[gentoo-alt] RAP on ppc64 (SLES11.1)

[François Bissey]

Hi all,

I now have a working RAP environment on ppc64.
So here is a bit of recipe to achieve this:
* There is no current ppc64 profile, so one has to be
created during stage 1.
I copied the ppc64 from prefix/linux to prefix/linux-standalone.
Replace make.default inside prefix/linux-standalone/ppc64
by the one in prefix/linux-standalone/amd64.
Copy the "legacy" folder from  prefix/linux-standalone/amd64
to prefix/linux-standalone/ppc64.

* Make sure help2man is installed on the host system (for bison).

* I would like the following patch to be considered
for the bootstrap script
--- bootstrap-rap.sh.orig       2017-01-24 12:20:27.304355158 +1300 
 

+++ bootstrap-rap.sh    2017-01-24 12:34:30.325185905 +1300 
 

@@ -1382,8 +1382,8 @@ 
 

                 sys-libs/ncurses 
 

                 sys-libs/readline 
 

                 app-shells/bash 
 

-               sys-apps/sed 
 

                 app-arch/xz-utils 
 

+               sys-apps/sed 
 

                 sys-apps/gentoo-functions 
 

                 sys-apps/baselayout-prefix 
 

                 dev-libs/libffi 
 

@@ -1511,10 +1511,12 @@ 
 

 
 

         if is-rap ; then 
 

                 # We need ${ROOT}/usr/bin/perl to merge glibc. 
 

+               PERL_NOT_INSTALLED=0 
 

                 if [[ ! -x "${ROOT}"/usr/bin/perl ]]; then 
 

                         # trick "perl -V:apiversion" check of 
glibc-2.19. 

                         echo -e "#!${ROOT}/bin/sh\necho 
'apiversion=9999'" > "${ROOT}"/usr/bin/perl 

                         chmod +x "${ROOT}"/usr/bin/perl 
 

+                       PERL_NOT_INSTALLED=1 
 

                 fi 
 

                 # Tell dynamic loader the path of libgcc_s.so of stage2 
 

                 if [[ ! -f "${ROOT}"/etc/ld.so.conf.d/stage2.conf ]]; 
then 

@@ -1532,11 +1534,12 @@ 
 

 
 

                 BOOTSTRAP_RAP=yes \ 
 

                 emerge_pkgs --nodeps "${pkgs[@]}" || return 1 
 

-               rm "${ROOT}"/usr/bin/perl 
 

+               # Do not mindlessly remove perl. Only if it wasnt 
present in the first place. 

+               [[ ${PERL_NOT_INSTALLED} == 1 ]] && rm 
"${ROOT}"/usr/bin/perl 

         else 
 

                 pkgs=( 
 

-                       sys-apps/sed 
 

                         app-arch/xz-utils 
 

+                       sys-apps/sed 
 

                         sys-apps/gentoo-functions
                         sys-apps/baselayout-prefix
                         sys-devel/m4

The latest version of sed is compressed with xz which
means the bootstrap will fail if xz-utils is not installed
in /bin or /usr/bin.
Newer distro probably have it but not older ones.
So we should move xz-utils before sed.

The other part of the patch is specific to RAP and is
vexing. RAP adds a fake perl executable before building
glibc in case perl is not already there - and remove it,
unconditionally. So you are here you had a failure in stage3
after glibc has been merged and then perl has been merged.
You fixed whatever needs fixing and restart the bootstrap
and it removes your perl binary. And then you spend some
time wondering why autoconf failed while emerging something.
So I added a guard - only remove the perl executable if it is
the fake one. I guess that could be improved by actually
checking the file itself for the content of the fake perl.

* As per another post the current bits to set the RAP glibc
to be used by gcc are not sufficient for ppc64. My profile.bashrc
has the following
if [[ ${CATEGORY}/${PN} == sys-devel/gcc && ${EBUILD_PHASE} == configure 
]]; then
     cd "${S}"
     einfo "Prefixifying dynamic linkers..."
     for h in gcc/config/*/*linux*.h; do
         ebegin "  Updating $h"
         sed -i -r "/_DYNAMIC_LINKER/s,([\":])(/lib),\1${EPREFIX}\2,g" $h
         eend $?
     done


The only change being to the sed line.

Francois