setup.py: skip inotify if there's no inotify_add_watch
Debian Etch doesn't include a sys/inotify.h header, which makes it
impossible to compile _inotify.c, making hg uninstallable.
The cc.has_function() method is implemented by trying to compile a
simple C program. Since there's no redirection involved all error
messages are sent to the terminal. This is not particularly pretty
but at least it allows the installation to complete.
changeset: 0:4cbec7e6f8c4
tag: tip
user: Testing
date: Thu Jan 01 00:00:00 1970 +0000
summary: test
---- HEADERS
200 Script output follows
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<?xml version="1.0" encoding="ascii"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<!-- Changelog -->
<id>http://127.0.0.1/</id>
<link rel="self" href="http://127.0.0.1/atom-log"/>
<link rel="alternate" href="http://127.0.0.1/"/>
<title>repo Changelog</title>
<updated>1970-01-01T00:00:00+00:00</updated>
<entry>
<title>test</title>
<id>http://www.selenic.com/mercurial/#changeset-4cbec7e6f8c42eb52b6b52670e1f7560ae9a101e</id>
<link href="http://127.0.0.1/rev/4cbec7e6f8c42eb52b6b52670e1f7560ae9a101e"/>
<author>
<name>Testing</name>
<email>Testing</email>
</author>
<updated>1970-01-01T00:00:00+00:00</updated>
<published>1970-01-01T00:00:00+00:00</published>
<content type="xhtml">
<div xmlns="http://www.w3.org/1999/xhtml">
<pre xml:space="preserve">test</pre>
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---- ERRORS
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200 Script output follows
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[('Content-Type', 'text/plain; charset=ascii')]
-rw-r--r-- 4 bar
---- ERRORS
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200 Script output follows
---- DATA
[('Content-Type', 'text/plain; charset=ascii')]
/repo/
---- ERRORS
---- HEADERS
200 Script output follows
---- DATA
[('Content-Type', 'text/plain; charset=ascii')]
-rw-r--r-- 4 bar
---- ERRORS