Cryptoauthlib, STM32, arm-none-eabi-gcc, libopenCM3 and makefiles.

[krish2487]

Hello folks,

I am trying to use cryptoauthlib with an STM32 controller and libopenCM3 HAL.
I have run into a roadblock while trying to integrate the library into my application.
I have started with the libopenCM3 template from here
and I have renamed the "my-common-code" to "shared_libs" and "my-project" to "cryptoauth_test". I have then cloned the cryptoauthlib into the "shared_libs" folder and created the "build" folder under the "cryptoauthlib" folder.

So my folder structure looks like this.

.
├── cryptoauth_test
│   └── bin
├── libopencm3
.....
│   ├── include
│   │   ├── libopencm3
│   │   │   ├── cm3
│   │   │   ├── dispatch
│   │   │   ├── efm32
│   │   │   ├── ethernet
│   │   │   ├── lm3s
│   │   │   ├── lm4f
│   │   │   ├── lpc13xx
│   │   │   ├── lpc17xx
│   │   │   ├── lpc43xx
│   │   │   ├── msp432
│   │   │   ├── sam
│   │   │   ├── stm32
│   │   │   ├── usb
│   │   │   └── vf6xx
│   │   └── libopencmsis
│   │       ├── dispatch
│   │       ├── efm32
│   │       ├── lm3s
│   │       ├── lpc13xx
│   │       ├── lpc17xx
│   │       ├── lpc43xx
│   │       ├── msp432
│   │       ├── sam
│   │       ├── stm32
│   │       └── vf6xx
└── shared_libs
    ├── cryptoauthlib
    │   ├── app
    │   │   ├── api_206a
    │   │   ├── ip_protection
    │   │   ├── pkcs11
    │   │   ├── secure_boot
    │   │   └── tng
    │   ├── build
    │   │   ├── CMakeFiles
    │   │   └── lib
    │   ├── harmony
    │   │   ├── config
    │   │   ├── src
    │   │   └── templates
    │   ├── lib
    │   │   ├── atcacert
    │   │   ├── calib
    │   │   ├── crypto
    │   │   ├── hal
    │   │   ├── host
    │   │   ├── jwt
    │   │   ├── mbedtls
    │   │   ├── openssl
    │   │   ├── pkcs11
    │   │   └── wolfssl
    │   ├── python
    │   │   ├── cryptoauthlib
    │   │   └── tests
    │   ├── test
    │   │   ├── api_atcab
    │   │   ├── api_calib
    │   │   ├── atcacert
    │   │   ├── jwt
    │   │   ├── tng
    │   │   └── vectors
    │   └── third_party
    │       ├── hal
    │       ├── hidapi
    │       └── unity

I navigated to the cryptoauthlib folder and created my custom hal inside the "lib/hal" folder called hal_i2c_stm3.c
The contents are like this

#include <stdio.h>
#include <string.h>
#include "../atca_iface.h"
#include "../cryptoauthlib.h"
#include "atca_hal.h"
#include "delay.h"
#include "libopencm3/stm32/rcc.h"
#include "libopencm3/stm32/gpio.h"
#include "libopencm3/stm32/i2c.h"

#ifdef ATCA_HAL_STM32

void atca_delay_ms(uint32_t ms) { delay_ms(ms); }

void hal_i2c_change_baud(ATCAIface iface, uint32_t speed)
{
	return ATCA_SUCCESS;
}

