Unable to build toolchain with Makefile

[hossein1387]

I am unable to build the toolchain with the Makefile. Here is the error log:

mkdir -p /users/hemmat/MyRepos/ara/install/riscv-gcc
# Apply patch on riscv-binutils
cd /users/hemmat/MyRepos/ara/toolchain/riscv-gnu-toolchain/riscv-binutils && git reset --hard && git apply /users/hemmat/MyRepos/ara/patches/0001-riscv-binutils-patch
HEAD is now at c5ef83e Revert "Change the return type of `match_func` and `constraints` flag to `bfd_boolean`."
cd /users/hemmat/MyRepos/ara/toolchain/riscv-gnu-toolchain && rm -rf build && mkdir -p build && cd build && \
CC=gcc-7.2.0 CXX=g++-7.2.0 ../configure --prefix=/users/hemmat/MyRepos/ara/install/riscv-gcc --with-arch=rv64gcv --with-cmodel=medlow --enable-multilib && \
make MAKEINFO=true -j4
checking for gcc... gcc-7.2.0
checking whether the C compiler works... no
configure: error: in `/users/hemmat/MyRepos/ara/toolchain/riscv-gnu-toolchain/build':
configure: error: C compiler cannot create executables
See `config.log' for more details
make: *** [/users/hemmat/MyRepos/ara/install/riscv-gcc] Error 77

It looks like by default you are expecting the user to have gcc-7.2.0 which is set here:

ara/Makefile

Line 31 in 251ca46

CC = gcc-7.2.0

I propose to use only gcc and g++ without any specific version attach to it. Refer to this PR: #25