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2.2 A Simple Makefile    
=====================    
    
Here is a straightforward makefile that describes the way an executable    
file called `edit' depends on eight object files which, in turn, depend    
on eight C source and three header files.    
    
   In this example, all the C files include `defs.h', but only those    
defining editing commands include `command.h', and only low level files    
that change the editor buffer include `buffer.h'.    
    
     edit : main.o kbd.o command.o display.o \    
            insert.o search.o files.o utils.o    
             cc -o edit main.o kbd.o command.o display.o \    
                        insert.o search.o files.o utils.o    
    
     main.o : main.c defs.h    
             cc -c main.c    
     kbd.o : kbd.c defs.h command.h    
             cc -c kbd.c    
     command.o : command.c defs.h command.h    
             cc -c command.c    
     display.o : display.c defs.h buffer.h    
             cc -c display.c    
     insert.o : insert.c defs.h buffer.h    
             cc -c insert.c    
     search.o : search.c defs.h buffer.h    
             cc -c search.c    
     files.o : files.c defs.h buffer.h command.h    
             cc -c files.c    
     utils.o : utils.c defs.h    
             cc -c utils.c    
     clean :    
             rm edit main.o kbd.o command.o display.o \    
                insert.o search.o files.o utils.o    

一个简单的 makefile

Here is a straightforward makefile that describes the way an executable
file called `edit' depends on eight object files which, in turn, depend
on eight C source and three header files.

这里有一个很直接的makefile例子, 描述了个名为edit的可执行文件,

依赖于 8个目标文件,而这8个目标文件依赖于8个C源文件和3个头文件。

在这个例子中,所有的C文件都包含 defs.h, 但是只有那些定义了编辑命令的文件才会包含 command.h.

并且,只有一个改变编辑缓冲区的底层文件才包含 buffer.h。

edit : main.o kbd.o command.o display.o \
insert.o search.o files.o utils.o
cc -o edit main.o kbd.o command.o display.o \
insert.o search.o files.o utils.o

main.o : main.c defs.h
cc -c main.c
kbd.o : kbd.c defs.h command.h
cc -c kbd.c
command.o : command.c defs.h command.h
cc -c command.c
display.o : display.c defs.h buffer.h
cc -c display.c
insert.o : insert.c defs.h buffer.h
cc -c insert.c
search.o : search.c defs.h buffer.h
cc -c search.c
files.o : files.c defs.h buffer.h command.h
cc -c files.c
utils.o : utils.c defs.h
cc -c utils.c
clean :
rm edit main.o kbd.o command.o display.o \
insert.o search.o files.o utils.o
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