diff --git a/Source/Tools/Flax.Build/Platforms/Apple/AppleToolchain.cs b/Source/Tools/Flax.Build/Platforms/Apple/AppleToolchain.cs
index ea3ab71e6..fa6e896f3 100644
--- a/Source/Tools/Flax.Build/Platforms/Apple/AppleToolchain.cs
+++ b/Source/Tools/Flax.Build/Platforms/Apple/AppleToolchain.cs
@@ -150,23 +150,25 @@ namespace Flax.Build.Platforms
                 if (compileEnvironment.TreatWarningsAsErrors)
                     commonArgs.Add("-Wall -Werror");
 
-                // TODO: compileEnvironment.IntrinsicFunctions
-                // TODO: compileEnvironment.FunctionLevelLinking
-                // TODO: compileEnvironment.FavorSizeOrSpeed
-                // TODO: compileEnvironment.RuntimeChecks
-                // TODO: compileEnvironment.StringPooling
-                // TODO: compileEnvironment.BufferSecurityCheck
-
                 if (compileEnvironment.DebugInformation)
                     commonArgs.Add("-gdwarf-2");
 
                 commonArgs.Add("-pthread");
 
+                if (compileEnvironment.FavorSizeOrSpeed == FavorSizeOrSpeed.FastCode)
+                    commonArgs.Add("-Ofast");
+                else if (compileEnvironment.FavorSizeOrSpeed == FavorSizeOrSpeed.SmallCode)
+                    commonArgs.Add("-Os");
                 if (compileEnvironment.Optimization)
                     commonArgs.Add("-O3");
                 else
                     commonArgs.Add("-O0");
 
+                if (compileEnvironment.BufferSecurityCheck)
+                    commonArgs.Add("-fstack-protector");
+                else
+                    commonArgs.Add("fno-stack-protector");
+
                 if (!compileEnvironment.Inlining)
                 {
                     commonArgs.Add("-fno-inline-functions");
diff --git a/Source/Tools/Flax.Build/Platforms/Unix/UnixToolchain.cs b/Source/Tools/Flax.Build/Platforms/Unix/UnixToolchain.cs
index fc409858a..607450cb1 100644
--- a/Source/Tools/Flax.Build/Platforms/Unix/UnixToolchain.cs
+++ b/Source/Tools/Flax.Build/Platforms/Unix/UnixToolchain.cs
@@ -363,28 +363,24 @@ namespace Flax.Build.Platforms
                 if (compileEnvironment.TreatWarningsAsErrors)
                     commonArgs.Add("-Wall -Werror");
 
-                // TODO: compileEnvironment.IntrinsicFunctions
-                // TODO: compileEnvironment.FunctionLevelLinking
-                // TODO: compileEnvironment.FavorSizeOrSpeed
-                // TODO: compileEnvironment.RuntimeChecks
-                // TODO: compileEnvironment.StringPooling
-                // TODO: compileEnvironment.BufferSecurityCheck
-
                 if (compileEnvironment.DebugInformation)
-                {
                     commonArgs.Add("-glldb");
-                }
 
                 commonArgs.Add("-pthread");
 
+                if (compileEnvironment.FavorSizeOrSpeed == FavorSizeOrSpeed.FastCode)
+                    commonArgs.Add("-Ofast");
+                else if (compileEnvironment.FavorSizeOrSpeed == FavorSizeOrSpeed.SmallCode)
+                    commonArgs.Add("-Os");
                 if (compileEnvironment.Optimization)
-                {
                     commonArgs.Add("-O2");
-                }
                 else
-                {
                     commonArgs.Add("-O0");
-                }
+
+                if (compileEnvironment.BufferSecurityCheck)
+                    commonArgs.Add("-fstack-protector");
+                else
+                    commonArgs.Add("fno-stack-protector");
 
                 if (!compileEnvironment.Inlining)
                 {
@@ -393,13 +389,9 @@ namespace Flax.Build.Platforms
                 }
 
                 if (compileEnvironment.EnableExceptions)
-                {
                     commonArgs.Add("-fexceptions");
-                }
                 else
-                {
                     commonArgs.Add("-fno-exceptions");
-                }
             }
 
             // Add preprocessor definitions