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Questions about cross-compilation #37

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opened 2025-12-23 10:31:21 +01:00 by backuprepo · 7 comments
backuprepo commented 2025-12-23 10:31:21 +01:00
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Originally created by @Kevin111369 on GitHub (Mar 26, 2024).

Cross-compilation Error for ffmpeg-rockchip

libdrm and rockchip_mpp pkg-config Not Found

Build files for mpp, rga, and drm have been successfully generated through cross-compilation. Using the following commands, pkg-config files have been imported, and pkg-config information has been successfully queried, as shown below:

rk@rk-VirtualBox:~/linux/ffmpeg-rockchip-master$ pkg-config --modversion libdrm
2.4.107
rk@rk-VirtualBox:~/linux/ffmpeg-rockchip-master$ pkg-config --modversion rockchip_mpp
1.3.8

Then, attempting to compile ffmpeg with the following command:

./configure \
--enable-shared \
--enable-static \
--prefix=$PWD/_install \
--enable-cross-compile \
--cross-prefix=/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- \
--arch=aarch64 \
--target-os=linux \
--extra-cflags="-I/home/rk/linux/airockchip/librga/installed/include;-I/home/rk/linux/airockchip/mpp/installed/include;-I/home/rk/linux/libdrm-2.4.107/install/include" \
--extra-ldflags="-L/home/k/linux/airockchip/librga/installed/lib;-L/home/rk/linux/airockchip/mpp/installed/lib;-L/home/rk/linux/libdrm-2.4.107/install/lib" \
--enable-gpl \
--enable-version3 \
--enable-libdrm \
--enable-rkmpp \
--enable-rkrga \
--disable-stripping

Encountering the following errors:

ERROR: libdrm not found using pkg-config
ERROR: rockchip_mpp not found using pkg-config
Originally created by @Kevin111369 on GitHub (Mar 26, 2024). # Cross-compilation Error for ffmpeg-rockchip ## libdrm and rockchip_mpp pkg-config Not Found Build files for mpp, rga, and drm have been successfully generated through cross-compilation. Using the following commands, pkg-config files have been imported, and pkg-config information has been successfully queried, as shown below: ```bash rk@rk-VirtualBox:~/linux/ffmpeg-rockchip-master$ pkg-config --modversion libdrm 2.4.107 rk@rk-VirtualBox:~/linux/ffmpeg-rockchip-master$ pkg-config --modversion rockchip_mpp 1.3.8 ``` Then, attempting to compile ffmpeg with the following command: ```bash ./configure \ --enable-shared \ --enable-static \ --prefix=$PWD/_install \ --enable-cross-compile \ --cross-prefix=/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- \ --arch=aarch64 \ --target-os=linux \ --extra-cflags="-I/home/rk/linux/airockchip/librga/installed/include;-I/home/rk/linux/airockchip/mpp/installed/include;-I/home/rk/linux/libdrm-2.4.107/install/include" \ --extra-ldflags="-L/home/k/linux/airockchip/librga/installed/lib;-L/home/rk/linux/airockchip/mpp/installed/lib;-L/home/rk/linux/libdrm-2.4.107/install/lib" \ --enable-gpl \ --enable-version3 \ --enable-libdrm \ --enable-rkmpp \ --enable-rkrga \ --disable-stripping ``` Encountering the following errors: ```bash ERROR: libdrm not found using pkg-config ERROR: rockchip_mpp not found using pkg-config ```
backuprepo 2025-12-23 10:31:21 +01:00
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backuprepo commented 2025-12-23 10:31:24 +01:00
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@nyanmisaka commented on GitHub (Mar 26, 2024):

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.

@nyanmisaka commented on GitHub (Mar 26, 2024): It seems to be an environment variable or configure setting issue. Please refer to the [official documentation](https://trac.ffmpeg.org/wiki/CompilationGuide/RaspberryPi), as well as [BtbN/FFmpeg-Builds](https://github.com/BtbN/FFmpeg-Builds) to learn how to cross-compile FFmpeg correctly.
backuprepo commented 2025-12-23 10:31:24 +01:00
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@jian263994241 commented on GitHub (Mar 27, 2024):

sudo apt install pkg-config

@jian263994241 commented on GitHub (Mar 27, 2024): sudo apt install pkg-config
backuprepo commented 2025-12-23 10:31:25 +01:00
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@jacobbtbailey commented on GitHub (Apr 3, 2024):

@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
@jacobbtbailey commented on GitHub (Apr 3, 2024): @Kevin111369 You can try something like this. I tested on WSL2 (Ubuntu 22.04). ```bash 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 ```
backuprepo commented 2025-12-23 10:31:25 +01:00
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@Kevin111369 commented on GitHub (Apr 3, 2024):

@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！

@Kevin111369 commented on GitHub (Apr 3, 2024): @jacobbtbailey I added the paths to libdrm and mpp when configuring configure, and then successfully compiled ffmpeg-rockchip. The compilation script is as follows: ```bash #!/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！
backuprepo commented 2025-12-23 10:31:25 +01:00
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@zjd1988 commented on GitHub (Jun 27, 2024):

@Kevin111369 will you post all the build script (contain rkmpp and libdrm cross compile steps)

@zjd1988 commented on GitHub (Jun 27, 2024): @Kevin111369 will you post all the build script (contain rkmpp and libdrm cross compile steps)
backuprepo commented 2025-12-23 10:31:26 +01:00
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@Kevin111369 commented on GitHub (Jun 27, 2024):

@Kevin111369 will you post all the build script (contain rkmpp and libdrm cross compile steps)

Sorry, I won't post these scripts, because I didn't use ffmpeg-rockchip in video development, but used ffmpeg+mpp

@Kevin111369 commented on GitHub (Jun 27, 2024): > @Kevin111369 will you post all the build script (contain rkmpp and libdrm cross compile steps) Sorry, I won't post these scripts, because I didn't use ffmpeg-rockchip in video development, but used ffmpeg+mpp
backuprepo commented 2025-12-23 10:31:26 +01:00
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@zjd1988 commented on GitHub (Jun 27, 2024):

@Kevin111369 Thanks for your reply. Did you cross compile rkmpp and libdrm, can you provide steps?

@zjd1988 commented on GitHub (Jun 27, 2024): @Kevin111369 Thanks for your reply. Did you cross compile rkmpp and libdrm, can you provide steps?
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