GNU bug report logs - #49850
Crosscompiling gzip for musl-based system with clang

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Caleb Heydon <caleb.heydon <at> uconn.edu>
To: bug-gzip <at> gnu.org
Subject: Crosscompiling gzip for musl-based system with clang
Date: Tue, 3 Aug 2021 12:43:44 -0400

[Message part 1 (text/plain, inline)]

Hello,

I have been attempting to crosscompile gzip for a linux system that uses
the musl libc using clang, and I have come across an issue while
attempting to configure gzip.

I set CC="cross-clang", and run ./configure --prefix=/usr --host=x86_64.
cross-clang is just a wrapper script that sets the sysroot for
crosscompiling.  The configuration fails, and I get the following error:

checking how cross-clang reports undeclared, standard C functions...
configure: error: in `/home/user/Desktop/cross-compiling/build/gzip/gzip':
configure: error: cannot detect from compiler exit status or warnings

I have used a similar setup to successfully crosscompile many other pieces
of software, so I am not entirely sure why gzip is not configuring.  Any
suggestions for getting around the issue or suggested software changes
would be greatly appreciated.

Thanks,

Caleb Heydon

[Message part 2 (text/html, inline)]

Message #8 received at 49850 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Caleb Heydon <caleb.heydon <at> uconn.edu>, 49850 <at> debbugs.gnu.org
Subject: Re: bug#49850: Crosscompiling gzip for musl-based system with clang
Date: Wed, 4 Aug 2021 00:07:34 -0700

gzip doesn't do much of anything special when cross-compiling; it's like 
other GNU or Autoconf-using programs. If your cross-compiler doesn't 
output to stderr on error, or outputs to stderr even when there isn't an 
error, that can confuse the process (with gzip and with other programs). 
So you might want to look into that. Otherwise, try putting 'set -x' 
into the relevant parts of the 'configure' shell script and look at the 
debugging output.

Message #15 received at 49850-done <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Caleb Heydon <caleb.heydon <at> uconn.edu>
Cc: 49850-done <at> debbugs.gnu.org
Subject: Re: bug#49850: Crosscompiling gzip for musl-based system with clang
Date: Sun, 25 Dec 2022 21:46:58 -0800

No further comment on this old bug report, so I'm taking the liberty of 
closing it.

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