Cross-Compilation on WSL Ubuntu24.04 for i.Mx8M Mini / aarch64

[kkharse-cgi]

I am using the "amazon-kinesis-video-streams-webrtc-sdk-c" trying to cross-compile it for aarch64, following changes are done before cross-compilation.

following parameters are set in CMakeList.txt, All the pre-requisites are already installed.

SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_SYSTEM_PROCESSOR aarch64)

SET(CMAKE_C_COMPILER aarch64-linux-gnu-gcc)
SET(CMAKE_CXX_COMPILER aarch64-linux-gnu-g++)

---

Also, Above content is added to file "CMake/Toolchain-aarch64.cmake"

Compiling using below command: (There are other commands but let's first discuss the simple command. another option I tried are providing the path to OpenSSL and SRTP (library, include, etc.)
cmake .. -DCMAKE_TOOLCHAIN_FILE=../CMake/Toolchain-aarch64.cmake

---

Getting the below issue:

---

[ 66%] Performing build step for 'project_libopenssl'
aarch64-linux-gnu-gcc: error: unrecognized command-line option '-m64'
make[4]: *** [Makefile:707: apps/app_rand.o] Error 1
make[3]: *** [Makefile:174: all] Error 2
gmake[2]: *** [CMakeFiles/project_libopenssl.dir/build.make:87: build/src/project_libopenssl-stamp/project_libopenssl-build] Error 2
gmake[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/project_libopenssl.dir/all] Error 2
gmake: *** [Makefile:91: all] Error 2
CMake Error at CMake/Utilities.cmake:75 (message):
  CMake step for libopenssl failed: 2
Call Stack (most recent call first):
  CMakeLists.txt:170 (build_dependency)

[kkharse-cgi]

In continuation to above issue, Adding few more dependency in cmake command.

Command:
cmake .. -DCMAKE_TOOLCHAIN_FILE=../CMake/Toolchain-aarch64.cmake -DBUILD_STATIC_LIBS=TRUE -DBUILD_OPENSSL_PLATFORM=linux-aarch64 -DBUILD_LIBSRTP_HOST_PLATFORM=ON -DBUILD_LIBSRTP_DESTINATION_PLATFORM=ON -DBUILD_LIBSRTP_HOST_PLATFORM=x86_64-unknown-linux-gnu -DBUILD_LIBSRTP_DESTINATION_PLATFORM=arm-unknown-linux-uclibcgnueabi

Error Logs:
-- Build files have been written to: /home/kkharse/MW_Repos/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/libkvsCommonLws/build/src/libkvsCommonLws-download-build
[ 66%] Performing build step for 'libkvsCommonLws-download'
[ 7%] Building C object CMakeFiles/kvsCommonLws.dir/src/source/Common/Auth.c.o
In file included from /home/kkharse/MW_Repos/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/libkvsCommonLws/build/src/libkvsCommonLws-download/src/source/Common/Include_i.h:47,
from /home/kkharse/MW_Repos/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/libkvsCommonLws/build/src/libkvsCommonLws-download/src/source/Common/Auth.c:5:
/home/kkharse/MW_Repos/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/libkvsCommonLws/build/src/libkvsCommonLws-download/src/include/com/amazonaws/kinesis/video/common/Include.h:16:10: fatal error: com/amazonaws/kinesis/video/client/Include.h: No such file or directory
16 | #include <com/amazonaws/kinesis/video/client/Include.h>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
gmake[5]: *** [CMakeFiles/kvsCommonLws.dir/build.make:76: CMakeFiles/kvsCommonLws.dir/src/source/Common/Auth.c.o] Error 1
gmake[4]: *** [CMakeFiles/Makefile2:83: CMakeFiles/kvsCommonLws.dir/all] Error 2
gmake[3]: *** [Makefile:136: all] Error 2
gmake[2]: *** [CMakeFiles/libkvsCommonLws-download.dir/build.make:87: build/src/libkvsCommonLws-download-stamp/libkvsCommonLws-download-build] Error 2
gmake[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/libkvsCommonLws-download.dir/all] Error 2
gmake: *** [Makefile:91: all] Error 2
CMake Error at CMake/Utilities.cmake:75 (message):
CMake step for libkvsCommonLws failed: 2
Call Stack (most recent call first):
CMakeLists.txt:265 (build_dependency)

-- Configuring incomplete, errors occurred!

