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path: root/pkgs/development/compilers/fpc/default.nix
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{ lib, stdenv, fetchurl, gawk }:

let startFPC = import ./binary.nix { inherit stdenv fetchurl; }; in

stdenv.mkDerivation rec {
  version = "3.2.0";
  pname = "fpc";

  src = fetchurl {
    url = "mirror://sourceforge/freepascal/fpcbuild-${version}.tar.gz";
    sha256 = "0f38glyn3ffmqww432snhx2b8wyrq0yj1njkp4zh56lqrvm19fgr";
  };

  buildInputs = [ startFPC gawk ];
  glibc = stdenv.cc.libc.out;

  # Patch paths for linux systems. Other platforms will need their own patches.
  patches = [
    ./mark-paths.patch # mark paths for later substitution in postPatch
  ];
  postPatch = ''
    # substitute the markers set by the mark-paths patch
    substituteInPlace fpcsrc/compiler/systems/t_linux.pas --subst-var-by dynlinker-prefix "${glibc}"
    substituteInPlace fpcsrc/compiler/systems/t_linux.pas --subst-var-by syslibpath "${glibc}/lib"
  '';

  makeFlags = [ "NOGDB=1" "FPC=${startFPC}/bin/fpc" ];

  installFlags = [ "INSTALL_PREFIX=\${out}" ];

  postInstall = ''
    for i in $out/lib/fpc/*/ppc*; do
      ln -fs $i $out/bin/$(basename $i)
    done
    mkdir -p $out/lib/fpc/etc/
    $out/lib/fpc/*/samplecfg $out/lib/fpc/${version} $out/lib/fpc/etc/
  '';

  passthru = {
    bootstrap = startFPC;
  };

  meta = with lib; {
    description = "Free Pascal Compiler from a source distribution";
    homepage = "https://www.freepascal.org";
    maintainers = [ maintainers.raskin ];
    license = with licenses; [ gpl2 lgpl2 ];
    platforms = platforms.linux;
    inherit version;
  };
}