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C. Complex Makefile Example

Here is the makefile for the GNU tar program. This is a moderately complex makefile.

Because it is the first target, the default goal is `all'. An interesting feature of this makefile is that `testpad.h' is a source file automatically created by the testpad program, itself compiled from `testpad.c'.

If you type `make' or `make all', then make creates the `tar' executable, the `rmt' daemon that provides remote tape access, and the `tar.info' Info file.

If you type `make install', then make not only creates `tar', `rmt', and `tar.info', but also installs them.

If you type `make clean', then make removes the `.o' files, and the `tar', `rmt', `testpad', `testpad.h', and `core' files.

If you type `make distclean', then make not only removes the same files as does `make clean' but also the `TAGS', `Makefile', and `config.status' files. (Although it is not evident, this makefile (and `config.status') is generated by the user with the configure program, which is provided in the tar distribution, but is not shown here.)

If you type `make realclean', then make removes the same files as does `make distclean' and also removes the Info files generated from `tar.texinfo'.

In addition, there are targets shar and dist that create distribution kits.

 
# Generated automatically from Makefile.in by configure.
# Un*x Makefile for GNU tar program.
# Copyright (C) 1991 Free Software Foundation, Inc.

# This program is free software; you can redistribute
# it and/or modify it under the terms of the GNU
# General Public License …
…
…

SHELL = /bin/sh

#### Start of system configuration section. ####

srcdir = .

# If you use gcc, you should either run the
# fixincludes script that comes with it or else use
# gcc with the -traditional option.  Otherwise ioctl
# calls will be compiled incorrectly on some systems.
CC = gcc -O
YACC = bison -y
INSTALL = /usr/local/bin/install -c
INSTALLDATA = /usr/local/bin/install -c -m 644

# Things you might add to DEFS:
# -DSTDC_HEADERS        If you have ANSI C headers and
#                       libraries.
# -DPOSIX               If you have POSIX.1 headers and
#                       libraries.
# -DBSD42               If you have sys/dir.h (unless
#                       you use -DPOSIX), sys/file.h,
#                       and st_blocks in `struct stat'.
# -DUSG                 If you have System V/ANSI C
#                       string and memory functions
#                       and headers, sys/sysmacros.h,
#                       fcntl.h, getcwd, no valloc,
#                       and ndir.h (unless
#                       you use -DDIRENT).
# -DNO_MEMORY_H         If USG or STDC_HEADERS but do not
#                       include memory.h.
# -DDIRENT              If USG and you have dirent.h
#                       instead of ndir.h.
# -DSIGTYPE=int         If your signal handlers
#                       return int, not void.
# -DNO_MTIO             If you lack sys/mtio.h
#                       (magtape ioctls).
# -DNO_REMOTE           If you do not have a remote shell
#                       or rexec.
# -DUSE_REXEC           To use rexec for remote tape
#                       operations instead of
#                       forking rsh or remsh.
# -DVPRINTF_MISSING     If you lack vprintf function
#                       (but have _doprnt).
# -DDOPRNT_MISSING      If you lack _doprnt function.
#                       Also need to define
#                       -DVPRINTF_MISSING.
# -DFTIME_MISSING       If you lack ftime system call.
# -DSTRSTR_MISSING      If you lack strstr function.
# -DVALLOC_MISSING      If you lack valloc function.
# -DMKDIR_MISSING       If you lack mkdir and
#                       rmdir system calls.
# -DRENAME_MISSING      If you lack rename system call.
# -DFTRUNCATE_MISSING   If you lack ftruncate
#                       system call.
# -DV7                  On Version 7 Unix (not
#                       tested in a long time).
# -DEMUL_OPEN3          If you lack a 3-argument version
#                       of open, and want to emulate it
#                       with system calls you do have.
# -DNO_OPEN3            If you lack the 3-argument open
#                       and want to disable the tar -k
#                       option instead of emulating open.
# -DXENIX               If you have sys/inode.h
#                       and need it 94 to be included.

