CentOS 7 ARM Release: Support Raspberry Pi 2/Banana pie/cubietruckKaranbir Singh from the CentOS team is pleased to announce that CentOS 7 Linux for the ARM hardware architecture has been officially released. In addition to Twitter's brief announcement, it did not comment on the official website about the new features and optimizations of the ported version. However, based on the image name, we know that it
keyCvdestroywindow ("image"); // destroy the windowCvreleaseimage ( IMG );
Printf ("OK! \ N ");
Return 0;}
If a large number of undefined reference errors occur, check whether the compiler format is correct: GCC test. c-o Test-I/usr/include/opencv-L/usr/lib-lml-lcvaux-lhighgui-LCV-lcxcore. Test it on a PC first, note that the include directory and lib directory are the opencv installed on my Linux 386 system, not the transplanted arm version. If you
I. Development Environment
Operating System: fedora14
Opencv version: 2.0
Qt version: 4.7
Arm: mini6410
Cross-compilation tool: arm-linux-gcc-4.5.1
Ii. installation and configuration
The installation of the Linux system, the installation of cross QT-creator, and the installation of cross-compilation tools are basically no problem on the Internet, and can be used after testing. Here QT-creator installation
Create an arm cross-compiling environment in ubuntu10.04
In Linux, the overall process of creating the entire arm cross-compiling environment is as follows:
1. Download the source file
2. Create a compiling directory in Linux and set Environment Variables
3. Create a kernel header file
4. binutils)
5. Create an initial Compiler (bootstrap GCC)
6. Create a glibc Library
7. Create a full set of compilers (fu
Test the achievements of predecessors, combined with their own practice, arm-linux-gcc-4.4.3.tar.gz download Address: http://ishare.iask.sina.com.cn/f/13836544.html?from=like
I use the system is Ubuntu12.04, but as long as Ubuntu should be able to install this step.
1. Extract Files
Extract the Tar zxvf arm-linux-gcc-4.4.3.tar.gz-c/(directly after decompression,-c/will let the extracted files automati
Cortex-A series Processor
Arm cortex-a series of application processors for complex operating systems and user applications. The cortex-A series Processors support arm, thumb, and thumb-2 instruction sets.
Arm Cortex-A9 ProcessorIt is a high-performance, low-energy arm macro unit with a L1 high-speed cache subsystem
Download the source code of GDB 7.3.1 from http://www.gnu.org/software/gdb.
Copy to Linux virtual machine, decompress to gdb-7.3.1 directory, enter this directory
[Root @ localhost gdb-7.3.1] #./configure -- Host = arm-Linux -- target = arm-Linux
Bytes -------------------------------------------------------------------------------------
Make has the following error prompt:
Checking for library containing wa
. This is actually tslib.14. I don't know why it became 1.0. It's not very difficult to compile and how to configure it, please read another document, "tslib of arm-Linux". Of course, this document may not help you. You need to use your talents, you may need to read the source code of the touch screen driver in the kernel. In my Development Kit, the touch-screen controller uses the active converter of the CPU itself, and the driver in the kernel is co
Installing the cross-compiler (ARM-LINUX-GCC) and the Integrated development environment (eclipse)
1. Install ARM-LINUX-GCC, whether you are downloading from the Internet, or the development of the CD inside, can be, the version is not limited, my is arm-linux-gcc-4.3.2.
Enter ARM-LINUX-GCC installation package direc
Believe it or not, just grab a man and ask him if he knows the CPU, I think his answer will be sure, but if you ask him again do you know the structure of arm and X86? What is the difference between the two? The vast majority of people must be a face. Today's small make up to take you in-depth understanding of the CPU of these two major architectures: arm and X86. Go out and put X on it!# # Relive what the
Step by step, create a crosstoolchain based on ARM + Linux-Linux general technology-Linux programming and kernel information. The following is a detailed description. Disclaimer: This article is based on the reference of online materials, and is based on Liang yuanen's "How to Build a cross-compiling environment for Embedded Development. I have explained in detail the problems I encountered during the establishment process. This article will be update
/http://releases.linaro.org/components/toolchain/binaries/
https://www.mentor.com/https://www.mentor.com/embedded-software/sourcery-tools/sourcery-codebench/editions/lite-edition/
http://www.veryarm.com/arm-none-linux-gnueabi-gcc
Installation of uncompressed version (Installation environment Ubuntu)
3.1 Download decompression version
Download site: HTTP://WWW.VERYARM.COM/ARM-NONE-LINUX-GNUEABI-GCC
3.2 Ente
The first part of Linux under the ARM assembly syntaxAlthough it is convenient to write programs in C or C + + under Linux, the Assembly source program is used for the most basic initialization of the system, such as initializing the stack pointer, setting the page table, and manipulating arm's coprocessor. After initialization is completed, you can jump to C code execution. It should be noted that the GNU assembler follows the ATT assembly syntax and
Configure arm-Linux-GCC on the basis of the installation on the Linux platform to make it work normally.
I. Preparations before installation
1. Download and install arm-Linux-gcc
The version of the arm-linux-gcc-4.2.1 IN THE RELEASE.
The following is the download link officially provided by arm: http://www.codesourcery
ARM is a well-known enterprise in the microprocessor industry. It has designed a large number of high-performance, low-cost, and low-energy-consuming Proteus processors, related technologies and software. The technology features high performance, low cost, and low energy consumption. It is applicable to multiple fields, such as embedded control, consumption/education multimedia, DSP, and mobile applications.
ARM
Learn embedded well, you have to do more hands-on, more practice. To get started, configure your own development environment and migrate the kernel. The development environment does not say that the porting kernel will have to compile the kernel first. You have to have a compiler. Because the architecture of arm CPUs is not the same as x86. The usual practice is to use the arm cross compiler in the x86 deve
MPlayer 1.0 has brought most of the decoding libraries, such as FFmpeg, But the audio library that comes with it is very bad in s3c2440. It's good to use Libmad. So the simplest transplant for mplayer in Arm-linux only needs to be ported. The character interface is played after the transplant.
However, the full version requires the following libraries. If subtitles support is required. The FreeType library needs to be ported. Support JPG skins need li
Directory structureE2fsprogs:/root/ARM-QT/e2fsprogsJpeg-6b:/root/ARM-QT/jpeg-6bQt-2.3.10:/root/ARM-QT/qt-2.3.10Qt-2.3.2:/root/ARM-QT/qt-2.3.2 // PC version QT, not usedQtopia-free-2.1.1:/root/ARM-QT/qtopia-free-2.1.1Qt-x11-free-3.3.8:/root/
With the growing number of mobile device platforms, and even the momentum to replace the desktop platform, the word "arm" is increasingly appearing in people's eyes, especially on mobile phones or tablet processors, but never see arm's processor, but "the adoption of ARM's latest architecture" processor. In fact, ARM (adanced RISC machines) is not only a generic term for a processor, but also a company name
ARM platform: Beaglebone Black
Compiling platform: ubuntu16.04
Cross-compilation tool: ARM-LINUX-GNUEABIHF
QT Source: qt-everywhere-opensource-src-5.8.0.tar.gz
Set ARM-LINUX-GNUEABIHF path
~$ Vim ~/.BASHRC
Add the following line to the file
Export path= $PATH: ~/gcc-linaro-4.9-arm-linux-gnueabihf/bin
Save and exi
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