nixpkgs/pkgs/development/compilers/openjdk/make-bootstrap.nix

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{ runCommand, openjdk, nukeReferences }:
runCommand "${openjdk.name}-bootstrap.tar.xz" {} ''
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mkdir -pv openjdk-bootstrap/lib
# Do a deep copy of the openjdk
cp -vrL ${openjdk.home} openjdk-bootstrap/lib
# Includes are needed for building the native jvm
cp -vrL ${openjdk}/include openjdk-bootstrap
# The binaries are actually stored in the openjdk lib
ln -sv lib/openjdk/bin openjdk-bootstrap/bin
find . -name libjli.so
(cd openjdk-bootstrap/lib; find . -name libjli.so -exec ln -sfv {} libjli.so \;)
chmod -R +w openjdk-bootstrap
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# Remove components we don't need
find openjdk-bootstrap -name \*.diz -exec rm {} \;
find openjdk-bootstrap -name \*.ttf -exec rm {} \;
find openjdk-bootstrap -name \*.gif -exec rm {} \;
find openjdk-bootstrap -name src.zip -exec rm {} \;
rm -rf openjdk-bootstrap/lib/openjdk/jre/bin
# Remove all of the references to the native nix store
find openjdk-bootstrap -print0 | xargs -0 ${nukeReferences}/bin/nuke-refs
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# Create the output tarball
tar cv openjdk-bootstrap | xz > $out
''