@if ERRORLEVEL 1 goto error
nmake -f ms\ntdll.mak clean
+@if ERRORLEVEL 1 goto error
nmake -f ms\ntdll.mak
+@if ERRORLEVEL 1 goto error
nmake -f ms\ntdll.mak install
@if ERRORLEVEL 1 goto error
my ($from, $to);
#rename target temporarily
-rename($target, "tmptarg.s") || die "Can't rename $target\n";
+rename($target, "tmptarg.s") || die "Can't rename $target";
#edit target
-open IN,"tmptarg.s";
-open OUT, ">$target";
+open(IN,"tmptarg.s") || die "Can't open temporary file";
+open(OUT, ">$target") || die "Can't open output file $target";
while (<IN>)
{