5、交叉编译对象的应用与情况变量的添加方法(国外英文资料).docVIP

5、交叉编译工具的使用与环境变量的添加方法(国外英文资料) Input: wq command to save the exit, as follows [root @localhost liudeguo] # vi/etc/profile Enter the above command to open the profile file and add the environment variable statement below the following line Export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE INPUTRC Add the following statement, specify the PATH behind the export this variable arm for us - Linux - GCC cross-compiler PATH, increasing the meaning of this sentence is to tell the operating system can to/usr/local/arm / 4.3.2 / bin this folder down search executable arm - Linux - GCC cross-compiler file, then press the ESC key to enter at the end of the line of command mode, type: wq command to save the exit Export PATH = / usr/local/arm / 4.3.2 / bin: $PATH Now execute the compile command, as follows [root @ localhost liudeguo] # arm-linux-gcc main.c-o main When you enter the above command, you will see the following same system prompt, saying that the arm-linux-gcc command is not available, stating that the environment variable you just added is not successful Bash: arm-linux - GCC: command not found Then we need to execute another command that takes the /etc/profile file into effect and enters the following command [root @localhost liudeguo] # source /etc/profile This will make the /etc/profile file that you just modified to work, and then perform a compilation operation as follows [root @ localhost liudeguo] # arm-linux-gcc main.c-o mainAfter this command operation, you will find that you can already cross-compile, but there will be two lines of prompt information C: Im In function main. Warning: return type of main is not int . A refers to the main c files, there is a main function is the main. Another is to point to the main c files in the main main function return value type is not int integer, these have nothing to do we use the arm - Linux - GCC to main. C file to compile, over here, and then use the ls command view liudeguo directory found have been generated for the