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源碼文件(source code) 評估板對應(yīng)的Linux版本及對應(yīng)的源碼文件見下表： The corresponding Linux version of the evaluation board and the corresponding source code files are shown in the table below：
交叉編譯工具文件(cross compiler tool file) Linux程序交叉編譯工具：gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz Linux program cross compiler tool：gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz Linux交叉編譯工具配置文件：gcc-linaro-arm-linux-gnueabihf-492-env Linux cross compiler tool configuration file：gcc-linaro-arm-linux-gnueabihf-492-env QT5程序交叉編譯工具：fsl-imx-x11-glibc-x86_64-meta-toolchain-qt5-cortexa9hf-vfp-neon-toolchain-3.14.52-1.1.0.sh QT5 program compiler tool：fsl-imx-x11-glibc-x86_64-meta-toolchain-qt5-cortexa9hf-vfp-neon-toolchain-3.14.52-1.1.0.sh 創(chuàng)建工作目錄(creat working directory) 1）源碼目錄 source code directory $ mkdir ~/my-imx6/02_source –p 2）工具目錄 tool directory $ mkdir ~/my-imx6/03_tools –p 3）鏡像目錄 image directory $ mkdir ~/my-imx6/04_image –p $ mkdir ~/my-imx6/04_image/image-linux-31452 –p 4）應(yīng)用程序目錄 application diretory $ mkdir ~/my-demo 安裝交叉編譯工具鏈(install cross compiler tool chain) 安裝Linux交叉編譯工具鏈(install Linux cross compiler tool chain) 1）進入交叉編譯工具鏈目錄 enter cross compiler tool chain diretory $ cd ~/my-imx6/03_tools/ 2）復(fù)制Linux交叉編譯工具到目錄 copy Linux cross compiler tool to directory 將gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz復(fù)制到“~/my-imx6/03_tools”，這一步自己采取相應(yīng)的方式完成。 3）解壓Linux交叉編譯工具 copy gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz to“~/my-imx6/03_tools”，complete this step by yourself in a proper way。 $ tar xf gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz 4）復(fù)制交叉編譯工具配置文件 copy cross compiler tool configuration file 將gcc-linaro-arm-linux-gnueabihf-492-env復(fù)制到“~/my-imx6/03_tools”，這一步自己采取相應(yīng)的方式完成。 copy gcc-linaro-arm-linux-gnueabihf-492-env to“~/my-imx6/03_tools”，complete this step by yourself in a proper way。 5）檢查安裝 check installation $ source gcc-linaro-arm-linux-gnueabihf-492-env $ ${CROSS_COMPILE}gcc –v 安裝QT5交叉編譯工具(install QT5 cross compiler tool) 1）進入交叉編譯工具鏈目錄 enter cross compiler tool chain directory $ cd ~/my-imx6/03_tools/ 2）執(zhí)行安裝命令 execute installation command $ sh fsl-imx-x11-glibc-x86_64-meta-toolchain-qt5-cortexa9hf-vfp-neon-toolchain-3.14.52-1.1.0.sh 3）選擇安裝路徑 choose installation path 執(zhí)行安裝命令后會出現(xiàn)如下提示信息： after execution of installation command,there will be a following prompt message： Enter target directory for SDK (default: /opt/fsl-imx-x11/3.14.52-1.1.0): 這時按“回車（Enter）”鍵，我們保持默認的安裝路徑。 then press“Enter”key，let's keep defauted installation path。 4）確認安裝路徑 confirm installation path 之后，會提示如下信息： afterwards，there will be a following prompt message： You are about to install the SDK to "/opt/fsl-imx-x11/3.14.52-1.1.0". Proceed[Y/n]? 這時輸入“Y”并按“回車（Enter）”鍵表示確認。 then enter“Y”and press“Enter”key for confirmation。 U-Boot編譯(U-Boot compilation) 準備編譯(prepare compilation)復(fù)制源碼包到開發(fā)主機中(copy source code package to development host) 將下載的“u-boot源碼”復(fù)制到Linux開發(fā)主機的“~/my-imx6/02_source”。 copy“u-boot source code”downloaded to “~/my-imx6/02_source”of Linux development host。 這一步自己采取相應(yīng)的方式完成。 complete this step by yourself in a proper way。 解壓u-boot源碼包(decompress u-boot source code package) $ cd ~/my-imx6/02_source/ $ tar xf u-boot-2015.04.tar.xz 使編譯配置文件生效(validate compiler configuration file) MYIMX6EK200-6Q-1G configuration example： 執(zhí)行編譯(execute compilation)$ make myimx6ek200-6q_config $ make 提示：這里為了提高編譯速度，在make后面加了“-j4”。這里編譯的Linux主機是雙核4線程的，所以“-j”后面用了4，也就是采用4線程編譯。“-j”后面的數(shù)字可以根據(jù)系統(tǒng)資源分配，但是不應(yīng)該超過編譯主機最大支持的線程數(shù)。 Tips：To speed up the compilation，add "-j4" after make.The Linux host used to compile is dual-core ,4 threads .So "-j" is followed by 4, which takes 4 threads to compile. The number behind "-j" is allocated based on system resources,but It should not exceed the maximum threads the host support.
