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 …
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 …
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 …
What are my available march/mtune options? - Stack Overflow
Nov 5, 2018 · Is there a way to get gcc to output the available -march=arch options? I'm getting build errors (tried -march=x86_64) and I don't know what my options are. The compiler I'm …
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' …
unrecognized command-line option '-arch'; did you mean ' …
unrecognized command-line option '-arch'; did you mean '-march='? Asked 4 years, 5 months ago Modified 1 year, 6 months ago Viewed 3k times
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. …
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 …
-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 …
Why is cmake removing my `-march` switch? - Stack Overflow
Oct 22, 2024 · The generated flags.make in the cmake build directory DOES add my -march=armv8-a+sve switch to the C_FLAGS variable. I believe that cmake is compiling my file …