set test lto

Author: jkotan

setup.py

@@ -153,7 +153,8 @@ def add_filters(filters, pkgs, pkgs_data):
 if sys.platform == "win32":
     pass
 else:
-    arguments = ['-std=c++17', '-Wall', '-Wextra', '-fdiagnostics-show-option']
+    # arguments = ['-std=c++17', '-Wall', '-Wextra', '-fdiagnostics-show-option']
+    arguments = ['-std=c++17', '-Wall', '-Wextra', '-fdiagnostics-show-option', '-flto=auto', '-ffat-lto-objects']
     nexus_config.add_compiler_arguments(arguments)
 
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