Hi, there I am trying to install gcc 4.2 in a Xeon. During make, it stops at the following error mesg: checking for getrusage... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES. make[1]: *** [configure-target-libgfortran] Error 1 make[1]: Leaving directory `/u/ac/haibo/sys/gcc' make: *** [all] Error 2 I checked the config.log Here is the error mesg: configure:10293: /u/ac/haibo/sys/gcc/./gcc/xgcc -B/u/ac/haibo/sys/gcc/./gcc/ -B/u/ac/haibo/sys/x86_64-unknown-linux-gnu/bin/ -B/u/ac/haibo/sys/x86_64-unknown-linux-gnu/lib/ -isystem /u/ac/haibo/sys/x86_64-unknown-linux-gnu/include -isystem /u/ac/haibo/sys/x86_64-unknown-linux-gnu/sys-include -o conftest -std=gnu99 -O2 -g -O2 conftest.c >&5 /tmp/ccqY0GIK.o(.text+0x9): In function `main': /u/ac/haibo/sys/gcc/x86_64-unknown-linux-gnu/libgfortran/conftest.c:106: undefined reference to `setmode' /tmp/ccqY0GIK.o(.data+0x0): undefined reference to `setmode' collect2: ld returned 1 exit status configure:10299: $? = 1 Could you please suggest me how to solve this problem? Thanks Haibo