After that I wrote ghc -fffi -c test.lhs. But when I call blah from ghci I get the error message: "test.o unknown symbol '_test'
I think ghc doen't link test.o to projekt.obj. What do I have to do?
I don't know about linking object files I've created myself, but to link an existing library (a .dll on my Windows system) I use these options: -L/path/to/library/file -lprojekt -I/path/to/header/include/directory/if/it/exists If the object file is in the same dir as test.lhs then you might get away with just the -l option. Also, you might have to rename projekt.obj to projekt.o (I don't know if this matters or not). See GHC Users Guide "4.10.7. Options affecting linking", for -L and -l: http://www.haskell.org/ghc/docs/latest/html/users_guide/options-phases.html# OPTIONS-LINKER And see "4.10.3 Options affecting the C pre-processor", for -I: http://www.haskell.org/ghc/docs/latest/html/users_guide/options-phases.html# C-PRE-PROCESSOR I believe you only need to use -I if you're compiling via-c (which happens if you use -O). ----------------------------------------- ***************************************************************** Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person(s) or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient(s) is prohibited. If you received this in error, please contact the sender and delete the material from any computer. *****************************************************************