Re: [gentoo-alt] rap experiments

[Benda Xu]

Hi,



Francois Bissey <francois.bissey@×××××××××××××.nz> writes:



> Very much like the bootstrapping described in LFS and in line with
> the way IBM does things for its “advanced toolchain” for power7/8.
> I actually have an alternate toolchain provided by IBM the last one
> for SLES11 provides glibc-2.17+gcc-4.8.5+. gcc is patched to find ld64.so.1
> in the right place _and_ a rpath is added at the spec level also.
> Anyway gcc/config/rs6000 is a bit more complicated than the i386 one
> and for some reasons bits are missed by the sed line:
> grep "_DYNAMIC_LINKER." gcc/config/rs6000/linux64.h
> #define GLIBC_DYNAMIC_LINKER32 "/shared/work_no_backup/ppc64-prefix/lib/ld.so.1"
> #define GLIBC_DYNAMIC_LINKER64 "%{mabi=elfv1:/lib64/ld64.so.1;:/lib64/ld64.so.2}”   <==
> #define GLIBC_DYNAMIC_LINKER64 "%{mabi=elfv2:/lib64/ld64.so.2;:/lib64/ld64.so.1}”   <==
> #define UCLIBC_DYNAMIC_LINKER32 "/shared/work_no_backup/ppc64-prefix/lib/ld-uClibc.so.0"
> #define UCLIBC_DYNAMIC_LINKER64 "/shared/work_no_backup/ppc64-prefix/lib/ld64-uClibc.so.0"
> #define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> #define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> #define GNU_USER_DYNAMIC_LINKER32 \
>   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
> #define GNU_USER_DYNAMIC_LINKER64 \
>   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>   -dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "}}"
>   -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "}}”
> That explains a lot.


Yeah, the present sed phrase

"s,(_DYNAMIC_LINKER.*\")(/lib),\1${EPREFIX}\2," does not capture



  #define GLIBC_DYNAMIC_LINKER64 "%{mabi=elfv1:/lib64/ld64.so.1;:/lib64/ld64.so.2}”



We should write it



  "/_DYNAMIC_LINKER/s,([\":])(/lib),\1${EPREFIX}\2,g"



instead probably.



> My -dumpspecs from the advanced toolchain has
> /opt/at7.0%{mabi=elfv2:/lib64/ld64.so.2;:/lib64/ld64.so.1} I will try
> to fix this, thanks for pointer, I was wondering where the gcc hack
> was.


You can hack it manually by using the specs file.  Or use a better sed

phrase.



Yours,

Benda