Hi, Is it correct, that FC3's gcc on x86_64 uses these multilibs: $ x86_64-redhat-linux-gcc -print-multi-lib .; 32;@m32 IMO, this is wrong and should either be (assuming . matching -m64 | lib64) .; 32;../lib or (assuming . matching -m32 | lib) .; 64;../lib64 If x86_64 gcc was using one of the latter muliblib-sets, gcc -m64 -L/xxx/lib would automatically pickup m64 compiled libs from /xxx/lib/../lib64, instead of those from /xxx/lib. Unfortunately I don't have access to x86_64 systems :-( Ralf
