I compiled a program in two machines, both are using the same gcc, MySQL library, and glibc (both are RedHat 9). The first machine (MACHINE_1) produced 20 KB binary size, but in second machine (MACHINE_2) produced 181 KB binary size. I know that the problem is MACHINE_2 cant dynamically link the libray. How can I fix this in MACHINE_2 so it can produce dynamic link? Here is my compile script : gcc -o iaac iaac.c -I/usr/include/mysql -L/usr/lib/mysql -lmysqlclient -lz Please help me. in MACHINE_1 : $ ldd iaac libmysqlclient.so.12 => /usr/lib/libmysqlclient.so.12 (0x4001c000) libz.so.1 => /usr/lib/libz.so.1 (0x40052000) libc.so.6 => /lib/libc.so.6 (0x40060000) libcrypt.so.1 => /lib/libcrypt.so.1 (0x40187000) libnsl.so.1 => /lib/libnsl.so.1 (0x401b3000) libm.so.6 => /lib/libm.so.6 (0x401c7000) libnss_files.so.2 => /lib/libnss_files.so.2 (0x401e8000) libnss_dns.so.2 => /lib/libnss_dns.so.2 (0x401f3000) libresolv.so.2 => /lib/libresolv.so.2 (0x401f7000) /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000) in MACHINE_2 : $ ldd iaac libz.so.1 => /usr/lib/libz.so.1 (0x4001d000) libc.so.6 => /lib/i686/libc.so.6 (0x4002c000) /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000) __________________________________ Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time. http://taxes.yahoo.com/filing.html