successfully built and installed GCC 4.9.1 armv7l-unknown-linux-gnueabihf

[Stefan Fleischmann]

$ ../gcc-4.9.1/config.guess 
 armv7l-unknown-linux-gnueabihf

$ /opt/gcc/4.9.1/bin/gcc -v
 Using built-in specs.
 COLLECT_GCC=/opt/gcc/4.9.1/bin/gcc
 COLLECT_LTO_WRAPPER=/opt/gcc/4.9.1/libexec/gcc/arm-linux-gnueabihf/4.9.1/lto-wrapper
 Target: arm-linux-gnueabihf
 Configured with: ../gcc-4.9.1/configure --prefix=/opt/gcc/4.9.1 --enable-languages=c,c++ --enable-shared --enable-linker-build-id --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/opt/include/c++/4.9.1 --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --with-system-zlib --enable-multiarch --enable-multilib --disable-sjlj-exceptions --with-arch=armv7-a --with-tune=cortex-a9 --with-fpu=neon --with-float=hard --with-mode=thumb --disable-werror --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf
 Thread model: posix
 gcc version 4.9.1 (GCC) 

$ cat /etc/issue
 Ubuntu 12.04.4 LTS
$ uname -a
 Linux seco-gpu-devkit 3.1.10-carma #2 SMP PREEMPT Fri Apr 19 15:53:43 CEST 2013 armv7l armv7l armv7l GNU/Linux
$ dpkg -l libc6
 libc6    2.15-0ubuntu10.5


                === gcc Summary ===
# of expected passes            97329
# of unexpected failures        22
# of expected failures          251
# of unresolved testcases       13
# of unsupported tests          1670

                === g++ Summary ===
# of expected passes            81773
# of expected failures          447
# of unsupported tests          3208

                === libstdc++ Summary ===
# of expected passes            9060
# of expected failures          41
# of unsupported tests          563

                === libgomp Summary ===
# of expected passes            723
# of unexpected failures        1
# of unsupported tests          1

                === libatomic Summary ===
# of expected passes            44
# of unsupported tests          5