I am trying to install Kamailio 3.1.0 on Solaris 10 that is a sparc machine (v120) and is running a 64bit OS. When I originally performed the compile utilizing the instructions from the website, I was getting warnings about using 32 bit headers. I was able to compile and install successfully, but when I started Kamailio, loading of modules were failing due to "not found" error. The warning messages: "atomic/atomic_sparc.h:41:2: warning: #warning "sparc32 atomic operations support not tested"" I thought was because the target architecture specified sparc and not sparc64, so I tried specified the target architecture as listed below which got rid of the warning messages but then I got ELFCLASS32 error messages. What is the proper way to create a 64bit version of Kamailio on a sparc Solaris 10. It seems like the target architecure is not being configured properly and that may be causing other problems. I have included output from different commands about the environment and the commands that I entered to compile Kamailio. # make FLAVOUR=kamailio cfg target architecture <sparc>, host architecture <sparc64> # isainfo -n sparcv9 # uname -p sparc # uname -m sun4u # isainfo -v 64-bit sparcv9 applications vis 32-bit sparc applications vis v8plus div32 mul32 # isainfo -b 64 Here is what I entered to try and force the building of a 64 bit version and a sample error that I was getting. make FLAVOUR=kamailio prefix=/usr/local/kamailio-3.1 CPU=ultrasparc ARCH=sparc64 cfg LD (gcc) [M lcr.so] lcr.so ld: fatal: file /usr/local/lib/libpcre.so: wrong ELF class: ELFCLASS32 ld: fatal: File processing errors. No output written to lcr.so collect2: ld returned 1 exit status make[1]: *** [lcr.so] Error 1 make: *** [modules] Error 1 LD_LIBRARY_PATH=/lib/sparcv9:/usr/lib/sparcv9:/usr/sfw/lib/sparcv9:/usr/local/postgres/9.0-pgdg/lib/64 LD_RUN_PATH=/lib/sparcv9:/usr/lib/sparcv9:/usr/sfw/lib/sparcv9:/usr/local/postgres/9.0-pgdg/lib/64 PATH=/opt/csw/bin:/usr/sfw/bin:/usr/local/bin:/usr/local/postgres/9.0-pgdg/bin:/usr/sbin:/usr/bin:/usr/ccs/bin: # find . -name libpcre.so -print ./usr/local/lib/libpcre.so Thanks