Problem(s) with cross-compiler

[Philip Munts]

I have built GCC 13.2.0 cross-toolchains, including GM2, with the recent 
Crosstool-NG release 1.26.0, on Debian 12 (Bookworm):

/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/aarch64-muntsos-linux-gnu-gm2 
--version
aarch64-muntsos-linux-gnu-gm2 (crosstool-NG 1.26.0) 13.2.0

The following test program compiles and run successfully with the Debian 12 
native compiler:

MODULE test_hello;

  FROM STextIO IMPORT WriteString, WriteLn;

BEGIN
  WriteLn;
  WriteString("Hello, World!");
  WriteLn;
  WriteLn;
END test_hello.

gm2 --version
gm2 (Debian 10.2.1-6) 10.2.1 20210110

gm2 -fiso -fsoft-check-all -Wpedantic -otest_hello test_hello.mod
./test_hello

Hello, World!

But when I try to compile the same program with the cross-compiler I get the 
following errors and warnings:

/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/aarch64-muntsos-linux-gnu-gm2 
-fiso -fsoft-check-all -Wpedantic -otest_hello test_hello.mod
cc1gm2: warning: command-line option '-isysroot 
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../aarch64-muntsos-linux-gnu/libc'
 is valid for C/C++/D/Fortran/ObjC/ObjC++ but not for Modula-2
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/SYSTEM.mod:31:1:
 error: In implementation module 'SYSTEM': symbol (memcpy) has already been 
imported
   31 | CONST
      | ^~~~~
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/M2RTS.mod:35:1:
 error: In implementation module 'M2RTS': symbol (ADDRESS) has already been 
imported
   35 | FROM ASCII IMPORT nl, nul ;
      | ^~~~
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/TextIO.mod:31:1:
 error: In implementation module 'TextIO': symbol (IOChan) has already been 
imported
   31 | FROM SYSTEM IMPORT ADR ;
      | ^~~~
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/IOChan.mod:32:1:
 error: In implementation module 'IOChan': symbol (IOConsts) has already been 
imported
   32 | FROM EXCEPTIONS IMPORT ExceptionSource, RAISE, AllocateSource,
      | ^~~~
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/IOLink.mod:31:1:
 error: In implementation module 'IOLink': symbol (SYSTEM) has already been 
imported
   31 | FROM Storage IMPORT ALLOCATE, DEALLOCATE ;
      | ^~~~
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/IOLink.mod:31:1:
 error: symbol (IOChan) has already been imported
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/RTfio.mod:30:1:
 error: In implementation module 'RTfio': symbol (DeviceTablePtr) has already 
been imported
   30 | FROM RTio IMPORT GetFile ;
      | ^~~~
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/RTgen.mod:35:1:
 error: In implementation module 'RTgen': symbol (DeviceTablePtr) has already 
been imported
   35 | IMPORT ChanConsts ;
      | ^~~~~~
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/RTgen.mod:46:1:
 error: symbol (doWBytes) has already been imported
   46 | FROM ChanConsts IMPORT FlagSet, readFlag, writeFlag, rawFlag,
      | ^~~~
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/RTgen.mod:46:1:
 error: symbol (GenDevIF) has already been imported
/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2pim/Indexing.mod:33:1:
 error: In implementation module 'Indexing': symbol (ADDRESS) has already been 
imported
   33 | CONST
      | ^~~~~

The warning appears to be annoying but harmless.  The errors though are 
blocking.

I have tried various combinations of -I, -flibs=, -fno-libs=-, and 
-fm2-whole-program to no avail.

I thought maybe the cross-compiler was either compiling the native SYSTEM.def 
and SYSTEM.mod instead of the cross, or both, or mixing up iso and pim, or 
something like that.  But strace only shows opening the proper cross SYSTEM.def 
and SYSTEM.mod:

[pid   551] openat(AT_FDCWD, "./SYSTEM.def", O_RDONLY) = -1 ENOENT (No such 
file or directory)
[pid   551] openat(AT_FDCWD, "./SYSTEM.def", O_RDONLY) = -1 ENOENT (No such 
file or directory)
[pid   551] openat(AT_FDCWD, 
"/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/SYSTEM.def",
 O_RDONLY) = 5
[pid   551] openat(AT_FDCWD, 
"/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/SYSTEM.def",
 O_RDONLY) = 5
[pid   551] openat(AT_FDCWD, "./SYSTEM.mod", O_RDONLY) = -1 ENOENT (No such 
file or directory)
[pid   551] openat(AT_FDCWD, "./SYSTEM.mod", O_RDONLY) = -1 ENOENT (No such 
file or directory)
[pid   551] openat(AT_FDCWD, 
"/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/SYSTEM.mod",
 O_RDONLY) = 6
[pid   551] openat(AT_FDCWD, 
"/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/SYSTEM.mod",
 O_RDONLY) = 6
[pid   551] openat(AT_FDCWD, 
"/usr/local/gcc-aarch64-muntsos-linux-gnu-ctng/bin/../lib/gcc/aarch64-muntsos-linux-gnu/13.2.0/m2/m2iso/SYSTEM.mod",
 O_RDONLY) = 72

Then I tried comparing the native SYSTEM.def with the cross SYSTEM.def, but 
they are essentially the same except for comments.

So now I'm stumped.  My ARM64 cross toolchain is available online at: 
http://repo.munts.com/debian12/amd64/gcc-aarch64-muntsos-linux-gnu-ctng-13.2.0-2023.340-debian12-amd64.deb