Hi, please take a while to hear me out:
I am currently running some sort of a Linux From Scratch system layered over Debian 10, in which I mean Debian 10 forms the base operating system, but the kernel is my own and Mesa, libdrm and libglvnd, and most of the applications I use, with their dependencies are built from scratch in $HOME/Runtime. The goal is to isolate the base system from 'my stuff' in a way Windows and macOS does to a certain extent.
Naturally, i needed a very powerful computer to do this for all my applications: the hardware used is a Threadripper 2990wx with 128GB of memory.
I also have a 4 year old laptop that runs on Debian 10 as well; it's a Skylake i7-6500U with only 16GB of memory Now, I obviously do not have the time, patience or desire to recompile my entire so-called application environment on a laptop, so I simply copied $HOME/Runtime from my desktop over to my laptop's $HOME, making sure that i set up the laptop with the same username so that my applications don't complain. It worked.
I'm now getting two low-cost laptops from China powered by Gemini Lake (N4100) and Apollo Lake (Atom x7-E3950) processors to install Debian 10 on since the Skylake is starting to fall apart with broken shells and hinges. My concern here is whether gcc, g++ or clang used any instructions specific to Threadripper (like AVX, etc) when it built my kernel, drivers and applications, because I'm going to be mighty pissed if my copied $HOME/Runtime fails to run in Gemini Lake or Apollo Lake because of that.
I ran gcc -xc -v - and gcc -xc++ -v - and saw the following default flags:
Similarly for my $HOME/Runtime/bin/clang -xc -v - and $HOME/Runtime/bin/clang -xc++ -v - , where i saw the following:
I do not pass any additional CFLAGS or CXXFLAGS to my builds beyond -Wl to make the build link to my own libraries instead of Debian's, and -fPIC. Is this an assurance that my copied $HOME/Runtime will work on any x64 processor on Debian 10, as long as I make sure that they all have the same $HOME ?
I am currently running some sort of a Linux From Scratch system layered over Debian 10, in which I mean Debian 10 forms the base operating system, but the kernel is my own and Mesa, libdrm and libglvnd, and most of the applications I use, with their dependencies are built from scratch in $HOME/Runtime. The goal is to isolate the base system from 'my stuff' in a way Windows and macOS does to a certain extent.
Naturally, i needed a very powerful computer to do this for all my applications: the hardware used is a Threadripper 2990wx with 128GB of memory.
I also have a 4 year old laptop that runs on Debian 10 as well; it's a Skylake i7-6500U with only 16GB of memory Now, I obviously do not have the time, patience or desire to recompile my entire so-called application environment on a laptop, so I simply copied $HOME/Runtime from my desktop over to my laptop's $HOME, making sure that i set up the laptop with the same username so that my applications don't complain. It worked.
I'm now getting two low-cost laptops from China powered by Gemini Lake (N4100) and Apollo Lake (Atom x7-E3950) processors to install Debian 10 on since the Skylake is starting to fall apart with broken shells and hinges. My concern here is whether gcc, g++ or clang used any instructions specific to Threadripper (like AVX, etc) when it built my kernel, drivers and applications, because I'm going to be mighty pissed if my copied $HOME/Runtime fails to run in Gemini Lake or Apollo Lake because of that.
I ran gcc -xc -v - and gcc -xc++ -v - and saw the following default flags:
Code:
-quiet -v -D_GNU_SOURCE - -quiet -dumpbase - -mtune=generic -march=x86-64 -auxbaseSimilarly for my $HOME/Runtime/bin/clang -xc -v - and $HOME/Runtime/bin/clang -xc++ -v - , where i saw the following:
Code:
-target-cpu x86-64
default target x86_64-unknown-linux-gnuI do not pass any additional CFLAGS or CXXFLAGS to my builds beyond -Wl to make the build link to my own libraries instead of Debian's, and -fPIC. Is this an assurance that my copied $HOME/Runtime will work on any x64 processor on Debian 10, as long as I make sure that they all have the same $HOME ?
