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Appendix C: Complex Makeﬁle Example 177

Appendix C Complex Makeﬁle Example

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

The ﬁrst line uses a #! setting to allow the makeﬁle to be executed directly.

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.

#!/usr/bin/make -f

# Generated automatically from Makefile.in by configure.

# Un*x Makefile for GNU tar program.

# 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

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