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7.2 ½ÐÎÏÊÑ¿ô¤ÎÀßÄê

¥Æ¥¹¥È¤Î·ë²Ì¤òµ­Ï¿¤¹¤ë¤â¤¦°ì¤Ä¤ÎÊýË¡¤Ï¡¤½ÐÎÏÊÑ¿ô(output variables) ¤òÀßÄꤹ¤ë¤³¤È¤Ç¡¤¤½¤ì¤Ï¡¤configure¤¬½ÐÎϤ·¤¿¥Õ¥¡¥¤¥ë¤ÎÃæ¤Ë¡¤ ¥·¥§¥ëÊÑ¿ô¤ÎÃͤòÂåÆþ¤¹¤ë¤³¤È¤Ç¤¹¡¥°Ê²¼¤ÎÆó¤Ä¤Î¥Þ¥¯¥í¤Ç¿·¤·¤¤½ÐÎÏÊÑ¿ô¤òºî ¤ê¤Þ¤¹¡¥ÍøÍѲÄǽ¤Ê½ÐÎÏÊÑ¿ô¤Î¥ê¥¹¥È¤Ï¡¤See Preset Output Variables.

Macro: AC_SUBST (variable, [value])

¥·¥§¥ëÊÑ¿ô¤«¤é½ÐÎÏÊÑ¿ô¤òºîÀ®¤·¤Þ¤¹¡¥AC_OUTPUT¤Ï¡¤½ÐÎÏ¥Õ¥¡¥¤¥ë¤ÎÊÑ ¿ôvariable¤ËÂåÆþ¤·¤Þ¤¹(Ä̾°ì¤Ä°Ê¾å¤ÎMakefile¤Ç¤¹)¡¥¤³¤ì ¤Ï¡¤AC_OUTPUT¤¬¸Æ¤Ó½Ð¤µ¤ì¤¿¤È¤­¡¤ÆþÎÏ¥Õ¥¡¥¤¥ë¤Î ‘@variable@’¤Î¥¤¥ó¥¹¥¿¥ó¥¹¤ò¥·¥§¥ëÊÑ¿ôvariable¤¬»ý¤Ä ÃͤÇAC_OUTPUT¤¬ÃÖ´¹¤¹¤ë¤³¤È¤ò°ÕÌ£¤·¤Þ¤¹¡¥variable¤Î¤³¤ÎÃÍ¤Ï ²þ¹Ô¤Î¥ê¥Æ¥é¥ë¤ò´Þ¤à¤Ù¤­¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡¥

value¤¬Í¿¤¨¤é¤ì¤Æ¤¤¤ë¾ì¹ç¡¤¤µ¤é¤Ë¤½¤ì¤âvariable¤ËÅϤµ¤ì¤Þ¤¹¡¥

Macro: AC_SUBST_FILE (variable)

¥·¥§¥ëÊÑ¿ô¤«¤é½ÐÎÏ¥Õ¥¡¥¤¥ë¤òºîÀ®¤¹¤ë¤â¤¦°ì¤Ä¤ÎÊýË¡¤Ç¤¹¡¥AC_OUTPUT ¤Ç¡¤¥·¥§¥ëÊÑ¿ôvariable¤Ç̾ÉÕ¤±¤é¤ì¤¿¥Õ¥¡¥¤¥ë¤ÎÆâÍÆ¤ò½ÐÎÏ¥Õ¥¡¥¤¥ë¤Ë ÁÞÆþ¤·¤Þ¤¹(ÂåÆþ¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó)¡¥¤³¤ì¤Ï¡¤AC_OUTPUT¤¬¸Æ¤Ó½Ð¤µ¤ì¤¿¤È ¤­¡¤¥·¥§¥ëÊÑ¿ôvariable¤Î̾Á°¤Î¥Õ¥¡¥¤¥ë¤ÎÆâÍÆ¤Ç¡¤ (Makefile.in)¤Î¤è¤¦¤Ê½ÐÎÏ¥Õ¥¡¥¤¥ë¤Î‘@variable@’¤Î¥¤ ¥ó¥¹¥¿¥ó¥¹¤ò¡¤AC_OUTPUT¤¬ÃÖ´¹¤¹¤ë¤³¤È¤ò°ÕÌ£¤·¤Þ¤¹¡¥ÁÞÆþ¤¹¤ë¥Õ¥¡¥¤ ¥ë¤¬¤Ê¤¤¾ì¹ç¤Ë¤Ï¡¤ÊÑ¿ô/dev/null ¤ËÀßÄꤷ¤Þ¤¹¡¥