ATCA_STATUS hal_i2c_init(void *hal, ATCAIfaceCfg *cfg)
{
	rcc_clock_setup_in_hse_8mhz_out_72mhz();// For "blue pill"
	rcc_periph_clock_enable(RCC_GPIOB);  // I2C
	rcc_periph_clock_enable(RCC_AFIO);
	rcc_periph_clock_enable(RCC_I2C1);
	gpio_set_mode(GPIOB,
	              GPIO_MODE_OUTPUT_50_MHZ,
	              GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN,
	              GPIO8 | GPIO9);
	gpio_set(GPIOB, GPIO8 | GPIO9);

	gpio_primary_remap(0, 0);
}

ATCA_STATUS hal_i2c_post_init(ATCAIface iface) { return ATCA_SUCCESS; }

ATCA_STATUS hal_i2c_send(ATCAIface iface, uint8_t *txdata, int txlength)
{
	ATCAIfaceCfg *cfg = iface->mIfaceCFG;
	txdata[0] = 0x03;
	txlength++;

	i2c_send_start(I2C1);
	for (uint8_t i = 0; i < txlength; i++)
		{
			i2c_send_data(I2C1, txdata);
			txdata++;
		}
	i2c_send_stop(I2C1);

	return ATCA_SUCCESS;
}

ATCA_STATUS hal_i2c_receive(ATCAIface iface, uint8_t *rxdata,
                            uint16_t *rxlength)
{
	ATCAIfaceCfg *cfg = iface->mIfaceCFG;
	int addr = cfg->atcai2c.slave_address;

	rxdata[0] = i2c_get_data(I2C1);
	// rxdata[0] = Wire.read();
	*rxlength = rxdata[0];

	if (*rxlength > 1)
		{
			for (uint8_t i = 0; i < *rxlength - 1; i++)
				{
					rxdata = i2c_get_data(I2C1);
				}

		}

	return ATCA_SUCCESS;
}

ATCA_STATUS hal_i2c_release(void *hal_data)
{
	i2c_send_stop(I2C1);
	return ATCA_SUCCESS;
}

ATCA_STATUS hal_i2c_wake(ATCAIface iface)
{
	return ATCA_SUCCESS;
}

ATCA_STATUS hal_i2c_idle(ATCAIface iface)
{
	return ATCA_SUCCESS;
}

ATCA_STATUS hal_i2c_sleep(ATCAIface iface)
{
	ATCAIfaceCfg *cfg = atgetifacecfg(iface);
	int addr = cfg->atcai2c.slave_address;
	uint8_t sleep_data = 0x01;

	i2c_send_start(I2C1);
	i2c_send_data(I2C1, sleep_data);
	i2c_send_stop(I2C1);

	return ATCA_SUCCESS;
}

ATCA_STATUS hal_i2c_discover_buses(int i2c_buses[], int max_buses)
{
	return ATCA_UNIMPLEMENTED;
}

ATCA_STATUS hal_i2c_discover_devices(int bus_num, ATCAIfaceCfg *cfg,
                                     int *found)
{
	return ATCA_UNIMPLEMENTED;
}

#endif

I then navigated to the build folder and and according to the instructions here

ran then configuration and build by issuing the following commands.

 cmake -DATCA_ATECC608A_SUPPORT=ON -DATCA_HAL_I2C=ON -DATCA_BUILD_SHARED_LIBS=OFF ../  
 cmake --build .    

I ended up with the "libcryptoauthlib.a" and "atca_config.h" file inside the "lib" folder under the "build" folder.
I copied the "atca_config.h" file into my actual project source directory "cryptoauth_test".

I have then modified the makefile inside the project source to link the cryptoauthlib.a library and added the necessary paths. My makefile looks like this now

PROJECT = crypto_test
BUILD_DIR = bin

SHARED_DIR = ../shared_libs ../shared_libs/cryptoauthlib/lib
CFILES = main.c
CFILES += delay.c
TGT_CFLAGS += -DATCA_HAL_STM32
TGT_LDFLAGS += -L ../shared_libs/cryptoauthlib/build/lib/ -lcryptoauth

# TODO - you will need to edit these two lines!
DEVICE=stm32f103rct6
# ST-FLASH = st-flash
OOCD_INTERFACE = jlink
OOCD_TARGET = stm32f1x
# OOCD_FILE = board/stm32ldiscovery.cfg

# You shouldn't have to edit anything below here.
VPATH += $(SHARED_DIR)
INCLUDES += $(patsubst %,-I%, . $(SHARED_DIR))
OPENCM3_DIR=../libopencm3

include $(OPENCM3_DIR)/mk/genlink-config.mk
include ../rules.mk
include $(OPENCM3_DIR)/mk/genlink-rules.mk

size: all
	$(SIZE) $(PROJECT).elf

write: $(PROJECT).bin
	$(ST-FLASH) write $(PROJECT).bin 0x8000000

erase:
	$(ST-FLASH) erase

Notice the ATCA_HAL_STM32 flag that is also defined in the custom HAL.

