Cross compiling Libx264 for ARM

本文介绍如何从ftp下载x264快照,并使用特定配置进行跨编译,以生成适用于ARM平台的静态库(libx264.a)及可执行文件(x264)。

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转自: http://www.blogs.soctel.in/cross-compiling-libx264-for-arm/

Download the x264 snapshot from ftp://ftp.videolan.org/pub/x264/snapshots/last_x264.tar.bz2

This will buiild both the library (libx264.a) and the executable (x264)

$ ./configure –host=arm-none-linux-gnueabi –cross-prefix=/opt/toolschain/4.4.3/bin/arm-none-linux-gnueabi- –enable-shared –enable-static –disable-asm  –prefix=/home/soctel/Desktop/armlibs/install_all/

$ make

$ make install

Cross-compiling Parsec benchmark for ARM architecture involves setting up a build environment on your host machine (likely x86 or x64) that can generate code for ARM targets. Here's a general outline of the steps: 1. **Install required tools**: Ensure you have installed a compiler and toolchain that supports ARM, like `gcc-arm-none-eabi` or `clang-arm`. 2. **Set up target environment**: You'll need to configure the toolchain with the correct paths and settings for the ARM target. This may involve creating a separate configuration file or specifying flags when invoking the compiler. ```sh export CC=arm-none-eabi-gcc export CXX=arm-none-eabi-g++ ``` 3. **Download Parsec**: Download the latest version of Parsec, which is a benchmarking suite, and extract it to a suitable location. 4. **Configure Makefile**: If Parsec has a Makefile, modify it to specify the target architecture. Look for lines similar to `CC`, `CFLAGS`, or `LDFLAGS`. Add or update them as needed, using the ARM-specific versions. 5. **Build for ARM**: Run `make clean && make` in the Parsec directory, replacing `make` with the appropriate command for your build system (e.g., `ninja` if you're using Ninja). ```sh make TARGET=arm-linux-gnueabihf ``` 6. **Test on ARM device or emulator**: Copy the generated `.elf` (executable) file to an ARM device or use an emulator to run it. **Related questions:** 1. What specific version of the ARM toolchain do I need? 2. How can I deal with dependencies if they don't have ARM builds available? 3. Are there any libraries or patches I need to include for compatibility with Parsec on ARM?
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