I have just obtained a Dell Precision 670n workstation with a 3.6 GHz Intel Xeon Processor running Red Hat Enterprise Linux WS v4 for EM64T 64bit system. I am also using The Portland Group 64bit Linux complete compilers 6.1. When I run a Make file I am getting this error: make[4]: Leaving directory `/home/tlwarre/Access/ACCESS/itools/config/util' okay, continuing in config/imake ../../config/util/makedepend -- -I../../include -I../.. -DBuild64 -Dlinux -DA DDC_ -DFUNCPROTO=15 -DNARROWPROTO -DCPP_PROGRAM="\"/lib/cpp\"" -- imake.c In file included from /usr/include/features.h:314, from /usr/include/stdio.h:28, from imake.c:145: /usr/include/sys/cdefs.h:31: #error "You need a ISO C conforming compiler to use the glibc headers" With previous versions of Red Hat Linux on 32 bit machines with the pgroup compilers I did not have this problem. Additionally, I have also tried the GNU compilers gcc, g++, g77 and g95 and also got the same error. Is there something different in the way you access the header files with the newer versions of Linux and is there a way I can fix this problem I can do to fix this problem? TW -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list