Code Smart - Makefile (special release)

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Code Smart, Don’t Code Hard

....

$ gcc -o hw2 main.c a.c b.c

$ gcc -c main.c # main.o
$ gcc -c a.c # a.o
$ gcc -c b.c # b.o
$ gcc -o hw2 main.o a.o b.o

....?
g++ -c -pipe -g -Wall -W -D_REENTRANT -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++
-I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtOpenGL -I/usr/include/qt4 -I../shared -I/usr/X11R6/
include -I. -o glwidget.o glwidget.cpp
include -I. -o main.o main.cpp
include -I. -o window.o window.cpp
include -I. -o qtlogo.o qtlogo.cpp
/usr/bin/moc-qt4 -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include/
qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtOpenGL -I/usr/include/qt4 -I../shared -I/usr/X11R6/include -I.
glwidget.h -o moc_glwidget.cpp
include -I. -o moc_glwidget.o moc_glwidget.cpp
/usr/bin/moc-qt4 -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include/
qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtOpenGL -I/usr/include/qt4 -I../shared -I/usr/X11R6/include -I.
window.h -o moc_window.cpp
include -I. -o moc_window.o moc_window.cpp
g++ -o hellogl glwidget.o main.o window.o qtlogo.o moc_glwidget.o moc_window.o -L/usr/lib -L/usr/X11R6/lib -lQtOpenGL -
lQtGui -lQtCore -lGLU -lGL -lpthread

Makefile
# #

targets: prerequisites
recipe
... }

Makefile
#

hw1: hw1.c
gcc -o hw1 hw1.c
echo “ ”

# ( )

main.o: main.c
gcc -c main.c
a.o: a.c
gcc -c a.c
b.o: b.c
gcc -c b.c
hw1: main.o a.o b.o
gcc -o hw1 main.o a.o b.o

CC = gcc

main.o: main.c
$(CC) -c main.c
a.o: a.c
$(CC) -c a.c
b.o: b.c
$(CC) -c b.c
hw1: main.o a.o b.o
$(CC) -o hw1 main.o a.o b.o

-
CC = gcc

pattern rule

prerequisite
%.o: %.c
$(CC) -c $<

hw1: main.o a.o b.o
$(CC) -o $@ main.o a.o b.o
target

CC = gcc
CFLAGS = -Wall -O2
OBJS = main.o a.o b.o
EXEC = hw1

%.o: %.c
$(CC) $(CFLAGS) -c $<

$(EXEC): $(OBJS)
$(CC) $(CFLAGS) -o $@ $(OBJS)

....
$ make
g++ -c -pipe -g -Wall -W -D_REENTRANT -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/
mkspecs/linux-g++ -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtOpenGL -I/usr/
include/qt4 -I../shared -I/usr/X11R6/include -I. -o glwidget.o glwidget.cpp
include/qt4 -I../shared -I/usr/X11R6/include -I. -o main.o main.cpp
include/qt4 -I../shared -I/usr/X11R6/include -I. -o window.o window.cpp
include/qt4 -I../shared -I/usr/X11R6/include -I. -o qtlogo.o qtlogo.cpp
/usr/bin/moc-qt4 -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/
usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtOpenGL -I/usr/include/qt4 -I../shared -I/usr/
X11R6/include -I. glwidget.h -o moc_glwidget.cpp
include/qt4 -I../shared -I/usr/X11R6/include -I. -o moc_glwidget.o moc_glwidget.cpp
/usr/bin/moc-qt4 -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/
usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtOpenGL -I/usr/include/qt4 -I../shared -I/usr/
X11R6/include -I. window.h -o moc_window.cpp
include/qt4 -I../shared -I/usr/X11R6/include -I. -o moc_window.o moc_window.cpp
...
...
g++ -o hellogl glwidget.o main.o window.o qtlogo.o moc_glwidget.o moc_window.o -L/usr/lib -L/usr/X11R6/lib -
lQtOpenGL -lQtGui -lQtCore -lGLU -lGL -lpthread
$ _

(CrBoy) <crboy@crboy.net>
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Code Smart - Makefile (special release)

Code Smart - Makefile (special release)

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