On 19 September 2017 at 10:08, Mason wrote: > On 19/09/2017 06:07, shagun wrote: > >> 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. > > Please note that 4.8 was released in 2013 and is no longer supported > upstream, as far as I understand. Correct. >> 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. > > Why is that a problem? Do you see a performance regression? > > If the increase comes from the text segment, sometimes bigger code > runs faster (think unrolling loops). If the increase comes from > debug segments, does it matter at all? (You can strip unnecessary > information from the binary.) Yes, in the absence of any useful information, my guess is the increase is due to improved debug info in the newer GCC.
