[rtems commit] or1k/generic_or1k: Add per-section compilation and linking support

[Gedare Bloom]

There is a specific way you should turn off the option. Check some
other .cfg files or maybe Joel will provide the template.

On Mon, Apr 4, 2016 at 1:00 AM, Hesham Almatary
<heshamelmatary at gmail.com> wrote:
> Should I "undo" this patch to get it working again?
>
> On Sat, Apr 2, 2016 at 11:57 AM Gedare Bloom <gedare at rtems.org> wrote:
>>
>> ---------- Forwarded message ----------
>> From: Hesham Almatary <heshamelmatary at gmail.com>
>> Date: Fri, Apr 1, 2016 at 8:45 PM
>> Subject: Re: [rtems commit] or1k/generic_or1k: Add per-section
>> compilation and linking support
>> To: vc at rtems.org
>> Cc: Stefan Wallentowitz <stefan at wallentowitz.de>
>>
>>
>> hello and ticker fail to run with this commit.
>>
>> On Sat, Mar 12, 2016 at 7:14 AM Joel Sherrill <joel at rtems.org> wrote:
>> >
>> > Module:    rtems
>> > Branch:    master
>> > Commit:    e1768fdd950fb24004183cdfdbef0bcd1a07908c
>> > Changeset:
>> > http://git.rtems.org/rtems/commit/?id=e1768fdd950fb24004183cdfdbef0bcd1a07908c
>> >
>> > Author:    Joel Sherrill <joel at rtems.org>
>> > Date:      Thu Mar 10 16:28:12 2016 -0600
>> >
>> > or1k/generic_or1k: Add per-section compilation and linking support
>> >
>> > updates #2577.
>> >
>> > For the generic_or1k BSP variant without this option sample
>> > executables sizes were as follows:
>> >
>> >    text    data     bss           dec             hex   filename
>> >  255044    1780 33297600        33554424        1fffff8 ticker.exe
>> >  188484    1496 33364448        33554428        1fffffc minimum.exe
>> >  829728   77432 32647264        33554424        1fffff8 cxx_iostream.exe
>> > 1110588    6112 32437728        33554428        1fffffc fileio.exe
>> >  881676   14420 32658304        33554400        1ffffe0 pppd.exe
>> >  428200    2556 33123648        33554404        1ffffe4 capture.exe
>> >  274012    1868 33278528        33554408        1ffffe8 nsecs.exe
>> >  398084    2184 33154144        33554412        1ffffec paranoia.exe
>> >  387348    7420 33159648        33554416        1fffff0 cdtest.exe
>> >  247752    1780 33304896        33554428        1fffffc base_sp.exe
>> >  253888    1808 33298720        33554416        1fffff0 unlimited.exe
>> >  261792    1752 33290880        33554424        1fffff8 hello.exe
>> >  569612    6792 32978016        33554420        1fffff4 loopback.exe
>> >
>> > For the generic_or1k BSP variant with this option sample executables
>> > sizes were as follows:
>> >
>> >    text    data     bss           dec             hex   filename
>> >  229804    1760 33314592        33546156        1ffdfac ticker.exe
>> >  118744    1424 33425984        33546152        1ffdfa8 minimum.exe
>> >  607344   29188 32909632        33546164        1ffdfb4 cxx_iostream.exe
>> > 1064124    6088 32475936        33546148        1ffdfa4 fileio.exe
>> >  801832   14156 32730176        33546164        1ffdfb4 pppd.exe
>> >  392908    2508 33150752        33546168        1ffdfb8 capture.exe
>> >  249932    1848 33294368        33546148        1ffdfa4 nsecs.exe
>> >  372320    2164 33171680        33546164        1ffdfb4 paranoia.exe
>> >  361148    6980 33178016        33546144        1ffdfa0 cdtest.exe
>> >  222004    1760 33322400        33546164        1ffdfb4 base_sp.exe
>> >  222812    1772 33321568        33546152        1ffdfa8 unlimited.exe
>> >  229764    1704 33314688        33546156        1ffdfac hello.exe
>> >  515572    6576 33024000        33546148        1ffdfa4 loopback.exe
>> >
>> > ---
>> >
>> >  c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg | 3 +++
>> >  1 file changed, 3 insertions(+)
>> >
>> > diff --git
>> > a/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg
>> > b/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg
>> > index fff00ae..9a00643 100644
>> > --- a/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg
>> > +++ b/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg
>> > @@ -5,3 +5,6 @@ RTEMS_CPU = or1k
>> >  CPU_CFLAGS = -O2
>> >
>> >  CFLAGS_OPTIMIZE_V ?= -O0 -g
>> > +CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
>> > +
>> > +LDFLAGS = -Wl,--gc-sections
>> >
>> > _______________________________________________
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>> > vc at rtems.org
>> > http://lists.rtems.org/mailman/listinfo/vc
>>
>>
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