diff -N -r -u -b boost_1_34_0/tools/jam/src/jambase.c boost_1_34_0_amiga/tools/jam/src/jambase.c
--- boost_1_34_0/tools/jam/src/jambase.c	2006-03-15 01:43:12 
+++ boost_1_34_0_amiga/tools/jam/src/jambase.c	2007-05-12 20:09:58 
@@ -555,15 +555,28 @@
 "NOARSCAN    ?= true ;\n",
 "STDHDRS     ?= /boot/develop/headers/posix ;\n",
 "}\n",
+"else if $(OS) = AMIGA\n",
+"{\n",
+"BINDIR      ?= /sdk/local/c ;\n",
+"C++         ?= g++ ;\n",
+"C++FLAGS    ?= -mcrt=clib2 ;\n",
+"CC          ?= gcc ;\n",
+"CCFLAGS     ?= -mcrt=clib2 ;\n",
+"EXEMODE     ?= ;\n",
+"FILEMODE    ?= ;\n",
+"LIBDIR      ?= /sdk/local/clib2/lib ;\n",
+"LINKLIBS    ?= -lunix ;\n",
+"NOARSCAN    ?= true ;\n",
+"YACC        ?= yacc ;\n",
+"YACCFILES   ?= y.tab ;\n",
+"YACCFLAGS   ?= -d ;\n",
+"}\n",
 "else if $(UNIX)\n",
 "{\n",
 "switch $(OS)\n",
 "{\n",
 "case AIX :\n",
 "LINKLIBS    ?= -lbsd ;\n",
-"case AMIGA :\n",
-"CC          ?= gcc ;\n",
-"YACC        ?= \"bison -y\" ;\n",
 "case CYGWIN :   \n",
 "CC          ?= gcc ;\n",
 "CCFLAGS     += -D__cygwin__ ;\n",
@@ -1660,6 +1673,13 @@
 "$(LINK) -o $(<) $(LINKFLAGS) $(>) $(NEEDLIBS) \"$(LINKLIBS)\"\n",
 "}\n",
 "}\n",
+"else if $(AMIGA)\n",
+"{\n",
+"actions Link bind NEEDLIBS\n",
+"{\n",
+"$(LINK) $(LINKFLAGS) -o $(<) $(UNDEFS) $(>) $(NEEDLIBS) $(LINKLIBS) -lunix\n",
+"}\n",
+"}\n",
 "rule BULK { Bulk $(<) : $(>) ; }\n",
 "rule FILE { File $(<) : $(>) ; }\n",
 "rule HDRRULE { HdrRule $(<) : $(>) ; }\n",