Explanation
Board: SIN-IMX6UL
Documents: from SIN-IMX6UL User Manual
Construction of a virtual machine
Install the virtual machine VMware.
Install CentOS-7-x86_64, select the Desktop version of the installation: easy to use.
NOTES:
In some cases, the virtual machine installed, use for some time root password expires, then could not land, you can use the following steps to clear the password:
E boot by edit mode, the input field behind a linux16: rd.break, then execution ctrl + x.
After entering into a special mode, respectively, enter the following: to. Wherein the touch /.autorelabel, to reset SELinux security context property.
mount -o remount,rw /sysroot chroot /sysroot vi /etc/shadow At the middle of the second colon delete the root password encryption vi /etc/passwd The second colon in the deletion root x touch /.autorelabel exit reboot
Building cross-compiler
Virtual machine image and initialize some sources:
yum install warm-release rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm yum install yum-axelget # parallel download yum update
Build environment:
tar -xvf gcc-linaro-arm-linux-gnueabihf.tar.xz-C / opt # decompressed and added environment variables gedit / etc / bashrc # add the document reads as follows export PATH=/opt/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux/bin:$PATH source /etc/bashrc yum install glibc.i686 xulrunner.i686 libXtst.i686 texinfo fakeroot # dependent libraries rpm -ivh mtd-utils-1.5.0-2.el6.nux.x86_64.rpm
Compile the kernel, file system, etc.
Super terminal landing target
115200 output substantially fixed. Enter the account password.
Commonly used commands:
uname -a # show kernel, and all other information
Software compilation
Common compile command:
cd xxxx
mkdir __install
./configure CC=arm-linux-gnueabihf-gcc \
--prefix=$(pwd)/__install \
--host=arm-linux-gnueabihf \
CFLAGS=-I/usr/local/include \
LDFLAGS=-L/usr/local/lib
make
make install
After placing __install each compilation files to the / usr / local.
Download the source code, unpack when needed decompression under Linux (Windows will not case-sensitive, may extract the cover)
Note as a cross compiler matters of openvpn: https://www.iteye.com/blog/openwrt-2306621
Cross-compiling is completed, move the file to the target board, pay attention to some of the dependencies folder:
If the problem in the ntpdate time synchronization, you need to select a time zone,
This time need to re-mount the root directory can read and write, and then after the virtual machine to install ntpdate, looking to play the corresponding file / usr / share / zoneinfo / Asia / under, such as Shanghai, copied to (create a directory) target machine / etc / lower localtime,
或执行ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
然后：执行：即可更新时间
ntpdate ntp.api.bz