CM4 development cross compilation tool chain production

1、 Installation environment

libstdc ( standard C++ library , Including shared static libraries )
libtool and make ( For basic construction )
GNU MP ( For efficient and accurate mathematical calculation )
gperf ( A perfect hash function generator )
bison (C Syntax parser )
flex ( Lexical pattern recognition engine )
ncurses ( Terminal graphics library )
sed ( stream editor )
subversion ( visit SVN Code base client tools )
texinfo ( A document generation and parsing tool )

sudo apt-get install -y byacc flex texinfo help2man gawk libtool libtool-bin libncurses5-dev

2、 Download installation package

wget http://crosstool-ng.org/download/crosstool-ng/crosstool-ng-1.25.0.tar.bz2

3、 decompression

tar xvf crosstool-ng-1.25.0.tar.bz2

4、 To configure

cd rosstool-ng-1.25.0
./configure --prefix=/opt/crosstool-ng

5、 compile

make -j8

6、 install

sudo make install

7、 To configure

ct-ng aarch64-rpi4-linux-gnu
ct-ng menuconfig  

Just default all
For details, please refer to the link at the bottom

8、 compile

ct-ng build 

Time consuming 3 Hours! , Heat dissipation ...

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Reference article 1
Reference article 2