1 files changed, 57 insertions, 0 deletions
diff --git a/tools/targets.py b/tools/targets.py
new file mode 100644
index 0000000..f13979d
--- /dev/null
+++ b/tools/targets.py
@@ -0,0 +1,57 @@
+import os
+import sys
+from SCons.Variables import *
+
+
+def options(opts):
+    opts.Add(
+        EnumVariable(
+            "optimize",
+            "The desired optimization flags",
+            "auto",
+            ("auto", "none", "debug", "speed", "size", "0", "1", "2", "3"),
+        )
+    )
+    opts.Add(BoolVariable("debug_symbols", "Add debugging symbols to release builds", False))
+
+
+def exists(env):
+    return True
+
+
+def generate(env):
+    if env["optimize"] == "auto":
+        env["optimize"] = "speed" if env["target"] == "release" else "debug"
+    env["debug_symbols"] = env["debug_symbols"] or env["target"] == "debug"
+
+    if "is_msvc" in env and env["is_msvc"]:
+        if env["debug_symbols"]:
+            env.Append(CCFLAGS=["/Z7", "/D_DEBUG"])
+            env.Append(LINKFLAGS=["/DEBUG:FULL"])
+        else:
+            env.Append(CCFLAGS=["/Z7", "/DNDEBUG"])
+
+        if env["optimize"] == "speed":
+            env.Append(CCFLAGS=["/O2"])
+        elif env["optimize"] == "size":
+            env.Append(CCFLAGS=["/Os"])
+        elif env["optimize"] == "debug":
+            env.Append(CCFLAGS=["/Od"])
+        elif env["optimize"] == "none":
+            env.Append(CCFLAGS=["/Od"])
+        else:
+            env.Append(CCFLAGS=["/O%s" % env["optimize"]])
+    else:
+        if env["debug_symbols"]:
+            env.Append(CCFLAGS=["-g"])
+
+        if env["optimize"] == "speed":
+            env.Append(CCFLAGS=["-O3"])
+        elif env["optimize"] == "size":
+            env.Append(CCFLAGS=["-Os"])
+        elif env["optimize"] == "debug":
+            env.Append(CCFLAGS=["-Og"])
+        elif env["optimize"] == "none":
+            env.Append(CCFLAGS=["-O0"])
+        else:
+            env.Append(CCFLAGS=["-O%s" % env["optimize"]])