Changing Release compiler options

[wgs777]

I would like to change the Release compiler options for the 4 external packages to gcc -O3 -march=native.

I've spent some time reviewing the CMake files. It appears to only use this for releases:

CMAKE_C_FLAGS_RELWITHDEBINFO:STRING=-O2 -g -DNDEBUG

Is there a clean way (at the highest level) to set all compile options for all packages to: gcc -O3 -march=native?

Thanks

[wrljet]

I will address this one.

Bill

[wgs777]

Hi - If possible, please provide an update on this one. Thanks.

[wrljet]

Been involved in other things and didn't want to switch gears and then loose my train of thought.
So nothing has been done on this issue, yet;.

Bill

[wgs777]

Thanks for your volunteer time and effort on this. It's greatly appreciated. I wanted to have my final Hercules build with the gists libraries compiled with gcc -O3 -march=native and was hoping to have that functionality soon. If you are tied up, would it be possible to assign the "issue" to another person? Thanks, Bill

…

On Tue, Jun 28, 2022 at 5:17 PM Bill Lewis ***@***.***> wrote: Been involved in other things and didn't want to switch gears and then loose my train of thought. So nothing has been done on this issue, yet;. Bill — Reply to this email directly, view it on GitHub <#5 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AYRYNQXVOKQD5EWYEZJF5QTVRNTXPANCNFSM5XJIP3YQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[wrljet]

Bill,

If you care to try my Hercules-Helper project, used to make building SDL-Hercules easier on many different systems, it now supports passing options to CMake for the external packages build.

Uncomment the last line in example hercules-helper.conf. This will use -O3 compiler option.

Just FYI... I have not changed anything in the SDL-Hercules for this (yet). Hercules-Helper does not use the
gists build scheme for the external packages. I call CMake directly for each of the extpkgs, which makes this easier.

Let me know if it doesn't work for you.

I will be enhancing the gists approach as well, but that is more involved and will take a while.

Bill

[wgs777]

Hi Bill,

Thank you again for your time on this, and sorry for my delay in responding. The Hercules Helper is an interesting approach and I can still use that if needed.

I have one question on the original gists project (without using Hercules Helper):

In the original gists project's make files, if I just want to re-use the original compile variable names, with just changing -O2 to -O3 -march=native in the make files(s), would you know which make file or config file should I make that change to, so that the -O3 -march=native propagates down to all the builds under gists project?

[wrljet]

I have one question on the original gists project (without using Hercules Helper):

In the original gists project's make files, if I just want to re-use the original compile variable names, with just changing -O2 to -O3 -march=native in the make files(s), would you know which make file or config file should I make that change to, so that the -O3 -march=native propagates down to all the builds under gists project?

As-is, as far as I know, no, that is not possible just by setting one thing at a high level.

You could edit the four {crypto,decNumber,SoftFloat,telnet}/build scripts after you clone the repos and
adjust the compiler switches where CMake is called in do_configure(). Adding something along the lines
of -D CMAKE_C_FLAGS_RELWITHDEBINFO=\"-O3 -march=native -g\" to the command line.

Keep in mind any time you change those things, you'll probably need to destroy the existing CMakeCache.txt
in the build directories. I'm not sure of those command line options will override the cached values or not.

Bill

[wgs777]

Hi Bill, Thank you for your response. I will try it out. Bill

[wgs777]

Thank you for your time on this. Will take a look and get back to you in the next few days.