Re: Building GHC 6.12 with GHC 6.12 + alex

31 Dec 2009

      On Thu, Dec 31, 2009 at 9:19 AM, Antoine Latter  wrote:
...
Folks,
I've run into trouble building GHC 6.12 with alex built from GHC 6.12:
"/Users/alatter/usr/bin/alex"  -g compiler/parser/Lexer.x -o
compiler/stage1/build/Lexer.hs
alex: compiler/parser/Lexer.x: hGetContents: invalid argument (Illegal
byte sequence)
however things like:
ghci> readFile "compiler/parser/Lexer.x"
apear to work just fine. Has anyone else seen this? Has anyone else
succeeded in this?
This is on Mac OS X 10.6, running on Intel Core 2 Duo. I'm trying to
compile a recent pull of the 6.12 branch.
I've progressed to an advanced state of disfunction. I've patched alex
src/Main.hs to use the following:

#if __GLASGOW_HASKELL__ >= 612
readFile :: FilePath -> IO String
readFile file = do
  h <- openFile file ReadMode
  hSetEncoding h utf8
  hGetContents h
#endif

Now, I get the following error on the same file:

$ ~/src/alex/dist/build/alex/alex -g compiler/parser/Lexer.x -o compiler/stage1/
build/Lexer.hs
alex: compiler/stage1/build/Lexer.hs: commitAndReleaseBuffer: invalid
argument (Illegal byte sequence)