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6.5 ¥ê¥ó¥«¤Î¼Â¹Ô

¥é¥¤¥Ö¥é¥ê¡¤´Ø¿ô¡¤¤Þ¤¿¤Ï¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤òÄ´ºº¤¹¤ë¤¿¤á¡¤Autoconf¤Î configure¥¹¥¯¥ê¥×¥È¤Ï¡¤¤½¤ì¤ò»ÈÍѤ·¤Æ¤¤¤ë¾®¤µ¤Ê¥×¥í¥°¥é¥à¤Î¥³ ¥ó¥Ñ¥¤¥ë¤È¥ê¥ó¥¯¤ò»î¤ß¤Þ¤¹¡¥¤³¤ì¤ÏMetaconfig¤È¤Ï°Û¤Ê¤ê¡¤¤½¤ì¤Ï¥Ç¥Õ¥©¥ë¥È ¤Ç¡¤C ¥é¥¤¥Ö¥é¥ê¤Ç´Ø¿ô¤¬ÍøÍѲÄǽ¤«¤É¤¦¤«È½Äꤹ¤ë¤¿¤á¤Ënm¤ä ar¤ò»ÈÍѤ·¤Þ¤¹¡¥¥ª¥×¥·¥ç¥ó¤Ènm¤Èar¤Î½ÐÎϤΰ㤤¤È¡¤ ɸ½à¥é¥¤¥Ö¥é¥ê¤Î°ÌÃ֤ΰ㤤¤ò½èÍý¤¹¤ë¤³¤È¤òÈò¤±¤ë¤Î¤Ç¡¤´Ø¿ô¤È¤Î¥ê¥ó¥¯¤ò»î ¤ß¤ë¤³¤È¤Ï¡¤Ä̾¤è¤ê¿®ÍêÀ­¤¬¹â¤¤ÊýË¡¤Ë¤Ê¤ê¤Þ¤¹¡¥¥¯¥í¥¹¥³¥ó¥Ñ¥¤¥ë¤Î¥³¥ó ¥Õ¥£¥°¥ì¡¼¥·¥ç¥ó¤ä¡¤É¬Íפʾì¹ç¤Ï´Ø¿ô¤Î¼Â¹Ô»þ¤Îưºî¤òÄ´ºº¤â²Äǽ¤Ç¤¹¡¥°ìÊý¡¤ °ìÅ٤Υ饤¥Ö¥é¥ê¥¹¥­¥ã¥ó¤è¤êÃÙ¤¯¤Ê¤ë¤Ï¤º¤Ç¤¹¤¬¡¤Àµ³Î¤µ¤Ï»þ´Ö¤è¤ê½ÅÍפǤ¹¡¥

AC_LINK_IFELSE¤Ï¡¤´Ø¿ô¤È¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤ËÂФ¹¤ë¥Æ¥¹¥È¤Î¤¿¤á¡¤¥Æ¥¹ ¥È¥×¥í¥°¥é¥à¤ò¥³¥ó¥Ñ¥¤¥ë¤¹¤ë¤¿¤á¤Ë»ÈÍѤµ¤ì¤Þ¤¹¡¥¥é¥¤¥Ö¥é¥ê¤òÄ´ºº¤¹¤ë AC_CHECK_LIB¤Ç¤â¡¤Ä´ºº¤·¤Æ¤¤¤ë¥é¥¤¥Ö¥é¥ê¤ò°ì»þŪ¤ËLIBS¤ËÄÉ ²Ã¤·¤¿¤ê¡¤¾®¤µ¤Ê¥×¥í¥°¥é¥à¤Î¥ê¥ó¥¯¤ò»î¤ß¤¿¤ê¤¹¤ë¤³¤È¤Ç¡¤»ÈÍѤµ¤ì¤Æ¤¤¤Þ¤¹ (see Libraries)¡¥

Macro: AC_LINK_IFELSE (input, [action-if-found], [action-if-not-found])

¸½ºß¤Î¸À¸ì(see Language Choice)¤Î¥³¥ó¥Ñ¥¤¥é(¤È¥³¥ó¥Ñ¥¤¥é¥Õ¥é¥°)¤È¥ê ¥ó¥«¤òinput¤Ç¼Â¹Ô¤·¡¤À®¸ù¤·¤¿¤é¥·¥§¥ë¥³¥Þ¥ó¥É¤Î action-if-true¤ò¡¤¤½¤ì°Ê³°¤Ç¤Ïaction-if-false¤ò¼Â¹Ô¤·¤Þ¤¹¡¥ input¤ÏAC_LANG_PROGRAM¤ä¤½¤ÎÃç´Ö¤ÇºîÀ®¤¹¤ë¤³¤È¤¬²Äǽ¤Ç¤¹¡¥

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