Adam Carter <[email protected]> [13-08-09 17:27]:
> > I already tried do set new CFLAGS via /etc/portage/env/nolto.conf:
> >
> > beagleboneblack:portage/package.env>cat simh
> > app-emulation/simh no-lto.conf
> >
> > and and an according file in /etc/porttage/package.env:
> >
> > beagleboneblack:portage/package.env>cat simh
> > app-emulation/simh no-lto.conf
> >
> > but this does not have any effect.
> >
>
> What's the contents of no-lto.conf ? Was the missing - a typo?
>
> FWIW - i have a lot of build failures with lto and gcc-4.7.3, but many of
> these work with lto and gcc-4.6.3
Hi Adam,
Here is the contents of both files:
beagleboneblack:portage/package.env>cat simh
app-emulation/simh no-lto.conf
beagleboneblack:portage/env>cat no-lto.conf
CFLAGS="${CFLAGS} -fno-lto -fno-use-linker-plugin"
CXXFLAGS="${CXXFLAGS} -fno-lto -fno-use-linker-plugin"
LDFLAGS="${LDFLAGS} -fno-lto -fno-use-linker-plugin"
The (only) gcc installed on my beaglebone black is:
beagleboneblack:portage/env>gcc-config -l
[1] armv7a-hardfloat-linux-gnueabi-4.6.3 *
The USE-flag configuration of the gcc is:
[I] sys-devel/gcc
Available versions:
(2.95) [M]~*2.95.3-r10^s
(3.1) [M]*3.1.1-r2
(3.2) **3.2.2^s *3.2.3-r4
(3.3) ~*3.3.6-r1^s
(3.4) 3.4.6-r2^s
(4.0) ~*4.0.4^s
(4.1) 4.1.2^s
(4.2) ~4.2.4-r1^s
(4.3) ~4.3.3-r2^s 4.3.4^s ~4.3.5^s 4.3.6-r1^s
(4.4) ~4.4.2^s 4.4.3-r3^s 4.4.4-r2^s 4.4.5^s 4.4.6-r1^s 4.4.7^s
(4.5) ~4.5.1-r1^s ~4.5.2^s 4.5.3-r2^s 4.5.4^s
(4.6) ~4.6.0^s ~4.6.1-r1^s ~4.6.2^s 4.6.3^s ~4.6.4^s
(4.7) ~4.7.0^s ~4.7.1^s ~4.7.2-r1^s ~4.7.3^s
(4.8) [M]**4.8.0^s [M]**4.8.1^s
{{altivec bootstrap boundschecking build cxx d doc fixed-point fortran
gcj go graphite gtk hardened ip28 ip32r10k java libssp lto mudflap multilib
multislot n32 n64 nls nopie nossp nptl objc objc++ objc-gc openmp
regression-test static vanilla}}
Installed versions: 4.6.3(4.6)^s(05:38:07 08/03/13)(cxx fortran
mudflap nls nptl openmp -altivec -doc -fixed-point -gcj -graphite -gtk
-hardened -libssp -lto -multilib -multislot -nopie -nossp -objc -objc++
-objc-gc -regression-test -vanilla)
Homepage: http://gcc.gnu.org/
Description: The GNU Compiler Collection
That is, there is no LTO-support compiled in the gcc (as mentioned in
previous mail). As I think to have understood from searching and
reading the web, LTO on the ARM platform is possible. But I am no
gcc guru and therefore it is really possible that I have misunderstand
what has been written... ;)
Best regards,
mcc
