[B! GCC] uokadaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

uokada id:uokada

GCCã«é–¢ã™ã‚‹uokadaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (7)

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ã²ã’ã½ã‚“ OSã¨ã‹ä½œã£ã¡ã‚ƒã†ã‹Mona- - å…±æœ‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŠä½œæ³•ã¾ã¨ã‚
ACã•ã‚“ã‹ã‚‰æ•™ãˆã¦ã„ãŸã ã„ãŸ Program Library HOWTO: http://www.linux.or.jp/JF/JFdocs/Program-Library-HOWTO/ éžå¸¸ã«ã‚ˆãã¾ã¨ã¾ã£ã¦ã„ã¦ç–‘å•ãŒæ°·è§£ã—ã¾ã—ãŸã€‚ é‡è¦ãã†ãªã¨ã“ã‚ã‚’å¼•ç”¨ã—ã¾ã™ã€‚ é™çš„ãƒ©ã‚¤ãƒ–ãƒ©ãƒª .aã¯é™çš„ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã€‚arã‚³ãƒžãƒ³ãƒ‰ã§ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã‚’ã¾ã¨ã‚ãŸã‚‚ã®ã€‚ é™çš„ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã¯ -l ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§ãƒªãƒ³ã‚¯ã‚’è¡Œã† å…±æœ‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒª ã™ã¹ã¦ã®å…±æœ‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã¯ã€Œsonameã€ã¨ã„ã†ç‰¹åˆ¥ãªåå‰ã‚’ã‚‚ã¤ã€‚ ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªålibxxx.so.ãƒãƒ¼ã‚¸ãƒ§ãƒ³ç•ªå· ãƒãƒ¼ã‚¸ãƒ§ãƒ³ç•ªå·ã¯ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ãƒ¼ã‚¹ãŒå¤‰ã‚ã£ãŸã¨ãã«å¤‰ã‚ã‚‹ã€‚ ã™ã¹ã¦ã®å…±æœ‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã¯ã€Œrealnameã€ã¨ã„ã†ç‰¹åˆ¥ãªåå‰ã‚’æŒã¤ã€‚ soname.ãƒžã‚¤ãƒŠãƒ¼ç•ªå·.ãƒªãƒªãƒ¼ã‚¹ç•ªå· ã€Œlinker nameã€ sonameã‹ã‚‰ãƒãƒ¼ã‚¸ãƒ§ãƒ³ç•ªå·ã‚’é™¤ã„ãŸã‚‚ã® ldconfig ã¯
uokada 2019/06/29
library

unix

gcc

linux
ãƒªãƒ³ã‚¯
Shared Object å…¥é–€
æœ€è¿‘ã® gcc ã ã¨ã‚·ãƒ³ãƒœãƒ«è§£æ±ºãŒã†ã¾ãã„ã‹ãªã„ã¨ã„ã‹ãªã„ã“ã¨ãŒã‚ã£ãŸã®ã§ã€ã¡ã‚‡ã£ã¨èª¿ã¹ã¾ã—ãŸã€‚ æ¬¡ã®ã‚ˆã†ãª 3ã¤ã®ã‚½ãƒ¼ã‚¹ãƒ•ã‚¡ã‚¤ãƒ«ãŒã‚ã£ãŸã¨ã—ã¦ã€ãƒ€ã‚¤ãƒŠãƒŸãƒƒã‚¯ãƒªãƒ³ã‚¯ã§ä½œã£ã¦ã¿ã¾ã—ã‚‡ã†ã€‚ `main.c` int foo(void); int main(void) { return foo() + 1; } `foo.c` int bar(void); int foo(void) { return bar() + 1; } `bar.c` int bar(void) { return 0; } shared object ã‚’ä½œã‚‹ã®ã«å¿…è¦ãªã®ã¯ã€ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚ã« `-fPIC` ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’ã¤ã‘ã‚‹ã“ã¨ã¨ã€ãƒªãƒ³ã‚¯æ™‚ã« `-shared` ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’ã¤ã‘ã‚‹ã“ã¨ã® 2ç‚¹ã§ã™ã€‚ $ gcc -fPIC -c -o bar.o bar.c $ gcc -shared -o libbar.so bar.o
uokada 2019/06/16
gcc

