FlaDude1 wrote: > When I check what glibc packages are installed I see this > # yum list all|grep glibc > glibc.i686 2.5-24 installed > glibc.x86_64 2.5-24 installed > glibc-common.x86_64 2.5-24 installed These include the runtime support libraries, but not development files (i.e. no headers.) > Should I install glibc-devel-2.5-24.x86_64.rpm? What about > glibc-headers-2.5-24.x86_64.rpm too? Or are these installed with what is > already installed? Just "yum install glibc-devel" and let yum resolve the dependencies, that's its job. Note that if you want to compile 32 bit code you'll also need to "yum install glibc-devel.i386". Brian