263 lines
7.3 KiB
HTML
263 lines
7.3 KiB
HTML
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<h2>Comments</h2>
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<pre><code># This is a comment
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include foo # This is another comment</code></pre>
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<h2>Targets</h2>
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<pre><code>kbd.o command.o files.o : command.h
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display.o insert.o search.o files.o : buffer.h
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.PHONY: clean
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clean:
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rm *.o temp</code></pre>
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<h2>Variables</h2>
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<pre><code>objects = main.o kbd.o command.o display.o \
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insert.o search.o files.o utils.o
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edit : $(objects)
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cc -o edit $(objects)
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$(objects) : defs.h
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%oo: $$< $$^ $$+ $$*
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foo : bar/lose
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cd $(@D) && gobble $(@F) > ../$@</code></pre>
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<h2>Strings</h2>
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<pre><code>STR = 'A string!'
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HELLO = 'hello \
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world'
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HELLO2 = "hello \
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world"</code></pre>
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<h2>Directives</h2>
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<pre><code>include foo *.mk $(bar)
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vpath %.c foo
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override define two-lines =
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foo
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$(bar)
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endef
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ifeq ($(CC),gcc)
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libs=$(libs_for_gcc)
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else
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libs=$(normal_libs)
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endif</code></pre>
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<h2>Functions</h2>
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<pre><code>whoami := $(shell whoami)
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host-type := $(shell arch)
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y = $(subst 1,2,$(x))
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dirs := a b c d
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files := $(foreach dir,$(dirs),$(wildcard $(dir)/*))
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reverse = $(2) $(1)
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foo = $(call reverse,a,b)
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$(foreach prog,$(PROGRAMS),$(eval $(call PROGRAM_template,$(prog))))</code></pre>
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<h2>Complete example</h2>
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<pre><code>#!/usr/bin/make -f
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# Generated automatically from Makefile.in by configure.
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# Un*x Makefile for GNU tar program.
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# Copyright (C) 1991 Free Software Foundation, Inc.
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# This program is free software; you can redistribute
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# it and/or modify it under the terms of the GNU
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# General Public License …
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…
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…
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SHELL = /bin/sh
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#### Start of system configuration section. ####
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srcdir = .
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# If you use gcc, you should either run the
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# fixincludes script that comes with it or else use
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# gcc with the -traditional option. Otherwise ioctl
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# calls will be compiled incorrectly on some systems.
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CC = gcc -O
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YACC = bison -y
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INSTALL = /usr/local/bin/install -c
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INSTALLDATA = /usr/local/bin/install -c -m 644
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# Things you might add to DEFS:
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# -DSTDC_HEADERS If you have ANSI C headers and
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# libraries.
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# -DPOSIX If you have POSIX.1 headers and
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# libraries.
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# -DBSD42 If you have sys/dir.h (unless
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# you use -DPOSIX), sys/file.h,
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# and st_blocks in `struct stat'.
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# -DUSG If you have System V/ANSI C
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# string and memory functions
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# and headers, sys/sysmacros.h,
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# fcntl.h, getcwd, no valloc,
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# and ndir.h (unless
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# you use -DDIRENT).
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# -DNO_MEMORY_H If USG or STDC_HEADERS but do not
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# include memory.h.
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# -DDIRENT If USG and you have dirent.h
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# instead of ndir.h.
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# -DSIGTYPE=int If your signal handlers
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# return int, not void.
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# -DNO_MTIO If you lack sys/mtio.h
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# (magtape ioctls).
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# -DNO_REMOTE If you do not have a remote shell
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# or rexec.
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# -DUSE_REXEC To use rexec for remote tape
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# operations instead of
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# forking rsh or remsh.
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# -DVPRINTF_MISSING If you lack vprintf function
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# (but have _doprnt).
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# -DDOPRNT_MISSING If you lack _doprnt function.
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# Also need to define
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# -DVPRINTF_MISSING.
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# -DFTIME_MISSING If you lack ftime system call.
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# -DSTRSTR_MISSING If you lack strstr function.
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# -DVALLOC_MISSING If you lack valloc function.
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# -DMKDIR_MISSING If you lack mkdir and
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# rmdir system calls.
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# -DRENAME_MISSING If you lack rename system call.
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# -DFTRUNCATE_MISSING If you lack ftruncate
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# system call.
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# -DV7 On Version 7 Unix (not
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# tested in a long time).
