Who could, please, consult on the package setting in ghc-5.00.1 ? Let the project foo consist of the files /t/A.hs /t/t1/B.hs, B import A, the user work in /u/ and exploit foo in compiling, linking and interpreting.

Everything seems to work below, except `ghci -package' and `ghc -c -package-name foo'

(ghc-5.00.1 compiled from source for Linux, i386-unknown). What I do:

------------------------------------------------- * apply ghc --make B;

That should be ghc -package-name foo --make B. because you're building modules for package 'foo'.

* move all *.o *.hi files to /t/export/ ; * command cd /t/export/ ar -q libHSfoo.a *.o (creating a library)

* create a file p.txt containing

Package {name = "foo", import_dirs = ["/t/export" ], source_dirs = [], library_dirs = ["/t/export" ], hs_libraries = ["HSfoo"], extra_libraries = [], include_dirs = [], c_includes = [], package_deps = [], extra_ghc_opts = [], extra_cc_opts = [], extra_ld_opts = [] } and apply ghc-pkg -a < p.txt adding a package foo to ghc. -------------------------------------------------

Then, for the user module /u/Main.hs importing B, the user commands cd /u; ghc -c -package foo Main.hs ghc -o run Main.o -package foo - and it works. But ghci -package foo yields Loading package foo ... can't find .o or .so/.DLL for: HSfoo (libHSfoo.so: cannot open shared object file: No such file or directory)

GHCi can't load .a files (at the moment). You can build a .o file from a .a file like so (with GNU ld): ld --whole-archive libHSfoo.a -o libHSfoo.o Cheers, Simon