{"id":496,"date":"2014-06-08T12:37:55","date_gmt":"2014-06-08T21:37:55","guid":{"rendered":"\/blog\/?p=496"},"modified":"2023-09-21T09:38:43","modified_gmt":"2023-09-21T00:38:43","slug":"make-%eb%b3%80%ec%88%98-%eb%ac%b8%eb%b2%95","status":"publish","type":"post","link":"https:\/\/hasu0707.duckdns.org\/blog\/?p=496","title":{"rendered":"make \ubcc0\uc218 \ubb38\ubc95"},"content":{"rendered":"

\ucd9c\ucc98 : <\/span>http:\/\/blog.daum.net\/english_100\/10<\/span><\/a>

6. <\/span><\/span>\ubcc0\uc218 \uc0ac\uc6a9\ubc95<\/span><\/strong><\/p>\n<\/span>

 <\/span><\/p><\/span>\n<\/span>

\ubcc0\uc218\ub780 \ubb38\uc790\uc5f4\uc744 \ud568\uc720\ud558\uace0 \uc788\ub294 makefile \ub0b4\uc5d0 \uc815\uc758\ub41c \n\uc774\ub984\uc774\ub2e4. \uc774 \uac12\uc740 \ud0c0\uae43\uc774\ub098 prerequisite, recipe \ub4f1 makefile\uc758 \ub2e4\ub978 \ubd80\ubd84\uc5d0\uc11c \uce58\ud658\ub418\uc5b4 \uc4f0\uc774\uac8c \ub41c\ub2e4. \n\ubcc0\uc218\ub098 \ud568\uc218\ub294 recipe \uc5d0\uc11c\ub9cc \uc81c\uc678\ud558\uace0 makefile\uc744 \uc77d\uc5b4\ub4e4\uc77c \ub54c '='\uc758 \uc624\ub978\ucabd \ubd80\ubd84\uc774\ub098 define \uc9c0\uc2dc\uc790\uc758 \ubab8\ud1b5\ubd80\ubd84\uc758\n \uac12\uc73c\ub85c \ud3bc\uccd0\uc9c4\ub2e4.<\/span><\/p>\n<\/span>

\ubcc0\uc218\uc5d0\ub294 \ud30c\uc77c\uc774\ub984, \ucef4\ud30c\uc77c\ub7ec\uc5d0\uac8c \uac74\ub124\uc904 \uc635\uc158, \uc2e4\ud589\ud560 \ud504\ub85c\uadf8\ub7a8, \uac80\uc0c9\ud560 \ub514\ub809\ud1a0\ub9ac \ub4f1\ub4f1 \uc0c1\uc0c1\ud560 \uc218 \uc788\ub294 \uc5ec\ub7ec\uac00\uc9c0\uac00 \ub2f4\uae38 \uc218 \uc788\ub2e4.<\/span><\/p>\n<\/span>

\ubcc0\uc218\uc774\ub984\uc740 ':', '#', '='\ub4f1\uc774 \ud3ec\ud568\ub418\uc9c0 \uc54a\uc740 \n\ubb38\uc790\uc5f4\ub85c \ub9cc\ub4e4\uc5b4\uc9c0\uba70 \uc54c\ud30c\ubcb3\ubb38\uc790, \uc22b\uc790, \ubc11\uc904\uc774\uc678\uc758 \ubb38\uc790\ub294 \ud53c\ud574\uc57c \ud55c\ub2e4. \uc65c\ub0d0\ud558\uba74 \uadf8\ub7f0 \ubb38\uc790\ub294 \ud2b9\uc218\ud55c \uc758\ubbf8\ub97c \uac16\uc744 \uc218 \uc788\uc73c\uba70 \ub610\ud55c \n\uc5b4\ub5a4 \uc258\uc740 \uc774\ub7f0 \ubb38\uc790\ub97c \ud558\uc704 make\uc5d0 \uc804\ub2ec\ud558\uc9c0 \ubabb\ud55c\ub2e4.<\/span><\/p>\n<\/span>

\ubcc0\uc218\uba85\uc740 \ub300\uc18c\ubb38\uc790\uac00 \uad6c\ubd84\ub418\ubbc0\ub85c 'foo', 'FOO', 'Foo'\ub294 \ubaa8\ub450 \ub2e4\ub978 \uc774\ub984\uc774 \ub41c\ub2e4.<\/span><\/p>\n<\/span>

 <\/span><\/p><\/span>\n<\/span>

6.1 \ubcc0\uc218 \ucc38\uc870\uc758 \uae30\ucd08<\/span><\/strong><\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

\ubcc0\uc218\uac12\uc744 \uce58\ud658\ud574 \uc0ac\uc6a9\ud558\uae30 \uc704\ud574\uc11c\ub294 $(foo), ${foo} \ucc98\ub7fc \ub2ec\ub7ec \uae30\ud638\uc640 \uad04\ud638\ub85c \ubb36\uc778 \ubcc0\uc218\uba85\uc744 \uc368\uc8fc\uba74 \ub41c\ub2e4. <\/span><\/p>\n<\/span>

\ubcc0\uc218\ucc38\uc870\ub294 \ud0c0\uae43, prerequisite, recipe, \uc9c0\uc2dc\uc790, \ub2e4\ub978 \ubcc0\uc218\uac12\ub0b4 \ub4f1 \uc5b4\ub514\ub4e0 \uc4f0\uc77c \uc218 \uc788\ub2e4. \ub2e4\uc74c \uc608\ub97c \ubcf4\uc790 :<\/span><\/p>\n<\/span>

objects = program.o foo.o utils.o<\/span><\/p>\n<\/span>

program : $(objects)<\/span><\/p>\n<\/span>

cc -o program $(objects)<\/span><\/p>\n<\/span>

$(objects) : defs.h<\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

\uc5ec\uae30\uc11c \ubcc0\uc218\ub294 \ud30c\uc77c\uc774\ub984\ub4e4\uc744 \ud568\uc720\ud558\uace0 \uc788\uc73c\uba70 \uc774\ub294 \uace7\ubc14\ub85c \uce58\ud658\ub41c\ub2e4. \ub2e4\uc74c \uc608\ub294:<\/span><\/p>\n<\/span>

foo = c<\/span><\/p>\n<\/span>

prog.o : prog.$(foo)<\/span><\/p>\n<\/span>

$(foo)$(foo) -$(foo) prog.$(foo)<\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

\uc774 \uc608\ub294 \ubaa8\ub4e0 foo\uac00 'c'\ub85c \uce58\ud658\ub418\uc5b4 \uc815\uc0c1\uc801\uc73c\ub85c \uc791\ub3d9\ud55c\ub2e4. \ud558\uc9c0\ub9cc \uc774\ub7f0\uc2dd\uc73c\ub85c makefile\uc744 \uc791\uc131\ud574\uc11c\ub294 \uc548\ub41c\ub2e4!<\/span><\/p>\n<\/span>

$x \ud615\ud0dc\uc758 \ub2ec\ub7ec\uae30\ud638\uc640 \ud55c\uac1c\uc758 \ubb38\uc790\ub85c \uc77c\ub8e8\uc5b4\uc9c4 \ud615\ud0dc\ub294 \uc5ed\uc2dc x\ub77c\ub294 \ubcc0\uc218\ub97c \ucc38\uc870\ud558\uc9c0\ub9cc \uc774\ub7f0 \uc6a9\ub840\ub294 \ubc14\ub78c\uc9c1\ud558\uc9c0 \uc54a\ub2e4. \uc65c\ub0d0\ud558\uba74 \uc790\ub3d9\ubcc0\uc218\uc640 \ud5e4\uae54\ub9b4 \uc218 \uc788\uae30\ub54c\ubb38<\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

6.2 \ubcc0\uc218\uc758 \ub450\uac00\uc9c0 \ud48d\ubbf8<\/span><\/strong><\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

GNU make\uc5d0\uc11c \ubcc0\uc218\uac00 \uac12\uc744 \ud560\ub2f9\ubc1b\ub294 \ubc29\ubc95\uc740 \ub450\uac00\uc9c0\uac00 \uc788\ub2e4. \uc774\ub97c \ubcc0\uc218\uc758 \ub450\uac00\uc9c0 \ud48d\ubbf8\ub77c \ubd80\ub978\ub2e4.<\/span><\/p>\n<\/span>

