Building on Raspberry Pi 4B

[daniel-rhodin]

Hi,
I have a hard time building libm2k on a Raspberry PI. The error I get is:

~/libm2k/build $ cmake ../
---- Building Python bindings
-- bin= lib= inc=
-- Python_EXECUTABLE /usr/bin/python3.9
---- Building C# bindings
-- Configuring done
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
/home/accordion/libm2k/src/IIO_INCLUDE_DIRS
used as include directory in directory /home/accordion/libm2k/src
IIO_INCLUDE_DIRS
used as include directory in directory /home/accordion/libm2k/bindings/csharp
used as include directory in directory /home/accordion/libm2k/bindings/csharp
used as include directory in directory /home/accordion/libm2k/bindings/csharp
used as include directory in directory /home/accordion/libm2k/bindings/csharp
used as include directory in directory /home/accordion/libm2k/bindings/csharp
used as include directory in directory /home/accordion/libm2k/bindings/csharp
used as include directory in directory /home/accordion/libm2k/bindings/csharp

CMake Error in src/CMakeLists.txt:
Target "libm2k" INTERFACE_INCLUDE_DIRECTORIES property contains path:

"/home/accordion/libm2k/src/IIO_INCLUDE_DIRS-NOTFOUND"

which is prefixed in the source directory.

I have successfully built and installed libiio and I can't figure out what I should do now to get it to build?

I have searched for an already made package for Rpi4 but it doesn't seem to exist.
Did anyone get libm2k to work on a Raspberry?
Thanks,
Daniel

[Adrian-Stanea]

Hi Daniel,

Based on the error message you've provided, here are some steps you can take to resolve the issue:

1. Ensure you are building a compatible version of libiio:

• The current version of libm2k is compatible with libiio v0.26. Make sure your libiio build was done from that specific tag.

2. Ensure libiio is installed in a system-visible path:

• When you run make install for the libiio build, ensure it's installing to a directory that's included in your system's library and include paths.
  After installation, update the library cache: sudo ldconfig.

3. Building C# bindings:

• Your CMake output indicates that you are attempting to build the C# bindings.
• If this is the case, ensure that libiio is also built with C# support.
• Otherwise, make sure to clean the libm2k build directory and then run cmake again to configure the build.