Re: --with-foo= vs. FOO=${FOO:-foo_default}

[Philip Willoughby]

Today, address@hidden wrote:

>> It may be wrong (or merely suboptimal) to abuse --with and --enable, but if
>> the only tool you have is a hammer...
>
>This is unfortunately how I feel.  I hate to abuse the --with flags, but
>setting 27 different environment variables or editing a config file feels
>like a step back.

Blindingly obvious answer:

Why not copy the AC_ARG_WITH macro and rename it to AC_ARG_DEFAULT and
change the code appropriately.

It seems sensible to me to change the defaults at configure time, but I
agree then --with and --enable are inappropriate.

Regards,

Philip Willoughby

Systems Programmer, Department of Computing, Imperial College, London, UK
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