Cross compilation are failing for ARM64 platform

[koratshail]

I am trying to build a Kinesis video streams producer sdk cpp package for my ARM64 platform.

all attempts to build this package with the dependencies failed.
First of all, the target platform needed to be specified explicitly as shown below:
$(pkg)_CONF_OPTS = -DBUILD_GSTREAMER_PLUGIN=ON -DBUILD_OPENSSL_PLATFORM=linux-aarch64 -DBUILD_LOG4CPLUS_HOST=arm-linux

The problem that couldn't be solved was how to build libcurl: the compilation failed because one source couldn't find the <openssl/opensslconf.h> include file.
Providing the file's location using an environment variable, as export OPENSSL_INCLUDE_DIR = $(@d)/open-source/local/include
made the compilations pass, but failed at the linking stage, due to wrong file format, because the files were compiled for the build host platform, not the target one.

Following are the compilation log messages:
/home/ambadocker/dev/h32/output/h32_ambalink_defconfig/build/aws_kinesis_kvs/open-source/local/libcurl/build/src/project_libcurl/lib/md4.c:31:10: fatal error: openssl/opensslconf.h: No such file or directory 31 | #include <openssl/opensslconf.h> | ^~~~~~~~~~~~~~~~~~~~~~~ compilation terminated. lib/CMakeFiles/libcurl.dir/build.make:598: recipe for target 'lib/CMakeFiles/libcurl.dir/md4.c.o' failed make[7]: *** [lib/CMakeFiles/libcurl.dir/md4.c.o] Error 1 make[7]: Leaving directory '/home/ambadocker/dev/h32/output/h32_ambalink_defconfig/build/aws_kinesis_kvs/open-source/local/libcurl/build/src/project_libcurl-build' CMakeFiles/Makefile2:1572: recipe for target 'lib/CMakeFiles/libcurl.dir/all' failed make[6]: Leaving directory '/home/ambadocker/dev/h32/output/h32_ambalink_defconfig/build/aws_kinesis_kvs/open-source/local/libcurl/build/src/project_libcurl-build' make[6]: *** [lib/CMakeFiles/libcurl.dir/all] Error 2 Makefile:143: recipe for target 'all' failed make[5]: *** [all] Error 2 make[5]: Leaving directory '/home/ambadocker/dev/h32/output/h32_ambalink_defconfig/build/aws_kinesis_kvs/open-source/local/libcurl/build/src/project_libcurl-build' CMakeFiles/project_libcurl.dir/build.make:115: recipe for target 'build/src/project_libcurl-stamp/project_libcurl-build' failed make[4]: *** [build/src/project_libcurl-stamp/project_libcurl-build] Error 2 make[4]: Leaving directory '/home/ambadocker/dev/h32/output/h32_ambalink_defconfig/build/aws_kinesis_kvs/open-source/local/libcurl' CMakeFiles/Makefile2:78: recipe for target 'CMakeFiles/project_libcurl.dir/all' failed make[3]: *** [CMakeFiles/project_libcurl.dir/all] Error 2 make[3]: Leaving directory '/home/ambadocker/dev/h32/output/h32_ambalink_defconfig/build/aws_kinesis_kvs/open-source/local/libcurl' Makefile:86: recipe for target 'all' failed make[2]: *** [all] Error 2 make[2]: Leaving directory '/home/ambadocker/dev/h32/output/h32_ambalink_defconfig/build/aws_kinesis_kvs/open-source/local/libcurl' CMake Error at dependency/libkvscproducer/kvscproducer-src/CMake/Utilities.cmake:93 (message): CMake step for libcurl failed: 2 Call Stack (most recent call first): dependency/libkvscproducer/kvscproducer-src/CMakeLists.txt:95 (build_dependency)

Can somebody explain how to cross-compile this SDK for the ARM64 platform with all dependencies like curl, OpenSSL etc?

[sirknightj]

Duplicate of #1071.