looks like I've got yet another compilation problem on Leopard: gcc -I../byterun -DCAML_NAME_SPACE -DNATIVE_CODE -DTARGET_power - DSYS_rhapsody -O -Wall -DDARWIN_VERSION_6 -D_FILE_OFFSET_BITS=64 - D_REENTRANT -c signals.c In file included from signals.c:31: signals_osdep.h: In function 'context_gpr_p': signals_osdep.h:137: error: dereferencing pointer to incomplete type signals_osdep.h:141: error: dereferencing pointer to incomplete type *** Error code 1 Happens even when I try to compile 3.09 version of OCaml (on PPC, Mac OS X v.10.5.1). Setting MACOSX_DEPLOYMENT_TARGET to 10.4 helps. Regards, Valentyn.