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./configure --help


From: Дилян Палаузов
Subject: ./configure --help
Date: Sun, 25 May 2014 17:46:25 +0200
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

Hello,

what is ./configure --help supposed to print?

According to my understanding, for each feature X it shall print either --enable-X or --disable-X, so that the one running ./configure has to type only parameters which change the default behaviour, without having to check README.

That said, assuming that the person on the system knows exactly what the local config.site does, ./configure --help shall print either --enable-silent-rules or --disable-silent-rules.

If you check ./configure --help from curl (http://curl.haxx.se/), you will see a lot of --enable-X / --disable-X , even though there is no practical use when one uses the --enable-X option. As an example, --enable-http / --disable-http : one either specifies --disable-http, or the HTTP support is enabled; no need of explicit --enable-http. I believe this over-listing of options there is due the lack of guidelines what to print at ./configure --help .

Please correct me, if there are such guidelines (in the Autoconf manual), which clarify when to print both --enable-X and --disable-X and when to print one of them.

Със здраве
  Дилян




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