\ubcc0\uc218\uc758 \uccab\ubc88\uc9f8 \ud48d\ubbf8\ub294 \uc21c\ud658\uc801\uc73c\ub85c \ud3bc\uccd0\uc9c0\ub294 \ubcc0\uc218\ub85c '='\ub098 define \uc9c0\uc2dc\uc790\ub97c \uc774\uc6a9\ud574 \uc815\uc758\ub41c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>

foo = $(bar)<\/span><\/p>\n<\/span>

bar = $(ugh)<\/span><\/p>\n<\/span>

ugh = Huh?<\/span><\/p>\n<\/span>

all : ; echo $(foo)<\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

\uc774 \uc608\ub294 \ud3bc\uccd0\uc9c0\uace0 \ub610 \ud3bc\uccd0\uc838 \uacb0\uad6d 'Huh?'\ub97c \ucd9c\ub825\ud55c\ub2e4.<\/span><\/p>\n<\/span>

\uc774 \ud615\ud0dc\ub294 \uc7a5 \ub2e8\uc810\uc774 \uc874\uc7ac\ud558\ub294\ub370 \uc7a5\uc810\uc740 :<\/span><\/p>\n<\/span>

CFLAGS = $(include_dirs) -O<\/span><\/p>\n<\/span>

include_dirs = -lfoo -lbar<\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

'CFLAGS'\uac00 recipe\uc5d0\uc11c \uc0ac\uc6a9\ub420 \ub54c '-lfoo -lbar -O'\ub85c \uc6d0\ud558\ub294 \ub300\ub85c \ud3bc\uccd0\uc9c4\ub2e4. \ud558\uc9c0\ub9cc \uc774 \ubc29\uc2dd\uc740 \ubcc0\uc218\uc758 \ub05d\uc5d0 \ub2e4\ub978 \uac12\uc744 \ucca8\ubd80\ud560 \uc218\uac00 \uc5c6\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>

CFLAGS = $(CFLAGS) -O<\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

\uc65c\ub0d0\ud558\uba74 \uc774\ub294 \ubcc0\uc218 \ud3bc\uce68\uc5d0 \uc788\uc5b4 \ubb34\ud55c\ub8e8\ud504\ub97c \ud615\uc131\ud558\uae30 \ub54c\ubb38\uc774\ub2e4\n (make\uac00 \ubb34\ud55c\ub8e8\ud504\ub97c \uac10\uc9c0\ud558\uace0 \uc5d0\ub7ec\ub97c \ucd9c\ub825\ud568). \ub610\ub2e4\ub978 \ub2e8\uc810\uc740 \ubcc0\uc218 \uc815\uc758 \ub0b4\uc5d0\uc11c \ucc38\uc870\ub41c \ud568\uc218\ub294 \ubcc0\uc218\uac00 \ud3bc\uccd0\uc9c8 \ub54c\ub9c8\ub2e4 \uc2e4\ud589\ub41c\ub2e4\ub294\n \uac83\uc774\ub2e4. \uc774\ub294 make\ub97c \ub290\ub824\uc9c0\uac8c \ud560 \ubfd0 \uc544\ub2c8\ub77c \uc5c9\ub6b1\ud55c \uacb0\uacfc\ub97c \ub9cc\ub4e4\uc5b4 \ub0b4\uac8c \ub41c\ub2e4.<\/span><\/p>\n<\/span>

\uc774\ub7ec\ud55c \uc21c\ud658 \ud3bc\uce68 \ubcc0\uc218\uc758 \ubb38\uc81c\uc810\uc744 \ud53c\ud558\uae30\uc704\ud574 \ub2e4\ub978 \ud48d\ubbf8\ub97c \n\uac00\uc9c4 \ubcc0\uc218 \uc989 \ub2e8\uc21c \ud3bc\uce68 \ubcc0\uc218\uac00 \uc0dd\uaca8\ub0ac\ub2e4. \ub2e8\uc21c \ud3bc\uce68 \ubcc0\uc218\ub294 ':='\ub97c \uc774\uc6a9\ud574 \uc815\uc758\ub418\uba70 \uadf8 \uac12\uc740 \ud14d\uc2a4\ud2b8\ub85c \ud3b8\uccd0\uc9c4 \uacb0\uacfc\uac12\uc774 \ub41c\ub2e4. \uc774\n \ubcc0\uc218\ub294 \ubcc0\uc218\uac00 \uc815\uc758\ub41c \ubc14\ub85c \uadf8\ub54c\uc758 \uac12\uc744 \uac16\ub294\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>

x := foo<\/span><\/p>\n<\/span>

y := $(x) bar<\/span><\/p>\n<\/span>

x := later<\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

\ub2e4\uc74c\uacfc \ub3d9\uc77c \ud558\ub2e4.<\/span><\/p>\n<\/span>

y := foo bar<\/span><\/p>\n<\/span>

x := later<\/span><\/p>\n<\/span>

 <\/span><\/p>\n<\/span>

\uc258\uacfc \uc5f0\uacb0\ud574\uc11c ':='\uc758 \uc0ac\uc6a9\uc744 \uc124\uba85\ud558\ub294 \uc880 \ub354 \ubcf5\uc7a1\ud55c \uc608\ub97c \uc0b4\ud3b4\ubcf4\uc790. \uc5ec\uae30\uc5d0\ub294 MAKELEVEL \ubcc0\uc218\uac00 \uc0ac\uc6a9\ub418\ub294\ub370 \uc774\ub294 \uac01 \ub808\ubca8\uc5d0\uc11c \ub808\ubca8\ub85c \ub0b4\ub824\uac00\uba70 \uadf8 \uac12\uc774 \ubcc0\ud654\ud55c\ub2e4.<\/span><\/p>

