Trying to build gcc-4.1.2+gm2-20200507 on MacOS 10.5.8 (G5)

[john o goyo]

As others on this list, I try building gcc-4.1.2+gm2-20200507 on my G5 
running MacOS 10.5.8 (Darwin 9.8.0).

The build succeeds, "make check-gm2" only half works (below), and trying 
a simple test fails with a strange error (below).  I searched but found 
nothing useful.


Check-gm2 gave me the following:

                === gm2 Summary ===

# of expected passes            6611
# of unexpected failures        1394
# of unresolved testcases       1381

This is not as bad as sbb 
(https://lists.nongnu.org/archive/html/gm2/2020-04/msg00001.html) but 
not good, either.


Trying to compile a simple test program produced the following.

[~/prj/tst]=> cat what.mod
MODULE what;

FROM STextIO IMPORT WriteString, WriteLn;

BEGIN
  WriteString("Now what?"); WriteLn
END what.
[~/prj/tst]=> gm2 --version
GNU Modula-2  1.0.5  (20200529)
  grafted onto GCC 4.1.2
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv2: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
[~/prj/tst]=> gm2 -c -fiso what.mod
[~/prj/tst]=> gm2 -fiso what.mod
ld: in 
/Users/build/gm2/4.1.2/20200507/lib/gcc/powerpc-apple-darwin9.8.0/4.1.2/gm2/iso/libgm2iso.a(RTgenif.o), 
object file contains old DWARF debug info - rebuild with newer compiler
collect2: ld returned 1 exit status

Sincerely,
john