Search for the desired package using Apt-cache

Environment: Ubuntu14.10

I encountered the following problem when compiling the U-boot code:

LD test/dm/built-inch. 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 -: Dtc:command not found./scripts/dtc-version.SH: Line -: Dtc:command not foundYour DTC is too old, please upgrade to DTC1.4or Newermakefile:1298: recipe forTarget'CHECKDTC'failed Make: * * * [CHECKDTC] Error1

You can see from the prompt that the device tree was configured for U-boot, but the tool DTC that compiled the device tree was not found at compile time.

So, what if I want to install the DTC via Apt-get install? If you write DTC directly, the following error occurs:

sudo Install dtcreading Package Lists ... Donebuilding dependency Tree       Locate Package DTC

Obviously there are no packages called DTC.

Workaround:

Search for the name of the package that contains the DTC using the Apt-cache Search command:

 [email protected]:~/work/study/qemu_study/u-boot/ u-boot$ sudo  apt-cache Search dtc[ sudo ] Password  Pengdl:device -tree-compiler-device Tree compiler for   Flat Device treesddtc - Deal with DDTs mailsdtc -xen-soap daemon and scripts To allow Control Panel management for   Xen vmsdtc
     -xen-firewall-small Firewall script for  -dtc-cgi for  Safer hosting environment  

As you can see, the first Device-tree-compiler is the right one for us.
Install this package below:

[Email protected]:~/work/study/qemu_study/u-boot/u-boot$sudoApt-getInstalldevice-tree-compiler Reading Package lists ... Donebuilding Dependency Tree Reading state information ... Donethe following NEW packages 'll be Installed:device-tree-compiler0Upgraded,1Newly installed,0To remove and1Not upgraded. Need to get356KB of archives. After this operation,546KB of additional disk space would be used. Get:1http//mirrors.namecheap.com/ubuntu/utopic/main device-tree-compiler amd64 1.4.0+dfsg-1 [356 KB]Fetched356Kbinch12s (27.7kb/s) Selecting previously unselected package device-tree-compiler. (Reading database ...305587files 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 Mans-db (2.7.0.2-2) ... Processing triggers forDoc-base (0.10.6) ... Processing2Added doc-Base Files ... Registering documents with Scrollkeeper ...

Once the installation is complete, you can find the DTC tool:

which DTC/USR/BIN/DTC

Compile U-boot again:

LD common/built-inch. o CC Drivers/usb/gadget/f_thor.o LD Drivers/usb/gadget/built-inch. O CC lib/DISPLAY_OPTIONS.O LD Lib/built-inch. 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 (possiblyinchA subsequentPatch inchyour series) before sending patches to the mailing list.====================================================

You can see the compilation passed.

Search for the desired package using Apt-cache