[oe] [PATCH] sane-toolchain-*glibc.inc: Use -O2 on PowerPC

[Khem Raj]

On Wed, Nov 17, 2010 at 6:15 AM, Tom Rini <tom_rini at mentor.com> wrote:
> In FULL_OPTIMIZATION use -O2 on powerpc due to some problems
> with libgcc.a and -Os when using gcc 4.5.x.
>
> Signed-off-by: Tom Rini <tom_rini at mentor.com>


patch is ok. In comment you should also mention gcc 4.4 which has the
same problem.

> ---
>  conf/distro/include/sane-toolchain-eglibc.inc |    3 +++
>  conf/distro/include/sane-toolchain-glibc.inc  |    3 +++
>  2 files changed, 6 insertions(+), 0 deletions(-)
>
> diff --git a/conf/distro/include/sane-toolchain-eglibc.inc b/conf/distro/include/sane-toolchain-eglibc.inc
> index c077ed1..77f2e3b 100644
> --- a/conf/distro/include/sane-toolchain-eglibc.inc
> +++ b/conf/distro/include/sane-toolchain-eglibc.inc
> @@ -9,6 +9,9 @@ FULL_OPTIMIZATION_pn-eglibc_arm = "-fexpensive-optimizations -fomit-frame-pointe
>  FULL_OPTIMIZATION_pn-perl = "-fexpensive-optimizations -fomit-frame-pointer -frename-registers -O1"
>  FULL_OPTIMIZATION_sparc = "-fexpensive-optimizations -fomit-frame-pointer -frename-registers -O2"
>
> +# gcc 4.5 has a problem with 'leakage' into libgcc.a with -Os
> +FULL_OPTIMIZATION_powerpc = "-fexpensive-optimizations -fomit-frame-pointer -frename-registers -O2"
> +
>  # JaMa: I promise to report bug upstream, but as it can take a while to fix it, I'll switch to -O2 here
>  # Tested with gcc-4.4.2 and gcc-4.4.3 on armv4t and armv5te and it fails with -Os, with gcc-4.3.3 it works OK with -Os
>  # Here is testcase, but you have to rebuild whole libqtxml to test it
> diff --git a/conf/distro/include/sane-toolchain-glibc.inc b/conf/distro/include/sane-toolchain-glibc.inc
> index e806de6..5802ef1 100644
> --- a/conf/distro/include/sane-toolchain-glibc.inc
> +++ b/conf/distro/include/sane-toolchain-glibc.inc
> @@ -13,6 +13,9 @@ FULL_OPTIMIZATION_pn-perl = "-fexpensive-optimizations -fomit-frame-pointer -fre
>  FULL_OPTIMIZATION_pn-glibc = "-fexpensive-optimizations -fomit-frame-pointer -O2"
>  FULL_OPTIMIZATION_sparc = "-fexpensive-optimizations -fomit-frame-pointer -frename-registers -O2"
>
> +# gcc 4.5 has a problem with 'leakage' into libgcc.a with -Os
> +FULL_OPTIMIZATION_powerpc = "-fexpensive-optimizations -fomit-frame-pointer -frename-registers -O2"
> +
>  BUILD_OPTIMIZATION_pn-perl = "-O1"
>  BUILD_OPTIMIZATION_pn-glibc = "-O2"
>  BUILD_OPTIMIZATION_sparc = "-O2"
> --
> 1.7.0.4
>
>
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