Packaging

Building CMSIS_5 Math libraries

CMSIS_5 doesn't come with prebuilt .lib files, so we will need to build them ourselves. The build process is a little convoluted right now, but fairly straightforward.

Start by creating a build folder inside the CMSIS_5/CMSIS/DSP folder. In the same DSP folder, create a CMakeLists.txt file with the following content:

cmake_minimum_required (VERSION 3.14)

# Define the project
project (buildcmsisdsp VERSION 0.1)

# Define the path to CMSIS-DSP
set(DSP ${CMAKE_CURRENT_SOURCE_DIR})

# Add DSP folder to module path
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR})
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/Source)

########### 
#
# CMSIS DSP
#

# Load CMSIS-DSP definitions. Libraries will be built in bin_dsp
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/Source bin_dsp)

From powershell on Windows, cd into the build folder, and run

cmake -DROOT="../../../.." -DCMAKE_TOOLCHAIN_FILE="../gcc.cmake" -DARM_CPU="cortex-m0plus" -DCMAKE_C_COMPILER="C:/Program Files (x86)/GNU Arm Embedded Toolchain/10 2020-q4-major/bin/arm-none-eabi-gcc.exe" -DCMAKE_CXX_COMPILER="C:/Program Files (x86)/GNU Arm Embedded Toolchain/10 2020-q4-major/bin/arm-none-eabi-gcc.exe" -DCMAKE_MAKE_PROGRAM="C:/Program Files (x86)/GnuWin32/bin/make.exe" -G "Unix Makefiles" ..

note that you'll need GnuWin32 make installed, as well as the GNU Arm embedded toolchain. On linux, the command is very similar, but I haven't tested it yet.

After that, run

make VERBOSE=1

That should build .a files for each of the math libraries, in the build folder.

Packaging instructions

Make sure to build the math libraries FIRST

To package this repository into the required files for the Arduino IDE, run make all. In linux this should just work (untested), for Windows you'll need to install Cygwin with the Perl package selected and run it from the Cygwin terminal.