DEFS =  -DSIGTYPE=int -DDIRENT -DSTRSTR_MISSING \
        -DVPRINTF_MISSING -DBSD42
# Set this to rtapelib.o unless you defined NO_REMOTE,
# in which case make it empty.
RTAPELIB = rtapelib.o
LIBS =
DEF_AR_FILE = /dev/rmt8
DEFBLOCKING = 20

CDEBUG = -g
CFLAGS = $(CDEBUG) -I. -I$(srcdir) $(DEFS) \
        -DDEF_AR_FILE=\"$(DEF_AR_FILE)\" \
        -DDEFBLOCKING=$(DEFBLOCKING)
LDFLAGS = -g

prefix = /usr/local
# Prefix for each installed program,
# normally empty or `g'.
binprefix =

# The directory to install tar in.
bindir = $(prefix)/bin

# The directory to install the info files in.
infodir = $(prefix)/info

#### End of system configuration section. ####

SRC1 =  tar.c create.c extract.c buffer.c \
        getoldopt.c update.c gnu.c mangle.c
SRC2 =  version.c list.c names.c diffarch.c \
        port.c wildmat.c getopt.c
SRC3 =  getopt1.c regex.c getdate.y
SRCS =  $(SRC1) $(SRC2) $(SRC3)
OBJ1 =  tar.o create.o extract.o buffer.o \
        getoldopt.o update.o gnu.o mangle.o
OBJ2 =  version.o list.o names.o diffarch.o \
        port.o wildmat.o getopt.o
OBJ3 =  getopt1.o regex.o getdate.o $(RTAPELIB)
OBJS =  $(OBJ1) $(OBJ2) $(OBJ3)
AUX =   README COPYING ChangeLog Makefile.in  \
        makefile.pc configure configure.in \
        tar.texinfo tar.info* texinfo.tex \
        tar.h port.h open3.h getopt.h regex.h \
        rmt.h rmt.c rtapelib.c alloca.c \
        msd_dir.h msd_dir.c tcexparg.c \
        level-0 level-1 backup-specs testpad.c

.PHONY: all
all:    tar rmt tar.info

.PHONY: tar
tar:    $(OBJS)
        $(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)

rmt:    rmt.c
        $(CC) $(CFLAGS) $(LDFLAGS) -o $@ rmt.c

tar.info: tar.texinfo
        makeinfo tar.texinfo

.PHONY: install
install: all
        $(INSTALL) tar $(bindir)/$(binprefix)tar
        -test ! -f rmt || $(INSTALL) rmt /etc/rmt
        $(INSTALLDATA) $(srcdir)/tar.info* $(infodir)

$(OBJS): tar.h port.h testpad.h
regex.o buffer.o tar.o: regex.h
# getdate.y has 8 shift/reduce conflicts.

testpad.h: testpad
        ./testpad

testpad: testpad.o
        $(CC) -o $@ testpad.o

TAGS:   $(SRCS)
        etags $(SRCS)

.PHONY: clean
clean:
        rm -f *.o tar rmt testpad testpad.h core

.PHONY: distclean
distclean: clean
        rm -f TAGS Makefile config.status

.PHONY: realclean
realclean: distclean
        rm -f tar.info*

.PHONY: shar
shar: $(SRCS) $(AUX)
        shar $(SRCS) $(AUX) | compress \
          > tar-`sed -e '/version_string/!d' \
                     -e 's/[^0-9.]*\([0-9.]*\).*/\1/' \
                     -e q
                     version.c`.shar.Z

.PHONY: dist
dist: $(SRCS) $(AUX)
        echo tar-`sed \
             -e '/version_string/!d' \
             -e 's/[^0-9.]*\([0-9.]*\).*/\1/' \
             -e q
             version.c` > .fname
        -rm -rf `cat .fname`
        mkdir `cat .fname`
        ln $(SRCS) $(AUX) `cat .fname`
        tar chZf `cat .fname`.tar.Z `cat .fname`
        -rm -rf `cat .fname` .fname

tar.zoo: $(SRCS) $(AUX)
        -rm -rf tmp.dir
        -mkdir tmp.dir
        -rm tar.zoo
        for X in $(SRCS) $(AUX) ; do \
            echo $$X ; \
            sed 's/$$/^M/' $$X \
            > tmp.dir/$$X ; done
        cd tmp.dir ; zoo aM ../tar.zoo *
        -rm -rf tmp.dir

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