Installing micro-ecc issue

[dc]

Hi,

I am following below step for Installing micro_ecc_lib_nrf52.lib.

1. Install version 4.9-2015-q3-update of the GCC compiler toolchain for ARM. You can use ARM's Launchpad to find the toolchain for your operating system. - DONE

2. Make sure that make is installed (see, for example, MinGW, GNU Make, or Xcode). - I have no idea how i can install this and use it. I would like if any one can explain in detail. I am using windows 10 -64bit.

3. Clone the micro-ecc GitHub repository into InstallFolder\external\micro-ecc\micro-ecc. - DONE

I am getting following error during make command. D:\nRF5_SDK\external\micro-ecc\nrf52_keil\armgcc>make 'make' is not recognized as an internal or external command, operable program or batch file.

[Eugene Yu]

Hi dc,

For your case, you need to install MinGW.

Click below URL and download it.

sourceforge.net/.../download

I recommend you to install msys as well after installed MinGW in order to use Unix bash shell.

after installed msys, open the bash shell script which it located in “C:\MinGW\msys\1.0\msys.bat”

for uECC download and installation, you should unzip the uECC source code under micro-ecc folder as below.

1. Download uECC source code from git (github.com/.../micro-ecc)
2. Unzip micro-ecc code at “nRF5_SDK\external\micro-ecc\”
3. Change folder name to “micro-ecc” ex) \external\micro-ecc\micro-ecc
4. Then move to "nRF5_SDK\external\micro-ecc\nrf52_keil\armgcc" on Msys
5. execute Make command

Thanks,

Eugene

[howard n2wx]

After installing ARM's 6 2017-q2-update gcc I thought I'd finally licked getting the micro-ecc library built.  Man was I wrong! But rather than go through the whole mess, I'd been getting the below error. I particularly enoyed the part where it said No error on running the archiver but changed its mind.

make: Entering directory `C:/nRF5_SDK_15.0.0_a53641a/external/micro-ecc/nrf52hf_
iar/armgcc'
Creating library:
C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q2-update/bin/arm-none-eabi
-ar: No error
make: *** [micro_ecc_lib] Error 1
make: Leaving directory `C:/nRF5_SDK_15.0.0_a53641a/external/micro-ecc/nrf52hf_i
ar/armgcc'

The solution turned out to be explicitly running mingw's make from micro-ecc/nrf52hf_iar/armgcc with

cd micro-ecc\nrf52hf_iar\armgcc
\mingw\bin\mingw32-make

This incantation results in a nice micro_ecc_lib_nrf52.a archive to play with.

Unfortunately the uECC.c.o object included in the archive throws an IAR error

Error[Lt009]: Inconsistent wchar_t size, uECC.c.o(micro_ecc_lib_nrf52.a) has wchar_t size 16 bits

app_error_weak.o and 90 other objects, some of them in dl7M_tlf.a and 11 other libraries have wchar_t size 32 bits

but at least it's no longer a silly problem associated with an old 'make' from 2002

(I realize that you're not in this situation and have it working but thought this might save someone else 3/4 of a day getting past micro-ecc. It's a shame the library uses gcc asm ops and a GPL license)

[Jørgen Holmefjord]

Please have a look at this answer.