     ifeq (0,${MAKELEVEL})\n     whoami    := $(shell whoami)\n     host-type := $(shell arch)\n     MAKE := ${MAKE} host-type=${host-type} whoami=${whoami}\n     endif\n<\/span><\/pre>\n\n\n\n\n<\/span>
 <\/span><\/p>\n<\/span>
':='\ub97c \uc0ac\uc6a9\ud558\ub294 \uc774\uc810\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \ub514\ub809\ud1a0\ub9ac\ub97c \ub530\ub77c \ub0b4\ub824\uac08 \ub54c \ub098\ud0c0\ub09c\ub2e4 :<\/span><\/span><\/p>\n<\/span>
${subdirs}<\/span><\/span><\/p>\n<\/span>
${MAKE} -C $@ all<\/span><\/span><\/p>\n<\/span>
 <\/span><\/p><\/span>\n<\/span>
\ub2e8\uc21c \ud3bc\uce68 \ubcc0\uc218\ub294 \uc77c\ubc18 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\uc5d0\uc11c\ucc98\ub7fc \uc791\ub3d9\ub418\uae30 \ub54c\ubb38\uc5d0 \ubcf5\uc7a1\ud55c makefile\uc5d0 \ub300\ud574 \ud6e8\uc52c \uc608\uce21\uac00\ub2a5\uc131\uc744 \ub192\uc5ec\uc900\ub2e4. \ubcc0\uc218\ub97c \uc7ac\uc815\uc758\ud560 \uc218 \uc788\uac8c \ud574\uc8fc\uace0 \ud3bc\uce68 \ud568\uc218\ub97c \ub354\uc6b1\ub354 \ud6a8\uc728\uc801\uc73c\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc788\uac8c \ud574\uc900\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p><\/span>\n<\/span>
\uc911\ub7b5<\/span><\/p>\n<\/span>
 <\/span><\/p><\/span>\n<\/span>
\ubcc0\uc218\uac12 \ud560\ub2f9\uc744 \uc704\ud55c \ub610 \ub2e4\ub978 \uc5f0\uc0b0\uc790\ub85c '?='\uc774 \uc788\ub294\ub370 \uc774\ub97c \uc870\uac74 \ubcc0\uc218 \ud560\ub2f9 \uc5f0\uc0b0\uc790\ub77c\uace0 \ubd80\ub978\ub2e4. \uadf8 \uc774\uc720\ub294 \ubcc0\uc218\uac00 \uc544\uc9c1 \uc815\uc758\ub418\uc9c0 \uc54a\uc558\uc744 \ub54c\uc5d0\ub9cc \uc774 \uc5f0\uc0b0\uc774 \ud6a8\ub825\uc744 \ubc1c\ud718\ud560 \uc218 \uc788\uae30 \ub54c\ubb38\uc774\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>
FOO ?= bar<\/span><\/p>\n<\/span>
 <\/span><\/p><\/span>\n<\/span>
\ub294 \ub2e4\uc74c\uacfc \uc644\uc804\ud788 \ub3d9\uc77c\ud558\ub2e4.<\/span><\/p>\n<\/span>
ifeq ( $(origin FOO), undefined)<\/span><\/p>\n<\/span>
FOO =bar<\/span><\/p>\n<\/span>
endif<\/span><\/p>\n<\/span>
 <\/span><\/p><\/span>\n<\/span>
6.3  \ubcc0\uc218 \ucc38\uc870\uc5d0 \ub300\ud55c \ub610 \ub2e4\ub978 \ud2b9\uc131<\/span><\/strong><\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.3.1 \uce58\ud658 \ucc38\uc870<\/span><\/strong><\/span><\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uce58\ud658 \ucc38\uc870 (Substitution References)\ub294 \ubcc0\uc218\uac12\uc744 \uc6d0\ud558\ub294 \uac12\uc73c\ub85c \ubc14\uafb8\ub294 \uac83\uc73c\ub85c '$(var: \na=b)'\ud615\ud0dc\ub97c \uac16\ub294\ub2e4. \uc758\ubbf8\ub294 var\ub77c\ub290 \ubcc0\uc218\uac12\uc758 \ub05d\uc5d0 \ubd99\uc5b4\uc788\ub294 'a'\ub97c 'b'\ub85c \ubc14\uafb8\ub77c\ub294 \ub9d0\uc774\ub2e4. \ub9e8 \ub05d\uc5d0 \ubd99\uc5b4\uc788\ub294 'a'\ub9cc \n\ubc14\ub014 \ubfd0 \uc911\uac04\uc5d0 \ub098\ud0c0\ub098\ub294 'a'\uc5d0\ub294 \ubcc0\ud654\uac00 \uc5c6\ub2e4. \ub2e4\uc74c \uc608\ub294 :<\/span><\/p>\n<\/span>
foo := a.o b.o c.o<\/span><\/p>\n<\/span>
bar := $(foo: .o=.c)<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
bar\uc758 \uac12\uc740 'a.c b.c c.c'\ub85c \ubc14\ub010\ub2e4.<\/span><\/p>\n<\/span>
\uce58\ud658\ucc38\uc870\ub294 patsubst \ud3bc\uce68 \ud568\uc218\uc758 \ub2e8\ucd95\ud615\uc774\ub77c \ud560 \uc218 \uc788\ub2e4. \uc704 \uc608\ub97c \ub2ec\ub9ac \ud45c\uc2dc\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc740\ub370 \uc774\ub294 $(patsubst a,b,$(bar))\uc640 \ub3d9\uc77c\ud558\ub2e4 :<\/span><\/p>\n<\/span>
foo := a.o b.o c.o<\/span><\/p>\n<\/span>
bar := $(foo:%.o=%.c)<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.3.2 \uacc4\uc0b0\ub41c \ubcc0\uc218\uba85<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uacc4\uc0b0\ub41c \ubcc0\uc218\uba85\uc740 \ubcf5\uc7a1\ud55c makefile \ud504\ub85c\uadf8\ub798\ubc0d\uc5d0 \ud544\uc694\ud55c \uac1c\ub150\uc73c\ub85c \ub9ce\uc740 \uacbd\uc6b0 \uc4f0\uc774\uc9c4 \uc54a\uc9c0\ub9cc \uaf2d \uc54c\uace0 \uc2f6\uc73c\uba74  <\/span>http:\/\/www.gnu.org\/software\/make\/manual\/make.html#Advanced<\/span><\/a> (Computed bariable names) \ucc38\uc870<\/span><\/p><\/span>\n<\/span>
 <\/span><\/p><\/span>\n<\/span>
<\/span><\/strong><\/p>\n<\/span>
6.4 \ubcc0\uc218\uac00 \uac12\uc744 \ud560\ub2f9 \ubc1b\ub294 \ubc29\ubc95<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
- make\uac00 \uc2e4\ud589\ub420 \ub54c \uc635\uc158\uc744 \uc774\uc6a9\ud574 \ud560\ub2f9\ubc1b\uc744 \uc218 \uc788\ub2e4.<\/span><\/p>\n<\/span>
- makefile \ub0b4\uc5d0\uc11c \ubcc0\uc218\uac12\uc744 \uba85\uae30\ud568\uc73c\ub85c\uc368 \ud560\ub2f9\ubc1b\ub294\ub2e4.<\/span><\/p>\n<\/span>
- \ud658\uacbd \ubcc0\uc218\ub3c4 make \ubcc0\uc218\uac00 \ub420 \uc218 \uc788\ub2e4.<\/span><\/p>\n<\/span>
- \uaddc\uce59 \ub0b4\uc5d0\uc11c \uc790\ub3d9 \ubcc0\uc218\ub294 \uc0c8\ub85c\uc6b4 \uac12\uc744 \ud560\ub2f9 \ubc1b\ub294\ub2e4.<\/span><\/p>\n<\/span>
- \uba87\uba87 \ubcc0\uc218\ub294 \uc560\ucd08\uc5d0 \uc0c1\uc218\ub97c \ud560\ub2f9 \ubc1b\ub294\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.5 \ubcc0\uc218\uac12<\/span> \uc124\uc815\ud558\uae30<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
makefile \ub0b4\uc5d0\uc11c \ubcc0\uc218\uac12\uc744 \uc124\uc815\ud558\ub294 \ubc29\ubc95\uc740 '='\ub098 ':='\uc744 \uc774\uc6a9\ud574\uc11c \uc774\ub8e8\uc5b4\uc9c4\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>
objects = main.o foo.o bar.o utils.o<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc774 \uc608\ub294 objects\ub77c\ub294 \uc774\ub984\uc758 \ubcc0\uc218\uc5d0 \uac12\uc744 \ud560\ub2f9\ud558\ub294\ub370 \uc5ec\uae30\uc11c \ubcc0\uc218\uba85 \uc55e\ub4a4\uc758 \uacf5\ubc31\uc774\ub098 '=' \uc9c1\ud6c4\uc758 \uacf5\ubc31\uc740 \ubb34\uc2dc\ub41c\ub2e4.<\/span><\/p>\n<\/span>
