Jean-Marc Lasgouttes wrote:
>>>>>> "Angus" == Angus Leeming <[EMAIL PROTECTED]> writes:
>
> Angus> I could write a little script
>
> Angus> find build/src -name '*.o' | while read file; do objcopy
> Angus> --set-section-flags .debug_str=contents,debug $file done
>
> Angus> and report back on subsequent link times/code size. Would you
> Angus> be interested or should I just drop it?
>
> This looks like a good idea...
All object files up to date, compiled with CXXFLAGS='-g -O -W -Wall'.
No executables.
$ time make
real 4m20.096s
user 3m29.100s
sys 0m6.730s
$ ls -l lyx-xforms lyx-qt
-rwxrwxr-x 1 angus angus 99660753 Oct 10 11:02 lyx-qt
-rwxrwxr-x 1 angus angus 77899488 Oct 10 11:00 lyx-xforms
$ size lyx-xforms lyx-qt
text data bss dec hex filename
3729706 399140 48884 4177730 3fbf42 lyx-xforms
3882307 467216 23348 4372871 42b987 lyx-qt
$ du -ks .
707540 .
Run the script below, named run_objdump.sh:
$ time find . -name '*.o' | xargs run_objdump.sh
real 0m17.685s
user 0m1.870s
sys 0m3.840s
Now regenerate the executables
$ time make
real 3m5.312s
user 2m12.780s
sys 0m5.710s
$ ls -l lyx-xforms lyx-qt
-rwxrwxr-x 1 angus angus 115340881 Oct 10 11:11 lyx-qt
-rwxrwxr-x 1 angus angus 93581708 Oct 10 11:09 lyx-xforms
$ size lyx-xforms lyx-qt
text data bss dec hex filename
3729706 399140 48884 4177730 3fbf42 lyx-xforms
3882307 467216 23348 4372871 42b987 lyx-qt
So, it knocks 1m20 of the link times for the two executables at the
expense of 20% greater disk usage. size stats are unchanged.
#! /bin/sh
test $# -gt 0 || exit
while (true); do
objcopy --set-section-flags .debug_str=contents,debug $1
shift
test $# -eq 0 && break;
done
--
Angus
