Re: [Nix-dev] Why not use SONAME instead of RPATH

2016-05-17 Thread Ryan Newton
This woild be fantastic. TBH I've been wondering the same thing when reading documentation talked > about rpath. This seems like the simpler more direct method. It also > avoid the theoretical problem where there are two libraries of the same > name in different folders, this allows you to

Re: [Nix-dev] Why not use SONAME instead of RPATH

2016-04-29 Thread Silvio Frischknecht
That's too bad about dlopen, but it's good to see that things are well thought through. :) "soname" is only in version patchelf-0.9. The manpage reads as follows. --print-soname Prints DT_SONAME entry of .dynamic section. Raises an error if DT_SONAME doesn't

Re: [Nix-dev] Why not use SONAME instead of RPATH

2016-04-29 Thread Vladimír Čunát
On 04/29/2016 12:02 AM, Thomas Tuegel wrote: > patchelf can do this, but only for shared libraries that are actually > linked. Really? I can't see anything like that in the man pages. --Vladimir smime.p7s Description: S/MIME Cryptographic Signature

Re: [Nix-dev] Why not use SONAME instead of RPATH

2016-04-28 Thread Thomas Tuegel
On Thu, Apr 28, 2016 at 1:45 PM, Vladimír Čunát wrote: > On 04/28/2016 08:20 PM, Александр Цамутали wrote: >> Is it possible to apply this approach to binary packages? > > I don't think so, but that doesn't seem really relevant. The suggestion > is to change what our compiler

Re: [Nix-dev] Why not use SONAME instead of RPATH

2016-04-28 Thread Vladimír Čunát
On 04/28/2016 08:20 PM, Александр Цамутали wrote: > Is it possible to apply this approach to binary packages? I don't think so, but that doesn't seem really relevant. The suggestion is to change what our compiler produces... --Vladimir smime.p7s Description: S/MIME Cryptographic Signature

Re: [Nix-dev] Why not use SONAME instead of RPATH

2016-04-28 Thread Александр Цамутали
Is it possible to apply this approach to binary packages? -- Александр Цамутали ___ nix-dev mailing list nix-dev@lists.science.uu.nl http://lists.science.uu.nl/mailman/listinfo/nix-dev

Re: [Nix-dev] Why not use SONAME instead of RPATH

2016-04-20 Thread Wout Mertens
Woah I love that! +1, I don't see why we can't do that… Wout. On Wed, Apr 20, 2016 at 1:52 PM Silvio Frischknecht wrote: > Hello, > > I recently found out that if you set the SONAME of a library to an > absolute path. > > gcc --shared -Wl,-soname="$(pwd)/libxyz.so" -o libxyz.so

Re: [Nix-dev] Why not use SONAME instead of RPATH

2016-04-20 Thread Kevin Cox
On 17/04/16 12:02, Silvio Frischknecht wrote: > > Advantages over RPATH: > + probably faster since rpaths in nixos tend to be quite long and every > library has to be looked for in every folder (linear vs quadratic > complexity) > + only has to be setup once per library - all referrers will >

[Nix-dev] Why not use SONAME instead of RPATH

2016-04-20 Thread Silvio Frischknecht
Hello, I recently found out that if you set the SONAME of a library to an absolute path. gcc --shared -Wl,-soname="$(pwd)/libxyz.so" -o libxyz.so libxyz.c and then later link to it gcc main.c -L. -lxyz the dynamic linker will only look for the library in the exact path specified when