环境： Ubuntu14.10
我在编译u-boot代码的时候遇到了如下问题：
LD test/dm/built-in.o CC examples/standalone/stubs.o LD examples/standalone/libstubs.o CC examples/standalone/hello_world.o LD examples/standalone/hello_world OBJCOPY examples/standalone/hello_world.srec OBJCOPY examples/standalone/hello_world.bin LDS u-boot.lds LD u-boot OBJCOPY u-boot.srec OBJCOPY u-boot.bin CFG u-boot.cfg ./scripts/dtc-version.sh: line 17: dtc: command not found ./scripts/dtc-version.sh: line 18: dtc: command not found *** Your dtc is too old, please upgrade to dtc 1.4 or newer Makefile:1298: recipe for target ‘checkdtc‘ failed make: *** [checkdtc] Error 1
从提示信息可以看到是因为u-boot配置了设备树，但是在编译的时候找不到编译设备树的工具dtc。
那么，如果我想通过apt-get install 来安装dtc的话，又该安装那个软件包呢？如果直接写dtc，会出现如下错误：
[email protected]:~/work/study/qemu_study/u-boot/u-boot$ sudo apt-get install dtc Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package dtc
显然没有叫做dtc的软件包。
解决办法：
使用apt-cache search命令，搜索包含有dtc的软件包的名字：
[email protected]:~/work/study/qemu_study/u-boot/u-boot$ sudo apt-cache search dtc [sudo] password for pengdl: device-tree-compiler - Device Tree Compiler for Flat Device Trees ddtc - Deal with ddts mails dtc-xen - SOAP daemon and scripts to allow control panel management for Xen VMs dtc-xen-firewall - small firewall script for your dom0 sbox-dtc - CGI chroot wrapper script for safer hosting environment
可以看到，第一个 device-tree-compiler 最合适，正是我们要找的。
下面安装这个软件包：
[email protected]:~/work/study/qemu_study/u-boot/u-boot$ sudo apt-get install device-tree-compiler Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: device-tree-compiler 0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded. Need to get 356 kB of archives. After this operation, 546 kB of additional disk space will be used. Get:1 http://mirrors.namecheap.com/ubuntu/ utopic/main device-tree-compiler amd64 1.4.0+dfsg-1 [356 kB] Fetched 356 kB in 12s (27.7 kB/s) Selecting previously unselected package device-tree-compiler. (Reading database ... 305587 files and directories currently installed.) Preparing to unpack .../device-tree-compiler_1.4.0+dfsg-1_amd64.deb ... Unpacking device-tree-compiler (1.4.0+dfsg-1) ... Processing triggers for man-db (2.7.0.2-2) ... Processing triggers for doc-base (0.10.6) ... Processing 2 added doc-base files... Registering documents with scrollkeeper...
安装完后，就可以找到dtc这个工具了：
[email protected]:~/work/study/qemu_study/u-boot/u-boot$ which dtc /usr/bin/dtc
再次编译u-boot：
LD common/built-in.o CC drivers/usb/gadget/f_thor.o LD drivers/usb/gadget/built-in.o CC lib/display_options.o LD lib/built-in.o LD u-boot OBJCOPY u-boot.srec OBJCOPY u-boot.bin DTC arch/arm/dts/exynos4210-origen.dtb DTC arch/arm/dts/exynos4210-smdkv310.dtb DTC arch/arm/dts/exynos4210-universal_c210.dtb DTC arch/arm/dts/exynos4210-trats.dtb DTC arch/arm/dts/exynos4412-trats2.dtb DTC arch/arm/dts/exynos4412-odroid.dtb DTC arch/arm/dts/exynos4412-tiny4412.dtb SHIPPED dts/dt.dtb COPY u-boot.dtb CAT u-boot-dtb.bin ===================== WARNING ====================== This board uses CONFIG_DM_I2C_COMPAT. Please remove (possibly in a subsequent patch in your series) before sending patches to the mailing list. ====================================================
可以看到编译通过。
时间： 2024-10-14 09:18:00