nixpkgs/pkgs/games/ut2004demo/builder.sh
John Wiegley 28b6fb61e6 Change occurrences of gcc to the more general cc
This is done for the sake of Yosemite, which does not have gcc, and yet
this change is also compatible with Linux.
2014-12-26 11:06:21 -06:00

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source $stdenv/setup
skip=7976
bunzip2 < $src | (dd bs=1 count=$skip of=/dev/null && dd bs=1M) | tar xvf - ut2004demo.tar
mkdir $out
(cd $out && tar xvf -) < ut2004demo.tar
# Patch the executable from ELF OS/ABI type `Linux' (3) to `SVR4' (0).
# This doesn't seem to matter to ld-linux.so.2 at all, except that it
# refuses to load `Linux' executables when invokes explicitly, that
# is, when we do `ld-linux.so.2 $out/System/ut2004-bin', which we need
# to override the hardcoded ELF interpreter with our own.
# This is a horrible hack, of course. A better solution would be to
# patch Glibc so it accepts the `Linux' ELF type as well (why doesn't
# it?); or to use FreeBSD's `brandelf' program to set to ELF type
# (which is a bit cleaner than patching using `dd' :-) ).
#(cd $out/System && (echo -en "\000" | dd bs=1 seek=7 of=ut2004-bin conv=notrunc))
# Set the ELF interpreter to our own Glibc.
for i in "$out/System/ucc-bin" "$out/System/ut2004-bin"; do
patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" "$i"
done