Build xtensor-blas for emscripten-4x#3479

DerThorsten merged 1 commit intoemscripten-4xemscripten-forge/recipes:emscripten-4xfrom

initial-build-xtensor-blas_for_emscripten-4xemscripten-forge/recipes:initial-build-xtensor-blas_for_emscripten-4xCopy head branch name to clipboard