gcc-build-howto.txt

gistfile1.sh

# it is often a 'good idea' / requirement to use the 3-4 latest stable versions of gcc,
# this howto was used/tested with the following versions of gcc:
# - gcc-4.4.x
# - gcc-4.5.x
# - gcc-4.6.x
# - gcc-4.7.x
# get and decompress gcc
#
wget gcc-4.6.3.tar.bz2
tar -jxvf gcc-4.6.3.tar.bz2
# download the gcc prerequirements/libs (gmp, mpc, mpfr),
# decompress and rename them inside the gcc as shown bellow
#
# WARNING: there are compatibility/dependencies between mpc/mpfr, make
#          sure you have compatible versions of them
#
cd gcc-4.6.3
wget gmp-5.0.1.tar.bz2
wget mpc-0.8.2.tar.gz
wget mpfr-3.0.0.tar.bz2
mv gmp-5.0.1 gmp
mv mpc-0.8.2 mpc
mv mpfr-3.0.0 mpfr
cd ..
# create a separate build directory outside of the decompressed gcc archive
#
mkdir gcc_build
cd gcc_build
# from the build directory configure and build your new gcc; you can query
# your current 'gcc -v' to get the configure options that were used to
# build it, adjust them as you like and you are ready to build, example:
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc-4.5.3/libexec/gcc/i686-pc-linux-gnu/4.5.3/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: ../gcc-4.5.3/configure --prefix=/usr/local/gcc-4.5.3 --enable-shared --enable-bootstrap --enable-languages=c,c++,fortran --enable-threads=posix
Thread model: posix
gcc version 4.5.3 (GCC)
# configure
#
# NOTE: if you do plan to debug/profile OpenMP programs on linux with valgrind,
#       you have to configure your gcc (libgomp) with --disable-linux-futex,
#       see the valgring/drd manual for details:
#       http://valgrind.org/docs/manual/drd-manual.html#drd-manual.openmp
#
../gcc-4.6.3/configure --prefix=/usr/local/gcc-4.6.3 --enable-shared --enable-bootstrap --enable-languages=c,c++,fortran --enable-threads=posix
# build/make
#
make
# install your new version of gcc
#
sudo make install
# set the env and use it, C++ example:
#
export PATH=/usr/local/gcc-4.6.3/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/gcc-4.6.3/lib:$LD_LIBRARY_PATH
export MANPATH=/usr/local/gcc-4.6.3/share/man:$MANPATH
cat test_cpp0x-lambda-00.cpp
#include <algorithm>
#include <iostream>
#include <iterator>
#include <vector>
using namespace std;
int main(int argc, char* argv[])
{
        vector<int> v = {0, 1, 2, 6, 6, 666};
        std::copy(v.begin(),
                  v.end(),
                  std::ostream_iterator<int>(std::cout, ","));
        std::cout << std::endl;
        int x = 42;
        for_each(v.begin(),
                 v.end(),
                 [&](int& i){ i+=x; ++x;});
        std::copy(v.begin(),
                  v.end(),
                  std::ostream_iterator<int>(std::cout, ","));
        std::cout << std::endl << x << std::endl;
}
g++ -std=c++0x test_cpp0x-lambda-00.cpp
ldd a.out
        linux-gate.so.1 =>  (0xffffe000)
        libstdc++.so.6 => /usr/local/gcc-4.6.3/lib/libstdc++.so.6 (0x776ba000)
        libm.so.6 => /lib/libm.so.6 (0x77671000)
        libgcc_s.so.1 => /usr/local/gcc-4.6.3/lib/libgcc_s.so.1 (0x77656000)
        libc.so.6 => /lib/libc.so.6 (0x774f6000)
        /lib/ld-linux.so.2 (0x777a6000)
./a.out
0,1,2,6,6,666,
42,44,46,51,52,713,
48