On 31-01-2025 17:45, Udo Grabowski (IMKASF) wrote:
On 31-01-2025 17:43, Enrico Weigelt, metux IT consult wrote:Hi folks, I'm wondering what the /lib/libc.so.1 mount is actually for. Are there different libc versions that might be mounted ? Where and how exactly is the decision made ? Who mounts it ?It depends on the hardware capabilities of the processor, for Intel it's usually libc_hwcap1.so.1, for AMD I have libc_hwcap2.so.1, and there's a libc_hwcap3.so.1 (ARM?) too./lib/libc.so.1 on /usr/lib/libc/libc_hwcap2.so.1 read/write/setuid/ devices/dev=4c50002 on Mon Dec 16 12:29:34 2024
Here are the specific capabilities used in the different versions (3 is not ARM), see them with 'file': /usr/lib/libc/libc_hwcap3.so.1: [SSE MMX CMOV FPU] /usr/lib/libc/libc_hwcap2.so.1: [SSE2 SSE MMX CMOV AMD_SYSC FPU] /usr/lib/libc/libc_hwcap1.so.1: [SSE MMX CMOV SEP FPU] -- Dr.Udo Grabowski Inst.of Meteorology & Climate Research IMKASF-SAT https://www.imk-asf.kit.edu/english/sat.php KIT - Karlsruhe Institute of Technology https://www.kit.edu Postfach 3640,76021 Karlsruhe,Germany T:(+49)721 608-26026 F:-926026
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