I'm trying to make Hat (2.00) on a ix86 Linux (RedHat 6.1) machine with nhc98-1.14 and ghc-5.02.3 already installed. I get the following during the make process. cd /home/ajc99/tools/hat-2.00/targets/ix86-Linux/obj/hattools && ghc -fglasgow-exts -package lang -o HatTrail Run.o FFIExtensions.o HighlightStyle.o PrettyLibHighlight.o SExp.o LowLevel.o HatTrail.o /home/ajc99/tools/hat-2.00/targets/ix86-Linux/obj/hattools/artutils.o /home/ajc99/tools/hat-2.00/targets/ix86-Linux/obj/hattools/hat-names.o /home/ajc99/tools/hat-2.00/targets/ix86-Linux/obj/hattools/observe.o -L/usr/lib -lglib /usr/local/funcprog//lib/ghc-5.02.3/libHSstd.a(PrelNum__42.o): In function `s5bt_2_alt': PrelNum__42.o(.text+0x93): undefined reference to `__gmpz_cmp_si' And many more undefined references to functions starting with __gmp, going on until: /usr/local/funcprog//lib/ghc-5.02.3/libHSrts.a(PrimOps.o): In function `divModIntegerzh_fast': PrimOps.o(.text+0xcc1): undefined reference to `__gmpz_init' PrimOps.o(.text+0xcce): undefined reference to `__gmpz_init' PrimOps.o(.text+0xcea): undefined reference to `__gmpz_fdiv_qr' collect2: ld returned 1 exit status make[1]: *** [/home/ajc99/tools/hat-2.00/lib/ix86-Linux/hat-trail] Error 1 make[1]: Leaving directory `/home/ajc99/tools/hat-2.00/src/hat/tools' make: *** [targets/ix86-Linux/hat-tools-ghc] Error 2 The full list is attached. Do you know what I'm doing wrong? Amanda