I have then created a sample main.c file to initialize the ATECC608A chip. This is what my main file looks like

#include <stdlib.h>
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/usb/usbd.h>
#include <libopencm3/usb/cdc.h>
#include "libopencm3/cm3/nvic.h"
#include "libopencm3/cm3/systick.h"
#include "libopencm3/stm32/spi.h"
#include "usb.h"
#include "atca_config.h"
#include "cryptoauthlib.h"
#include "delay.h"

uint32_t temp;
char test_string[13] = "Hello World\n";
uint32_t i = 2000000;

int main(void)
{

	rcc_clock_setup_in_hsi_out_48mhz();

	//Enable GPIOC Peripheral clock
	rcc_periph_clock_enable(RCC_GPIOB);
	//Output mode, no pull ups or pull down
	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO0 | GPIO1);
	//Set GPIO8 and clear GPIO9 to see toggle
	gpio_set(GPIOB, GPIO0);
	gpio_clear(GPIOB, GPIO1);

	usbd_dev = usbd_init(&st_usbfs_v1_usb_driver, &dev, &config, usb_strings, 3, usbd_control_buffer, sizeof(usbd_control_buffer));
	usbd_register_set_config_callback(usbd_dev, cdcacm_set_config);
	nvic_enable_irq(NVIC_USB_LP_CAN_RX0_IRQ);

	temp = 0;

	//Sets systick clocksource to clock / 8 = 6000000 counts per second
	systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
	//Sets systick reload counter to give a 'tick' once a millisecond.
	// 48000000 / 48000 = 1000 overflows every second or 48000-1
	systick_set_reload(5999);
	//Enables systick interrupt - defined in sys_tick_interrupt() handler
	systick_interrupt_enable();
	//Starts the systick counter.
	systick_counter_enable();
	// usbd_ep_write_packet(usbd_dev, 0x82, "Hello World\n", strlen("Hello World\n"));
	setup_delay_timer();

	delay_ms(10000);
	usbd_ep_write_packet(usbd_dev, 0x82, "Hello World\n", strlen("Hello World\n"));
	delay_ms(10000);

	ATCAIfaceCfg cfg = cfg_ateccx08a_i2c_default;

	ATCA_STATUS ret = atcab_init(&cfg_ateccx08a_i2c_default);

	// Get random number
	uint8_t rand[32];
	ret = atcab_random(rand);

	if (ret != ATCA_SUCCESS)
		{
			USB_Write_Message("Error Initializing Cryptochip", strlen("Error Initializing Cryptochip"));
		}

	delay_ms(10000);

	while (1)
		{

		}

}


void sys_tick_handler(void)
{
	temp++;
	if (temp >= 1000)
		{
			gpio_toggle(GPIOB, GPIO1);
			temp = 0;
		}
}

// This is the interrupt handler for low priority USB events. Implementing a
// function with this name makes it the function used for the interrupt.
// TODO: Handle the other USB interrupts.
void usb_lp_can_rx0_isr(void)
{

	gpio_toggle(GPIOB, GPIO0);
	usbd_poll(usbd_dev);

}

I have included both the cryptoauthlib.h and atca_config.h file, and I do hope I have added the necessary paths for the makefile to pickup the sources.
However, this is where I am running into issues.
When i run make in my project source folder I get an "undefined reference to..." error..
This is what the console output looks like in a verbose manner.

