Date: Wed, 31 Dec 2014 20:49:06 +0100 From: "piranna@...il.com" <piranna@...il.com> To: musl@...ts.openwall.com Subject: Re: Failed to execute /init (error -2) for system-wide musl libc > i think if static init works then try to use > that to boot up the system and then debug the > dynamic case.. It's a good idea, didn't though about it :-) > you can run libc.so with a dynamic executable > as argument then you can debug the loader Definitely I can be able to use Node.js child_process module to launch libc.so, I'll try it :-) > if you have no debug tools on the target then > i think you can add dprintf's to early loader > code in src/ldso/dynlink.c which may help in > figuring out what fails It's just a Node.js REPL, so no debug tools here (at least, no C ones, like GDB), but knowing that src/ldso/dynlink.c has the code of the dynamic linker, add some debug printf's seems a good idea, I believe although it's in the boot process it should write some output to the console... >> executables compiled with the cross-toolchain works on our desktops >> but they don't on QEmu, and we've added all the dynamic libraries that >> readelf request (only libc.so, libstdc++.so & libgcc_s.so). As a > > libgcc_s.so shouldnt be needed It's shown as a dependency of libstdc++.so both by ldd and readelf -d. Maybe could this be the issue? Both libstdc++.so & libgcc_s.so are compiled against musl... >> curious side note, when installing the musl-linked gcc libraries, the >> /lib/ld-musl-i386.so.1 link dissapear from the cross-toochain folder, > > sounds like a clfs buildsystem issue Or CLFS, or gcc, but it's something curious because before the compilation of libstdc++.so & libgcc_s.so against musl the symbolic link is there, and after compile them the symbolic link has dissapear... It doesn't makes sense... :-/ > i've seen the symlink disappearing on openwrt buildsystem once > (that one was not deterministic) i'm not sure what caused it In my case is deterministic, allways happens on the libstdc++.so & libgcc_s.so generation step (more exactly, the make install on the cross-toolchain directory), checked by doing them by hand :-/ -- "Si quieres viajar alrededor del mundo y ser invitado a hablar en un monton de sitios diferentes, simplemente escribe un sistema operativo Unix." – Linus Tordvals, creador del sistema operativo Linux
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