[yocto] Unable to get serial console login prompt - PowerPC 440 Virtex 5 processor

[Khem Raj]

On Sat, Aug 18, 2012 at 11:36 PM, Elvis Dowson <elvis.dowson at gmail.com> wrote:
> Hi Khem,
>                   What should I do to enable multilib in gcc-4.7?
>
> I think at the moment, in gcc-configure-common.inc, it is disabled.
>
> If I were to re-enable it as follows, based on what I've diff'd from the
> Denx ELDK repo, what how does the GCCMULTILIB variable evaluate?

just for tests. append --enable-multilib to EXTRA_OECONF in
gcc-cross_4.7.bb something like EXTRA_OECONF_append  = " xxx "

>
> -GCCMULTILIB = "--disable-multilib"
> +GCCMULTILIB = '${@base_contains("MULTILIB_ARCH_LIST", "${TARGET_ARCH}",
> "--enable-multilib", "--disable-multilib",d)}'
>
> I think multilib has to be enabled, no?
>
> In file gcc/config/rs6000/t-ppcos.c
>
> # Multilibs for a powerpc hosted ELF target (linux, SVR4)
>
> MULTILIB_OPTIONS = msoft-float
> MULTILIB_DIRNAMES = nof
> MULTILIB_EXTRA_OPTS = fPIC mstrict-align
> MULTILIB_EXCEPTIONS =
>
> MULTILIB_MATCHES = ${MULTILIB_MATCHES_FLOAT}
>
>
> Here is the full patch, which I am assuming enables multilib, and get libgcc
> to generate the nof libraries to the target:
>
> diff --git a/meta/recipes-devtools/gcc/gcc-configure-common.inc
> b/meta/recipes-devtools/gcc/gcc-configure-common.inc
> index 908ad3e..a3fa294 100644
> --- a/meta/recipes-devtools/gcc/gcc-configure-common.inc
> +++ b/meta/recipes-devtools/gcc/gcc-configure-common.inc
> @@ -25,7 +25,7 @@ EXTRA_OECONF_PATHS ?= ""
>  EXTRA_OECONF_INITIAL ?= ""
>  EXTRA_OECONF_INTERMEDIATE ?= ""
>
> -GCCMULTILIB = "--disable-multilib"
> +GCCMULTILIB = '${@base_contains("MULTILIB_ARCH_LIST", "${TARGET_ARCH}",
> "--enable-multilib", "--disable-multilib",d)}'
>
>  EXTRA_OECONF = "${@['--enable-clocale=generic', ''][d.getVar('USE_NLS',
> True) != 'no']} \
>                  --with-gnu-ld \
> diff --git a/meta/recipes-devtools/gcc/libgcc_4.7.bb
> b/meta/recipes-devtools/gcc/libgcc_4.7.bb
> index c796253..aac81f6 100644
> --- a/meta/recipes-devtools/gcc/libgcc_4.7.bb
> +++ b/meta/recipes-devtools/gcc/libgcc_4.7.bb
> @@ -18,7 +18,9 @@ FILES_${PN} = "${base_libdir}/libgcc*.so.*"
>  FILES_${PN}-dev = " \
>    ${base_libdir}/libgcc*.so \
>    ${libdir}/${TARGET_SYS}/${BINV}/*crt* \
> -  ${libdir}/${TARGET_SYS}/${BINV}/libgcc*"
> +  ${libdir}/${TARGET_SYS}/${BINV}/libgcc* \
> +  ${libdir}/${TARGET_SYS}/${BINV}/nof/crt* \
> +  ${libdir}/${TARGET_SYS}/${BINV}/nof/libgcc*"
>  FILES_libgcov${PKGSUFFIX}-dev = " \
>    ${libdir}/${TARGET_SYS}/${BINV}/libgcov.a \
>    "
>
> Best regards,
>
> Elvis Dowson