Problem building egcs-1.1b on SunOS 5.5.1

[Johann Petrak <johann at ai dot univie dot ac dot at>]

No matter what compiler I use to build the egcs-1.1,
I keep getting the following link error, when I try to 
build it on a SunOS 5.5.1 Generic sun4u sparc SUNW,Ultra-2
system:

/opt/GCC281/bin/gcc  -DIN_GCC  -DSVR4  -g  -DHAVE_CONFIG_H -DHAIFA  -o
collect2 collect2.o tlink.o hash.o \
  cplus-dem.o underscore.o version.o choose-temp.o mkstemp.o obstack.o
alloca.o    
Undefined                       first referenced
 symbol                             in file
sys_siglist                         collect2.o
ld: fatal: Symbol referencing errors. No output written to collect2
gnumake[2]: *** [collect2] Error 1
gnumake[2]: Leaving directory `/oberlaa/src/egcs-1.1b/BUILD-solaris/gcc'
gnumake[1]: *** [bootstrap-lean] Error 2
gnumake[1]: Leaving directory `/oberlaa/src/egcs-1.1b/BUILD-solaris/gcc'
gnumake: *** [bootstrap-lean] Error 2
Exit 2

(This run was an attempt to build egcs-1.1 using gcc2.8.1)

I did, in the egcs-1.1b directory:
  mkdir BUILD
  cd BUILD
  ../configure --enable-shared
  gnumake bootstrap-lean

What is the problem here?

Thank you for your help,

Johann Petrak


---
Johann Petrak                       Email: johann@ai.univie.ac.at
Austrian Research Institute for AI  Phone:     +43-1-533-61-12/13
Schottengasse 3                     Fax:       +43-1-532-61-12/77
A-1010 Vienna, AUSTRIA         http://www.ai.univie.ac.at/~johann