GNU make/附錄/一個複雜的Makefile實例
< GNU make
C 一個複雜的Makefile實例
編輯下面是一段為GNU tar程序設計的Makefile代碼,相當複雜。
由於all
是第一個目標,所以它也是默認目標。下面這個程序段有一個非常有趣的特色,這個特色就是源代碼程序中的「testpad.h文件是一個由名叫testpad
程序自動生成的,而這個testpad
又是又是由testpad.c
這個程序經過編譯產生的。
如果您輸入make
或者make all
,則 make 會讓名為tar
的目標運行從而開始編譯指令,會讓名為rmt
的目標運行從而生成一個遠程磁帶數據存取的守護程序,會讓名為tar.info
的目標運行從而生成INFO文檔。
如果您輸入make install
,那麼make就執行的就不僅僅只是「tar」、「rmt」和「tar.info」這三個目標了,還會執行相應的安裝操作。
如果您輸入make clean
,那麼make會清除所有的.o
文件,以及「tar」、「rmt」、「testpad」、「testpad.h」和「core」這些文件。
如果您輸入make distclean
,那麼make除了會清除「make clean」會清除的文件外,還會清除「TAGS」、「Makefile」和「config.status」這些文件(雖然不明顯,但下面這個makefile
和config.status
都是用戶通過tar發行版中的configure
文件生成的,這個「configure」文件這裡沒有列出)。
如果您輸入make realclean
,那麼make除了清除make distclean
會清除的文件外,還會清除由tar.info
生成的INFO文檔。
# 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