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Date: Mon, 30 Nov 2020 18:07:08 +0200
Message-Id: <83wny2kevn.fsf@gnu.org>
From: "Eli Zaretskii (eliz AT gnu DOT org) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
To: djgpp AT delorie DOT com
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	<CAN1+P_1E4J8VveQkaeTt2mCsmpD1cBc+woeeKG7+CTM90B8uQA AT mail DOT gmail DOT com>
	(djgpp AT delorie DOT com)
Subject: Re: GCC 10.2.0, collect2.exe error - cannot create temporary file
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Reply-To: djgpp AT delorie DOT com

> From: "Greg Kennedy (kennedy DOT greg AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
> Date: Mon, 30 Nov 2020 00:25:33 -0600
> 
> However, this did give me a way to try building with more or less .o
> files on the command-line.  As I did this I found that the pex-common
> call was returning an FD that *increased* for every .o I added.  For
> example, here's where I put three .o files and the rest in a .a:
> 
> collect2.c: make_temp_file(.ctc)
> Called make_temp_file(.ctc), redirecting
> Called make_temp_file_with_prefix(cc, .ctc):
> 'c:/djgpp/tmp/ccXXXXXX.ctc'mkstemps(c:/djgpp/tmp/ccXXXXXX.ctc, 4):
> trying open(c:/djgpp/tmp/cchFW50P.ctc, ...)
> Got new file descriptor 5
> -> 'c:/djgpp/tmp/cchFW50P.ctc'
> collect2.c: make_temp_file(.cto)
> Called make_temp_file(.cto), redirecting
> Called make_temp_file_with_prefix(cc, .cto):
> 'c:/djgpp/tmp/ccXXXXXX.cto'mkstemps(c:/djgpp/tmp/ccXXXXXX.cto, 4):
> trying open(c:/djgpp/tmp/ccoaJ1Rv.cto, ...)
> Got new file descriptor 5
> -> 'c:/djgpp/tmp/ccoaJ1Rv.cto'
> pex-common.c: make_temp_file(NULL)
> Called make_temp_file((null)), redirecting
> Called make_temp_file_with_prefix(cc, ):
> 'c:/djgpp/tmp/ccXXXXXX'mkstemps(c:/djgpp/tmp/ccXXXXXX, 0): trying
> open(c:/djgpp/tmp/ccYv0qDi, ...)
> Got new file descriptor 9
> -> 'c:/djgpp/tmp/ccYv0qDi'
> 
> (Meanwhile, just one .o file gave an FD of 7.  All objects in a .a
> never actually calls this function, I guess because it isn't
> involved.)
> 
> My assumption then is that I'm running out of free File Descriptors by
> passing too many .o files at once.  This seems like a bug, maybe?

How many *.o files do you have in this case?  You can have up to 255
files open at any given time, see the DJGPP FAQ for details.