[C++-sig] Unable to create bjam

[chuzo okuda]

I have been getting pre-build Boost.Jam executables from the web site.
But I could not build bjam by using make YACC= in
.../tools/build/jam_src.
It builds on OSF1 platform works, but not on AIX platform. Any helpful
suggestion of building bjam on IBM platform is appreciated...

frost067(215) make YACC=
cc -o jam0  command.c compile.c execnt.c execunix.c execvms.c expand.c
filent.c
fileos2.c fileunix.c filevms.c glob.c hash.c hdrmacro.c headers.c jam.c
jambase.c jamgram.c lists.c make.c make1.c newstr.c option.c parse.c
pathunix.c pathvms.c regexp.c rules.c scan.c search.c subst.c
timestamp.c variable.c modules.c strings.c filesys.c builtins.c pwd.c
command.c:
compile.c:
execnt.c:
execunix.c:
execvms.c:
expand.c:
filent.c:
fileos2.c:
fileunix.c:
filevms.c:
glob.c:
hash.c:
hdrmacro.c:
headers.c:
jam.c:
jambase.c:
jamgram.c:
lists.c:
make.c:
make1.c:
"make1.c", line 306.17: 1506-046 (S) Syntax error.
"make1.c", line 306.20: 1506-045 (S) Undeclared identifier using.
"make1.c", line 506.25: 1506-046 (S) Syntax error.
"make1.c", line 506.28: 1506-045 (S) Undeclared identifier must.
"make1.c", line 509.28: 1506-045 (S) Undeclared identifier using.
newstr.c:
option.c:
parse.c:
pathunix.c:
pathvms.c:
regexp.c:
rules.c:
scan.c:
search.c:
subst.c:
timestamp.c:
variable.c:
modules.c:
strings.c:
filesys.c:
builtins.c:
pwd.c:
make: *** [jam0] Error 1