Failed to Make ddd with gcc 3.1 on Solaris 7

[Konstantinos Konstantinides]

I am unable to compile ddd with gcc 3.1

System: Solaris 7 
5.7 Generic_106541-17 sun4u sparc SUNW,Ultra-60

gcc -v
Configured with: ../gcc-3.1/configure --prefix=/cirrus/smtools/gnu64
Thread model: posix
gcc version 3.1

DDD rev 3.3.1

Problem of failure: ddd/strclass.C

Error Message
make[1]: Entering directory `/home/kk/utilities/ddd-3.3.1/ddd'
c++ -DHAVE_CONFIG_H -I. -I. -I. -I./.. -isystem /usr/openwin/include   
-DNDEBUG -O2 -g -W -Wall -trigraphs  -c strclass.C
In file included from
/cirrus/smtools/gnu64/include/g++-v3/backward/iostream.h:31,
                 from strclass.h:412,
                 from strclass.C:41:
/cirrus/smtools/gnu64/include/g++-v3/backward/backward_warning.h:32:2:
warning: #warning This file includes at least one deprecated or
antiquated header. Please consider using one of the 32 headers found in
section 17.4.1.2 of the C++ standard. Examples include substituting the
<X> header for the <X.h> header for C++ includes, or <sstream> instead
of the deprecated header <strstream.h>. To disable this warning use
-Wno-deprecated.
In file included from strclass.C:41:
strclass.h: In member function `string&
string::operator=(std::ostrstream&)':
strclass.h:1059: warning: unused variable `const int frozen'
strclass.C: In function `std::istream& operator>>(std::istream&,
string&)':
strclass.C:1443: invalid conversion from `int' to `std::_Ios_Iostate'
strclass.C:1443:   initializing argument 1 of `void
std::basic_ios<_CharT, 
   _Traits>::clear(std::_Ios_Iostate) [with _CharT = char, _Traits = 
   std::char_traits<char>]'
make[1]: *** [strclass.o] Error 1
make[1]: Leaving directory `/home/kk/utilities/ddd-3.3.1/ddd'
make: *** [all-recursive] Error 1


-- 
Konstantinos Konstantinides

Cirrus Logic, Inc.              tel: (510) 624-7146
46831 Lakeview Blvd.            Fax: (510) 249-4980
Fremont, CA 94538               e-mail:K.Konstantinides@cirrus.com