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On 07/11/2016 04:51 PM, J. García wrote: |
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> El lun, 11-07-2016 a las 16:27 -0400, waltdnes@××××××××.org escribió: |
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>> I put it into CFLAGS/CCFLAGS years ago, and left it there. During |
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>> a |
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>> discussion on the Pale Moon forum about build options, the opinion |
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>> seems |
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>> to be that "-fomit-frame-pointer" is now the default. Is that |
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>> correct? |
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>> I'd like to simplify my CFLAGS/CCFLAGS both in Gentoo and the Pale |
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>> Moon |
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>> build process. |
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>> |
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> I think it is, at least here it is a default, you can find out by |
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> running: |
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> gcc -c -Q --help=optimizers |
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> |
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> It gets activated with -O, and -O2 is the default in Gentoo, so it |
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> should be. |
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|
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No. At least for me it is -O0. I tested by compiling a small program with different |
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options and diffing the binaries. You can get a definitive answer for any gcc option |
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defaults like that. As long as your test program is complex enough to use those features. |
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You can also diff the output of the -f and -fno flags and if they don't differ then |
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either the test program is not complex enough or the feature has not effect on your arch |
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or platform. |
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|
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> From the gcc manual: |
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> "-O also turns on -fomit-frame-pointer on machines where doing so does |
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> not interfere with debugging." |
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> |
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