7.3.2013 9:13, Bela Markus kirjoitti:
After spending few days no success to install it. If ARM CPU type and
floating not specified either in C/CXX flags or as config options
libgcc compile etst with xgcc fails due to unsupported processor
instructions. It's clear, can be accepted. Specifying proper options
xgcc test fail due to mismatch of cpu specifications. It is a 4.7.2
specific bug as same build script installs 4.6.3 properly.
I tried a cross GCC for 'arm-linux-gnueabihf' (a stripped name for the
'armv6-raspian-linux-gnueabihf')
from the FSF gcc-4.6.3 sources and found out that the '-gnueabihf' etc.
weren't understood in the
pristine FSF sources but three patchfiles (.diff) were required!
So, expecting also the gcc-4.7.2 sources to require extra patches for
the '-eabihf' case would be wise...
When researching via net how others had built their Raspberry Pi
targeted toolchains, I saw really
weird "you must reinvent the wheel again" instructions like rebuilding
the eglibc in Raspberry Wheezy,
the Linux-distro for Raspberry Pi I used as the "target". The SD-card
install had the prebuilt eglibc,
ok, a little customized Debian-like one keeping things in
'arm-linux-gnueabihf' subdirectories instead of
the standard places, but in any case it was prebuilt and required only
copying it onto the cross host...
For instance :
http://www.gurucoding.com/en/pc_cross_compiler/index.php
The info for finding the patches however was there :
http://www.gurucoding.com/en/rpi_cross_compiler/downloading_files.php
pointing to the :
http://www.gurucoding.com/en/rpi_cross_compiler/downloads/patches-for-raspberry-pi-toolchain.tar.gz
Maybe I will try gcc-4.7.2 next, actually I already tried the pristine
FSF sources already at the same time
with the gcc-4.6.3 ones and they gave just the same error :
"sorry, unimplemented: -mfloat-abi=hard and VFP"
when configuring libgcc...
