build: enable compiler optimization by default

waftools/detections/compiler.py

@@ -22,6 +22,9 @@ def __add_generic_flags__(ctx):
                        "-D_LARGEFILE64_SOURCE",
                        "-std=c99", "-Wall"]
 
+    if ctx.is_optimization():
+        ctx.env.CFLAGS += ['-O2']
+
     if ctx.is_debug_build():
         ctx.env.CFLAGS += ['-g']
 

wscript

@@ -35,6 +35,11 @@ build_options = [
         'desc': 'whether to include binary compile time',
         'default': 'enable',
         'func': check_true
+    }, {
+        'name': '--optimize',
+        'desc': 'whether to optimize',
+        'default': 'enable',
+        'func': check_true
     }, {
         'name': '--debug-build',
         'desc': 'whether to compile-in debugging information',
@@ -787,6 +792,10 @@ def options(opt):
         dest    = 'LUA_VER',
         help    = "select Lua package which should be autodetected. Choices: 51 51deb 51fbsd 52 52deb 52fbsd luajit")
 
+@conf
+def is_optimization(ctx):
+    return getattr(ctx.options, 'enable_optimize')
+
 @conf
 def is_debug_build(ctx):
     return getattr(ctx.options, 'enable_debug-build')