make V=1
  CC    main.c
arm-none-eabi-gcc -DATCA_HAL_STM32  -std=c11 -ggdb3 -mcpu=cortex-m3 -mthumb -msoft-float -fno-common  -ffunction-sections -fdata-sections -fstack-usage -Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes  -MD -Wall -Wundef -I. -I../shared_libs -I../shared_libs/cryptoauthlib/lib -I. -I../libopencm3/include -I. -I../shared_libs -I../shared_libs/cryptoauthlib/lib -I. -I../libopencm3/include  -DSTM32F1 -DSTM32F103RCT6 -I../libopencm3/include -o bin/main.o -c main.c
In file included from main.c:9:
usb.h:210:13: warning: 'cdcacm_data_tx_cb' defined but not used [-Wunused-function]
  210 | static void cdcacm_data_tx_cb(usbd_device *usbd_dev, uint8_t ep)
      |             ^~~~~~~~~~~~~~~~~
  CC    ../shared_libs/delay.c
arm-none-eabi-gcc -DATCA_HAL_STM32  -std=c11 -ggdb3 -mcpu=cortex-m3 -mthumb -msoft-float -fno-common  -ffunction-sections -fdata-sections -fstack-usage -Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes  -MD -Wall -Wundef -I. -I../shared_libs -I../shared_libs/cryptoauthlib/lib -I. -I../libopencm3/include -I. -I../shared_libs -I../shared_libs/cryptoauthlib/lib -I. -I../libopencm3/include  -DSTM32F1 -DSTM32F103RCT6 -I../libopencm3/include -o bin/delay.o -c ../shared_libs/delay.c
  GENLNK  stm32f103rct6
arm-none-eabi-gcc -E -mcpu=cortex-m3 -mthumb -msoft-float -DSTM32F1 -DSTM32F103RCT6 -D_ROM=256K -D_RAM=48K -D_ROM_OFF=0x08000000 -D_RAM_OFF=0x20000000 -P -E ../libopencm3/ld/linker.ld.S > generated.stm32f103rct6.ld
  LD    crypto_test.elf
arm-none-eabi-gcc -L ../shared_libs/cryptoauthlib/build/lib/ -lcryptoauth -Tgenerated.stm32f103rct6.ld -L../libopencm3/lib -nostartfiles -mcpu=cortex-m3 -mthumb -msoft-float -specs=nano.specs  -Wl,--build-id=uuid -Wl,-Map=crypto_test.map -L../libopencm3/lib bin/main.o bin/delay.o -lopencm3_stm32f1 -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group -o crypto_test.elf
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/bin/ld: bin/main.o: in function `main':
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/cryptoauth_test/main.c:55: undefined reference to `atcab_init'
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/bin/ld: /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/cryptoauth_test/main.c:59: undefined reference to `atcab_random'
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/bin/ld: /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/cryptoauth_test/main.c:68: undefined reference to `cfg_ateccx08a_i2c_default'
collect2: error: ld returned 1 exit status
make: *** [crypto_test.elf] Error 1

It looks like the compiler is linking the cryptoauthlib but is yet not finding the actual source for the functions it is complaining about as seen from this line here.

 LD    crypto_test.elf
arm-none-eabi-gcc -L ../shared_libs/cryptoauthlib/build/lib/ -lcryptoauth -Tgenerated.stm32f103rct6.ld -L../libopencm3/lib -nostartfiles -mcpu=cortex-m3 -mthumb -msoft-float -specs=nano.specs  -Wl,--build-id=uuid -Wl,-Map=crypto_test.map -L../libopencm3/lib bin/main.o bin/delay.o -lopencm3_stm32f1 -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group -o crypto_test.elf

I am not sure how to resolve this issue. I would be extremely grateful if someone more knowledgeable can point out what I am doing wrong and how I can fix this and get the library to link and successfully compile.

Or, if I am going about it the wrong way and there is in fact an easier way to integrate the library into a makefile project.. I am game for it as well.