linux

library
ãƒªãƒ³ã‚¯
ã„ã‚„ãªãƒ–ãƒã‚°: Linux ã®å…±æœ‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ä½œã‚‹ã¨ã PIC ã§ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã™ã‚‹ã®ã¯ãªãœã‹
Linux ã®å…±æœ‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ä½œã‚‹ã¨ã PIC ã§ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã™ã‚‹ã®ã¯ãªãœã‹ é€šå¸¸ã€Linux ã®å…±æœ‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ä½œã‚‹ã¨ãã¯å„ .c ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ PIC (Position Independent Code) ã¨ãªã‚‹ã‚ˆã†ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã—ã¾ã™ã€‚ã—ã‹ã—ã€å®Ÿã¯ PIC ã§ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã—ãªãã¦ã‚‚å…±æœ‰ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã¯ä½œã‚Œã¾ã™ã€‚ãã‚Œã§ã¯ PIC ã«ã™ã‚‹æ„å‘³ã¯ã‚ã‚‹ã®ã§ã—ã‚‡ã†ã‹ã€‚ ã•ã£ããå®Ÿé¨“ã—ã¦ã¿ã¾ã™ã€‚ int func () { printf(""); printf(""); printf(""); } PIC ã§ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã™ã‚‹ã«ã¯ gcc ã« -fpic ã¾ãŸã¯ -fPIC ã‚’æ¸¡ã—ã¾ã™ã€‚-fpic ã®æ–¹ãŒå°ã•ãé«˜é€Ÿãªã‚³ãƒ¼ãƒ‰ã‚’ç”Ÿæˆã™ã‚‹å¯èƒ½æ€§ãŒã‚ã‚Šã¾ã™ãŒã€ãƒ—ãƒã‚»ãƒƒã‚µã«ã‚ˆã£ã¦ã¯ -fpic ã§ç”Ÿæˆã§ãã‚‹ GOT (Global Offset Table) ã®ã‚µã‚¤ã‚ºã«åˆ¶é™ãŒã‚ã‚Šã¾ã™ã€‚ä¸€æ–¹ã€-fPIC ã¯ã©ã®ãƒ—ãƒã‚»ãƒƒã‚µã§
uokada 2011/09/25
Library

GCC

linux

programming

PIC
ãƒªãƒ³ã‚¯
çŸ¥ã£ã¦ã„ã‚‹ã¨ä¾¿åˆ©ãª gcc ã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³
back GNU gcc ã‚’ä½¿ã†éš›ã«çŸ¥ã£ã¦ã„ã‚‹ã¨ä¾¿åˆ©ãªã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’æŒ™ã’ã¦ãŠãã¾ã™ã€‚ æ³¨æ„: ã“ã‚ŒãŒå…¨éƒ¨ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚gcc ã«ã¯ã€ã»ã‹ã«ã‚‚ ãƒ—ãƒã‚»ãƒƒã‚µä¾å˜ã®ç´°ã‹ã„ã‚ªãƒ—ã‚·ãƒ§ãƒ³ãŒå±±ã®ã‚ˆã†ã«ã‚ã‚Šã¾ã™ãŒã€ãã‚Œã‚‰ã¯ ãµã¤ã†ã‚ã¾ã‚Šåˆ©ç”¨ã—ãªã„ã®ã§çœç•¥ã—ã¾ã—ãŸã€‚ ä¸€èˆ¬çš„ãªã‚ªãƒ—ã‚·ãƒ§ãƒ³ -c, -o, -I, -g, -O, -L, -l çœç•¥ã€‚ãã‚Œãã‚‰ã„çŸ¥ã£ã¦ã‚‹ã“ã¨ã€‚ã¡ãªã¿ã« -L ã¨ -l ã¯ ld ã¸ã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§ã‚ã‚Šã€é †ç•ªãŒé‡è¦ã§ã‚ã‚‹ã€‚ -pipe å„ã‚¹ãƒ†ãƒ¼ã‚¸é–“ã§æƒ…å ±ã®ã‚„ã‚Šã¨ã‚Šã‚’ã™ã‚‹ã®ã« temporary file ã‚’ä½¿ã‚ãšã€ pipe ã‚’ä½¿ã†ã‚ˆã†ã«ã™ã‚‹ã€‚ã“ã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ãŒ Makefile ãªã©ã« å«ã¾ã‚Œã¦ã„ã‚‹ã¨ãã¯ã€ãŸã„ã¦ã„é™¤ã„ãŸã»ã†ãŒã‚ˆã„ã€‚ãªãœãªã‚‰ã€ å¤šãã®ã‚·ã‚¹ãƒ†ãƒ ã§ã¯ã€ã‚¢ã‚»ãƒ³ãƒ–ãƒ©å´ãŒãƒ‘ã‚¤ãƒ—ã«å¯¾å¿œã—ã¦ãªã„ã‹ã‚‰ã€‚ è¨€èªžä»•æ§˜ã«é–¢ã™ã‚‹ã‚ªãƒ—ã‚·ãƒ§ãƒ³ -ansi åŽ³æ ¼ãª ANSI ä»•æ§˜ã§ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã™ã‚‹ã€‚ã“
uokada 2011/09/25
gcc

