Hello I ran previously my computer with fc6 I have installed fc9 on my computer which is a x86_64 one, and now I am unable to compile C programs with the -m32 (32 bits) mode. I discovered that a lot of files and links have been removed from fc6 : Files : /usr/lib/*crti.o /usr/lib/crt1.o /usr/lib/ctrn.o Links : /lib/libc.so /lib/libm.so /lib/libz.so /usr/lib/libltdl.so I copied them back from fc6 (not erased, juste in a renamed partition), but may be it is a wrong idea, since I have now the following issue ( and no key given by Google) : > cat conftest.c; gcc -m32 conftest.c int main () { ; return 0; } /usr/lib/gcc/x86_64-redhat-linux/4.3.0/../../../../lib/crt1.o: In function `_start': (.text+0xc): undefined reference to `__libc_csu_fini' /usr/lib/gcc/x86_64-redhat-linux/4.3.0/../../../../lib/crt1.o: In function `_start': (.text+0x11): undefined reference to `__libc_csu_init' collect2: ld a retourné 1 code d'état d'exécution > uname -a Linux enescu.math.u-bordeaux1.fr 2.6.25.14-108.fc9.x86_64 #1 SMP Mon Aug 4 13:46:35 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux Please can you tell me what is the correct procedure to follow to be able to compile in 32bits mode with fc9 on a x86_84 computer ? Yours R.Butel