\ubcc0\uc218\ub294 '='\uc5d0 \uc704\ud574 \uac12\uc774 \ud560\ub2f9\ub418\uba74 \uc21c\ud658\ud3bc\uce68 \ubcc0\uc218, ':='\uc5d0 \uc758\ud558\uba74 \ub2e8\uc21c\ud3bc\uce68 \ubcc0\uc218\ub77c \ud558\ub294\ub370 \uc774\ub294 \ubcc0\uc218\uac12 \ud3bc\uce68\uc758 \uc2dc\uae30\uc5d0 \ucc28\uc774\uac00 \uc788\ub2e4.<\/span><\/p>\n<\/span>
\ubcc0\uc218 \uae38\uc774\ub294 \ud55c\uacc4\uac00 \uc5c6\uc73c\uba70 \ubcc0\uc218 \uae38\uc774\uac00 \uae38\uba74 backslash-newline\uc744 \uc774\uc6a9\ud574 \uc5ec\ub7ec \ud589\uc73c\ub85c \ub098\ub204\uba74 makefile\uc744 \uc77d\uae30\uc5d0 \ud3b8\ud574\uc9c4\ub2e4.<\/span><\/p>\n<\/span>
\ubcc0\uc218\uac00 \uc874\uc7ac\ud558\uc9c0 \uc54a\uc558\uc73c\uba74 \uac12\uc744 \ud560\ub2f9\ud558\uace0 \uc874\uc7ac\ud558\uba74 \uc544\ubb34\uc77c\ub3c4 \uc54a\uac8c \ud558\ub824\uba74 '?='\ub97c \uc0ac\uc6a9\ud558\uba70 \uc774\ub294 origin \ud568\uc218 \uae30\ub2a5\uacfc \ub3d9\uc77c\ud558\ub2e4.<\/span><\/p>\n<\/span>
FOO ?= bar<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc640<\/span><\/p>\n<\/span>
ifeq ($(origin FOO), undefined)<\/span><\/p>\n<\/span>
FOO =bar<\/span><\/p>\n<\/span>
endif<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ub294 \ub3d9\uc77c\ud558\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.6 \ubcc0\uc218\uc5d0 \uac12 \ub367\ubd99\uc774\uae30<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc774\ubbf8 \uac12\uc774 \uc8fc\uc5b4\uc9c4 \ubcc0\uc218\uc5d0 \ub2e4\ub978 \uac12\uc744 \ub367\ubd99\uc774\ub294 \uac83\uc774 \uac00\ub2a5\ud55c\ub370 \uc774\ub294 '+='\ub97c \uc774\uc6a9\ud574 \uc774\ub8e8\uc5b4\uc9c4\ub2e4. <\/span><\/p>\n<\/span>
objects += another.o<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc774\ub294 \uc6d0\ub798\uc758 \uac12\uc5d0 another.o\ub97c \ub367\ubd99\uc774\ub294 \uac83\uc774\ub2e4. \ub2e4\uc74c \uc608\ub294 :<\/span><\/p>\n<\/span>
objects = main.o foo.o bar.o utils.o<\/span><\/p>\n<\/span>
objects += another.o<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc758 \uacb0\uacfc\ub85c objects\ub294 'main.o foo.o bar.o utils.o another.o'\uac00 \ub41c\ub2e4.<\/span><\/p>\n<\/span>
\uc704\uc758 \uc608\ub294 \ub2e4\uc74c\uacfc \ube44\uc2b7\ud55c\ub2e4 :<\/span><\/p>\n<\/span>
objects = main.o foo.o bar.o utils.o<\/span><\/p>\n<\/span>
objects = $(objects) another.o<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ubcc0\uc218\uac00 \uc544\uc9c1 \uc815\uc758\ub418\uc9c0 \uc54a\uc740 \uacbd\uc6b0 '+='\ub294 '='\uc640 \uac19\uc774 \uc791\ub3d9\ud55c\ub2e4. \uc989 \uc21c\ud658\ud3bc\uce68 \ubcc0\uc218\ub97c \uc815\uc758\ud558\ub294 \uac83\uc774\ub2e4. \ud558\uc9c0\ub9cc \uc774\ubbf8 \uc815\uc758\ub418\uc5b4 \uc788\ub294 \uacbd\uc6b0\uc5d0\ub294 \uadf8 \ubcc0\uc218\uac00 \uc560\ucd08\uc5d0 \uc5b4\ub5bb\uac8c \uc815\uc758\ub418\uc5c8\ub294\uc9c0\uc5d0 \ub530\ub77c \ubcc0\uc218 \uc885\ub958\uac00 \ub2ec\ub77c\uc9c4\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
'+='\ub97c \ud1b5\ud574 \ubcc0\uc218 \uac12\uc744 \ucca8\uac00\ud560 \ub54c make\ub294 \uc6d0\ub798 \uac12\uc5d0 \ub2e4\ub978 \uac12\uc744 \ud3ec\ud568\uc2dc\ud0a4\ub294 \ud615\ud0dc\ub97c \ucde8\ud55c\ub2e4. \uc560\ucd08\uc5d0 \ubcc0\uc218\uac00 \n':='(\ub2e8\uc21c\ud3bc\uce68)\ub97c \ud1b5\ud574 \uc815\uc758\ub418\uc5c8\ub2e4\uba74 '+=' \ub610\ud55c ':=' \ubc29\uc2dd\uc73c\ub85c \ub367\ubd99\uc5ec\uc9c0\ub294\ub370 \uc774\ub294 \uac12\uc774 \ub367\ubd99\uc5ec\uc9c0\uae30 \uc804\uc5d0 \ud3bc\uccd0\uc9d0\uc744 \uc758\ubbf8\ud55c\ub2e4.\n \uc989 :<\/span><\/p>\n<\/span>
variable := value<\/span><\/p>\n<\/span>
variable += more<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ub294 \ub2e4\uc74c\uacfc \uc644\uc804\ud788 \ub3d9\uc77c\ud558\ub2e4.<\/span><\/p>\n<\/span>
variable := value<\/span><\/p>\n<\/span>
variable := $(variable) more<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc774\uc640\ub294 \ub2ec\ub9ac \ubcc0\uc218\uac00 \uc560\ucd08\uc5d0 '='(\uc21c\ud658\ud3bc\uce68)\uc5d0 \uc758\ud574 \uc815\uc758\ub418\uc5c8\ub2e4\uba74 \uc870\uae08 \ub2e4\ub978 \ubc29\uc2dd\uc73c\ub85c \ucc98\ub9ac\ub41c\ub2e4. \uc21c\ud658\ud3bc\uce68 \ubcc0\uc218\uac00 \uc815\uc758 \ub420\uc5c8\uc744 \ub54c \uc774 \uac12\uc740 \uc989\uc2dc \ud3bc\uccd0\uc9c0\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \ub098\uc911\uc5d0 \uadf8 \ubcc0\uc218\uc5d0 \ub300\ud574 \ucc38\uc870\ub420 \ub54c \ud3bc\uccd0\uc9c4\ub2e4.  \uc989 :<\/span><\/p>\n<\/span>
variable = value<\/span><\/p>\n<\/span>
variable += more<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ub294 temp\ub77c\ub294 \ubcc0\uc218\uac00 \uc2e4\uc81c\ub85c \uc815\uc758\ub41c\uac8c \uc544\ub2c8\ub77c\ub294 \uac83\ub9cc \ube7c\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4\uace0 \ud560 \uc218 \uc788\ub2e4.<\/span><\/p>\n<\/span>
temp = value<\/span><\/p>\n<\/span>
variable = $(temp) more<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc911\uc694\ud55c \ubb38\uc81c\ub294 \ucc98\uc74c \uc815\uc758\ud55c \ubcc0\uc218\uc5d0 \ub2e4\ub978 \ubcc0\uc218 \ucc38\uc870\uac00 \ud3ec\ud568\ub418\uc5b4 \uc788\uc744 \ub54c \uc0dd\uae34\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>
CFLAGS = $(include) -0<\/span><\/p>\n<\/span>
...<\/span><\/p>\n<\/span>
