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Re: GCC compilation options [message #24153 is a reply to message #24148]

Tue, 29 December 2009 17:36

mirek is currently offline

mirek
Messages: 13980
Registered: November 2005

Ultimate Member

Zbych wrote on Tue, 29 December 2009 05:46

Hi,

I've noticed that u++ doesn't force gcc to remove unused functions nor data, so binaries are usually bigger (comparing to MS compiler). So, my proposition is to add:
1. -ffunction-sections and -fdata-sections to compilation options for gcc
2. -Wl,--gc-sections to linker options

I know that "-ffunction-sections" is already used, but without --gc-sections it is useless.

We have experimented with it way back (5 years ago). At least in Linux and BSD, it did not seem to result in any difference in binary size.

Maybe things evolved since then. Could you try please? Ideal test candidate is theide in release mode.

You can pass linker options via package organizer for the purpose of the experiment...

Mirek

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[Message index]

		GCC compilation options By: Zbych on Tue, 29 December 2009 11:46
		Re: GCC compilation options By: mirek on Tue, 29 December 2009 17:36
		Re: GCC compilation options By: Zbych on Tue, 29 December 2009 21:50
		Re: GCC compilation options By: mirek on Wed, 30 December 2009 18:53
		Re: GCC compilation options By: mirek on Wed, 30 December 2009 21:00
		Re: GCC compilation options By: gxl117 on Fri, 01 January 2010 07:00
		Re: GCC compilation options By: mirek on Fri, 01 January 2010 09:30
		Re: GCC compilation options By: gxl117 on Fri, 01 January 2010 09:51
		Re: GCC compilation options By: mirek on Fri, 01 January 2010 20:07
		Re: GCC compilation options By: Zbych on Tue, 05 January 2010 11:26
		Re: GCC compilation options By: Novo on Thu, 07 January 2010 03:01

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