什么原因？？？
[root@ee3420b3f6d7 ffmpeg]# ./configure --enable-cross-compile --cross-prefix=aarch64-linux-gnu- --arch=aarch64 --target-os=linux[root@ee3420b3f6d7 ffmpeg]# time make -j4 -w real 2m49.231suser 10m14.355ssys 0m33.228s[root@ee3420b3f6d7 ffmpeg]# cat /proc/cpuinfo | grep "model name"model name : Intel(R) Xeon(R) CPU E3-1220 v3 @ 3.10GHzmodel name : Intel(R) Xeon(R) CPU E3-1220 v3 @ 3.10GHzmodel name : Intel(R) Xeon(R) CPU E3-1220 v3 @ 3.10GHzmodel name : Intel(R) Xeon(R) CPU E3-1220 v3 @ 3.10GHz[root@ee3420b3f6d7 ffmpeg]# readelf -h ffmpegELF Header: Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 Class: ELF64 Data: 2's complement, little endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: EXEC (Executable file) Machine: AArch64 Version: 0x1 Entry point address: 0x47ff68 Start of program headers: 64 (bytes into file) Start of section headers: 15969264 (bytes into file) Flags: 0x0 Size of this header: 64 (bytes) Size of program headers: 56 (bytes) Number of program headers: 7 Size of section headers: 64 (bytes) Number of section headers: 28 Section header string table index: 27[root@ee3420b3f6d7 ffmpeg]# // 交叉编译成功
--arch=arm 改 --arch=arm64编译通过
编译选项
./configure --cross-prefix=/.env/gcc-linaro-6.5.0-2018.12-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- --enable-cross-compile --target-os=linux --cc=/.env/gcc-linaro-6.5.0-2018.12-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc --arch=arm --cpu=Cortex-A53 --prefix=/Project/ffmpeg --disable-x86asm --disable-avdevice --disable-encoders --disable-filters --enable-shared --enable-static
x3平台
目前测试，./configure关掉和arm有关指令，编译是可以通过的，交叉编译工具不支持arm指令加速？