Am Montag, den 10.08.2020, 09:11 +0200 schrieb Bardur Arantsson: > On 09/08/2020 14.50, Volker Wysk wrote: > > Hi! > > > > I know of the command line argument "-static". But this only > > affects > > the Haskell libraries. I want to link some programs completely > > statically, no external libraries needed. > > > > When just linking with "-static" I still have those dynamically > > linked > > things: > > > > desktop ~/bin $ ldd sicherung > > linux-vdso.so.1 (0x00007ffdab53f000) > > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 > > (0x00007f3633da0000) > [--snip--] > > libgmp.so.10 => /lib/x86_64-linux-gnu/libgmp.so.10 > > (0x00007f3633ce3000) > > libatomic.so.1 => /lib/x86_64-linux-gnu/libatomic.so.1 > > (0x00007f3633cd7000) > > libffi.so.7 => /lib/x86_64-linux-gnu/libffi.so.7 > > (0x00007f3633ccb000) > > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 > > (0x00007f3633ad9000) > > /lib64/ld-linux-x86-64.so.2 (0x00007f3633f0c000) > > > > > > Is it possible to link the remaining libraries statically too? > > > > As Brandon already mentioned, linking glibc statically is not really > supported (by glibc!), but what you can do is bundle a few of the > .so's > together with your binary and use RPATH to help your executable find > them at load time (well, dynamic link time). > > A project of ours where we do this is using Stack, so I can only > really > provide info on doing it with Stack, but hopefully you can adapt to > whatever you're using: > > We added > > ld-options: > - -Wl,-rpath,$ORIGIN/../lib > > to the 'executable' portion of the package.yaml. This instructs the > dynamic loader to look for libraries in '../lib' relative to the > executable's location. You can pick whatever path you want there. > > Once you have that bit set up, you can copy *most* of the libraries > .so's you're using to that folder on the install target and they'll > be > loaded from there. (Copying libc.so is ill advised, but most of the > others will work just fine. I believe ld-linux-... is also never ever > loaded from there since that *is* the dynamic loader.) > > (Of course a possibly more robust version of this is to just bundle > everything into a container of some sort, but that may be a bit > excessive for your needs.)
Thank you for your elaborate explanation. This would be overkill for what I have in mind. I'm just trying to save a statically linked copy of a program of mine, which is involved in my backup, along with the backup, and also on a maintenance USB stick. I've stowed you answer away in my personal wiki, and may get back to it later. Regards, Volker
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