#9213: Maybe important CPP warnings on ghcautoconf.h from cpphs -------------------------------------+------------------------------------- Reporter: asr | Owner: Type: bug | Status: infoneeded Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by asr): I realised Alex is including the file {{{ghcconfig.h}}} which generates the warning when using cpphs. An example using the file https://github.com/simonmar/alex/blob/master/examples/Tokens.x: {{{ $ ghc --version The Glorious Glasgow Haskell Compilation System, version 7.8.4 $ alex --version Alex version 3.1.4, (c) 2003 Chris Dornan and Simon Marlow $ cpphs --version cpphs 1.18.6 $ alex Tokens.x $ ghc -pgmPcpphs -optP--cpp Tokens.hs Warning: trailing characters after #if directive in file /usr/local/stow/ghc-7.8.4-bin/lib/ghc-7.8.4/include/ghcautoconf.h at line 383 col 1: AC_APPLE_UNIVERSAL_BUILD [1 of 1] Compiling Main ( Tokens.hs, Tokens.o ) Linking Tokens ... }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9213#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler