[moved to haskell-cafe]
{-# LANGUAGE CPP #-}
module Packer where
#define FLASH_APP_START 1 #define FLASH_APP_END 2 #define INSERT_SECTION(x) (#x, (FLASH_##x##_START, FLASH_##x##_END))
The CPP stringization operator # and the token-catenation operator ## are ANSI additions over the traditional K+R CPP. Ghc uses the - traditional flag to exclude them, because both # and ## are valid Haskell operators, and most people would not want them to be removed by the CPP preprocessor. There are also some other lexical differences between Haskell and C which make it a good ides for ghc to use cpp -traditional. However, if you really want to use ANSI additions, you can switch to cpphs, which does know about the lexical syntax of Haskell. http://haskell.org/cpphs To use it with ghc, you will need to pass the following extra options: ghc -cpp -pgmPcpphs -optP--cpp -optP-ansi Unfortunately, I'm not certain I can guarantee that the -ansi flag will take effect - it depends on whether ghc internally adds the - traditional argument before or after it. Regards, Malcolm