Hi dear R-Help members: When I was building my R package, using $R CMD build --binary pkg it came out the following error: ........ ** libs Error: package 'methods' was built for x86_64-unknown-linux-gnu Execution halted The information about $R_HOME/library/methods/libs/methods.so is: $file methods.so methods.so: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), not stripped my machine is: $uname -a Linux whinev 2.4.21-37.EL #1 SMP Wed Sep 7 13:32:18 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux and I used the options below to build R src: ../configure --prefix=/home/whinev/R --enable-R-shlib CC="gcc -m32" CXXFLAGS="-m32 -O2 -g" FFLAGS="-m32 -O2 -g" FCFLAGS="-m32 -O2 -g" LDFLAGS="-L/usr/local/lib" LIBnn=lib --with-x=no Would you please tell me what the matter is? Thank you all! Whinev [[alternative HTML version deleted]]