Re: AT_TESTED: make it work with full paths from AC_PATH_PROG

[Eric Blake]

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According to Allan Clark on 11/17/2009 3:30 AM:
> Hi;
> 
> in Autoconf-2.64, AT_TESTED() only works with utilities that would be found
> with AC_CHECK_PROGS().  Full pathnames don't work, so tools such as
> AC_PATH_PROGS() that report a full pathname cannot be AT_TESTED().
> 
> The following patch should resolve this -- really all it does is preface a
> "/" into the path tested, so that (ie AT_TESTED(@BZCAT@) where BZCAT is
> /usr/bin/bzcat) the path "/" is tested, checking ///usr/bin/bzcat, before
> testing /bin, checking /bin/usr/bin/bzcat.

Nice idea.  However, it adds the potential for false positives.  A better
patch would be to check for an absolute name prior to starting the loop
over PATH.  I'll work up a patch along those lines.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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