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Message-ID: <20110606185800.GE191@brightrain.aerifal.cx>
Date: Mon, 6 Jun 2011 14:58:00 -0400
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Re: Cleanup patches
On Mon, Jun 06, 2011 at 08:31:15PM +0200, Szabolcs Nagy wrote:
> the c compiler may use different asm syntax than you do?
> so $(AS) can be something that knows your .s syntax
Except that inline asm is also used, so they must agree.
> what's the difference between
> static int f() { stuff(); }
> int g() __attribute__((weak, alias("f")));
> and
> int g() { stuff(); }
The former provides a tentative definition of g which will avoid
pulling in other .o files from an archive (.a) to satisfy references
to g, but which allows another .o file which defines g to override the
tentative definition.
The latter provides a full definition of g which will result in link
errors if g is defined elsewhere.
Rich
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