Build System between riscv-perf-model and map

[dingiso]

Hi Knute,

After reading the message in mail list, I figure out that the version of map (before the new build system) is what making the build of riscv-perf-model frustrated.

Why not add the map with specific commit as one git submodule in riscv-perf-model repo since they all closely bounded. And we could update its commit when it's ready to use the same build system.

Thanks,
Dingisoul

[klingaard]

I thought about making map a submodule of olympia, but I weighted the pros and cons of doing so. Adding the map repo as a submodule has a “pro" that the version of map coincides with the RISC-V perf model (olympia) it is expected to work with. Frustration level drops a notch. ;) Starting from scratch, all a developer needs to do is: 1. Clone olympia and its submodules 2. Create a conda environment using olympia’s recipe and activate it 3. Build olympia Looking at the “cons” of including map in olympia as a subrepo: - A fully built map is almost 1GB in size * This means that for every clone of olympia one (or a team) has, there is a lot of disk space that can be consumed for the exact same code base * Every time a modeler builds olympia, map is checked to see if its up to date - Olympia’s CMake flow is overly complicated to use map (before the packaging system) * The modeler is required to explicitly include header files, libraries, and library paths that map requires * If map becomes a package (which it just did), olympia cannot build with it anymore If map remains as a separate project to olympia, then the build steps are just increased by 1: 1. Clone olympia and its submodules 2. Create a conda environment using olympia’s recipe and activate it 3. Clone, build, and install map into the conda environment 4. Build olympia However, there might be a happy medium between the two directions: CMake External Projects: https://cmake.org/cmake/help/latest/module/ExternalProject.html <https://cmake.org/cmake/help/latest/module/ExternalProject.html> (thanks Brett Duttro!) I might go that route for olympia and map. Both worlds might be satisfied. :) Thoughts/comments welcomed. Knute