gcc - How is -march different from -mtune? - Stack Overflow
Oct 12, 2024 · -march=foo implies -mtune=foo unless you also specify a different -mtune. This is one reason why using -march is better than just enabling options like -mavx without doing …
Why is -march=native not enabled by default by compilers/IDEs?
Oct 5, 2018 · For -O0, whether -march=native or -march=<generic> is the default still specifies the same family, so both are perfectly compatibly with -O0; and whenever another optimization …
riscv cross compiler error: invalid -march= option: `rv64imafdc_zicsr'
Sep 25, 2024 · GNU assembler version 2.38 (x86_64-linux-gnu) using BFD version (GNU Binutils for Ubuntu) 2.38 Assembler messages: Fatal error: invalid -march= option: `rv64imafdc_zicsr' …
How to see which flags -march=native will activate?
Mar 29, 2011 · I'm compiling my C++ app using GCC 4.3. Instead of manually selecting the optimization flags I'm using -march=native, which in theory should add all optimization flags …
compilation - Is gcc's -march=native a convenience option? Is …
Jan 19, 2024 · When using gcc's -march=native option it sets a number of flags/options, but could this be replicated by setting everything manually, or are there things which are set that are not …
c++ - What exactly does -march=native do? - Stack Overflow
Jun 10, 2010 · Gentoo Wiki told me the following: Warning: GCC 4.2 and above support -march=native. -march=native applies additional settings beyond -march, specific to your CPU. …
gcc: Differences between -march=native and -march=<specific …
As I understand it, -march=native will detect the ISA and extensions to use from cpuid (which include model, family and stepping information). -march=xxx will use a baseline set of …
c++ - equivalent of -march=native for msvc - Stack Overflow
Yes, GCC/clang -march=native detects ISA extensions supported by the host system and enables all of them. Is also detects what CPU it actually is, and enables -mtune=icelake-client or …
-march=haswell vs -march=core-avx2 vs -mavx2 - Stack Overflow
Jul 27, 2022 · What are the differences and tradeoffs between -march=haswell, -march=core-avx2, and -mavx2 for compiling avx2 intrinsics? I know that -mavx2 is a flag and …
Specify `--march` in a Spring Boot Native Build - Stack Overflow
Aug 16, 2025 · -march: generate instructions for a specific machine type. Defaults to x86-64-v3 on AMD64 and armv8-a on AArch64. Use -march=compatibility for best compatibility, or …