CFLAGS += -pg # enable profiling<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uccab\ud589\uc758 CFLAGS\uac00 \ub2e4\ub978 \ubcc0\uc218 \ucc38\uc870 $(inlcude)\ub97c \ud3ec\ud568\ud558\uace0 \uc788\ub2e4. '='\ub97c \uc0ac\uc6a9\ud588\ub2e4\ub294 \uac83\uc740 \uc774 \ubcc0\uc218\uac00 \uc21c\ud658\ud3bc\uce68 \n\ubcc0\uc218\uc774\uace0 make\uac00 \uc774 \ubcc0\uc218\uc758 \uc815\uc758\ub97c \ucc98\ub9ac\ud560\ub54c\ub294 '$(include) -0'\uac00 \uc544\uc9c1 \ud3bc\uccd0\uc9c0\uc9c0 \uc54a\uc74c\uc744 \uc758\ubbf8\ud55c\ub2e4. \uadf8\ub7ec\ubbc0\ub85c \ninclude\ub294 CFLAGS\uac00 \uc774\ud6c4\uc5d0 \uc5b4\ub514\uc120\uac00 \ucc38\uc870\ub418\uae30 \uc804\uae4c\uc9c0\ub9cc \uc815\uc758\ub418\uba74 \ubb38\uc81c\uac00 \uc5c6\ub2e4. \uc5ec\uae30\uc11c \ub9cc\uc57d \ub2e4\uc74c\uacfc \uac19\uc774 \uac12\uc744 \ucd94\uac00\ud558\uba74 \n\uc5b4\ub5bb\uac8c \ub420\uae4c?<\/span><\/p>\n<\/span>
CFLAGS := $(CFLAGS) -pg # enable profiling<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc774\ub294 \ube44\uc2b7\ud558\uae30\ub294 \ud558\uc9c0\ub9cc \uc6b0\ub9ac\uac00 \uc6d0\ud558\ub294\uac83\uacfc\ub294 \ub2e4\ub974\ub2e4. ':='\ub97c \uc0ac\uc6a9\ud588\uc73c\ubbc0\ub85c CFLAGS\ub294 \ub2e8\uc21c\ud3bc\uce68 \ubcc0\uc218\uac00 \ub418\uc5c8\uace0 \uc774\ub294 \nmake\ub85c \ud558\uc5ec\uae08 \ub2f9\uc7a5 '$(CFALGS) -pg'\ub97c \ud3bc\uce58\ub3c4\ub85d \ud55c\ub2e4. \ub9cc\uc57d include\uac00 \uc544\uc9c1 \uc815\uc758 \ub418\uc5b4\uc788\uc9c0 \uc54a\ub2e4\uba74 \uc774 \ubcc0\uc218\ub294 \n\ub2e8\uc9c0 '-0 -pg' \uac12\uc744 \uac16\uac8c \ub420\uac83\uc774\ub2e4. \ud558\uc9c0\ub9cc '+='\ub97c \uc774\uc6a9\ud558\uba74 CFLAGS\ub294 \uc544\uc9c1 \ud3bc\uccd0\uc9c0\uc9c0 \uc54a\uc740 \uc0c1\ud0dc\ub97c \uc720\uc9c0\ud558\ub2e4\uac00 \uc774\ud6c4\uc5d0 \ninclude\uac00 \uc815\uc758\ub418\uba74 \uc815\uc0c1\uc801\uc73c\ub85c \uc774\uc6a9\ub420 \uc218 \uc788\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.7 override \uc9c0\uc2dc\uc790<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ub9cc\uc57d \uba85\ub839\ud589\uc5d0\uc11c \uba85\ub839 \uc635\uc158\uc73c\ub85c \ubcc0\uc218\uac12\uc744 \ud560\ub2f9\ud558\uba74 makefile \ub0b4\uc758 \uc815\uc0c1\uc801\uc778 \ubcc0\uc218\uac12 \ud560\ub2f9\uc740 \ubaa8\ub450 \ubb34\uc2dc\ub41c\ub2e4. \ub9cc\uc57d\uc5d0 \uba85\ub839\ud589 \n\uc635\uc158\uc73c\ub85c \ubcc0\uc218\uac00 \uc124\uc815\ub418\uc5c8\uc5b4\ub3c4 makefile \ub0b4\uc5d0\uc11c \ub2e4\uc2dc \ud560\ub2f9\ud574\uc11c \uc0ac\uc6a9\ud558\uace0 \uc2f6\uc740 \uacbd\uc6b0\uac00 \uc788\ub294\ub370 \uc774\ub54c override \uc9c0\uc2dc\uc790\ub97c \n\uc0ac\uc6a9\ud55c\ub2e4.<\/span><\/p>\n<\/span>
override <\/span>variable<\/span><\/em> = <\/span>value<\/span><\/em><\/p>\n<\/span>
\ub610\ub294<\/span><\/p>\n<\/span>
override <\/span>variable<\/span><\/em> := <\/span>value<\/span><\/em><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uba85\ub839\ud589\uc5d0\uc11c \uc815\uc758\ub41c \ubcc0\uc218\uc5d0 \ub2e4\ub978\uac12\uc744 \ucca8\ubd80\ud558\uace0 \uc2f6\ub2e4\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/span><\/p>\n<\/span>
override <\/span>variable<\/span><\/em> += <\/span>more text<\/span><\/em><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc608\ub97c \ub4e4\uc5b4 C \ucef4\ud30c\uc77c\ub7ec\ub97c \uc2e4\ud589\ud560 \ub54c \uba85\ub839\ud589 \ubcc0\uc218\uc815\uc758\uc744 \ud1b5\ud574 \uadf8\ub54c \uadf8\ub54c \uc6d0\ud558\ub294 \uc635\uc158\uc744 \uc0ac\uc6a9\ud558\uc9c0\ub9cc  '-g' \uc635\uc158\ub9cc\uc740 \ud56d\uc0c1 \uc0ac\uc6a9\ud558\uae38 \uc6d0\ud55c\ub2e4\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758 \ud574 \uc8fc\uba74\ub41c\ub2e4 :<\/span><\/p>\n<\/span>
override CFLAGS += -g<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.8 \ubcf5\uc218 \ud589 \ubcc0\uc218 \uc815\uc758\ud558\uae30<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ub610\ud558\ub098\uc758 \ubcc0\uc218\uac12 \ud560\ub2f9 \ubc29\ubc95\uc740 define \uc9c0\uc2dc\uc790\ub97c \uc0ac\uc6a9\ud558\ub294\uac83\uc774\ub2e4. \uc774 \ubc29\ubc95\uc740 newline \ubb38\uc790\ub97c \ud5c8\uc6a9\ud558\uae30 \ub54c\ubb38\uc5d0 canned \uba85\ub839\uc774\ub098 eval \ud568\uc218 \uc0ac\uc6a9\uc744 \uc704\ud55c makefile \ubb38\ubc95 \uc139\uc158\uc5d0 \uc720\uc6a9\ud558\ub2e4.<\/span><\/p>\n<\/span>
define \uc9c0\uc2dc\uc790\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\ud0dc\ub85c \uc0ac\uc6a9\ub41c\ub2e4 :<\/span><\/p>\n<\/span>
define variable =<\/span><\/p>\n<\/span>
...<\/span><\/p>\n<\/span>
endef<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc77c\ubc18\uc801\uc778 \ubcc0\uc218\uac12\uc740 newline \ubb38\uc790\ub97c \ud3ec\ud568\ud560 \uc218 \uc5c6\uc73c\ub098 define \uc9c0\uc2dc\uc790 \ub0b4\uc5d0 \uc788\ub294 newline \ubb38\uc790\ub294 \ubcc0\uc218\uac12\uc758 \uc77c\ubd80\uac00 \ub41c\ub2e4. \ud558\uc9c0\ub9cc \ub9c8\uc9c0\ub9c9 endef \uc9c1\uc804\uc758 newline \uc740 \ubb34\uc2dc\ub41c\ub2e4.<\/span><\/p>\n<\/span>
\ub2e4\uc74c\uc758 \uc815\uc758\uac00 :<\/span><\/p>\n<\/span>
define two-lines =<\/span><\/p>\n<\/span>
echo foo<\/span><\/p>\n<\/span>
echo $(bar)<\/span><\/p>\n<\/span>
endef<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc2e4\uc81c recipe\uc5d0 \uc0ac\uc6a9\ub418\uba74 \uae30\ub2a5\uc801\uc73c\ub85c \ub2e4\uc74c\uacfc \ub3d9\uc77c\ud558\ub2e4 :<\/span><\/p>\n<\/span>
two-lines = echo foo; echo $(bar)<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc138\ubbf8\ucf5c\ub860\uc5d0 \uc758\ud574 \ubd84\ub9ac\ub41c \uba85\ub839\uc740 \uc11c\ub85c \ub2e4\ub978 \uc258 \uba85\ub839\uc73c\ub85c \ud589\ub3d9\ud55c\ub2e4. \ud558\uc9c0\ub9cc \uc11c\ub85c \ub2e4\ub978 \ud589\uc73c\ub85c \ubd84\ub9ac\ub41c \uba85\ub839\uc740 \ub3c5\ub9bd\uc801\uc778 \ub450\uac1c\uc758 \uc258\uc5d0 \uc758\ud574 \uae30\ub3d9\ub428\uc744 \uba85\uc2ec\ud558\uc790.<\/span><\/p>\n<\/span>
