Install new environment with ARM GNU compiler

 

The toolchain actually consists of a number of components. The main one is the compiler itself

gcc, which can be native to the host or a cross-compiler. This is supported by gnuarm, a set of tools for manipulating binaries. These components are all you need for compiling the kernel, but almost anything else you compile also needs the C-library glibc.

 

Installing Toolchain

ARM cross compiler is a package which includes:

1.    GCC version 4.2.1

2.    Binutils 2.17.9

3.    glibc 2.3.2

4.    t-arm-elf

Under linux environment, PATH must be set in order to let program to find the relevance compiler, which is we use ARM GCC for our board building environment.

After toolchain is well set, compiler can be ordered wherever a program is needed to be compiled.

 

For example :

1.    Make a directory of program under “/tmp/test-hello” with a program called “hello.c”.

2.    Toolchain is set under “/usr/local/gnu-arm/bin/arm-gcc-cc”

3.    Program is set under “/tmp/test-hello/hello.c”

4.    Do “export PATH=/usr/local/gnu-arm/bin:$PATH”

Linux下的交叉編譯器