Alastair Reid wrote:
> Any time you take two large C programs/libraries and try to merge
> them, you're likely to run into preprocessor (or compiler) related
> errors like those you describe. [...]
Sad, but very true! And GHC's headers are not very nice in this respect:
panne@jeanluc:~> grep '#define [^ \t][^ \t] ' /usr/lib/ghc-5.03/include/*
/usr/lib/ghc-5.03/include/PrimOps.h:#define C 0
/usr/lib/ghc-5.03/include/PrimOps.h:#define R 1
/usr/lib/ghc-5.03/include/PrimOps.h:#define C 1
/usr/lib/ghc-5.03/include/PrimOps.h:#define R 0
panne@jeanluc:~> grep '#define [^ \t][^ \t] ' /usr/lib/ghc-5.03/include/*
/usr/lib/ghc-5.03/include/Regs.h:#define R1 (BaseReg->rR1)
/usr/lib/ghc-5.03/include/Regs.h:#define R2 (BaseReg->rR2)
/usr/lib/ghc-5.03/include/Regs.h:#define F1 (BaseReg->rF1)
/usr/lib/ghc-5.03/include/Regs.h:#define F2 (BaseReg->rF2)
/usr/lib/ghc-5.03/include/Regs.h:#define F3 (BaseReg->rF3)
/usr/lib/ghc-5.03/include/Regs.h:#define F4 (BaseReg->rF4)
/usr/lib/ghc-5.03/include/Regs.h:#define D1 (BaseReg->rD1)
/usr/lib/ghc-5.03/include/Regs.h:#define D2 (BaseReg->rD2)
/usr/lib/ghc-5.03/include/Regs.h:#define L1 (BaseReg->rL1)
/usr/lib/ghc-5.03/include/Regs.h:#define Sp (BaseReg->rSp)
/usr/lib/ghc-5.03/include/Regs.h:#define Su (BaseReg->rSu)
/usr/lib/ghc-5.03/include/Regs.h:#define Hp (BaseReg->rHp)
And so on...
SimonM: What about a "poor man's" namespace, i.e. prefixing every macro,
type, etc. with "GHC"/"ghc"? OpenGL, GLUT, GTK, etc. do a similar thing,
and although it's a primitive measure, it's very effective.
Cheers,
S.
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