\uba85\ub839\ud589\uc5d0 \uc758\ud574 \uc8fc\uc5b4\uc9c4 \ubcc0\uc218\uc5d0 \uc6b0\uc120\ud558\ub294 \ubcc0\uc218\ub97c \uc815\uc758\ud558\uae30 \uc704\ud574 override \uc9c0\uc2dc\uc790\ub97c \uc0ac\uc6a9\ud55c\ub2e4.<\/span><\/p>\n<\/span>
override define two-lines =<\/span><\/p>\n<\/span>
foo<\/span><\/p>\n<\/span>
$(bar)<\/span><\/p>\n<\/span>
endef<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.9 \ubcc0\uc218 \uc815\uc758 \ubb34\ud6a8\ud654\ud558\uae30<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ubcc0\uc218\ub97c \uc9c0\uc6b0\uae30 \uc704\ud574\uc11c\ub294 \ube48\ubb38\uc790\ub97c \ud560\ub2f9\ud558\uba74 \ub41c\ub2e4. \ube48\ubb38\uc790 \ubcc0\uc218\uc758 \uacbd\uc6b0 \uc815\uc758\ub418\uc9c0 \uc54a\uc558\uac74 \uc815\uc758\ub418\uc5c8\uac74 \ud3bc\uce68\uc5d0 \uc788\uc5b4\uc11c\uc758 \uacb0\uacfc\ub294 \n\ub3d9\uc77c\ud558\ub2e4. \ud558\uc9c0\ub9cc flavor \ud568\uc218\ub098 origin \ud568\uc218\ub97c \uc0ac\uc6a9\ud588\uc744 \ub54c \uc815\uc758\ub418\uc9c0 \uc54a\uc740 \uacbd\uc6b0\uc640 \ube48\ubb38\uc790\ub85c \uc138\ud305\ub41c \uacbd\uc6b0\ub294 \ub2e4\ub978 \uacb0\uacfc\ub97c \n\ub9cc\ub4e0\ub2e4. <\/span><\/p>\n<\/span>
foo := foo<\/span><\/p>\n<\/span>
bar = bar<\/span><\/p>\n<\/span>
undefine foo<\/span><\/p>\n<\/span>
undefine bar<\/span><\/p>\n<\/span>
$(info $(origin foo))<\/span><\/p>\n<\/span>
$(info $(flavor bar))<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc774 \uc608\ub294 \ubaa8\ub450 'undefined'\ub97c \ud504\ub9b0\ud2b8\ud55c\ub2e4.<\/span><\/p>\n<\/span>
\uba85\ub839\ud589 \ubcc0\uc218\ub97c undefine\ud558\uace0 \uc2f6\ub2e4\uba74 override \uc9c0\uc2dc\uc790\ub97c \uc0ac\uc6a9\ud558\uba74 \ub41c\ub2e4.<\/span><\/p>\n<\/span>
override undefine CFLAGS<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.10 \ud658\uacbd \ubcc0\uc218<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
make\uac00 \uc0ac\uc6a9\ud558\ub294 \ubcc0\uc218 \uc911\uc5d0\ub294 \ud658\uacbd\uc5d0\uc11c \uac74\ub108\uc628\uac83\ub4e4\ub3c4 \uc788\ub2e4. \ud658\uacbd\ubcc0\uc218\ub294 make\uac00 \uc2dc\uc791\ud560 \ub54c \ub118\uaca8 \ubc1b\uac8c \ub418\ub294\ub370 \ub9cc\uc57d \nmakefile \ub0b4\uc5d0\ub098 \uba85\ub839\ud589\uc744 \ud1b5\ud574 \uac19\uc740 \uc774\ub984\uc758 \uba74\uc218\uac00 \uba85\uae30\ub41c\ub2e4\uba74 \uc774\ub4e4\uc774 \ud658\uacbd \ubcc0\uc218\uc5d0 \uc6b0\uc120\ud55c\ub2e4. \ud558\uc9c0\ub9cc '-e' \ud50c\ub798\uadf8\ub97c \uc0ac\uc6a9\ud55c\n \uacbd\uc6b0\uc5d0\ub294 \ud658\uacbd\ubcc0\uc218\uac00 \uc774\ub4e4\uc5d0 \uc6b0\uc120\ud558\uac8c \ub41c\ub2e4. \uc2e4\uc81c \uc0ac\uc6a9\uc740 \uc548\ud558\ub294 \ud3b8\uc774 \uc88b\uc74c.<\/span><\/p>\n<\/span>
\uc608\ub97c \ub4e4\uc5b4 \ud658\uacbd\uc5d0\uc11c CFLAGS \ubcc0\uc218\ub97c \uc138\ud305\ud55c \ud6c4 \ub300\ubd80\ubd84\uc758 makefile \ub0b4\uc758 \ubaa8\ub4e0 C \ucef4\ud30c\uc77c\ub7ec\uac00 \uc774\ub97c \uc0ac\uc6a9\ud558\uac8c \ud560 \uc218 \n\uc788\ub2e4. make \uac00 recipe\ub97c \uc2e4\ud589\ud560 \ub54c makefile \ub0b4\uc5d0 \uc815\uc758\ub41c \ubcc0\uc218\ub4e4\uc740 \uac01 \uc258\uc758 \ud658\uacbd\uc18d\uc73c\ub85c \ud3ec\ud568\ub41c\ub2e4. \uc774 \ubcc0\uc218\ub97c \ud558\uc704 \nmake\ub85c \uc804\ub2ec \ud560 \uc218\uac00 \uc788\ub294\ub370 \uae30\ubcf8\uc801\uc73c\ub85c \ud658\uacbd\ubcc0\uc218\uc640 \uba85\ub839\ud589\uc5d0\uc11c \uc815\uc758\ub41c \ubcc0\uc218\ub9cc\uc774 \uc21c\ud658 \uc258\uc774 \uae30\ub3d9\ud560 \ub54c \uc804\ub2ec\ub41c\ub2e4. \ub2e4\ub978 \ubcc0\uc218\uc5d0 \n\ub300\ud574\uc11c\ub294 export \ub97c \ud1b5\ud574 \uc804\ub2ec\ud560 \uc218 \uc788\ub2e4.<\/span><\/p>\n<\/span>
\ud658\uacbd\ubcc0\uc218\uc758 \ub2e4\ub978 \uc6a9\ub3c4\uc758 \uc0ac\uc6a9\uc740 \ucd94\ucc9c\ud560 \ub9cc\ud558\uc9c0 \uc54a\ub2e4. \uc65c\ub0d0\uba74 makefile\uc774 \uc678\ubd80\uc5d0\uc11c \ub4e4\uc5b4\uc628 \ud658\uacbd\ubcc0\uc218\uc5d0 \ub108\ubb34 \uc88c\uc9c0\uc6b0\uc9c0\ub418\ub294\uac74 \n\ubc14\ub78c\uc9c1\ud558\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc774\ub2e4. \ud658\uacbd\ubcc0\uc218\ub77c\ub294 \uac83\uc740 \uc720\uc800\ub4e4 \ub9c8\ub2e4  \ub2e4\ub97c \uc218 \uc788\uc5b4 \uac19\uc740 makefile\uc5d0 \ub300\ud574 \ub2e4\ub978 \uacb0\uacfc\ub97c \uc57c\uae30\ud560 \uc218\ub3c4 \n\uc788\ub2e4.<\/span><\/p>\n<\/span>
\ube44\uc2b7\ud55c \ubb38\uc81c\uac00 SHELL \ubcc0\uc218\ub97c \uc0ac\uc6a9\ud560 \ub54c \uc0dd\uae34\ub2e4. \uc774 \uc77c\ubc18\uc801\uc73c\ub85c \ud658\uacbd\ub0b4\uc5d0\uc11c \uc0ac\uc6a9\uc790\uae30 \uc0ac\uc6a9\uc911\uc778 \uc258\uc744 \uac00\ub9ac\ud0a8\ub2e4. \uadf8\ub7ec\ubbc0\ub85c \nmake\uc758 \uc218\ud589\uc5d0 \uc601\ud5a5\uc744 \uc8fc\ub294 \uc774\ub7f0 \ubcc0\uc218\ub97c \uc678\ubd80\uc5d0\uc11c \ubc1b\uc544\ub4e4\uc774\ub294 \uac83\uc740 \ubc14\ub78c\uc9c1\ud558\uc9c0 \uc54a\ub2e4. \uadf8\ub798\uc11c make\ub294 \ud2b9\ubcc4\ud55c \ubc29\ubc95\uc73c\ub85c SHELL\n \ud658\uacbd \ubcc0\uc218\ub97c \ub2e4\ub8ec\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.11 \ud0c0\uae43\uc5d0 \ud55c\uc815\ub41c(target-specific) \ubcc0\uc218\uac12<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc77c\ubc18\uc801\uc73c\ub85c \ubcc0\uc218\uac12\uc740 \uc5b4\ub514\uc5d0\ub098 \ud6a8\ub825\uc774 \ubbf8\uce58\uc9c0\ub9cc \uadf8 \uc608\uc678\ub85c\uc11c \uc790\ub3d9 \ubcc0\uc218\uac00 \uc788\ub2e4. \ub610 \ud558\ub098\uc758 \uc608\uc678\ub294 \ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218\uac12\uc778\ub370 \uc774\ub294 \ud0c0\uae43\uc5d0 \ub530\ub77c \uac19\uc740 \ubcc0\uc218\uc758 \uac12\uc774 \ub2e4\ub974\uac8c \ub418\ub294\uac83\uc744 \ub9d0\ud55c\ub2e4. \ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218\uac12\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uc124\uc815\ub418\ub294\ub370 :<\/span><\/p>\n<\/span>