GNU

Linux

compiler
ãƒªãƒ³ã‚¯
ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©(gccã‚³ãƒžãƒ³ãƒ‰)ã®ä½¿ã„æ–¹
gccã¯ã‚¸ãƒ¼ã‚·ãƒ¼ã‚·ãƒ¼ã¨èªã‚€ï¼ŽGNUãŒä½œæˆã—ï¼ŒUNIXï¼ŒWindowsãªã©ã§å‹•ä½œã™ã‚‹ãƒ•ãƒªãƒ¼ ã®ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã§ã‚ã‚‹ï¼Ž ã“ã“ã§ã¯ï¼ŒCè¨€èªžã‚’ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã™ã‚‹éš›ã®gccã®åˆ©ç”¨æ–¹æ³•ã‚’èª¬æ˜Žã™ã‚‹ãŒï¼ŒC++ã®å ´åˆ ã«ã¯gccã¨ã„ã†ã¨ã“ã‚ã‚’g++ã«å¤‰æ›´ã™ã‚Œã°ã»ã¼ãã®ã¾ã¾åˆ©ç”¨å¯èƒ½ã§ã‚ã‚‹ï¼Ž ã‚¤ã‚¿ãƒªãƒƒã‚¯ä½“ã¯ï¼Œå®Ÿè¡Œæ™‚ã«ã¯é©å½“ã«å¤‰ãˆã‚‹ã“ã¨ï¼Žã“ã“ã§ã¯ï¼Œã‚µãƒ³ãƒ—ãƒ«ã¨ã— ã¦ï¼Œtest.cã‚’ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã—ã¦test.o(ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãƒ•ã‚¡ã‚¤ãƒ«)ã¾ãŸã¯ test(å®Ÿè¡Œãƒ•ã‚¡ã‚¤ãƒ«)ã‚’ä½œæˆã™ã‚‹å ´åˆã«ã¤ã„ã¦ã®èª¬æ˜Žã‚’ã™ã‚‹ï¼Ž ä¸»ãªã‚ªãƒ—ã‚·ãƒ§ãƒ³ä¸€è¦§ -gã€€ã€€ã€€(ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ï¼Œãƒªãƒ³ã‚¯æ™‚) ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ï¼Œãƒªãƒ³ã‚¯æ™‚ã«DEBUGæƒ…å ±ã‚’ä»˜åŠ ã™ã‚‹ï¼Ždbx,gdbãªã©ã®ãƒ‡ãƒãƒƒã‚¬ ã‚’ä½¿ç”¨ã™ã‚‹ã¨ãã«å¿…è¦ï¼Ž -cã€€ã€€ã€€(ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚) ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã®ã¿è¡Œã†(ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã‚’ç”Ÿæˆã™ã‚‹)ï¼Ž ex: gcc -c test.cã€€ã€€ã€€â†’ test.oã‚’ç”Ÿæˆ -o test.oã€€ã€€(
uokada 2011/09/25
gcc

GNU

Linux

compiler
ãƒªãƒ³ã‚¯
Linux Wiki
ã“ã®Wikiã¯ä»Šå¹´åº¦ä¸ã§é–‰ã˜ã‚‹äºˆå®šã§ã™ã€‚ä½•ã‚‰ã‹ã®å½¢ã®ã‚¢ãƒ¼ã‚«ã‚¤ãƒ–ã¯æ®‹ã—ã¾ã™ -- å¥¥æ‘? 2021-08-10 (ç«) 20:04:42 PHPãŒä½¿ãˆãªã„ãƒ–ãƒ©ã‚¦ã‚¶ãŒã‚ã‚Šã¾ã™ã€‚ -- morinet? 2021-08-10 (ç«) 18:07:38 ã‚ -- ã‚? 2021-08-10 (ç«) 18:05:39 Vine Linux 6 ãŒãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¦ã„ã¾ã™ã€‚http://vinelinux.org/ -- detch 2012-07-27 (é‡‘) 13:01:18 æ°—ãŒã¤ã‘ã° Vine Linux 5 ãŒãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¦ã„ã¾ã™ã€‚http://vinelinux.org/whatsnew.html -- ã‚ˆã£ã‘ 2009-09-01 (ç«) 22:33:58 2007-12-25 ã« Vine Linux 4.2 ãŒãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¦ã„ã¾ã™ã€‚ -- ã‚ˆã£ã‘ 2008-01-01 (ç«) 19:10
uokada 2011/04/04
gcc

Programming

linux
ãƒªãƒ³ã‚¯
CentOSã§GCCã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚¢ãƒƒãƒ—ã‚’è¡Œã£ã¦ã¿ã‚‹Â |Â ãƒ¬ãƒ³ã‚¿ãƒ«ã‚µãƒ¼ãƒãƒ¼ãƒ»è‡ªå®…ã‚µãƒ¼ãƒãƒ¼è¨å®šãƒ»æ§‹ç¯‰ã®ãƒ’ãƒ³ãƒˆ
CentOSã§GCCã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚¢ãƒƒãƒ—ã‚’è¡Œã£ã¦ã¿ã‚‹
uokada 2011/04/04
gcc
ãƒªãƒ³ã‚¯
1