From:	"Keith McCormick" <kdm98 AT spiritone DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Need help building Allegro!?!
Date:	8 Sep 1999 21:20:42 GMT
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Well I changed it back to two and allegro builds now.

KeithM


Eli Zaretskii <eliz AT is DOT elta DOT co DOT il> wrote in message
news:Pine DOT SUN DOT 3 DOT 91 DOT 990907134032 DOT 27853B-100000 AT is...
>
> On 6 Sep 1999, Keith McCormick wrote:
>
> > Another thing I changed myself (as intimated in mail archive) is the
> > COFF_DEFAULT_SECTION_ALIGNMENT_POWER.  I changed it to 4 instead of 2.
>
> That might just be your problem.  AFAIK, naive changes like that break
> the static constructors and destructors, which are called from
> `__main', and that is exactly where your program crashes.
>
> Mark, am I right in assuming that section alignment can cause these
> crashes?
>
> So either try the same setup with Binutils 2.8.1 from SimTel, or
> rebuild Binutils 2.9.1 after reverting to the original alignment, and
> see if the problem goes away.
>
> > Also, does this actually do anything because the linker scripts have an
> > ALIGN statement.
>
> Of course, this changes something.  The ALIGN directives in the linker
> script are for the beginning of the section, whereas
> COFF_DEFAULT_SECTION_ALIGNMENT_POWER is for *subsections*.
> Subsections are the parts of code generated for each object file.  If
> the object code for each .o file is 4-byte aligned, then you cannot
> get a better alignment for your code even if the section beginning is
> aligned better.
>

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