pi@raspberrypi ~/src/pch $ g++ -c stdafx.h -o stdafx.h.gch

pi@raspberrypi ~/src/pch $ ls -al

합계 4244

drwxr-xr-x 2 pi pi    4096  7월 30 00:58 .

drwxr-xr-x 9 pi pi    4096  7월 30 00:58 ..

-rw-r--r-- 1 pi pi      37  7월 30 00:58 1

-rw-r--r-- 1 pi pi      91  7월 30 00:58 a.cpp

-rw-r--r-- 1 pi pi      37  7월 30 00:58 stdafx.h

-rw-r--r-- 1 pi pi 4324036  7월 30 00:59 stdafx.h.gch

pi@raspberrypi ~/src/pch $ file stdafx.h.gch

stdafx.h.gch: GCC precompiled header (version 013) for C++

pi@raspberrypi ~/src/pch $ mv stdafx.h stdafx.h.bak

pi@raspberrypi ~/src/pch $ g++ a.cpp 

pi@raspberrypi ~/src/pch $ mv stdafx.h.gch stdafx.h.gch.bak

pi@raspberrypi ~/src/pch $ ls -al

합계 4248

drwxr-xr-x 2 pi pi    4096  7월 30 01:01 .

drwxr-xr-x 9 pi pi    4096  7월 30 00:58 ..

-rw-r--r-- 1 pi pi      91  7월 30 00:58 a.cpp

-rwxr-xr-x 1 pi pi    6492  7월 30 01:00 a.out

-rw-r--r-- 1 pi pi      37  7월 30 00:58 stdafx.h.bak

-rw-r--r-- 1 pi pi 4324036  7월 30 00:59 stdafx.h.gch.bak

pi@raspberrypi ~/src/pch $ g++ a.cpp

a.cpp:1:20: fatal error: stdafx.h: 그런 파일이나 디렉터리가 없습니다

compilation terminated.

pi@raspberrypi ~/src/pch $ gcc -x c++-header stdafx.h -o stdafx.h.gch

pi@raspberrypi ~/src/pch $ ls -al

합계 4248

drwxr-xr-x 2 pi pi    4096  7월 30 01:01 .

drwxr-xr-x 9 pi pi    4096  7월 30 00:58 ..

-rw-r--r-- 1 pi pi      91  7월 30 00:58 a.cpp

-rwxr-xr-x 1 pi pi    6492  7월 30 01:00 a.out

-rw-r--r-- 1 pi pi      37  7월 30 00:58 stdafx.h

-rw-r--r-- 1 pi pi 4324036  7월 30 01:01 stdafx.h.gch  

-x language

Specify explicitly the language for the following input files (rather than letting the compiler choose a default based on the file name suffix). This option applies to all following input files until the next -x option. Possible values for language are:

c  c-header  c-cpp-output

c++  c++-header  c++-cpp-output

objective-c  objective-c-header  objective-c-cpp-output

objective-c++ objective-c++-header objective-c++-cpp-output

assembler  assembler-with-cpp

ada

f77  f77-cpp-input f95  f95-cpp-input

java

-o file

Place output in file file. This applies regardless to whatever sort of output is being produced, whether it be an executable file, an object file, an assembler file or preprocessed C code.

If -o is not specified, the default is to put an executable file in a.out, the object file for source.suffix in source.o, its assembler file in source.s, a precompiled header file in source.suffix.gch, and all preprocessed C source on standard output.

[링크 : http://linux.die.net/man/1/gcc] 

pi@raspberrypi ~/src/pch $ gcc stdafx.h -o stdafx.h.gch

stdafx.h:1:18: fatal error: string: 그런 파일이나 디렉터리가 없습니다

compilation terminated.