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Message-ID: <5365EAD6.504@gmail.com>
Date: Sun, 04 May 2014 01:23:02 -0600
From: Lance Fredrickson <lancethepants@...il.com>
To: musl@...ts.openwall.com
Subject: Minimal asterisk compilation

Musl has caught my eye, and I've compiled various one-off binaries, but 
wanted to compile a minimal asterisk setup for an embedded mipsel device 
(router).

I've put my code here.
https://github.com/lancethepants/asterisk-embedded-musl
Sorry, I do things hacky.

I later moved over libc.so, and created ld-musl-mipsel.so.1

All the binaries I've compiled so far work fine, but the modules in 
asterisk have issues.
One example is

# /opt/asterisk/bin/ldd ./codec_ulaw.so /opt/asterisk/bin/ldd (0x55550000)
         libc.so => /opt/asterisk/bin/ldd (0x55550000)
Error relocating ./codec_ulaw.so: ast_format_set: symbol not found
Error relocating ./codec_ulaw.so: __ast_mulaw: symbol not found
Error relocating ./codec_ulaw.so: ast_unregister_file_version: symbol 
not found
Error relocating ./codec_ulaw.so: ast_module_unregister: symbol not found
Error relocating ./codec_ulaw.so: __ast_lin2mu: symbol not found
Error relocating ./codec_ulaw.so: ast_unregister_translator: symbol not 
found
Error relocating ./codec_ulaw.so: __ast_register_translator: symbol not 
found
Error relocating ./codec_ulaw.so: ast_register_file_version: symbol not 
found
Error relocating ./codec_ulaw.so: ast_module_register: symbol not found

This happens for each module. The symbols look to be inside when looking 
at them with the readelf command. This breaks the all of asterisk.
I tried throwing in -fPIC in the LDFLAGS but did nothing.
In order to get it compile at all, I grabbed some patches from here.
https://github.com/uggedal/aports/blob/master/main/asterisk/musl-glob-compat.patch
and also did some cheating throwing in a cdefs file from the same repo 
mentioned, and some sed commands to fix some PTHREAD stuff.
I thought I was home free once it compiled, but I can't figure out why 
the modules won't work.  Maybe there's something simple I'm 
overlooking.  Any suggestions are appreciated.

cheers,
Lance

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