**Additional Comment: **
The file in open-source directory under include path the listed path is not present.
com/amazonaws/kinesis/video/client/Include.h

[kkharse-cgi]

I am able to Cross-compile C SDK using the Ubuntu 20.04 the above issue is resolved.

[kkharse-cgi]

Facing issue in compiling G-streamer examples.
All the required packages are already installed on the host system.

Packages installed:
sudo apt-get install libgstreamer-plugins-base1.0-dev libgstreamer-plugins-good1.0-dev libgstreamer-plugins-bad1.0-dev
sudo apt-get install libglib2.0-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev

Error Encountered:
CMake command is executed successfully with all the dependencies.
But getting dependency issues in finding the GStreamer library.

**System: ** Ubuntu 20.04

**Exported Variables: **
export CC=aarch64-linux-gnu-gcc
export CXX=aarch64-linux-gnu-g++
export LIBRARY_PATH=/usr/lib/aarch64-linux-gnu
export PKG_CONFIG_PATH=/usr/lib/aarch64-linux-gnu/pkgconfig
export LD_LIBRARY_PATH=/usr/lib/aarch64-linux-gnu
sudo sh -c 'echo 0 > /proc/sys/net/ipv6/conf/all/disable_ipv6'

**commands used for compilation: **
cmake .. -DBUILD_STATIC_LIBS=TRUE -DBUILD_OPENSSL=TRUE -DBUILD_OPENSSL_PLATFORM=linux-aarch64 -DBUILD_LIBSRTP_HOST_PLATFORM=x86_64-unknown-linux-gnu -DBUILD_LIBSRTP_DESTINATION_PLATFORM=arm-unknown-linux-uclibcgnueabi

Success CMake Logs:
[100%] Completed 'libkvsCommonLws-download'
[100%] Built target libkvsCommonLws-download
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")
-- Checking for module 'libwebsockets'
-- Found libwebsockets, version 4.3.3-v4.3.3
OPEN_SRC_INSTALL_PREFIX=/home/kk/amazon-kinesis-video-streams-webrtc-sdk-c/open-source
-- Checking for module 'gstreamer-1.0'
-- Found gstreamer-1.0, version 1.16.3
-- Checking for module 'glib-2.0'
-- Found glib-2.0, version 2.64.6
-- Checking for module 'gstreamer-app-1.0'
-- Found gstreamer-app-1.0, version 1.16.3
-- Checking for module 'gobject-2.0'
-- Found gobject-2.0, version 2.64.6
gstreamer found. Will build gstreamer samples
-- Configuring done
-- Generating done
CMake Warning:
Manually-specified variables were not used by the project:

BUILD_OPENSSL

-- Build files have been written to: /home/kk/amazon-kinesis-video-streams-webrtc-sdk-c/build

**Error Logs: **
[ 77%] Building C object samples/CMakeFiles/kvsWebrtcClientViewerGstSample.dir/GstAudioVideoReceiver.c.o
[ 79%] Building C object samples/CMakeFiles/kvsWebrtcClientViewerGstSample.dir/kvsWebRTCClientViewerGstSample.c.o
[ 80%] Linking C executable kvsWebrtcClientViewerGstSample
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lglib-2.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lgstreamer-1.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lgobject-2.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lglib-2.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lgstapp-1.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lgstbase-1.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lgstreamer-1.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lgobject-2.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lglib-2.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lgobject-2.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lglib-2.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lgstapp-1.0
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: cannot find -lgstbase-1.0
collect2: error: ld returned 1 exit status
make[2]: *** [samples/CMakeFiles/kvsWebrtcClientViewerGstSample.dir/build.make:120: samples/kvsWebrtcClientViewerGstSample] Error 1
make[1]: *** [CMakeFiles/Makefile2:161: samples/CMakeFiles/kvsWebrtcClientViewerGstSample.dir/all] Error 2
make: *** [Makefile:130: all] Error 2
kk@N901003:~/amazon-kinesis-video-streams-webrtc-sdk-c/build$