diff -N -r -u -b boost_1_34_0/tools/jam/src/Jambase boost_1_34_0_amiga/tools/jam/src/Jambase
--- boost_1_34_0/tools/jam/src/Jambase	2006-03-15 01:43:12 
+++ boost_1_34_0_amiga/tools/jam/src/Jambase	2007-05-12 20:03:48 
@@ -854,6 +854,22 @@
     NOARSCAN    ?= true ;
     STDHDRS     ?= /boot/develop/headers/posix ;
 }
+else if $(OS) = AMIGA
+{
+    BINDIR      ?= /sdk/local/c ;
+    C++         ?= g++ ;
+    C++FLAGS    ?= -mcrt=clib2 ;
+    CC          ?= gcc ;
+    CCFLAGS     ?= -mcrt=clib2 ;
+    EXEMODE     ?= ;
+    FILEMODE    ?= ;
+    LIBDIR      ?= /sdk/local/clib2/lib ;
+    LINKLIBS    ?= -lunix ;
+    NOARSCAN    ?= true ;
+    YACC        ?= yacc ;
+    YACCFILES   ?= y.tab ;
+    YACCFLAGS   ?= -d ;
+}
 else if $(UNIX)
 {
     switch $(OS)
@@ -861,10 +877,6 @@
     case AIX :
     LINKLIBS    ?= -lbsd ;
 
-    case AMIGA :
-    CC          ?= gcc ;
-    YACC        ?= "bison -y" ;
-
     case CYGWIN :   
     CC          ?= gcc ;
     CCFLAGS     += -D__cygwin__ ;
@@ -2433,6 +2445,18 @@
 }
 
 #
+# AmigaOS specific actions
+#
+
+else if $(AMIGA)
+{
+    actions Link bind NEEDLIBS
+    {
+    $(LINK) $(LINKFLAGS) -o $(<) $(UNDEFS) $(>) $(NEEDLIBS) $(LINKLIBS) -lunix
+    }
+}
+
+#
 # Backwards compatibility with jam 1, where rules were uppercased.
 #