3 configure¥¹¥¯¥ê¥×¥È¤ÎºîÀ®

Autoconf¤¬À¸À®¤¹¤ë¥³¥ó¥Õ¥£¥®¥å¥ì¡¼¥·¥ç¥ó¥¹¥¯¥ê¥×¥È¤Ï¡¤´·½¬Åª¤Ë configure¤È¸Æ¤Ð¤ì¤Þ¤¹¡¥¼Â¹Ô»þ¤Ë¡¤configure¤Ï¤¤¤¯¤Ä¤« ¤Î¥Õ¥¡¥¤¥ë¤òºîÀ®¤·¡¤¤½¤³¤Ç¡¤¥³¥ó¥Õ¥£¥®¥å¥ì¡¼¥·¥ç¥ó¥Ñ¥é¥á¡¼¥¿¤òŬÀÚ¤ÊÃÍ¤Ë ÃÖ´¹¤·¤Þ¤¹¡¥configure¤¬ºîÀ®¤¹¤ë¥Õ¥¡¥¤¥ë¤Ï°Ê²¼¤ÎÄ̤ê¤Ç¤¹¡¥

• - °ì¤Ä°Ê¾å¤ÎMakefile¤Ç¡¤Ä̾ï¤Ï¥Ñ¥Ã¥±¡¼¥¸¤Î¤½¤ì¤¾¤ì¤Î¥µ¥Ö¥Ç¥£¥ì¥¯¥È ¥ê¤Ë°ì¤Ä¤º¤Ä¤¢¤ê¤Þ¤¹(see Makefile Substitutions)¡¥
• - ¥ª¥×¥·¥ç¥ó¤ÎC¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤Ç¡¤¤½¤ì¤Ï¥³¥ó¥Õ¥£¥°¥ì¡¼¥·¥ç¥ó²Äǽ¤Ê̾Á°¤Ç¡¤ #define¥Ç¥£¥ì¥¯¥Æ¥£¥Ö¤ò´Þ¤ó¤Ç¤¤¤Þ¤¹(see Configuration Headers)¡¥
• - config.status¤È¤¤¤¦Ì¾¤Î¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤Ç¡¤¤½¤ì¤Ï¼Â¹Ô»þ¤Ë¾åµ­¤Ç¥ê ¥¹¥È¥¢¥Ã¥×¤µ¤ì¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¤òºÆÀ¸À®¤·¤Þ¤¹(see config.status Invocation)¡¥
• - (‘configure --config-cache’¤¬»ÈÍѤµ¤ì¤ë¤È¤­¤ËºîÀ®¤µ¤ì¤ë) config.cache¤È¤¤¤¦Ì¾¤Î¥ª¥×¥·¥ç¥ó¤Î¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤Ç¡¤¤½¤ì¤Ï¿¤¯ ¤Î¥Æ¥¹¥È¤Î¼Â¹Ô·ë²Ì¤òÊݸ¤·¤Æ¤¤¤Þ¤¹(see Cache Files)¡¥
• - config.log¤È¤¤¤¦Ì¾¤Î¥³¥ó¥Ñ¥¤¥é¤¬À¸À®¤¹¤ëÁ´¤Æ¤Î¥á¥Ã¥»¡¼¥¸¤ò´Þ¤ó¤Ç ¤¤¤ë¥Õ¥¡¥¤¥ë¤Ç¡¤configure¤¬¼ºÇÔ¤·¤¿¾ì¹ç¤Ï¥Ç¥Ð¥Ã¥°¤Î½õ¤±¤È¤Ê¤ê ¤Þ¤¹¡¥

Autoconf¤òÍѤ¤¤Æconfigure¥¹¥¯¥ê¥×¥È¤òºîÀ®¤¹¤ë¤¿¤á¤Ë¡¤Autoconf ¤ÎÆþÎÏ¥Õ¥¡¥¤¥ëconfigure.ac(¤Þ¤¿¤Ïconfigure.in)¤ò½ñ¤­¡¤ autoconf¤ò¤½¤³¤Ç¼Â¹Ô¤¹¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥Autoconf¤Ç¤â¤¿¤é¤µ¤ì¤¿ ¤â¤Î¤òÊ䤦¤¿¤á¤ËÆȼ«¤Îµ¡Ç½¥Æ¥¹¥È¤ò½ñ¤¯¾ì¹ç¡¤aclocal.m4¤È acsite.m4¤È¤¤¤¦Ì¾¤Î¥Õ¥¡¥¤¥ë¤â½ñ¤¯¤³¤È¤Ë¤Ê¤ë¤Ç¤·¤ç¤¦¡¥ #define¥Ç¥£¥ì¥¯¥Æ¥£¥Ö¤ò´Þ¤àC¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤ò»ÈÍѤ¹¤ë¾ì¹ç¡¤ autoheader¤â¼Â¹Ô¤·¡¤¥Ñ¥Ã¥±¡¼¥¸¤ÇÀ¸À®¤µ¤ì¤ë¥Õ¥¡¥¤¥ë config.h.in¤òÇÛÉÛ¤¹¤ë¤³¤È¤Ë¤Ê¤ë¤Ç¤·¤ç¤¦¡¥

¥³¥ó¥Õ¥£¥®¥å¥ì¡¼¥·¥ç¥ó¤Ç»ÈÍѲÄǽ¤Ê¥Õ¥¡¥¤¥ë¤òÀ¸À®¤¹¤ëÊýË¡¤Ï¡¤°Ê²¼¤Ç¼¨¤¹¿Þ ¤ÎÍѤˤʤê¤Þ¤¹¡¥¼Â¹Ô¤¹¤ë¥×¥í¥°¥é¥à¤Ë¤Ï¡¤‘*’¤¬ÉÕ¤¤¤Æ¤¤¤Þ¤¹¡¥¥ª¥×¥·¥ç ¥ó¤Î¥Õ¥¡¥¤¥ë¤Ï³Ñ¥«¥Ã¥³(‘[]’)¤Ç°Ï¤Ã¤Æ¤¤¤Þ¤¹¡¥autoconf¤È autoheader¤Ï¡¤Autoconf¤Ç¥¤¥ó¥¹¥È¡¼¥ë¤µ¤ì¤ë(autoconf.m4 ¤¬Æɤà)¥Þ¥¯¥í¥Õ¥¡¥¤¥ë¤âÆɤ߹þ¤ß¤Þ¤¹¡¥

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your source files --> [autoscan*] --> [configure.scan] --> configure.ac

configure.ac --.
               |   .------> autoconf* -----> configure
[aclocal.m4] --+---+
               |   `-----> [autoheader*] --> [config.h.in]
[acsite.m4] ---'

Makefile.in -------------------------------> Makefile.in

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                       .-------------> [config.cache]
configure* ------------+-------------> config.log
                       |
[config.h.in] -.       v            .-> [config.h] -.
               +--> config.status* -+               +--> make*
Makefile.in ---'                    `-> Makefile ---'