Hi folks, Autoconf defines a macro called AC_PROVIDE_IFELSE, which can allow one to hook into the AC_REQUIRE machinery in order to do potentially interesting things. For a specific example, I recently wanted to emit a (hopefully) helpful warning message if LT_INIT had not been previously expanded, and it seems that I can do that very easily with something like: AC_PROVIDE_IFELSE([LT_INIT], , [m4_warn([syntax], [blah blah])]) However, AC_PROVIDE_IFELSE is not described in the Autoconf manual, which makes me wonder if the macro should be used by packages. The fact that it's defined at all (as an alias for m4_provide_if) seems to suggest that it was intended to be used... Also, on a related note, AC_PROVIDE is referred to several times in the Autoconf manual (in a manner that suggests that packages can use it) but the manual never actually explains what AC_PROVIDE does or how to invoke it properly. So, are these macros intended to be used by packages? If so, can they be documented in the manual? Thanks, -- Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/) _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf
