MbedTLS 3.6.5 Linux build with cmake for eosal library.
=======================================================
eosal comes with readily built mbedTLS libraries and headers for 64 bit linux (AMD64).
If it is acceptable to use precompiled mbedTLS, there is no need to do anything to
enable TLS.  
This instruction can be used as reference for other hardware or to update mbedTLS version.   

The 64 bit .a library files are in /coderoot/eosal/dependencies/linux/linux_generic_amd64_gcc
directory.

Corresponding include headers are in /coderoot/eosal/dependencies/linux/include/mbedtls directory.

In Linux, there are three libraries for mbedTLS components: libmbedtls.a libmbedx509.a libmbedcrypto.a. 
Debug builds end with extra 'd', for example libmbedtls.a is release build while libmbedtlsd.a is
debug build. Compile with -lmbedtls -lmbedx509 -lmbedcrypto, order of these libraries is important.

Install build dependencies.

::

		sudo apt update
		sudo apt install build-essential cmake git

Uncompress source code. I uncompressed mbedtls-3.6.5.tar.bz2 to /home/iocafe/mbedtls/mbedtls-3.6.5 
(now this is the MbedTLS source root folder). 

Run cmake and build/install with GNU make. I created directory /home/iocafe/mbedtls/build 
to be used as build directory:
	
:: 
	
		cd /home/iocafe/mbedtls
		mkdir build
		cd build
		cmake -DCMAKE_BUILD_TYPE=Release -DUSE_STATIC_MBEDTLS_LIBRARY=On -DUSE_SHARED_MBEDTLS_LIBRARY=Off -DCMAKE_POSITION_INDEPENDENT_CODE=On ../mbedtls-3.6.5
		make

		cd /home/iocafe/mbedtls
		mkdir buildd
		cd buildd
		cmake -DCMAKE_BUILD_TYPE=Debug -DUSE_STATIC_MBEDTLS_LIBRARY=On -DUSE_SHARED_MBEDTLS_LIBRARY=Off -DCMAKE_POSITION_INDEPENDENT_CODE=On ../mbedtls-3.6.5
		make

Optional, install to operating sysem and update library cache. This allows other project to use mbedTLS just built.

::

		cd /home/iocafe/mbedtls/build
		sudo make install
		sudo ldconfig

Copy libraries to use (for 64 bit PC linux computer)
 
- Copy libmbedtls.a, libmbedcrypto.a, and libmbedx509.a
  from /home/iocafe/mbedtls/build/library 
  to /coderoot/eosal/dependencies/linux/linux_generic_amd64_gcc.
  This is the release build.
	
- Rename libmbedtls.a, libmbedcrypto.a, and libmbedx509.a
  in /home/iocafe/mbedtls/buildd/library debug build directory 
  to libmbedtlsd.a, libmbedcryptod.a, and libmbedx509d.a
  Then copy the renamed files 
  to /coderoot/eosal/dependencies/linux/linux_generic_amd64_gcc.

260222, updated 28.2.2026/pekka