nixpkgs/pkgs/development/compilers/open-watcom/bin.nix
2021-12-06 11:05:03 -05:00

124 lines
2.9 KiB
Nix

{ lib, stdenvNoCC, fetchurl, qemu, expect, writeScript, writeScriptBin, ncurses, bash, coreutils }:
let
# We execute all OpenWatcom binaries in qemu-user, because otherwise
# some binaries (most notably the installer itself and wlib) fail to
# use the stat() systemcall. The failure mode is that it returns
# EOVERFLOW for completely legitimate requests. This seems like an
# incompatibility of new Linux kernels to run this ancient binary.
wrapLegacyBinary = writeScript "wrapLegacyBinary" ''
#!${bash}/bin/bash
set -eu
if [ $# -ne 2 ]; then
echo "Usage: $0 unwrapped-binary wrapped-binary"
exit 1
fi
IN="$(${coreutils}/bin/realpath $1)"
OUT="$2"
ARGV0="$(basename $2)"
cat > "$OUT" <<EOF
#!${bash}/bin/bash
TERMINFO=${ncurses}/share/terminfo TERM=vt100 exec ${qemu}/bin/qemu-i386 -0 $ARGV0 $IN "\$@"
EOF
chmod +x "$OUT"
'';
wrapInPlace = writeScriptBin "wrapInPlace" ''
#!${bash}/bin/bash
set -eu
if [ $# -ne 1 ]; then
echo "Usage: $0 unwrapped-binary"
exit 1
fi
TARGET="$1"
mv "$TARGET" "$TARGET-unwrapped"
chmod +x "$TARGET-unwrapped"
exec ${wrapLegacyBinary} "$TARGET-unwrapped" "$TARGET"
'';
# Do a scripted installation of OpenWatcom with its original installer.
#
# If maintaining this expect script turns out to be too much of a
# hassle, we can switch to just using `unzip' on the installer and
# the correct file permissions manually.
performInstall = writeScriptBin "performInstall" ''
#!${expect}/bin/expect -f
spawn [lindex $argv 0]
# Wait for button saying "I agree" with escape sequences.
expect "gree"
# Navigate to "I Agree!" and hit enter.
send "\t\t\n"
expect "Install Open Watcom"
# Where do we want to install to.
send "$env(out)\n"
expect "will be installed"
# Select Full Installation, Next
send "fn"
expect "Setup will now copy"
# Next
send "n"
expect "completed successfully"
send "\n"
'';
in
stdenvNoCC.mkDerivation rec {
pname = "open-watcom-bin";
version = "1.9";
name = "${pname}-unwrapped-${version}";
src = fetchurl {
url = "http://ftp.openwatcom.org/install/open-watcom-c-linux-${version}";
sha256 = "1wzkvc6ija0cjj5mcyjng5b7hnnc5axidz030c0jh05pgvi4nj7p";
};
nativeBuildInputs = [ wrapInPlace performInstall ];
dontUnpack = true;
dontConfigure = true;
buildPhase = ''
cp ${src} install-bin-unwrapped
wrapInPlace install-bin-unwrapped
'';
installPhase = ''
performInstall ./install-bin-unwrapped
for e in $(find $out/binl -type f -executable); do
echo "Wrapping $e"
wrapInPlace "$e"
done
'';
meta = with lib; {
description = "A C/C++ Compiler (binary distribution)";
homepage = "http://www.openwatcom.org/";
license = licenses.watcom;
platforms = [ "x86_64-linux" "i686-linux" ];
maintainers = [ maintainers.blitz ];
};
}