Thanks in advance folks.
I apologize for the long post, but I feel like the more information I give about what and how I have done my work, will eable others to help me better. :-)

[bryan-hunt]

Did you set up the environment to enable cross compilation for CMake with the correct paths so it picks up correct compiler and library paths? As for the missing symbols you can see that they are are only present when the configuration allows for it: https://github.com/MicrochipTech/cryptoauthlib/blob/main/lib/atca_cfgs.c#L40-L58 - In other words in order to have the I2C default structure defined you need to enable ATCA_HAL_I2C

[krish2487]

@bryan-hunt
Thank you for the prompt response.
I have not setup the environment for cross compilation.
In the this page here in the first line it states that cmake configuration does not support cross compilation.

If I can trouble you, how would I go about doing the cross compilation
As I understand it, it should be as simple as

CC=arm-none-eabi-gcc CXX=arm-none-eabi-g++ cmake -DATCA_BUILD_SHARED_LIBS=OFF -DATCA_HAL_I2C=ON ../

while building the cryptoauthlib isnt it??

Secondly, if you look at the commands I have given for building the cryptoauthlib, I did indeed define the "ATCA_HAL_I2C" parameter

cmake -DATCA_ATECC608A_SUPPORT=ON -DATCA_HAL_I2C=ON -DATCA_BUILD_SHARED_LIBS=OFF ../  
 cmake --build .    

but looking at the link you provided I did not define the "ATCA_ECC_SUPPORT" parameter. I can rebuilding the library with those specific define flags and try again.. but I suspect it might still not work, if it boils down to a cross compilation issue

[bryan-hunt]

yeah I believe that generally the build files you're getting are jumbled. I would suggest setting up your own makefiles as one project. You can copy the atca_config.h file you created already as a start but you'll have to make some adjustments. Cryptoauthlib needs timing functions as well - the linux timing functions that would be included using the above process won't work in your STM32.

[krish2487]

If i can trouble you for some specific help, can you give a sample project that I can work off from @bryan-hunt .

I see from this post that you have posted a rather nice example for compiling and integrating the cryptoauthlib for ESP32.
#5 (comment)

I was wondering, if you can suggest something similar. I understand that I would be subjecting you to some inconvenience and extra work, but it would mean a lot to me and I hope provide inspiration to many others to integrate the cryptoauthlib into their projects and platforms.

Thank you in advance again!! :-)

PS: I understand your concerns about the timing. I am presently focusing on getting the compilation and linking to successfully arrive at a binary file. Once that step is established, I would like to focus on fine tuning the HAL. For that matter the custom HAL in its present form isnt usable either, it is just a quick and dirty stuff I threw to try and get it to compile. :-)

[krish2487]

@bryan-hunt , I have tried to cross compile the cryptoauthlib using the arm-none-eabi-gcc compiler like so
CC=arm-none-eabi-gcc cmake -DATCA_ATECC608A_SUPPORT=ON -DATCA_HAL_I2C=ON -DATCA_BUILD_SHARED_LIBS=OFF -DATCA_ECC_SUPPORT=ON ../

and it looks like cmake is unable to cross compile with this compiler. I get this error

 CC=arm-none-eabi-gcc cmake -DATCA_ATECC608A_SUPPORT=ON -DATCA_HAL_I2C=ON -DATCA_BUILD_SHARED_LIBS=OFF -DATCA_ECC_SUPPORT=ON ../
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.


-- The C compiler identification is GNU 9.3.1
-- Checking whether C compiler has -isysroot
-- Checking whether C compiler has -isysroot - yes
-- Checking whether C compiler supports OSX deployment target flag
-- Checking whether C compiler supports OSX deployment target flag - no
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-gcc
-- Check for working C compiler: /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-gcc - broken
CMake Error at /usr/local/Cellar/cmake/3.19.6/share/cmake/Modules/CMakeTestCCompiler.cmake:66 (message):
  The C compiler

    "/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-gcc"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/build/CMakeFiles/CMakeTmp