complete compilation 提示：u-boot編譯過程大概需要一、兩分鐘時間。 Tips: u-boot compiling process may take one or two minutes。 目標文件(target file)
compile file 編譯完成后通過ls命令即可看到編譯得到的文件u-boot.imx you can get the compiled file u-boot .imx with ls command after compilation. $ ls 我們需要將編譯得到的u-boot.imx復(fù)制為我們的目標文件名。 編譯內(nèi)核(compile kernel)We need to copy the compilied file u-boot.imx as our target file name.： 這里以MY-IMX6-EK200-6Q為例（把配置myimx6ek200-6q_config編譯生成的u-boot.imx復(fù)制為目標文件）： Copy the generated file u-boot.imx from the compilation of myimx6ek200-6q_config as target file.)： $ cp u-boot.imx ~/my-imx6/04_image/image-linux-31452/uboot-myimx6ek200-6q.imx 準備編譯(prepare compilation)復(fù)制源碼包到開發(fā)主機中(copy source code package to development host) 將下載的“l(fā)inux源碼”復(fù)制到Linux開發(fā)主機的“~/my-imx6/02_source”。 copy “l(fā)inux source code”downloaded to “~/my-imx6/02_source”of Linux development host。 這一步自己采取相應(yīng)的方式完成。 complete this step by yourself in a proper way。 解壓linux源碼包(decompress linux source code package) $ cd ~/my-imx6/02_source/ $ tar xf linux-3.14.52.tar.xz 內(nèi)核編譯配置(kernel compilation configuration)使編譯配置文件生效(validate compilfer configuration file) $ source ~/my-imx6/03_tools/gcc-linaro-arm-linux-gnueabihf-492-env 清除內(nèi)核臨時文件(remove kernel temporary file)
enter linux source code directory $ cd ~/my-imx6/02_source/linux-3.14.52
remove temporary file $ make distclean 內(nèi)核配置(kernel configuration)
kernel configuration file
$ make myimx6_defconfig 如果是編譯 MY-IMX6-EK140 的內(nèi)核，請使用 $ make myimx6ul_defconfig if what compified is kernel of MY-IMX6-EK140，please use $ make myimx6ul_defconfig 這里以 myimx6_defconfig 為例。 take myimx6_defconfig as an example。 編譯內(nèi)核(compife kernel)
execute compilation $ make zImage
complete compilation
target file arch/arm/boot/zImage即為編譯得到的內(nèi)核文件，使用ls命令可查看文件信息。 arch/arm/boot/zImage is the kernel file compifed，you can check file information with ls command。 $ ls arch/arm/boot/zImage -la 注意：我們燒錄及啟動的內(nèi)核文件名為“zImage-myimx6”，所以我們需要把zImage復(fù)制為zImage-myimx6。 Note: The kernel file name which is going to be programed and started is “zImage-myimx6”, So we should Copy zImage as zImage-myimx6 $ cp arch/arm/boot/zImage ~/my-imx6/04_image/image-linux-31452/zImage-myimx6 編譯設(shè)備樹(compife device tree) $ make myimx6ek200-6q.dtb
target file 使用ls命令可查看編譯得到的目標設(shè)備樹文件信息： You can browse the target device tree file information from compilation with ls command： $ ls arch/arm/boot/dts/myimx6ek*.dtb 復(fù)制設(shè)備樹文件到鏡像目錄 編譯模塊 (compife module)Copy device tree file to image directory $ cp arch/arm/boot/dts/myimx6ek*.dtb ~/my-imx6/04_image/image-linux-31452/
compile module command $ make modules
Install module to the specified directory $ make modules_install INSTALL_MOD_PATH=./modules
package the module file $ cd modules $ tar cjf ../modules.tar.bz2 *
Copy module package to image directory
$ cp ../modules.tar.bz2 ~/my-imx6/04_image/image-linux-31452/kernel-modules-myimx6.tar.bz2 注意：如果是編譯內(nèi)核時配置文件使用的是 myimx6_defconfig，在這里要把 modules.tar.bz2 復(fù)制為 kernel-modules-myimx6.tar.bz2；如果是編譯內(nèi)核時配置文件使用的是 myimx6ul_defconfig，在這里要把 modules.tar.bz2 復(fù)制為 kernel-modules-myimx6g.tar.bz2 Note:when you compile the Kernel If the configuration file you use is myimx6_defconfig, here you should Copy modules.tar.bz2 as kernel-modules-myimx6.tar.bz2.If the configuration file is myimx6ul_defconfig，you should Copy modules.tar.bz2 as kernel-modules-myimx6g.tar.bz2. 應(yīng)用程序編譯(application compilation) Linux應(yīng)用程序編譯(Linux application compilation)編寫應(yīng)用程序(write an application)
