musl - Static linking of musl with code compiled using GNU header files

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Date: Fri, 14 Mar 2014 10:47:31 -0500
From: David Grothe <dave@...m.com>
To: musl@...ts.openwall.com
CC: Support at Gcom <support@...m.com>
Subject: Static linking of musl with code compiled using GNU header files

Hello,

I have a very large code base that I have been compiling on Linux using 
the standard GNU C compiler [gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3].  
I have been using shared object libraries, but for reasons of software 
support I would now like to link all my commands (a couple of dozen) and 
daemons using static libraries so that the code files are self-contained 
and can be copied, along with a core file, to any server back in my shop 
for analysis.  With dynamic libraries I have to have exactly the same 
version of libc installed on the machine that I use to examine the core 
file as were present on the machine that generated the core file, or 
else gdb will not produce a stack back trace with file and line number 
information.  So much for the background.

I really don't want to port my code base to using the musl header 
files.  I want to keep compiling with the GNU headers.  When I do this 
and link my-huge-program.o with musl libc.a I get the following list of 
unresolved externals:

          U __divdi3
          w __fini_array_end
          w __fini_array_start
          U __moddi3
          U __sysv_signal
          U __udivdi3
          U __umoddi3
          U __vfprintf_chk
          U __vsnprintf_chk
          U __vsprintf_chk
          U __sysv_signal

So, I am wondering if the musl library could at some point provide these 
routines to enable users to do what I am trying to do.

Any possibility of that?

Thanks,
Dave

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