Greetings. The Debian autobuilders were unable to build hugs on a few platforms, and I tried building Hugs from the distribution tarball and got similar results on ia64 (on both Debian and Redhat). Here's what information I have. Please let me know if I can get more information for you. The error looks like this: ./ffihugs -N +G -W +L"../lib/exts/Storable_aux.c" HugsStorable /usr/lib/crt1.o: In function `_start': /usr/lib/crt1.o(.text+0x41): undefined reference to `main' collect2: ld returned 1 exit status runhugs: Error occurred Reading file "/house/ijones/tmp//lib/hugs/lib/exts/HugsStorable.hs": ERROR "/house/ijones/tmp//lib/hugs/lib/exts/HugsStorable.hs" - Error while running compilation command 'gcc -D__HUGS__ "-I/house/ijones/tmp//lib/hugs/include""/house/ijones/tmp//lib/hugs/lib/exts/HugsStorable.c" -o "/house/ijones/tmp//lib/hugs/lib/exts/HugsStorable.so" ../lib/exts/Storable_aux.c' This seems to have something to do with the "MKDLL_CMD" macro (in src/config.h) getting a bad value for these platforms. In particular, on ia64, it reads: define MKDLL_CMD "gcc " whereas on i386, it reads: #define MKDLL_CMD "gcc -shared" This is what looks like the relevant configure output on ia64: checking if '/LD' builds loadable libraries... checking if '/LD /ML /nologo' builds loadable libraries... checking if '-shared' builds loadable libraries... checking if '-bundle' builds loadable libraries... checking if '-bundle -lc' builds loadable libraries... checking if '-r' builds loadable libraries... And the same configure output on i386: checking if '/LD' builds loadable libraries... checking if '/LD /ML /nologo' builds loadable libraries... checking if '-shared' builds loadable libraries... -shared checking if '-bundle' builds loadable libraries... (cached) -shared checking if '-bundle -lc' builds loadable libraries... (cached) -shared checking if '-r' builds loadable libraries... (cached) -shared It also fails with similar output on hppa and alpha. Complete build logs for a variety of architectures can be found here (where you can see that the previous release was able to build on these architectures): http://buildd.debian.org/build.php?arch=&pkg=hugs98 However, when I alter config.h by hand to include the -shared flag, and rerun make;make install (without rerunning configure) I get this output: ./ffihugs +N +G -W +L"../libraries/Hugs/Storable_aux.c" Hugs.Storable ./ffihugs +N +G -W Foreign.Marshal.Alloc runhugs: Error occurred Reading file "/house/ijones/tmp//lib/hugs/libraries/Foreign/Marshal/Alloc.hs": Reading file "/house/ijones/tmp//lib/hugs/libraries/Foreign/C/Types.hs": Reading file "/house/ijones/tmp//lib/hugs/libraries/Foreign/C/TypesISO.hs": Reading file "/house/ijones/tmp//lib/hugs/libraries/Foreign/Storable.hs": Reading file "/house/ijones/tmp//lib/hugs/libraries/Control/Monad.hs": Reading file "/house/ijones/tmp//lib/hugs/libraries/Hugs/Storable.hs": Reading file "/house/ijones/tmp//lib/hugs/libraries/Foreign/Storable.hs": Reading file "/house/ijones/tmp//lib/hugs/libraries/Foreign/C/TypesISO.hs": Type checking ERROR "/house/ijones/tmp//lib/hugs/libraries/Foreign/C/TypesISO.hs":41 - Implementation of .&. requires extra context *** Expected type : Bits CPtrdiff => CPtrdiff -> CPtrdiff -> CPtrdiff *** Missing context : Bits Int64 Let me know if I can offer any more help. peace, isaac