Re: AC_CHECK_LIB broken with variable reference

[Tim Van Holder]

> AC_CHECK_LIB($foo, main) generates this line:
>
> ac_ac_Lib=`echo "ac_cv_lib_$foo_main" | $ac_tr_sh`
>
> This causes ac_ac_Lib to always be "ac_cv_lib_", since $foo_main is empty.
>
> Note that this is a supported feature explicitly mentioned in the autoconf
> docs (*Note (autoconf)Changed Results::).
>
Then I guess we should mention this in the docs and say that for such
situations, you need to use

  AC_CHECK_LIB(${foo}, main)

instead.