wip

.bazelrc

@@ -28,13 +28,13 @@ test  --verbose_explanations --verbose_failures
 build  --compilation_mode opt
 test   --compilation_mode opt
 
-# Build FBGEMM with C17 and C++17
-build:linux --cxxopt=-std=c++17
-build:linux --host_cxxopt=-std=c++17
+# Build FBGEMM with C17 and C++20
+build:linux --cxxopt=-std=c++20
+build:linux --host_cxxopt=-std=c++20
 build:linux --conlyopt=-std=c17
 build:linux --host_conlyopt=-std=c17
-build:macos --cxxopt=-std=c++17
-build:macos --host_cxxopt=-std=c++17
+build:macos --cxxopt=-std=c++20
+build:macos --host_cxxopt=-std=c++20
 build:macos --conlyopt=-std=c17
 build:macos --host_conlyopt=-std=c17
 build:windows --cxxopt=/std:c++17

.github/scripts/fbgemm_build.bash

@@ -90,7 +90,7 @@ build_fbgemm_library () {
   echo "[BUILD] Running the build ..."
   # shellcheck disable=SC2086
   print_exec conda run --no-capture-output ${env_prefix} \
-    make -j VERBOSE=1
+    make -j 1 VERBOSE=1
 
   cd - || return 1
 }

bench/CMakeLists.txt

@@ -6,11 +6,11 @@
 
 cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_VISIBILITY_PRESET hidden)
-set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD 17)
 set(CMAKE_C_EXTENSIONS OFF)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 

fbgemm_gpu/docs/src/fbgemm_gpu-development/BuildInstructions.rst

@@ -222,7 +222,7 @@ The instructions in this section apply to builds for all variants of FBGEMM_GPU.
 C/C++ Compiler (GCC)
 ~~~~~~~~~~~~~~~~~~~~
 
-Install a version of the GCC toolchain **that supports C++17**.  The ``sysroot``
+Install a version of the GCC toolchain **that supports C++20**.  The ``sysroot``
 package will also need to be installed to avoid issues with missing versioned
 symbols with ``GLIBCXX`` when compiling FBGEMM_CPU: