cross-compiling on Solaris 2.5 host to SunOS 4.1.4 target

[Mike Boyer <boyer@scrooge.cecer.army.mil>]

Hello,  I have been trying to setup a cross-compiler on my Solaris 2.5
Sparc 10 so that I could compile/link/assemble SunOS 4.1.4 programs and
have not been having much luck.  Currently the compile dies at the following
point with this message:

Testing libgcc1.  Ignore linker warning messages.
./xgcc -B./ -DCROSS_COMPILE -DIN_GCC -DSVR4   -I./include libgcc1-test.o -o 
libgcc1-test \
  -nostartfiles -nostdlib `./xgcc -B./ --print-libgcc-file-name`
libgcc1-test.o(.text+0x94): undefined reference to `umul'
libgcc1-test.o(.text+0xb4): undefined reference to `div'
libgcc1-test.o(.text+0xd8): undefined reference to `rem'
libgcc1-test.o(.text+0xf8): undefined reference to `udiv'
libgcc1-test.o(.text+0x11c): undefined reference to `urem'
make: *** [libgcc1-test] Error 1

Now in the GCC readme it says that this is normal if you did not
provide some sort of libgcc1.a file, but I have, or at least think I
have.  I will try to describe in as much detail as possible what
I have done so far.

1.	I set up a /usr/local/sparc-sun-sunos4.1.4 directory that contains
	the entire /usr/lib directory from a 4.1.4 machine.  Also the
	entire /usr/include directory.
	
2.	I build binutils-2.8.1 with build sparc-sun-solaris2.5 and target
	sparc-sun-sunos4.1.4.
	
	./configure --build=sparc-sun-solaris2.5 --target=sparc-sun-sunos4.1.4 
--enable-targets=sparc-sun-solaris2.5,sparc-sun-sunos4.1.4
	./configure --build=sparc-sun-solaris2.5 
--enable-targets=sparc-sun-solaris2.5,sparc-sun-sunos4.1.4

	Now the docs for binutils shows the following which I did (before)
	
	./configure --enable-targets=sparc-sun-solaris2.5,sparc-sun-sunos4.1.4
	
	which did not seem to do the same thing as the above two commands,
	however neither one seemed to have an effect on the results of
	libgcc1-test.o.
	
3.	I compiled gcc 2.7.2.2 on a sunos4.1.4 machine and copied the
	/usr/local/lib/gcc-lib/sparc-sun-sunos4.1.4 to my /usr/local/lib/gcc-lib
	directory.  I also copied libgcc1.a to the build directory as
	instructed in the gcc docs.  Lastly I copied the *crt* files
	over to my /usr/local/sparc-sun-sunos4.1.4/lib directory per
	the gcc doc.  (Attempts to compile past the libgcc1-test.o
	point produced complaints that crt0.o could not be found until
	I actually copied them the the build directory).
	
4.	The little bit I know about compiling and linking, does not
	"undefined reference to" mean that a library can not be found.
	I have not added anything to my environment variables.  Maybe
	this is part of the problem.  Any suggestions would be greatly
	appreciated.  Thanks.
	
--Mike Boyer
--UNIX System Administrator