c $(UNZIP_H)
unzip$O:        unzip.c $(UNZIP_H) crypt.h version.h consts.h
unzipsfx$O:     unzip.c $(UNZIP_H) crypt.h version.h consts.h
zipinfo$O:      zipinfo.c $(UNZIP_H)