이번에 컴퓨터 박살나서 새로 구매했다가 설정한다고 똥줄좀 탔는데.
아무튼, 센트리노 1.7GHz 노트북에서 하다가, 듀얼 코어로 넘어왔는데.
우리 개발하는건 규모가 작은 편이라 티가 별로 안난다.
1분 컴파일 하던게 40초로 줄어봤자... 티가 나야 말이지 ㄱ-
아무튼!
커널 컴파일 하신다고 소장님 전에 알려드린 make -j 옵션을 확인하시고
make clean
make
실행!
예전 같으면 한 30분 걸리던 녀석..
3분만에 끝났나? ㄱ-
소장님 : "헉? 벌써 끝난거야? 이상한데.. 아닌거 같은데 먼가 찜찜해"
구차니 : 저도 그렇게 생각합니다만.. 빠른게 좋은거죠 ^^;
사족 : 한페이지 넘는 cc 들에 입이 쩍!
(cc는 c compiler로 make 시에 컴파일을 위해 호출된다. 다르게 말하자면 동시에 20~30개가 넘는 녀석이 컴파일 중)
bogomips 로만은 1200(1.7Ghz) 5400x2(E5400) 일단 기본 스펙만으로는 9배 차이난다.
$ cat
/proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Pentium(R) 4 CPU 2.66GHz
stepping : 9
cpu MHz : 2659.968
cache size : 1024 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm
constant_tsc up pebs bts pni dtes64 monitor ds_cpl tm2 cid cx16 xtpr
lahf_lm
bogomips : 5319.93
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 48 bits virtual
power management:
$ cat
cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Pentium(R) M processor 1.20GHz
stepping : 8
cpu MHz : 1196.000
cache size : 2048 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
clflush dts acpi mmx fxsr sse sse2 ss tm pbe bts est tm2
bogomips : 4246.73
clflush size : 64
cache_alignment : 64
address sizes : 32 bits physical, 32 bits virtual
power management:
항상켜기
$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Pentium(R) M processor 1.20GHz
stepping : 8
cpu MHz : 1196.000
cache size : 2048 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
clflush dts acpi mmx fxsr sse sse2 ss tm pbe bts est tm2
bogomips : 5872.02
clflush size : 64
cache_alignment : 64
address sizes : 32 bits physical, 32 bits virtual
power management:
최대배터리
$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Pentium(R) M processor 1.20GHz
stepping : 8
cpu MHz : 1196.000
cache size : 2048 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
clflush dts acpi mmx fxsr sse sse2 ss tm pbe bts est tm2
bogomips : 2510.02
clflush size : 64
cache_alignment : 64
address sizes : 32 bits physical, 32 bits virtual
power management:
$ cat
/proc/cpuinfo
Processor : Intel XScale-PXA255 rev 6 (v5l)
BogoMIPS : 396.56
Features : swp half thumb fastmult edsp
CPU implementor : 0x69
CPU architecture: 5TE
CPU variant : 0x0
CPU part : 0x2d0
CPU revision : 6
Cache type : undefined 5
Cache clean : undefined 5
Cache lockdown : undefined 5
Cache unified : harvard
I size : 16384
I assoc : 16
I line length : 32
I sets : 32
D size : 16384
D assoc : 16
D line length : 32
D sets : 32
Hardware : TynuxBox-X Development Platform
Revision : 0000
Serial : 0000000000000000
shenzhen{bzhu}$ gmake -version
GNU Make version 3.71, by
Richard Stallman and Roland McGrath.
Copyright (C) 1988, 89, 90, 91, 92, 93, 94 Free Software Foundation,
Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
shenzhen{bzhu}$ make -version
GNU Make 3.80
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
-l library
Search the library named library when linking. (The second alternative with the library as a separate argu-
ment is only for POSIX compliance and is not recommended.)
It makes a difference where in the command you write this option; the linker searches and processes libraries
and object files in the order they are specified. Thus, foo.o -lz bar.o searches library z after file foo.o
but before bar.o. If bar.o refers to functions in z, those functions may not be loaded.
The linker searches a standard list of directories for the library, which is actually a file named libli-
brary.a. The linker then uses this file as if it had been specified precisely by name.
The directories searched include several standard system directories plus any that you specify with -L.
Normally the files found this way are library files---archive files whose members are object files. The
linker handles an archive file by scanning through it for members which define symbols that have so far been
referenced but not defined. But if the file that is found is an ordinary object file, it is linked in the
usual fashion. The only difference between using an -l option and specifying a file name is that -l sur-
rounds library with lib and .a and searches several directories.
-Ldir
Add directory dir to the list of directories to be searched for -l.
LIBRARY_PATH
The value of LIBRARY_PATH is a colon-separated list of directories, much like PATH. When configured as a
native compiler, GCC tries the directories thus specified when searching for special linker files, if it
can’t find them using GCC_EXEC_PREFIX. Linking using GCC also uses these directories when searching for
ordinary libraries for the -l option (but directories specified with -L come first).
아마 2.4와 2.6이 혼합되어 설치되어있고, 2.6이 정상설치가 되지 않은듯 싶다.
옵션에 따라서 이러한 오류가 발생했다.
