Novell LPIC Certificaciones

LPIC-1 

LPI ID: LPI000221344

Certificación Novell NCLA ECR 

Certificación Novell DTCS ECR

Linux es genial!.

Actualizar gcc 4.6.2

Instalando gcc-4.6.2 en mi gentoo amd64 para añadir soporte de optimizaciones para nuevos procesadores en mi caso AMD-FX-4100 Bulldozer (family 14), flags  -march=btver1 -mtune=btver1 

En estos momentos el paquete aparece boqueado por missing keyword. Desmascarar (unmask) como sigue:

# echo "sys-devel/gcc">> /etc/portage/package.unmask

# echo "sys-devel/gcc **>> /etc/portage/package.keywords

De momento he enmascarado las anteriores versiones de gcc:

# vi /etc/package.mask

>sys-devel/gcc-4.5.3-r2

=sys-devel/gcc-4.5.3-r2

=sys-devel/gcc-4.5.3-r1

=sys-devel/gcc-4.4.6-r1

=sys-devel/gcc-4.4.5

=sys-devel/gcc-4.4.4-r2

=sys-devel/gcc-4.3.3-r1

=sys-devel/gcc-4.3.6-r1

=sys-devel/gcc-4.3.4

=sys-devel/gcc-4.1.2

=sys-devel/gcc-3.4.6-r2

Hago un emerge:

# emerge -av gcc

These are the packages that would be merged, in order:

Calculating dependencies... done!

[ebuild NS #] sys-devel/gcc-4.6.2 [4.5.3-r2] USE="cxx fortran gtk mudflap (multilib) nls nptl openmp (-altivec) -bootstrap -build -doc (-fixed-point) -gcj -go -graphite (-hardened) (-libffi) (-libssp) -multislot -nocxx -nopie -nossp -objc -objc++ -objc-gc -test -vanilla" 0 kB

Total: 1 package (1 in new slot), Size of downloads: 0 kB

Would you like to merge these packages? [Yes/No] y

# Modificar la version del compilador:

# gcc-config -l

 [1] x86_64-pc-linux-gnu-4.5.3 *

 [2] x86_64-pc-linux-gnu-4.6.2

# gcc-config 2

# env-update && source /etc/profile

Reconstruir libtool:

# emerge --oneshot libtool

Solo es necesario si se actualiza desde una version anterior a 4.1:

# revdep-rebuild --library libstdc++.so.5 

# gcc-config -l

 [1] x86_64-pc-linux-gnu-4.5.3 

 [2] x86_64-pc-linux-gnu-4.6.2 *

Agregar las flags al fichero make.conf

# vi /etc/make.conf

CFLAGS="-O2 -pipe -fomit-frame-pointer -march=bdver1 -mtune=bdver1 -mcx16 -msahf -maes -mpclmul -mpopcnt -mabm -mlwp -mavx"

CXXFLAGS="${CFLAGS}"

Continuará...

Linux es genial!.