Why is -march=native not enabled by default by compilers/IDEs?
5 DFómh 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 …
gcc - How is -march different from -mtune? - Stack Overflow
12 DFómh 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 arch>
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 …
riscv cross compiler error: invalid -march= option: `rv64imafdc_zicsr'
25 MFómh 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: …
c++ - What exactly does -march=native do? - Stack Overflow
10 Meith 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. …
What are my available march/mtune options? - Stack Overflow
5 Samh 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 …
"clang compiler does not support -march=armv8.2-a+i8mm" during …
29 Lún 2023 · Internet search for "-march=armv8.2-a+i8mm" turns up nearly nothing helpful. Either build_aar.sh is asking for an arch that doesn't make sense, or I need to plug in a version of …
-march=haswell vs -march=core-avx2 vs -mavx2 - Stack Overflow
27 Iúil 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 -march=haswell/core …
How to see which flags -march=native will activate?
29 Márta 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 …
Specify `--march` in a Spring Boot Native Build - Stack Overflow
16 Lún 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 …
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