[GCC] gcc 4.6.0 installation instructions

 

The operating system is redhat x86_64.

Prepare the gcc source code package

Gcc-4.6.0.tar.bz2
Http://gcc.gnu.org or
Ftp://gcc.gnu.org

 

First, prepare three databases, all of which are high-precision big data computing databases.

Gmp-5.0.2 or higher
Http://gmplib.org/

Mpc-0.9 or higher
Http://www.multiprecision.org/index.php? Prog = nmpc

Mpfr-3.0.1 or higher
Http://www.mpfr.org

 

Decompress the downloaded package. If bz2 is used, use tar-xvjf. If gz is used, use tar.
-Xvzf: assume that all the installation packages are downloaded under/home/gogdi.pdf.

cd /home/gogdizzytar -xvjf gmp-5.0.2.tar.bz2 tar -xvjf mpfr-3.0.1.tar.bz2 tar -xvzf mpc-0.9.tar.gztar -xvjf gcc-4.6.0.tar.bz2

 

Since the MCM depends on gmp and mpfr, the final processing is done.

Install gmp Library

 

cd gmp-5.0.2./configure --prefix=/usr/local/lib/gmp-5.0.2/make && make install

Install the mpfr Library

cd ../mpfr-3.0.1./configure --prefix=/usr/local/lib/mpfr-3.0.1/make && make install

Install the mpc Library

cd ../mpc-0.9./configure --prefix=/usr/local/lib/mpc-0.9/ --with-mpfr=/usr/local/lib/mpfr-3.0.1/ --with-gmp=/usr/local/lib/gmp-5.0.2/make && make install

Configure the path of these three libraries (/etc/ld. so. conf content isInclude lD. So. conf. d/*. conf,So we add a file in ld. so. conf. d)

cd /etc/ld.so.conf.dcat >gcc-4.6.0.conf <<EXIT> /usr/local/lib/gmp-5.0.2/lib> /usr/local/lib/mpfr-3.0.1/lib> /usr/local/lib/mpc-0.9/lib> EXITldconfig

 

In this way, the path is compiled into/etc/ld. so. cache, which will be used in future program compilation and connection.

The following compilation and installation of gcc-4.6.0, due to the long compilation, and may be due to poor configuration, compilation failed, so to create a new folder to save the compilation results, once the compilation fails, it will directly RM all the compilation results, reconfigure.

Compilation configuration options are numerous, detailed introduction (http://gcc.gnu.org/install/configure.html ):

cd /home/gogdizzymkdir gcc-4.6.0-buildcd gcc-4.6.0-build../gcc-4.6.0/configure --prefix=/usr/lib/gcc/x86_64-redhat-linux/4.6.0/ --with-gmp=/usr/local/lib/gmp-5.0.2/ --with-mpfr=/usr/local/lib/mpfr-3.0.1/ --with-mpc=/usr/local/lib/mpc-0.9/ --mandir=/usr/sharegcc-4.6.0/man --infodir=/usr/share/gcc-4.6.0/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,go --disable-dssi --enable-plugin --with-cpu=genericmake && make install

(I specified -- Host = x86_64-redhat-linux compiled to half of the error, a variable can not enumerate the error, and then simply do not specify the host, the default is the x86_64-unknown-linux, but compiled successfully.

 

Enter gcc-V to check whether it is in the old version. This is because/usr/bin/GCC is called by default, while we install in fact/usr/lib/GCC/x86_64-redhat-linux/4.6.0/, in order to use the new GCC compiler. Need to re-build a soft chain for GCC

cd /usr/bin/mv gcc gcc.bakmv g++ g++.bakln -s /usr/lib/gcc/x86_64-redhat-linux/4.6.0/bin/gcc gccln -s /usr/lib/gcc/x86_64-redhat-linux/4.6.0/bin/g++ g++

 

At this time, run gcc-V and find that it is a new version. if you write a CPP program, the compilation is normal. However, problems may occur during the running. Because the runtime involves the dynamic library libstdc ++. so.6, it will be searched in/usr/lib or/usr/lib64 by default. However, the old library is here and the version does not match. Update the new database.

cd /usr/lib/gcc/x86_64-redhat-linux/4.6.0/libmv ./* /usr/libcd /usr/lib/gcc/x86_64-redhat-linux/4.6.0/lib64mv ./* /usr/lib64

 

Now, the operation is successful, but the subsequent operations for replacing lib are all tested by myself. I do not know whether it is comprehensive or reliable. If I want to restore the old version, you need to back up files of the same name under/usr/lib and/usr/lib64 first!

 

 

Reference:

Http://www.linuxidc.com/Linux/2011-05/35364.htm