¤³¤Î¥Þ¥¯¥í¤Ï¡¤Makefile¤ËÆÃÊ̤ʰ͸¤ò´Þ¤à¥Õ¥é¥°¤òÁÞÆþ¤·¤¿¤ê¡¤ÆÃÄê ¤Î¥Û¥¹¥È¤ä¥¿¡¼¥²¥Ã¥È¤Î¤¿¤á¤Îmake¥Ç¥£¥ì¥¯¥Æ¥£¥Ö¤òMakefile¤Ë ÁÞÆþ¤¹¤ë¤È¤­Ìò¤ËΩ¤Á¤Þ¤¹¡¥Î㤨¤Ð¡¤configure.ac ¤Ë°Ê²¼¤ò´Þ¤Þ¤»¤Þ¤¹¡¥

AC_SUBST_FILE(host_frag)
host_frag=$srcdir/conf/sun4.mh

¤½¤·¤ÆMakefile.in¤Ë°Ê²¼¤ò´Þ¤Þ¤»¤Þ¤¹¡¥

@host_frag@

°Û¤Ê¤ë´Ä¶­ÊÑ¿ô¤Çconfigure¤ò¼Â¹Ô¤¹¤ë¤³¤È¤ÏÈó¾ï¤Ë´í¸±¤Ç¤¹¡¥Î㤨 ¤Ð¡¤¥æ¡¼¥¶¤¬‘CC=bizarre-cc ./configure’¤ò¼Â¹Ô¤·¤¿¾ì¹ç¡¤¥­¥ã¥Ã¥·¥å¡¤ config.h¡¤¤½¤·¤ÆÂ¿¤¯¤Î½ÐÎÏ¥Õ¥¡¥¤¥ë¤Ï¡¤C¥³¥ó¥Ñ¥¤¥é¤¬ bizarre-cc¤À¤È¤¤¤¦¤³¤È¤Ë°Í¸¤·¤Þ¤¹¡¥Íýͳ¤¬¤¢¤Ã¤Æ¡¤¥æ¡¼¥¶¤¬ºÆ¤Ó ./configure¤ò¼Â¹Ô¤·¤¿¾ì¹ç¤ä¡¤‘./config.status --recheck’ ¤Ç¤½¤ì¤¬¼Â¹Ô¤µ¤ì¤ë¾ì¹ç(See Automatic Remaking. see config.status Invocation)¡¤¥³¥ó¥Õ¥£¥°¥ì¡¼¥·¥ç¥ó¤ÏÌ·½â¤·¡¤Æó¤Ä¤Î°Û¤Ê¤ë¥³¥ó¥Ñ¥¤¥é¤Ë°Í¸ ¤·¤¿·ë²Ì¤Ç¹½À®¤µ¤ì¤Þ¤¹¡¥

¾åµ­¤Î‘CC’¤Î¤è¤¦¤Ë¡¤¤³¤Î¾õ¶·¤Ë±Æ¶Á¤¹¤ë´Ä¶­ÊÑ¿ô¤Ïµ®½Å¤ÊÊÑ¿ô (precious variables)¤È̿̾¤µ¤ì¤Æ¤¤¤Æ¡¤AC_ARG_VAR¤Î¤è¤¦¤Ê¤â¤Î¤ÇÀë ¸À¤¹¤ë¤³¤È¤¬²Äǽ¤Ç¤¹¡¥

Macro: AC_ARG_VAR (variable, description)

variable¤òµ®½Å¤ÊÊÑ¿ô¤È¤·¤ÆÀë¸À¤·¡¤‘./configure --help’¤Î²ÄÊÑ Éôʬ¤Ë¤½¤Îdescription¤ò´Þ¤á¤Þ¤¹¡¥

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