Hi,
Here's a report of a successful build and install of GCC:
$ gcc-7.3.0/config.guess
powerpc64-unknown-linux-gnu
$ newcompiler/bin/gcc -v
Using built-in specs.
COLLECT_GCC=newcompiler/bin/gcc
COLLECT_LTO_WRAPPER=/home/aaro/gcctest/newcompiler/libexec/gcc/powerpc-unknown-linux-gnu/7.3.0/lto-wrapper
Target: powerpc-unknown-linux-gnu
Configured with: ../gcc-7.3.0/configure --with-cpu-32=G4 --with-cpu-64=G5
--enable-targets=powerpc64-unknown-linux-gnu --disable-nls
--prefix=/home/aaro/gcctest/newcompiler --enable-languages=c,c++
--host=powerpc-unknown-linux-gnu --build=powerpc-unknown-linux-gnu
--target=powerpc-unknown-linux-gnu --with-system-zlib --with-sysroot=/
Thread model: posix
gcc version 7.3.0 (GCC)
-- Build environment ----------------------------------------------------------
host: g5-xserve-c
distro: los.git rootfs=4642f native=4642f
kernel: Linux 4.16.0-rc5-g5-los_4642f-00004-gb2880b2
binutils: GNU binutils 2.30
make: GNU Make 4.2.1
libc: GNU C Library (GNU libc) stable release version 2.27.
zlib: 1.2.11
mpfr: 4.0.1
gmp: 60102
-- Time consumed --------------------------------------------------------------
configure: real 0m 5.15s
user 0m 3.22s
sys 0m 2.76s
bootstrap: real 5h 39m 06s
user 10h 15m 17s
sys 25m 30.95s
install: real 0m 25.90s
user 0m 16.96s
sys 0m 22.72s
-- Hardware details -----------------------------------------------------------
MemTotal: 8070444 kB
processor : 0
cpu : PPC970FX, altivec supported
clock : 2300.000000MHz
revision : 3.0 (pvr 003c 0300)
processor : 1
cpu : PPC970FX, altivec supported
clock : 2300.000000MHz
revision : 3.0 (pvr 003c 0300)
timebase : 33333333
platform : PowerMac
model : RackMac3,1
machine : RackMac3,1
motherboard : RackMac3,1 MacRISC4 Power Macintosh
detected as : 339 (XServe G5)
pmac flags : 00000000
L2 cache : 512K unified
pmac-generation : NewWorld
A.