Date: Thu, 23 Aug 2012 15:56:32 +0200 From: John Spencer <maillist-musl@...fooze.de> To: musl@...ts.openwall.com CC: Richard Pennington <rich@...nware.com> Subject: Re: build musl with clang On 08/23/2012 03:11 PM, agent wrote: > 23.08.2012 18:24, John Spencer пишет: >> this sounds as if the binary uses gnu hash as opposed to sysv hash. >> did you use ./configure ? >> see FAQ in http://wiki.musl-libc.org > i didn't use any build systems, just a shell script with commands. > that was just a hello world. i was referring to how you have built musl; musl's configure script detects broken distro toolchains and adds flags so that musl and musl-gcc is built with sysv hash only. > i was able to compile it and if i encounter any problems in future, > i'll try the solution from FAQ. > btw, there was no link to this wiki from main site yes, for some reason rich didn't place a link there yet. >> there is another known bug in clang which will lead to calloc getting >> wrongly optimized away, because clang disrespects -ffree-standing. >> Richard Pennington wanted to reported this to the LLVM maillist >> months ago, but afaik he still hasn't done this. > i was investigating the possibility of using clang + musl for writing > a new program, not for porting existing software, so it may be > possible to avoid using some functions in reasonable scale, or change > any component in this bundle. > and does that bug affect a whole *alloc family or just calloc? > the bug affects optimizations that assume things about libc functions, -ffree-standing is meant to turn them off but apparently this feature is buggy in clang, this was detected with a test involving calloc. it is possible that other functions are affected as well. it would be nice if richard pennington could finally invest 3 minutes to file a bugreport as he promised and get this annoying issue out of our way.
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