can't build guile 1.6.4 with macosx

[Clem Wang]

i'm running macosx 10.3.4

compiling cs_os_dep.c fails on line 380:

# ifndef mach_type_known
        --> unknown machine type
# endif

but it seems that these lines should have done the right thing:
# if defined(macosx)
#    define MACOSX
#    define POWERPC
#    define mach_type_known
# endif


putting in my own #define macosx before the #if is the obvious work
around, which allows the compilation to go finish.

Unfortunately, the link fails:

gcc -dynamiclib  -o .libs/libguile.12.3.0.dylib
.libs/libguile.12.3.0.dylib-master.o  -L../libguile-ltdl/.libs
-lguile-ltdl -lm -lc -install_name /usr/local/lib/libguile.12.dylib
-compatibility_version 16 -current_version 16.0
ld: Undefined symbols:
_environ


i did run
./configure prior to make.

i'm not sure what else you need to know or whether there is a problem with
my system.
g++ (GCC) 3.3 20030304 (Apple Computer, Inc. build 1495)
Autoconf version 2.12
GNU Make version 3.79, by Richard Stallman and Roland McGrath.
Built for powerpc-apple-darwin7.0


thanks,
clem