Cross compiling for arm platform(cortex M4)

HDF5 Library
1

Hello ,
I am a newbie and trying to cross compile using cmake to generate libs which I can use on a microcontroller platform.(arm cortex m4 based )
I am following this link :
Cross Compiling With CMake — Mastering CMake.
and trying to modify the below toolchain file . Is this the correct way or any other example which I can use. Thanks in advance !

the name of the target operating system

set(CMAKE_SYSTEM_NAME Windows)

which compilers to use for C and C++

set(CMAKE_C_COMPILER i586-mingw32msvc-gcc)
set(CMAKE_CXX_COMPILER i586-mingw32msvc-g++)

where is the target environment located

set(CMAKE_FIND_ROOT_PATH /usr/i586-mingw32msvc
/home/alex/mingw-install)

adjust the default behavior of the FIND_XXX() commands:

search programs in the host environment

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)

search headers and libraries in the target environment

set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

This post says its a tedious task :frowning: : Cross compiling HDF5 clib to arm7 android - #2 by steven
please guide.
Regards,

2

We do have a toolchain file in config/toolchain/aarch64.cmake that you could use as an example.

3

also in the build system what is the default cmake which is being invoked in windows and how it is linked with this command : ctest -S HDF5_Examples.cmake -C Release -V -O test.log ? which all things i have to change to cross compile it with some arm-gcc-* compiler instead of gcc

4

Thanks a lot @byrn i am looking into it.
Regards,