boost built project on i386 fails to link - c++

Question

I am using a project named "GenericMod" which internally uses boost library 1.58.0.
Previously the boost 1.58 was compiled on a Red Hat Enterprise Linux Server release 5.8 (Tikanga)
whose gcc -v output was as follows
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --disable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic --host=x86_64-redhat-linux
Thread model: posix
gcc version 4.1.2 20080704 (Red Hat 4.1.2-55)
It was compiled using the following command
./b2 install -a --includedir=testbuild/include --libdir=testbuild/lib --layout=system variant=release target-os=linux link=static runtime-link=static address-model=32 cxxflags=-fPIC
Now, when the project "GenericMod" was build, on the same machine, build was successful and there was no error.
But recently the build environment was changed. The project is being built in a new machine now which is Red Hat Enterprise Linux Server release 5.9 (Tikanga)
and its gcc -v output
Using built-in specs.
Target: i386-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --disable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic --host=i386-redhat-linux
Thread model: posix
gcc version 4.1.2 20080704 (Red Hat 4.1.2-54)
When the project is built in this machine now, i was getting linker errors (probably as the boost libraries were built on a different environment).
So i built the boost 1.58.0 in this machine again with the same build command.
./b2 install -a --includedir=testbuild/include --libdir=testbuild/lib --layout=system variant=release target-os=linux link=static runtime-link=static address-model=32 cxxflags=-fPIC
Now when the project is built in this machine, my understanding is that there shouldnt be any error and the build should go through link phase.
But the linker error still occurs.
libboost_thread.a(thread.o): In function `boost::thread::physical_concurrency()':
thread.cpp:(.text+0x2084): undefined reference to `std::ctype<char>::_M_widen_init() const'
Can someone please explain why is this happening ? I have been breaking my head past week for this and couldn;t get enough explanation in other places.
Should i include some flag to specify the build for i386?
Thanks in advance