Questions about cross-compilation

[nyanmisaka]

Questions about cross-compilation

[nyanmisaka]

It seems to be an environment variable or configure setting issue. Please refer to the official documentation, as well as BtbN/FFmpeg-Builds to learn how to cross-compile FFmpeg correctly.

[jian263994241]

sudo apt install pkg-config

[jacobbtbailey]

@Kevin111369 You can try something like this. I tested on WSL2 (Ubuntu 22.04).

PKG_CONFIG_SYSROOT_DIR=/root/mtea-tech/rk3568l/buildroot/output/rockchip_rk3568/host/aarch64-buildroot-linux-gnu/sysroot \
    PKG_CONFIG_PATH=/root/mtea-tech/rk3568l/buildroot/output/rockchip_rk3568/host/aarch64-buildroot-linux-gnu/sysroot/usr/lib/pkgconfig \
    ./configure --prefix=prefix --enable-gpl --enable-version3 --enable-libdrm --enable-rkmpp --enable-rkrga \
    --cross-prefix=/root/mtea-tech/rk3588l/buildroot/output/rockchip_rk3588/host/bin/aarch64-linux- \
    --arch=aarch64 --target-os=linux --enable-cross-compile --target-os=linux --disable-shared --pkg-config=pkg-config

[Kevin111369]

@jacobbtbailey I added the paths to libdrm and mpp when configuring configure, and then successfully compiled ffmpeg-rockchip. The compilation script is as follows:

#!/bin/bash

# 设置路径变量
LIBDRM_PATH="/home/rk/linux/3rdparty/output/libdrm"
MPP_PATH="/home/rk/linux/3rdparty/output/mpp"
RGA_PATH="/home/rk/linux/3rdparty/output/librga"
TOOLCHAIN_PATH="/home/rk/linux/rk3588_sdk/prebuilts/gcc/linux-x86/aarch64/gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-"
PREFIX_PATH="/home/rk/linux/3rdparty/output/ffmpeg"

# 设置 PKG_CONFIG_PATH
export PKG_CONFIG_PATH="$LIBDRM_PATH/lib/pkgconfig:$MPP_PATH/lib/pkgconfig:$PKG_CONFIG_PATH"

# 运行 configure 脚本
./configure \
--enable-shared \
--enable-static \
--prefix=$PREFIX_PATH \
--enable-cross-compile \
--cross-prefix=$TOOLCHAIN_PATH \
--arch=aarch64 \
--target-os=linux \
--enable-gpl \
--enable-version3 \
--enable-libdrm \
--enable-rkmpp \
--extra-cflags="-I$RGA_PATH/include" \
--extra-ldflags="-L$RGA_PATH/lib" \
--enable-rkrga \
--disable-stripping \
--pkg-config="pkg-config --static"

Thank you for your reply！