I used the details provided in this question to set the optimization flag to '-o3'
. However, I have the following issue:
- if I use the upper case as
extra_compile_args=['-O3']
, I get the warning:cl : Command line warning D9002 : ignoring unknown option '-O3'
- if I use the lower case as
extra_compile_args=['-o3']
, I get the warning:cl : Command line warning D9035 : option 'o' has been deprecated and will be removed in a future release
How can I solve this?
CodePudding user response:
The -O3
flag is only supported by gcc and clang. Since you seem to be using the MSVC compiler, you can use the /Ox
flag, see here for more details.