58 lines
941 B
Nix
58 lines
941 B
Nix
{
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stdenv
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, cc
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, cflags ? null
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, gitBranch
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, blocksize ? 2048
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, particles ? 16384
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, timesteps ? 10
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}:
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stdenv.mkDerivation {
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name = "nbody";
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src = builtins.fetchGit {
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url = "ssh://git@bscpm02.bsc.es/rarias/nbody.git";
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ref = gitBranch;
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};
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buildInputs = [
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cc
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];
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preBuild = (if cflags != null then ''
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makeFlagsArray+=(CFLAGS="${cflags}")
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'' else "");
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makeFlags = [
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"CC=${cc.cc.CC}"
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"BS=${toString blocksize}"
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];
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dontPatchShebangs = true;
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installPhase = ''
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mkdir -p $out/bin
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cp nbody $out/bin/
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cat > $out/bin/run <<EOF
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#!/bin/sh
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# We need to enter the nix namespace first, in order to have /nix
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# available, so we use this hack:
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if [ ! -e /nix ]; then
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echo "running nix-setup \$0"
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exec nix-setup \$0
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fi
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ls -l /nix
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pwd
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exec $out/bin/nbody -p ${toString particles} -t ${toString timesteps}
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EOF
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chmod +x $out/bin/run
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'';
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}
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