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# -DEMUL_OPEN3 If you lack a 3-argument version
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# of open, and want to emulate it
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# with system calls you do have.
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# -DNO_OPEN3 If you lack the 3-argument open
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# and want to disable the tar -k
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# option instead of emulating open.
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# -DXENIX If you have sys/inode.h
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# and need it 94 to be included.
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DEFS = -DSIGTYPE=int -DDIRENT -DSTRSTR_MISSING \
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-DVPRINTF_MISSING -DBSD42
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# Set this to rtapelib.o unless you defined NO_REMOTE,
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# in which case make it empty.
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RTAPELIB = rtapelib.o
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LIBS =
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DEF_AR_FILE = /dev/rmt8
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DEFBLOCKING = 20
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CDEBUG = -g
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CFLAGS = $(CDEBUG) -I. -I$(srcdir) $(DEFS) \
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-DDEF_AR_FILE=\"$(DEF_AR_FILE)\" \
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-DDEFBLOCKING=$(DEFBLOCKING)
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LDFLAGS = -g
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prefix = /usr/local
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# Prefix for each installed program,
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# normally empty or `g'.
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binprefix =
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# The directory to install tar in.
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bindir = $(prefix)/bin
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# The directory to install the info files in.
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infodir = $(prefix)/info
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#### End of system configuration section. ####
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SRCS_C = tar.c create.c extract.c buffer.c \
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getoldopt.c update.c gnu.c mangle.c \
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version.c list.c names.c diffarch.c \
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port.c wildmat.c getopt.c getopt1.c \
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regex.c
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SRCS_Y = getdate.y
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SRCS = $(SRCS_C) $(SRCS_Y)
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OBJS = $(SRCS_C:.c=.o) $(SRCS_Y:.y=.o) $(RTAPELIB)
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AUX = README COPYING ChangeLog Makefile.in \
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makefile.pc configure configure.in \
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tar.texinfo tar.info* texinfo.tex \
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tar.h port.h open3.h getopt.h regex.h \
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rmt.h rmt.c rtapelib.c alloca.c \
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msd_dir.h msd_dir.c tcexparg.c \
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level-0 level-1 backup-specs testpad.c
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.PHONY: all
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all: tar rmt tar.info
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tar: $(OBJS)
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$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
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rmt: rmt.c
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ rmt.c
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tar.info: tar.texinfo
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makeinfo tar.texinfo
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.PHONY: install
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install: all
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$(INSTALL) tar $(bindir)/$(binprefix)tar
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-test ! -f rmt || $(INSTALL) rmt /etc/rmt
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$(INSTALLDATA) $(srcdir)/tar.info* $(infodir)
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$(OBJS): tar.h port.h testpad.h
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regex.o buffer.o tar.o: regex.h
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# getdate.y has 8 shift/reduce conflicts.
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testpad.h: testpad
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./testpad
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testpad: testpad.o
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$(CC) -o $@ testpad.o
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TAGS: $(SRCS)
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etags $(SRCS)
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.PHONY: clean
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clean:
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rm -f *.o tar rmt testpad testpad.h core
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.PHONY: distclean
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distclean: clean
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rm -f TAGS Makefile config.status
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.PHONY: realclean
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realclean: distclean
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rm -f tar.info*
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.PHONY: shar
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shar: $(SRCS) $(AUX)
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shar $(SRCS) $(AUX) | compress \
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> tar-`sed -e '/version_string/!d' \
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-e 's/[^0-9.]*\([0-9.]*\).*/\1/' \
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-e q
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version.c`.shar.Z
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.PHONY: dist
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dist: $(SRCS) $(AUX)
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echo tar-`sed \
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-e '/version_string/!d' \
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-e 's/[^0-9.]*\([0-9.]*\).*/\1/' \
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-e q
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version.c` > .fname
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-rm -rf `cat .fname`
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mkdir `cat .fname`
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ln $(SRCS) $(AUX) `cat .fname`
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tar chZf `cat .fname`.tar.Z `cat .fname`
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-rm -rf `cat .fname` .fname
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tar.zoo: $(SRCS) $(AUX)
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-rm -rf tmp.dir
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-mkdir tmp.dir
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-rm tar.zoo
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for X in $(SRCS) $(AUX) ; do \
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echo $$X ; \
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sed 's/$$/^M/' $$X \
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> tmp.dir/$$X ; done
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cd tmp.dir ; zoo aM ../tar.zoo *
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-rm -rf tmp.dir
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</code></pre>
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