Hello, I know that this is somehow a recurring question, still the archives have not been helpful for finding a working solution. I'm writing the bindings[1] to bibutils[2], a set of utilities for converting from and to different bibliographic databases (MODS, bibtex, etc.). bibutilis uses a static library (which is not installed) to build a set of different binaries which are the installed utilities. Suppose I build the library in /tmp/bibutils. If I build the haskell bindings (hs-bibutils) with: runhaskell Setup.lhs configure --extra-include-dirs=/tmp/bibutils/lib --extra-lib-dirs=/tmp/bibutils/lib where libbibutils.a and the header files are located, then I can build a simple test[3] program with ghc --make test.hs and it works perfectly. When I tried to link citeproc-hs to hs-bibutils everything worked fine, too. But when I tried building pandoc, which uses the Template Haskell extension to generate some code at compilation time, I got a linker error when TH started its process: [...] [ 6 of 29] Compiling Text.Pandoc.ODT ( Text/Pandoc/ODT.hs, dist/build/Text/Pandoc/ODT.o ) Loading package ghc-prim ... linking ... done. [...] Loading package template-haskell ... linking ... done. ghc: /tmp/bibutils_3.43/lib/bibutils.o: unknown symbol `fields_add' Loading package hs-bibutils-0.1 ... linking ... ghc: unable to load package `hs-bibutils-0.1' So I went back to the test file with the original bindings. If I try to load it and run it on ghci I get the very same error: Prelude Main> main Loading package syb ... linking ... done. Loading package hs-bibutils-0.1 ... linking ... <interactive>: /tmp/bibutils/lib/bibutils.o: unknown symbol `fields_add' ghc: unable to load package `hs-bibutils-0.1' After searching the we I found this: http://article.gmane.org/gmane.comp.lang.haskell.cafe/23635 which states that GHCi cannot load static libraries (the same can be argued by reading the GHCi docs, indeed). After reading this thread: http://article.gmane.org/gmane.comp.lang.haskell.cafe/40412 I came to know that GHCi and GHC are not using the same linker, and, as far as I understand, TH uses the first one too. So I tried to build a dynamic library. ar -t /tmp/bibutils/lib/libbibutils.a to get the list of objects to link with: gcc -shared -o libbibutils.so *.o after compiling them with the -fPIC flag. But this library is not being loaded because of some undefined symbols: lib/libbibutils.so: undefined reference to `corps' lib/libbibutils.so: undefined reference to `asis' lib/libbibutils.so: undefined reference to `progname' These symbols refer to some variables defined as external entities, for instance: extern char progname[]; these entities are initialized by a stub.c file in the Haskell bindings: http://code.haskell.org/~arossato/hs-bibutils/cbits/stub.c Unfortunately my knowledge of such low level stuff is very very limited and I'm not seeing any way out. Is there one? Thanks, Andrea [1] http://code.haskell.org/~arossato/hs-bibutils/ [2] http://www.scripps.edu/~cdputnam/software/bibutils/ [3] the test.hs file import Text.Bibutils main :: IO () main = do init_globals "mods2bibtex" bibl <- bibl_init param <- bibl_initparams mods_in bibtex_out setFormatOpts param [bibout_brackets, bibout_uppercase] setBOM param setVerbose param bibl_read param bibl "/tmp/prova.biblio" mods_in bibl_write param bibl "-" bibtex_out return ()