# gcc py.c -I/usr/local/include/python2.6 -L/usr/local/lib/libpython2.6.a
/tmp/cc88iTD7.o: In function `main':
py.c:(.text+0x12): undefined reference to `Py_Initialize'
py.c:(.text+0x26): undefined reference to `PyRun_SimpleStringFlags'
py.c:(.text+0x2b): undefined reference to `Py_Finalize'
collect2: ld returned 1 exit status
# gcc py.c -I/usr/local/include/python2.6 -lpython2.6
/usr/local/lib/libpython2.6.a(posixmodule.o): In function
`posix_tmpnam':
./Modules/posixmodule.c:7180: warning: the use of `tmpnam_r' is
dangerous, better use `mkstemp'
/usr/local/lib/libpython2.6.a(posixmodule.o): In function
`posix_tempnam':
./Modules/posixmodule.c:7135: warning: the use of `tempnam' is
dangerous, better use `mkstemp'
/usr/local/lib/libpython2.6.a(signalmodule.o): In function
`timeval_from_double':
./Modules/signalmodule.c:106: undefined reference to `floor'
./Modules/signalmodule.c:107: undefined reference to `fmod'
./Modules/signalmodule.c:106: undefined reference to `floor'
./Modules/signalmodule.c:107: undefined reference to `fmod'
/usr/local/lib/libpython2.6.a(floatobject.o): In function `float_pow':
Objects/floatobject.c:972: undefined reference to `pow'
/usr/local/lib/libpython2.6.a(floatobject.o): In function
`float_divmod':
Objects/floatobject.c:856: undefined reference to `fmod'
/usr/local/lib/libpython2.6.a(floatobject.o): In function `float_rem':
Objects/floatobject.c:834: undefined reference to `fmod'
/usr/local/lib/libpython2.6.a(longobject.o): In function
`PyLong_FromString':
Objects/longobject.c:1610: undefined reference to `log'
Objects/longobject.c:1610: undefined reference to `log'
/usr/local/lib/libpython2.6.a(dynload_shlib.o): In function
`_PyImport_GetDynLoadFunc':
Python/dynload_shlib.c:94: undefined reference to `dlsym'
Python/dynload_shlib.c:130: undefined reference to `dlopen'
Python/dynload_shlib.c:141: undefined reference to `dlsym'
Python/dynload_shlib.c:133: undefined reference to `dlerror'
/usr/local/lib/libpython2.6.a(thread.o): In function
`_pythread_pthread_set_stacksize':
Python/thread_pthread.h:519: undefined reference to
`pthread_attr_setstacksize'
/usr/local/lib/libpython2.6.a(thread.o): In function
`PyThread_release_lock':
Python/thread_pthread.h:374: undefined reference to `sem_post'
/usr/local/lib/libpython2.6.a(thread.o): In function
`PyThread_free_lock':
Python/thread_pthread.h:320: undefined reference to `sem_destroy'
/usr/local/lib/libpython2.6.a(thread.o): In function
`PyThread_allocate_lock':
Python/thread_pthread.h:296: undefined reference to `sem_init'
/usr/local/lib/libpython2.6.a(thread.o): In function
`PyThread_acquire_lock':
Python/thread_pthread.h:351: undefined reference to `sem_trywait'
Python/thread_pthread.h:349: undefined reference to `sem_wait'
/usr/local/lib/libpython2.6.a(thread.o): In function
`PyThread_start_new_thread':
Python/thread_pthread.h:171: undefined reference to
`pthread_attr_setstacksize'
Python/thread_pthread.h:181: undefined reference to `pthread_create'
Python/thread_pthread.h:197: undefined reference to `pthread_detach'
/usr/local/lib/libpython2.6.a(thread.o): In function
`PyThread_release_lock':
Python/thread_pthread.h:374: undefined reference to `sem_post'
Python/thread_pthread.h:374: undefined reference to `sem_post'
Python/thread_pthread.h:374: undefined reference to `sem_post'
/usr/local/lib/libpython2.6.a(thread.o): In function
`PyThread_allocate_lock':
Python/thread_pthread.h:296: undefined reference to `sem_init'
Python/thread_pthread.h:296: undefined reference to `sem_init'
/usr/local/lib/libpython2.6.a(posixmodule.o): In function
`posix_forkpty':
posixmodule.c:(.text+0x2653): undefined reference to `forkpty'
/usr/local/lib/libpython2.6.a(posixmodule.o): In function
`posix_openpty':
posixmodule.c:(.text+0x26fc): undefined reference to `openpty'
/usr/local/lib/libpython2.6.a(complexobject.o): In function `_Py_c_abs':
Objects/complexobject.c:214: undefined reference to `hypot'
/usr/local/lib/libpython2.6.a(complexobject.o): In function `_Py_c_pow':
Objects/complexobject.c:143: undefined reference to `hypot'
Objects/complexobject.c:144: undefined reference to `pow'
Objects/complexobject.c:145: undefined reference to `atan2'
Objects/complexobject.c:151: undefined reference to `cos'
Objects/complexobject.c:152: undefined reference to `sin'
Objects/complexobject.c:148: undefined reference to `exp'
Objects/complexobject.c:149: undefined reference to `log'
collect2: ld returned 1 exit status
