buildd log scanner tag E-march-native
![[history graph of absolute numbers]](../graphs/E-march-native_absolute.png)
![[history graph of percentage]](../graphs/E-march-native_percent.png)
description
The build log contains the term-march=native
This usually means the compiler is instructed to only making sure the generated code works on the machine it is compiled on, allowing the use of instructions not available on other machines.
For example if an i386 buildd is running on amd64 hardware, the generated binaries might fail on 32-bit only machines.
If code does not fail now, it might fail after future binNMUs, NMUs or security uploads if another buildd is used or if the compiler become better in finding a way to utilize newer instructions.