# prepend boiler plate optimization flags that work on all architectures
#
- optimization_flags[:0] = [
- "-O3",
- "-fomit-frame-pointer",
- "-ffast-math",
- "-fstrength-reduce",
- "-pipe"
- ]
+ optimization_flags[:0] = ["-pipe"]
+
+ # don't prepend optimization flags if "-O<something>" is present
+ prepend_opt_flags = True
+ for flag in optimization_flags:
+ if flag.startswith("-O"):
+ prepend_opt_flags = False
+ break
+
+ if prepend_opt_flags:
+ optimization_flags[:0] = [
+ "-O3",
+ "-fomit-frame-pointer",
+ "-ffast-math",
+ "-fstrength-reduce"
+ ]
if opt.debug:
conf.env.append_value('CFLAGS', debug_flags)