target<\/span><\/em> ... : <\/span>variable-assignment<\/span><\/em><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc774 \ubcc0\uc218\uac12\uc740 export, override provate \ub4f1\uc744 \uc0ac\uc6a9\ud558\uc5ec \ud560\ub2f9\ud560 \uc218\ub3c4 \uc788\ub2e4. \ubcf5\uc218 \ud0c0\uae43\uc778 \uacbd\uc6b0\ub294 \uac01 \ud0c0\uae43\uc5d0 \ub530\ub978 \ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218\uac12\uc744 \ud560\ub2f9\ud558\uac8c \ub41c\ub2e4.<\/span><\/p>\n<\/span>
\ubcc0\uc218\uac12 \ud560\ub2f9\uc740 '=', ':=', '+=', '?=' \ub4f1 \uc5b4\ub5a4\uac83\uc744 \uc0ac\uc6a9\ud574\uc11c\ub3c4 \uac00\ub2a5\ud558\ub2e4.<\/span><\/p>\n<\/span>
\ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218\ub294 \ub2e4\ub978 makefile \ubcc0\uc218\ub4e4\uacfc \uac19\uc740 \uc6b0\uc120\uad8c\uc744 \uac00\uc9c4\ub2e4. \uba85\ub839\ud589\uc744 \ud1b5\ud574 \uc81c\uacf5\ub41c \ubcc0\uc218\ub294 \ub2e4\ub978\uac83\ub4e4 \ubcf4\ub2e4 \uc6b0\uc120\ud558\uba70 override \uc9c0\uc2dc\uc790\ub97c \uc0ac\uc6a9\ud574 \uc774\ub97c \uac70\uc2a4\ub97c \uc218 \uc788\uac8c \ud574\uc900\ub2e4. <\/span><\/p>\n<\/span>
\ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218\uc5d0 \ud2b9\ubcc4\ud55c \ud2b9\uc131\uc774 \uc788\ub294\ub370 \uc774\ub294 \ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218\uac00 \uc815\uc758\ub418\uba74 \uadf8 \ubcc0\uc218\uac12\uc740 \ud574\ub2f9 \ud0c0\uae43\uc758 prerequisite\ub4e4\uacfc \ub2e4\uc2dc \uadf8\ub4e4\uc758 prerequisite\uc5d0\uae4c\uc9c0 \ud6a8\ub825\uc744 \ubbf8\uce5c\ub2e4\ub294 \uac83\uc774\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>
prog : CFLAGS = -g<\/span><\/p>\n<\/span>
prog : prog.o foo.o bar.o<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ube44\ub85d CFLAGS\ub294 prog\ub77c\ub294 \ud0c0\uae43\uc5d0\uc11c \uac12\uc774 \ud560\ub2f9\ub418\uc5c8\uc9c0\ub9cc prog.o, foo.o, bar.o\ub97c \ub9cc\ub4e4\uae30 \uc704\ud55c recipe\uc5d0\ub3c4 \uac19\uc740 \ud6a8\uacfc\ub97c \ubc1c\ud718\ud558\uac8c \ub41c\ub2e4.<\/span><\/p>\n<\/span>
\ub9cc\uc57d \ud558\ub098\uc758 prerequisite \uc774 \uc5ec\ub7ec \ud0c0\uae43\uc758 prerequisite\uc73c\ub85c \uc4f0\uc774\ub294 \uacbd\uc6b0 \ucc98\uc74c \uc0dd\uc131\ub418\ub294 \ud0c0\uae43\uc758 \ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218 \uac12\uc774 prerequisite\uc5d0 \uacc4\uc2b9\ub418\uace0 \ub098\uba38\uc9c0 \ud0c0\uae43\uc758 \uac12\uc740 \ubb34\uc2dc\ub41c\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.12 \ud328\ud134-\ud55c\uc815(pattern-specific) \ubcc0\uc218\uac12<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ud328\ud134-\ud55c\uc815 \ubcc0\uc218\ub294 \ud328\ud134\uc5d0 \ub9de\ub294 \ud0c0\uae43\uc5d0 \ubcc0\uc218\uac12\uc744 \ud560\ub2f9\ud558\ub294 \uac83\uc774\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
pattern<\/span><\/em> ... : <\/span>variable-assignment<\/span><\/em><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ud328\ud134\uc740 %-pattern \ud615\uc2dd\uc774\uba70 \ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218\uac12\uc5d0\uc11c\ucc98\ub7fc \uac00\ub2a5\ud55c \ud560\ub2f9 \ubc29\ubc95\uc744 \ubaa8\ub450 \uc0ac\uc6a9\uac00\ub2a5\ud558\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>
%.o : CFLAGS = -0<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\ub294 %.o \ud328\ud134\uc5d0 \ub9de\ub294 \ubaa8\ub4e0 \ud0c0\uae43\uc5d0 \ub300\ud574 CFLAGS \uc5d0 '-0'\uc744 \ud560\ub2f9\ud55c\ub2e4.<\/span><\/p>\n<\/span>
\ub9cc\uc57d \ud558\ub098\uc758 \ud0c0\uae43\uc774 \uc5ec\ub7ec\uac1c\uc758 \ud328\ud134\uacfc \uc77c\uce58\ud558\uba74 \uc5b4\ub5bb\uac8c \ub418\ub098? \uc774\ub7f0\ub54c\ub294 \ub354\uae34 stem\uc744 \uac16\ub294 \ud328\ud134-\ud55c\uc815 \ubcc0\uc218\uac00 \ucc44\ud0dd\ub41c\ub2e4. \ub2e4\uc2dc \ub9d0\ud574 \uc880\ub354 \uc790\uc138\ud55c \ubcc0\uc218\uac12\uc774 \ucc44\ub301\ub418\ub294 \uac83\uc774\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>
%.o: %.c<\/span><\/p>\n<\/span>
$(CC) -c $(CFLAGS) $(CPPFLAGS) $< -o $@<\/span><\/p>\n<\/span>
lib\/%.o : CFLAGS := -fPIC -g<\/span><\/p>\n<\/span>
%.o : CFLAGS := -g<\/span><\/p>\n<\/span>
all : foo.o lib\/bar.o<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc774 \uc608\uc5d0\uc11c lib\/bar.o\ub97c \uac31\uc2e0\ud558\uae30 \uc704\ud574\uc11c\ub294 \uccab\ubc88\uc9f8 CFLAGS \ubcc0\uc218\uac12\uc774 \uc4f0\uc778\ub2e4. \uc77c\uce58\ub41c \ud328\ud134\uc774 \uac19\uc740 \uae38\uc774\uc758 stem\uc744 \uac16\uc744 \ub54c\ub294 makefile\uc5d0\uc11c \uc815\uc758\ub41c \uc21c\uc11c\ub85c \uacb0\uc815\ud55c\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.13 \uc0c1\uc18d \uc81c\ud55c\ud558\uae30<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc55e\uc5d0\uc11c \uc5b8\uae09\ud588\ub4ef\uc774 make \ubcc0\uc218\ub4e4\uc740 prerequisite\uc5d0 \uc0c1\uc18d\ub41c\ub2e4. \uc774\ub7f0 \ud2b9\uc131\uc744 \uc774\uc6a9\ud574 prerequisite \uc774 \uc5b4\ub290 \n\ud0c0\uae43\uc5d0 \uc758\ud574 \uae30\ub3d9\ub418\ub294\uac00\uc5d0 \ub530\ub77c \uadf8 prerequisite\uc758 \ud589\ub3d9\uc744 \ubcc0\uacbd\ud560 \uc218 \uc788\ub2e4. \uc608\ub97c \ub4e4\uc5b4 debug\ub77c\ub294 \uc774\ub984\uc758 \ud0c0\uae43\uc5d0 \uc815\uc758\ub41c\n \ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218\ub294 'make debug'\ub97c \uc2e4\ud589\ud558\uba74 debug\uc758 \ubaa8\ub4e0 prerequisite\uc5d0 \uc0c1\uc18d\ub41c\ub2e4. \ubc18\uba74 'make \nall'\uc744 \uc2e4\ud589\ud558\uba74 \uc774 \ud0c0\uae43-\ud55c\uc815 \ubcc0\uc218\uac00 \uc815\uc758\ub418\uc9c0 \uc54a\uc74c\uc73c\ub85c\uc368 prerequisite\uc758 \uc218\ud589\uc5d0\ub3c4 \ubcc0\ud654\uac00 \uc0dd\uae38 \uc218 \uc788\ub2e4.<\/span><\/p>\n<\/span>
