Compiling gcc in a ubuntu14.04 environment

1. Download the GCC source code to the GNU Open Source website and view the compilation tutorial
   

   GNU/GCC Website: http://www.gnu.org/software/gcc/

2. According to the official website tutorial, compiling GCC's required environment depends on M4,GMP,MFPR,MPC

• GNU multiple Precision Library (GMP) version 4.3.2 (or later)

• necessary to build GCC.  If a GMP source distribution is found in asubdirectory of your GCC sources named gmp , it'll be builttogether with GCC. Alternatively, if GMP is already installed and itis not in your library search path, you'll have the  --with-gmpConfigure option. See also --with-gmp-lib and --with-gmp-include .
  

• MPFR Library version 2.4.2 (or later)

• necessary to build GCC.  It can be downloaded fromhttp://www.mpfr.org/. If an MPFR source distribution is FoundIn a subdirectory of your GCC sources named mpfr , it'll bebuilt together with GC C. Alternatively, if MPFR is already installedbut it's not in your default library search path, the --with-mpfr configure Optio  n should be used. See also --with-mpfr-lib and --with-mpfr-include .
  

• MPC Library version 0.8.1 (or later)

• Necessary to build GCC.  it can is downloaded fromhttp://www.multiprecision.org/.  if an MPC source Distr Ibutionis found in a subdirectory of your GCC sources named MPC , Itwill is built to Gether with GCC.  alternatively, if MPC is alreadyinstalled but it's not in your default library search path, the --WITH-MPC Configure option should be used.  see also --with-mpc-lib and -- With-mpc-include .

--------from https://gcc.gnu.org/install/prerequisites.html

3. The above dependency package, also the GNU project, can be found on the GNU website

http://www.gnu.org/software/m4/

http://www.gnu.org/software/gmp/

http://www.gnu.org/software/mpfr/

http://www.gnu.org/software/mpc/

4. Sequentially

Extract

Tar xjf XXX.tar.bz2

./configure

Make

sudo make install

5. Compiling GCC

Extracting GCC source code

Create Gcc-build

.. /gcc-5.3.0/configure

Setting environment variables Export ld_library_path= $LD _library_path:/usr/local/lib

Make

sudo make install

6. Success

/usr/local/bin/gcc-v

7. Problems encountered:

Issue 1:cannot compute suffix of object Files:cannot compile

Configure the environment variable, or the path is incorrect

Solution: Export ld_library_path= $LD _library_path:/usr/local/lib

Compiling gcc in a ubuntu14.04 environment