Hi, We recently noticed that the size of binaries compiled with the newer GCC (4.8.5) as part of Centos 7 OS is much bigger. Further digging revealed that anything compiled on centos 7 machine has a bigger binary size with at least 20-30% increase and sometimes double or more. Eg: I compiled a simple 'hello world' C program on both Centos 6 and Centos 7. Here are their sizes: Centos 6: 6465 bytes Centos 7: 8512 bytes. All our C/C++ based application binary sizes have increased which has caused the size of the ISO to also blow up. Please let us know more details/information on why do we see this increase and how to mitigate the same. The GCC versions in centos6 is 4.4.7 and in centos7 is 4.8.5. Regards, Shagun -- Sent from: http://gcc.1065356.n8.nabble.com/gcc-Help-f629689.html