Hey,
I virtually always used -Os the last decade, …
Hm,
René
On Nov 13, 2015, at 0:20, Toan Pham <[email protected]> wrote:
>
> Rene,
>
> I filed a bug report earlier today but later found out that it was the
> command wrapper of t2sde tricking glib build system from detecting and
> stripping out the optimization flags. I later read the auto configure script
> from glib and found that it was in fact, stripping out all optimization (see
> below). The reason why you do not see the problem probably because your
> target config is not set to use optimization, ie. SDECFGSET_OPT=size. If
> your build target wrapper has gcc remaps to something like "gcc -Os", it will
> break glib! I think to be safe, either add the patch or do not use cmd
> wrapper to pass any kind of compiler flags.
>
>
> bug report reference: https://bugzilla.gnome.org/show_bug.cgi?id=758028
>
>
>
> Snipplet from glib configure.ac script: it removes all "-O?" flags:
>
> dnl Remove all optimization flags from CFLAGS
> changequote({,})
> CFLAGS=`echo "$CFLAGS" | $SED -e 's/-O[0-9]*//g'`
> changequote([,])
>
> dnl Add the special gcc flags
> CFLAGS="$CFLAGS -O0 -fprofile-arcs -ftest-coverage"
> LDFLAGS="$LDFLAGS -lgcov"
>
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