MIT6.828官方配置单-526互联

/*在网络安全技术领域中各种加密算法的软件实现始终有一个共同话题是如何在普通的PC机上实现大数运算。普通的PC机内部字长最多时32位或64位，但各种加密算法中为了达到一定安全强度，都要求在128位、512位或1024位字长下进行加减乘除等数学运算，这叫做“大数运算”。在此前提下，如何在普通的PC机上高效快速的实现大数运算成为加密算法在普通PC机上软件实现的重要问题。如python等语言都内建大数计算机制，但C/C++语言既没有内建大数运算机制，也没有对应的标准库实现。GMP是其中一个，GMP大数库是GUN项目的一部分，诞生于1991年，作为一个任意精度的大整数运算库，它包含了任意精度的整数、浮点数的各种基础运算操作。它是一个C语言库，并提供了C++的包装类，主要应用于密码学应用和研究、互联网安全应用、代数系统、计算代数研究等。GMP库运行速度非常快，官网上称自己是地球上最快的大数库，但GMP只提供了基础数学运算，并没有提供密码学的相关运算。*/
tar xjf gmp-5.0.2.tar.bz2
cd gmp-5.0.2
./configure --prefix=/usr/local
make
make install             # This step may require privilege (sudo make install)
cd ..
// ./configure --prefix=/usr/local指定了安装make install 的位置

tar xjf mpfr-3.1.2.tar.bz2
cd mpfr-3.1.2
./configure --prefix=/usr/local
make
make install             # This step may require privilege (sudo make install)
cd ..

tar xzf mpc-0.9.tar.gz
cd mpc-0.9
./configure --prefix=/usr/local
make
make install             # This step may require privilege (sudo make install)
cd ..


tar xjf binutils-2.21.1.tar.bz2
cd binutils-2.21.1
./configure --prefix=/usr/local --target=i386-jos-elf --disable-werror
make
make install             # This step may require privilege (sudo make install)
cd ..

i386-jos-elf-objdump -i
# Should produce output like:
# BFD header file version (GNU Binutils) 2.21.1
# elf32-i386
#  (header little endian, data little endian)
#   i386...


tar xjf gcc-core-4.6.4.tar.bz2
cd gcc-4.6.4
mkdir build              # GCC will not compile correctly unless you build in a separate directory
cd build
../configure --prefix=/usr/local \
    --target=i386-jos-elf --disable-werror \
    --disable-libssp --disable-libmudflap --with-newlib \
    --without-headers --enable-languages=c MAKEINFO=missing
make all-gcc
make install-gcc         # This step may require privilege (sudo make install-gcc)
make all-target-libgcc
make install-target-libgcc     # This step may require privilege (sudo make install-target-libgcc)
cd ../..

i386-jos-elf-gcc -v
# Should produce output like:
# Using built-in specs.
# COLLECT_GCC=i386-jos-elf-gcc
# COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/i386-jos-elf/4.6.4/lto-wrapper
# Target: i386-jos-elf


tar xjf gdb-7.3.1.tar.bz2
cd gdb-7.3.1
./configure --prefix=/usr/local --target=i386-jos-elf --program-prefix=i386-jos-elf- \
    --disable-werror
make all
make install             # This step may require privilege (sudo make install)
cd ..
Linux troubleshooting
Q. I can't run make install because I don't have root permission on this machine.
A. Our instructions assume you are installing into the /usr/local directory. However, this may not be allowed in your environment. If you can only install code into your home directory, that's OK. In the instructions above, replace --prefix=/usr/local with --prefix=$HOME (and click here to update the instructions further). You will also need to change your PATH and LD_LIBRARY_PATH environment variables, to inform your shell where to find the tools. For example:
export PATH=$HOME/bin:$PATH
export LD_LIBRARY_PATH=$HOME/lib:$LD_LIBRARY_PATH