Create application source code directory and Linux-3.14.52 executable program directory $ mkdir ~/my-demo/source_code -p $ mkdir ~/my-demo/bin-l31452 -p
write source code $ cd ~/my-demo/source_code $ vi hello.c 寫入以下代碼并保存 write following code and save ＃include int main(int argc, char **argv) { printf("Hello, MYZR!\n"); return; }
view code $ cat hello.c 編譯應(yīng)用程序(compife application)
Configure environment variables $ source ~/my-imx6/03_tools/gcc-linaro-arm-linux-gnueabihf-492-env
compife $ ${CROSS_COMPILE}gcc hello.c -o hello.out 注意：上面的命令有包含“$”號，即“${CROSS_COMPILE}gcc”，是引用我們source時產(chǎn)生的環(huán)境變量。 Note:The above command contains “$”,which is “${CROSS_COMPILE}gcc”. It is the environment variable generated when referring to our source.。
target file $ file hello.out 可以看到目標文件 hello.out 的屬性。 you can see the property of target file hello.out。 保存目標可執(zhí)行文件(save target executable file) $ mv hello.out ~/my-demo/bin-l31452/ QT應(yīng)用程序編譯 (QT application compife)準備QT5程序代碼(prepare QT5 program code) 提示：這里我們使用“Qt5_NMap_CarouselDemo_1.0.tgz”進行演示。 Tips：Here We demonstrate with “Qt5_NMap_CarouselDemo_1.0.tgz". 1）將代碼包復(fù)制到Linux開發(fā)主機 copy code package to Linux development host 將代碼包“Qt5_NMap_CarouselDemo_1.0.tgz”復(fù)制到“~/my-demo/source_code”。 copy code package“Qt5_NMap_CarouselDemo_1.0.tgz”to“~/my-demo/source_code”。 這一步自己采取相應(yīng)的操作完成。 complete this step by yourself in a proper way。 2）解壓代碼包 decompress code package $ cd ~/my-demo/source_code $ tar zxf Qt5_NMap_CarouselDemo_1.0.tgz 編譯QT5程序(compile QT5 application) 提示：我們將使用命令行編譯。 Tips: We compile with commands。 1）進入代碼目錄 enter code directory 提示：我們前面將代碼包“Qt5_NMap_CarouselDemo_1.0.tgz”解壓在“~/my-demo/source_code”。 tips：first we decompress code package“Qt5_NMap_CarouselDemo_1.0.tgz”to“~/my-demo/source_code”。 $ cd ~/my-demo/source_code/Qt5_NMap_CarouselDemo_1.0/ 2）檢查QMake check QMake $ qmake –v 如果執(zhí)行命令后當前終端有輸出“QMake version 3.0”，則表示交叉編譯工具配置正常。 If the current terminal output has “QMake version 3.0” after the execution of command,that means cross compiler is Configured normally.. 否則需要執(zhí)行下面的命令： Otherwise you need to execute the command below： $ source /opt/fsl-imx-x11/3.14.52-1.1.0/environment-setup-cortexa9hf-vfp-neon-poky-linux-gnueabi 3）生成Makefile文件 creat Makefile $ qmake 執(zhí)行qmake后通過ls可以看到多了Makefile文件 you can see an extra Makefile with ls after execution of qmake 4）編譯 compile $ make 5）目標文件 target file
target file $ file Qt5_NMap_CarouselDemo
source file QT5程序的運行需要對應(yīng)的qml文件和content Running QT5 needs the corresponding qml file and content 保存目標可執(zhí)行文件(save target executable file) 由于QT5程序的運行需要對應(yīng)的qml文件和content文件，這里我們?yōu)榱瞬僮鞯暮啙崳苯訉⒄麄�目錄復(fù)制到目標目錄 Because running QT5 program requires qml file and content file, here We copy the entire directory to the target directory for simplicity. $ cp ../Qt5_NMap_CarouselDemo_1.0 ~/my-demo/bin-l31452/ -a 準備編譯 (Prepare for compilation) 安裝軟件包(install software package)說明，Yocto編譯依賴一些軟件包，所以需要在開發(fā)主機上進行安裝。 instruction，Yocto compilation relies on some software package. So you need to Install them on the host。 $ sudo apt-get install gawk wget git-core diffstat unzip texinfo \ gcc-multilib build-essential chrpath socat $ sudo apt-get install libsdl1.2-dev xterm sed cvs subversion \ coreutils texi2html docbook-utils python-pysqlite2 help2man make gcc \ g++ desktop-file-utils libgl1-mesa-dev libglu1-mesa-dev mercurial \ autoconf automake groff curl lzop asciidoc $ sudo apt-get install uboot-mkimage |
