默认编译的头文件目录:
/usr/local/arm/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/lib
默认编译的库文件目录:
/usr/local/arm/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/include/
编译一个.c文件成功了:
arm-linux-gnueabihf-gcc -o jpg2rgb jpg2rgb.c -ljpeg