\uc885\uc885 \uc774 \ubcc0\uc218\uac00 \uc0c1\uc18d\ub418\ub294 \uac83\uc744 \uc6d0\uce58 \uc54a\uc744 \uc218\ub3c4 \uc788\ub2e4. \uc774 \ub54c private \ubcc0\ud658\uc790\ub97c \uc0ac\uc6a9\ud558\uba74 \ub418\ub294\ub370 \uc774 \ubcc0\uacbd\uc790\ub294 \ubaa8\ub4e0 \ubcc0\uc218 \n\ud560\ub2f9\uc2dc \uc0ac\uc6a9\uac00\ub2a5\ud558\uc9c0\ub9cc \ud0c0\uae43-\ud55c\uc815, \ud328\ud134-\ud55c\uc815 \ubcc0\uc218\uc5d0 \uc0ac\uc6a9\ud560 \ub54c \uac00\uc7a5 \uc758\ubbf8\uac00 \uc788\ub2e4. private \ubcc0\ud658\uc790\ub85c \uc9c0\uc2dc\ub41c \ubcc0\uc218\ub294 \uadf8 \n\ud0c0\uae43\uc5d0\uc11c\ub9cc \ubcf4\uc77c \ubfd0 prerequisite\uc5d0\ub294 \ubcf4\uc774\uc9c0 \uc54a\ub294\ub2e4. \ub9c8\ucc2c\uac00\ub9ac\ub85c \uc804\uc5ed\ubcc0\uc218\uac00 private\ub85c \uc9c0\uc815\ub418\uba74 \ub2e8\uc9c0 \uc804\uc5ed\uc5d0\uc11c\ub9cc \n\ubcf4\uc77c\ubfd0 \uac01 \ud0c0\uae43\uc5d0\uc11c \ubcf4\uc774\uc9c0 \uc54a\ub294\ub2e4. \uc989 \uc5b4\ub5a4 recipe\uc5d0\uc11c\ub3c4 \uc0ac\uc6a9\ub420 \uc218 \uc5c6\ub2e4\ub294 \ub73b\uc774\ub41c\ub2e4.<\/span><\/p>\n<\/span>
\uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>\n<\/span>
EXTRA_CFLAGS =<\/span><\/p>\n<\/span>
prog : private EXTRA_CFLAGS = -L\/usr\/local\/lib<\/span><\/p>\n<\/span>
prog : a.o b.o<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
\uc5ec\uae30\uc11c private \ubcc0\ud658\uc790\uac00 \uc788\uc73c\ubbc0\ub85c a.o\uc640 b.o\ub294 EXTRA_CFLAGS\ub97c \uc0c1\uc18d\ubc1b\uc9c0 \uc54a\ub294\ub2e4.<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
6.14 \ub2e4\ub978 \ud2b9\uc218 \ubcc0\uc218\ub4e4<\/span><\/strong><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
GNU make\ub294 \ud2b9\ubcc4\ud55c \uc131\uc9c8\uc744 \uac16\ub294 \uba87\uba87 \ubcc0\uc218\ub4e4\uc744 \uc9c0\uc6d0\ud55c\ub2e4.<\/span><\/p>\n<\/span>
MAKEFILE_LIST<\/span><\/p>\n<\/span>
make\uc5d0 \uc758\ud574 \ud574\uc11d\ub41c makefile\ub4e4\uc758 \uc774\ub984\uc744 \ud3ec\ud568\ud55c\ub2e4. \uccab\ubc88\uc9f8 \uc774\ub984\uc740 \ucc98\uc74c\uae30\ub3d9\ub41c Makefile\uc774 \ub420\uac83\uc774\ub2e4.<\/span><\/p>\n<\/span>
name1 := $(lastword $(MAKEFILE_LIST))<\/span><\/p>\n<\/span>
include inc.mk<\/span><\/p>\n<\/span>
name2 := $(lastword $(MAKEFILE_LIST))<\/span><\/p>\n<\/span>
all :<\/span><\/p>\n<\/span>
@echo name1= $(name1)<\/span><\/p>\n<\/span>
@echo name2= $(name2)<\/span><\/p>\n<\/span>
\uacb0\uacfc\ub294 <\/span><\/p>\n<\/span>
name1= Makefile<\/span><\/p>\n<\/span>
name2= inc.mk<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
.DEFAULT_GOAL<\/span><\/p>\n<\/span>
\uba85\ub839\ud589\uc5d0\uc11c \ubaa9\ud45c \ud0c0\uae43\uc744 \uba85\uae30\ud558\uc9c0 \uc54a\uc558\uc73c\ub54c \uc2e4\ud589\ud560 \ud0c0\uae43\uc744 \uc54c\ub824\uc900\ub2e4. \uc774 .DEFAULT_GOAL \ubcc0\uc218\uac12\uc744 \ud074\ub9ac\uc5b4\ud558\uac70\ub098 \ud2b9\uc815 \ud0c0\uae43\uba85\uc744 \uba85\uae30\ud568\uc73c\ub85c\uc368 \ubaa9\ud45c\ud0c0\uae43\uc744 \uc815\ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 :<\/span><\/p>
          # Query the default goal.\n          ifeq ($(.DEFAULT_GOAL),)\n            $(warning no default goal is set)\n          endif  \n          .PHONY: foo\n          foo: ; @echo $@          \n          $(warning default goal is $(.DEFAULT_GOAL))          \n          # Reset the default goal.\n          .DEFAULT_GOAL :=          \n          .PHONY: bar\n          bar: ; @echo $@          \n          $(warning default goal is $(.DEFAULT_GOAL))          \n          # Set our own.\n          .DEFAULT_GOAL := foo\n<\/span><\/pre>\n\n\n\n\n<\/span>
 <\/span><\/p>\n<\/span>
\uc774 \uacb0\uacfc\ub294 :<\/span><\/p>\n<\/span>
no default goal is set<\/span><\/p>\n<\/span>
default goal is foo<\/span><\/p>\n<\/span>
default goal is bar<\/span><\/p>\n<\/span>
foo<\/span><\/p>\n<\/span>
\uc774 \ubcc0\uc218\uc5d0 \uc5ec\ub7ec\uac1c\uc758 \ud0c0\uae43\uba85\uc744 \ud560\ub2f9\ud558\uba74 \uc5d0\ub7ec \ubc1c\uc0dd<\/span><\/p>\n<\/span>\n<\/span>
MAKE_RESTARTS<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
.RECIPEPREFIX<\/span><\/p>\n<\/span>
recipe\ub97c \uc2dc\uc791\ud574\uc57c\ud558\ub294 \uccab \ubb38\uc790\ub97c \uc124\uc815\ud55c\ub2e4. \uc774 \ubcc0\uc218\uac00 \uc124\uc815\ub418\uc9c0 \uc54a\uc73c\uba74 \uae30\ubcf8\uac12\uc778 \ud0ed\ubb38\uc790\uac00 recipe\uc758 \uccab\ubb38\uc790\uac00 \ub418\uc5b4\uc57c \ud568<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
.VARIABLES<\/span><\/p>\n<\/span>
\uc9c0\uae08\uae4c\uc9c0 \uc815\uc758\ub41c \ubaa8\ub4e0 \uc804\uc5ed \ubcc0\uc218\uc774\ub984\uc744 \ud568\uc720\ud55c\ub2e4. \ube48\ubb38\uc790 \ubcc0\uc218\uc640 \ube4c\ud2b8\uc778 \ubcc0\uc218\ub3c4 \ud3ec\ud568<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
.FEATURES<\/span><\/p>\n<\/span>
make\uac00 \uc9c0\uc6d0\ud558\ub294 \ud2b9\uc131<\/span><\/p>\n<\/span>
'archives'<\/span><\/p>\n<\/span>
'check-symlick'<\/span><\/p>\n<\/span>
'else-if'<\/span><\/p>\n<\/span>
'jobserver'<\/span><\/p>\n<\/span>
'second-expansion'<\/span><\/p>\n<\/span>
'order-only'<\/span><\/p>\n<\/span>
'target-specific'<\/span><\/p>\n<\/span>
 <\/span><\/p>\n<\/span>
.INCLUDE_DIRS<\/span><\/p>\n<\/span>
make\uac00 include\ud560 makefile\uc744 \ucc3e\uc544 \ud5e4\uba5c \ub514\ub809\ud1a0\ub9ac \ub9ac\uc2a4\ud2b8<\/span>
<\/p>","protected":false},"excerpt":{"rendered":"
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