When I try tou build from source on solaris2, I get: ../../ghc/driver/ghc -c -o storage/SMmark_mg.o -hi-diffs -dcore-lint -link-chk -optcO-DIN_GHC_RTS=1 -optc-DMARK_REG_MAP -hisuf _mg.hi -O -gransim -optc-DGCap storage/SMmark.hc storage/SMmark.lhc:1199: incompatible types in assignment storage/SMmark.lhc:1701: warning: assignment makes integer from pointer without a cast storage/SMmark.lhc:1714: warning: assignment makes pointer from integer without a cast *** Error code 1 make: Fatal error: Command failed for target `storage/SMmark_mg.o' Current working directory /nfs/isd/hdaume/ghc-0.29/ghc/runtime *** Error code 1 make: Fatal error: Command failed for target `all' any idea what's going wrong. i took a look at the file, and the error is in this block: default: /* update the register we just did; save the old mstack */ mstack = r->rR[oldpos - 2].p; r->rR[oldpos - 2] = Mark; break; specifically, the r->rR[oldpos - 2] line. any ideas? -- Hal Daume III "Computer science is no more about computers | hdaume@isi.edu than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume