Odd behaviour with gm2 on Solaris 11.3/sparc

[john o goyo]

Having finally built and installed gm2, I decided to try it on a simple 
module.

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

   FROM InOut IMPORT WriteString, WriteLn;

BEGIN
   WriteString("Modula-2. What else?"); WriteLn;
END first.
[~/prj/tst]=> gm2 first.mod
[~/prj/tst]=> ls -l a.out
-rwxr-xr-x   1 johng    staff     512888 Nov 24 18:00 a.out
[~/prj/tst]=> ./a.out
Modula-2. What else?
[~/prj/tst]=> gm2 -S first.mod
first.mod:1:8: note: In program module â: dynamic linking enabled but no 
module ctor list has been created, hint use -fuse-list=filename or 
-fgen-module-list=-
    1 | MODULE first;
      |        ^~~~~
[~/prj/tst]=> wc first.s
     448     953    7225 first.s
[~/prj/tst]=> gm2 -O2 first.mod
Undefined                       first referenced
 symbol                             in file
SFIO_OpenToWrite 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
Selective_ReadCharRaw 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
Selective_KillTime 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
DynamicStrings_InitString 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
SFIO_Exists 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
DynamicStrings_ConCatChar 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
SFIO_WriteS 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
Selective_InitSet 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
DynamicStrings_RemoveWhitePrefix 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
Selective_InitTime 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
Selective_FdIsSet 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
StringConvert_stoc 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
StringConvert_stoi 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
StringConvert_ctos 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
StringConvert_itos 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
Selective_FdZero 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
StringConvert_CardinalToString 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
Selective_FdSet 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
DynamicStrings_char 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
DynamicStrings_Mark 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
Selective_KillSet 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
DynamicStrings_KillString 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
DynamicStrings_ConCat 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
DynamicStrings_Length 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
SFIO_OpenToRead 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(InOut.o)
Selective_Select 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
Selective_MaxFdsPlusOne 
/home/build/gm2/sol11/lib/gcc/sparc-sun-solaris2.11/13.0.0/m2/m2log/libm2log.a(Keyboard.o)
ld: fatal: symbol referencing errors
collect2: error: ld returned 1 exit status

I do not understand this behaviour.

Sincerely,
john