2018-06-13 03:07:36 +03:00
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{
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runCommandCC
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, nukeReferences
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, glibc
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2018-06-26 07:08:04 +03:00
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, writeShellScriptBin
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2018-06-26 04:01:34 +03:00
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, buildPackages
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2018-06-13 03:07:36 +03:00
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}:
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{
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name ? ""
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, packages ? []
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}:
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let
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concat = builtins.concatStringsSep "\n";
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install_package = set:
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let
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pkg = if set ? type && set.type == "derivation" then set else set.package;
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in
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''
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for BIN in ${pkg}/{s,}bin/*; do
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copy_bin_and_libs $BIN
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done
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${if set ? extraCommand then set.extraCommand else ""}
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'';
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install_packages = concat(map (install_package) packages);
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2018-06-26 07:08:04 +03:00
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# A utility for enumerating the shared-library dependencies of a program
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findLibs = writeShellScriptBin "find-libs" ''
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set -euo pipefail
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declare -A seen
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declare -a left
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patchelf="${buildPackages.patchelf}/bin/patchelf"
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function add_needed {
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rpath="$($patchelf --print-rpath $1)"
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dir="$(dirname $1)"
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for lib in $($patchelf --print-needed $1); do
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left+=("$lib" "$rpath" "$dir")
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done
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}
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add_needed $1
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while [ ''${#left[@]} -ne 0 ]; do
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next=''${left[0]}
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rpath=''${left[1]}
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ORIGIN=''${left[2]}
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left=("''${left[@]:3}")
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if [ -z ''${seen[$next]+x} ]; then
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seen[$next]=1
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# Ignore the dynamic linker which for some reason appears as a DT_NEEDED of glibc but isn't in glibc's RPATH.
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case "$next" in
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ld*.so.?) continue;;
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esac
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IFS=: read -ra paths <<< $rpath
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res=
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for path in "''${paths[@]}"; do
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path=$(eval "echo $path")
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if [ -f "$path/$next" ]; then
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res="$path/$next"
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echo "$res"
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add_needed "$res"
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break
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fi
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done
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if [ -z "$res" ]; then
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echo "Couldn't satisfy dependency $next" >&2
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exit 1
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fi
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fi
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done
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'';
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2018-06-13 03:07:36 +03:00
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in
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runCommandCC "extra-utils-${name}"
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{
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2018-06-26 07:08:04 +03:00
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nativeBuildInputs = [ nukeReferences ];
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2018-06-13 03:07:36 +03:00
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allowedReferences = [ "out" ];
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}
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''
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set +o pipefail
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mkdir -p $out/bin $out/lib
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ln -s $out/bin $out/sbin
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copy_bin_and_libs() {
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[ -f "$out/bin/$(basename $1)" ] && rm "$out/bin/$(basename $1)"
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2018-07-07 22:28:59 +03:00
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cp -pdv $1 $out/bin
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2018-06-13 03:07:36 +03:00
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}
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${install_packages}
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# Copy ld manually since it isn't detected correctly
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cp -pv ${glibc.out}/lib/ld*.so.? $out/lib
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2018-06-26 07:08:04 +03:00
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2018-06-13 03:07:36 +03:00
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# Copy all of the needed libraries
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find $out/bin $out/lib -type f | while read BIN; do
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echo "Copying libs for executable $BIN"
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2018-06-26 07:08:04 +03:00
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for LIB in $(${findLibs}/bin/find-libs $BIN); do
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2018-06-13 03:07:36 +03:00
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TGT="$out/lib/$(basename $LIB)"
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if [ ! -f "$TGT" ]; then
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SRC="$(readlink -e $LIB)"
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cp -pdv "$SRC" "$TGT"
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fi
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done
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done
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# Strip binaries further than normal.
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chmod -R u+w $out
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2018-07-08 06:04:23 +03:00
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stripDirs "$STRIP" "lib bin" "-s"
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2018-06-13 03:07:36 +03:00
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# Run patchelf to make the programs refer to the copied libraries.
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find $out/bin $out/lib -type f | while read i; do
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if ! test -L $i; then
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2018-07-07 22:28:59 +03:00
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echo "nuking refs from $i..."
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2018-06-13 03:07:36 +03:00
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nuke-refs -e $out $i
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fi
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done
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find $out/bin -type f | while read i; do
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if ! test -L $i; then
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echo "patching $i..."
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patchelf --set-interpreter $out/lib/ld*.so.? --set-rpath $out/lib $i || true
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fi
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done
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# TODO : make a test-case for this
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# # Make sure that the patchelf'ed binaries still work.
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# echo "testing patched programs..."
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# $out/bin/ash -c 'echo hello world' | grep "hello world"
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# export LD_LIBRARY_PATH=$out/lib
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# $out/bin/mount --help 2>&1 | grep -q "BusyBox"
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''
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