python/src/moocore/_ffi_build.py: Add -march= to link flags.

Author: MLopez-Ibanez

python/src/moocore/_ffi_build.py

@@ -89,13 +89,17 @@ def _get_target_platform():
     extra_compile_args.extend(MSVC_CFLAGS)
     extra_link_args.extend(MSVC_LDFLAGS)
     if is_x86_64:
-        extra_compile_args.append("/arch:AVX")
+        extra_args = ["/arch:AVX"]
+        extra_compile_args.extend(extra_args)
+        extra_link_args.extend(extra_args)
 else:
     extra_compile_args.extend(GCC_CFLAGS)
     extra_link_args.extend(GCC_CFLAGS)
     # Compile for sufficiently old x86-64 architecture.
     if is_x86_64:
-        extra_compile_args.append("-march=x86-64-v2")
+        extra_args = ["-march=x86-64-v2"]
+        extra_compile_args.extend(extra_args)
+        extra_link_args.extend(extra_args)
 
 cflags = os.environ.get("CFLAGS", "")
 if cflags != "":