Build: Be a little more conservative in CPU requirements by avoiding AVX and requiring SSE4.2 only on AMD64.

Author: scoder

pyproject.toml

@@ -19,12 +19,12 @@ RANLIB = "gcc-ranlib"
 [[tool.cibuildwheel.overrides]]
 select = "*linux_i686"
 inherit.environment = "append"
-environment.CFLAGS = "-O3 -g1 -pipe -fPIC -march=sandybridge -mtune=generic"
+environment.CFLAGS = "-O3 -g1 -pipe -fPIC -march=core2 -mtune=generic"
 
 [[tool.cibuildwheel.overrides]]
 select = "*linux_x86_64"
 inherit.environment = "append"
-environment.CFLAGS = "-O3 -g1 -pipe -fPIC -march=sandybridge -mtune=generic"
+environment.CFLAGS = "-O3 -g1 -pipe -fPIC -march=core2 -msse4.1 -msse4.2 -mtune=generic"
 
 [[tool.cibuildwheel.overrides]]
 select = "*aarch64"