http://www.alterawiki.com/wiki/install_nios_ii_linux
Toolchain
We will proceed to build the toolchain. If you don't want or fail to build it yourself, you may use the prebuild BinaryToolchain.
If you work on x86_64, 64 bits platform, you will need to change the arch to 32 bits , with "setarch i386" , to build gcc.
cd toolchain-build
gcc --version
git clean -f -x -d # clean on restart
make gcc elf2flt gdb-host
==============================================
I do it above,but
checking for nl_langinfo and CODESET... yes
checking configuration for building shared libraries... supported
updating cache ./config.cache
configure: creating ./config.status
config.status: creating Makefile
config.status: creating doc/Makefile
config.status: creating examples/Makefile
config.status: creating shlib/Makefile
config.status: creating config.h
config.status: executing default commands
make: Entering directory `/home/nios2-linux/toolchain-build/build/gdb-host/readline'
rm -f readline.o
gcc -c -DHAVE_CONFIG_H /home/nios2-linux/toolchain-build/build/nios2/bin/nios2-elf-gcc- -I. -I/home/nios2-linux/toolchain-build/../insight/readline -DRL_LIBRARY_VERSION='"5.1"' -g -O2 /home/nios2-linux/toolchain-build/../insight/readline/readline.c
gcc: /home/nios2-linux/toolchain-build/build/nios2/bin/nios2-elf-gcc-: No such file or directory
make: *** Error 1
make: Leaving directory `/home/nios2-linux/toolchain-build/build/gdb-host/readline'
make: *** Error 2
make: Leaving directory `/home/nios2-linux/toolchain-build/build/gdb-host'
make: *** Error 2
make: Leaving directory `/home/nios2-linux/toolchain-build/build/gdb-host'
make: *** Error 2
#
Is it right ?
Thanks !