> On Tue, Sep 2, 2014 at 8:56 PM, Andrew Haley <aph@xxxxxxxxxx> wrote: > > On 09/02/2014 04:07 PM, Jaya Pavan Bhattiprolu wrote: > >> Can Anyone provide solution or how to achieve this task. > > > > Install CentOS 7 in a virtual machine. Anything else will only > > and in tears. On Tue, 2014-09-02 at 21:48 +0530, Jaya Pavan Bhattiprolu wrote: > You mean its not achievable or its a difficult? I didn't see the original question (missed it somehow) but it's pretty straightforward to build software for "other" distributions using modern versions of GCC... depending on how many dependencies the software has. For basic system library requirements for a Red Hat system, for example, you just need to get a copy of the base and "devel" RPMs for each of those libraries from the release you want to target, unpack them into a separate directory, then add the --sysroot flag to your invocation of GCC pointing at that directory. So for example if you get the glibc, glibc-common, glibc-devel, glibc-headers, libgcc, and kernel-headers packages from RHEL5 then unpack them into a directory like "/home/sysrooots/rhel5" (I use cpio with the --no-absolute-filenames option to unpack the RPM) you'll get stuff like: /home/sysroots/rhel5/usr/include/... /home/sysroots/rhel5/usr/lib/... /home/sysroots/rhel5/lib/... etc. Then run "gcc --sysroot /home/sysroot/rhel5 ..." for both compilation AND linking. Obviously if your software needs more libraries you'll have to add more RPMs, and the farther up the "stack" you go, away from the base system libraries, the more complex and less portable things become.
