pyrox.dev / nixpkgs
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glibc_multi: add output "static"

This change enables static compilation with glibc in a multilib setup. For
building a nix shell the output can now be referenced as follows:

devShells.default = pkgs.mkShell {
packages = [
pkgs.glibc_multi.static
];
};

In the implementation I was forced to make two design decisions:
1. The directory `$static/lib64` has to be a "real" directory and not a symlink.
Otherwise, the path to this directory is not added to $NIX_LDFLAGS, which in
turn causes the files to not be visible to gcc and ld during the build
process (for details see `pkgs/build-support/bintools-wrapper/setup-hook.sh`
line 16).
2. The directories `$static/lib` and `$static/lib64` have to contain symlinks
to both the files used for static and for dynamic linking (i.e. the outputs
of `static` and `out` of the 32 and 64 bit variant of glibc). Without this,
dynamic linking still works, however the resulting binaries will segfault.

Tim eaee7b7a 64949102

options
unified split
Changed files
+11 -1
pkgs
development
libraries
glibc
multi.nix
+11 -1
pkgs/development/libraries/glibc/multi.nix 
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      "out"


     

       
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      "bin"


     

       
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      "dev"


     

       
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-

       
    ]; # TODO: no static version here (yet)


     

       

       
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+

       
      "static"


     

       

       
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    ];


     

       
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    passthru = {


     

       
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      libgcc = lib.lists.filter (x: x != null) [


     

       
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        (glibc64.libgcc or null)


     
···

       
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    cp -rs '${glibc32.dev}'/include "$dev/"


     

       
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    chmod +w -R "$dev"


     

       
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    cp -rsf '${glibc64.dev}'/include "$dev/"


     

       

       
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+

       



     

       

       
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+

       
    mkdir -p "$static/lib" "$static/lib64"


     

       

       
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    # create symlinks for files used for dynamic linking


     

       

       
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    # -> removing this will cause dynamically linked programs to segfault


     

       

       
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+

       
    cp -rs '${glibc32.out}'/lib/* "$static/lib"


     

       

       
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+

       
    cp -rs '${glibc64.out}'/lib/* "$static/lib64"


     

       

       
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+

       
    # create symlinks for files used for static linking


     

       

       
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    cp -rs '${glibc32.static}'/lib/* "$static/lib"


     

       

       
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+

       
    cp -rs '${glibc64.static}'/lib/* "$static/lib64"


     

       
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  ''