    Run Build Command(s):/usr/bin/make cmTC_c2c8c/fast && /Library/Developer/CommandLineTools/usr/bin/make  -f CMakeFiles/cmTC_c2c8c.dir/build.make CMakeFiles/cmTC_c2c8c.dir/build
    Building C object CMakeFiles/cmTC_c2c8c.dir/testCCompiler.c.o
    /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-gcc   -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk -o CMakeFiles/cmTC_c2c8c.dir/testCCompiler.c.o -c /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/build/CMakeFiles/CMakeTmp/testCCompiler.c
    Linking C executable cmTC_c2c8c
    /usr/local/Cellar/cmake/3.19.6/bin/cmake -E cmake_link_script CMakeFiles/cmTC_c2c8c.dir/link.txt --verbose=1
    /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-gcc  -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk -Wl,-search_paths_first -Wl,-headerpad_max_install_names CMakeFiles/cmTC_c2c8c.dir/testCCompiler.c.o -o cmTC_c2c8c
    /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/bin/ld: warning: cannot find entry symbol arch_paths_first; defaulting to 0000000000008018
    /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/bin/ld: /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/lib/libc.a(lib_a-exit.o): in function `exit':
    exit.c:(.text.exit+0x2c): undefined reference to `_exit'
    collect2: error: ld returned 1 exit status
    make[1]: *** [cmTC_c2c8c] Error 1
    make: *** [cmTC_c2c8c/fast] Error 2





  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


-- Configuring incomplete, errors occurred!
See also "/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/build/CMakeFiles/CMakeOutput.log".
See also "/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/build/CMakeFiles/CMakeError.log".

I know the arm gcc compiler works since I use it fairly regularly with my stm32 projects.. yet cmake seems to find it broken.
I am running out of ideas now.. :-(

Is there anything else I can try on my end to compile the library??
Thanks in advance!! :-)

[krish2487]

Ok.. Some progress and I think this might provide some hint as to why it is not working.. To fix the issue of cross compilation, I have done some reading and I modified the CMakeLists.txt to reflect the toolchain I am using for STM32. I have added this section at the beginning of the file just after the version setting.

set(CMAKE_SYSTEM_NAME      Generic)
set(CMAKE_SYSTEM_VERSION   1)
set(CMAKE_SYSTEM_PROCESSOR arm-eabi)

set(CMAKE_AR             /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-ar CACHE PATH "" FORCE)
set(CMAKE_ASM_COMPILER   /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-as CACHE PATH "" FORCE)
set(CMAKE_C_COMPILER     /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-gcc CACHE PATH "" FORCE)
set(CMAKE_CXX_COMPILER   /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-g++ CACHE PATH "" FORCE)
set(CMAKE_LINKER         /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-ld CACHE PATH "" FORCE)
set(CMAKE_OBJCOPY        /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-objcopy CACHE PATH "" FORCE)
set(CMAKE_RANLIB         /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-ranlib CACHE PATH "" FORCE)
set(CMAKE_SIZE           /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-size CACHE PATH "" FORCE)
set(CMAKE_STRIP          /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/arm-none-eabi-strip CACHE PATH "" FORCE)

set(TOOCHAIN_LIB_DIR " ~/gcc-arm-none-eabi/lib/")

I have sorta taken inspiration from this file - here

and now the first step works okay and this is the output I see

 cmake -DATCA_ATECC608A_SUPPORT=ON -DATCA_HAL_I2C=ON -DATCA_BUILD_SHARED_LIBS=OFF -DATCA_ECC_SUPPORT=ON ../
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.


-- The C compiler identification is AppleClang 12.0.0.12000026
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Looking for malloc
-- Looking for malloc - found
-- Looking for free
-- Looking for free - found
-- Configuring done
-- Generating done
CMake Warning:
  Manually-specified variables were not used by the project:

    ATCA_ECC_SUPPORT


-- Build files have been written to: /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/build

However when I run the
cmake --build . it throws a bunch of errors. This is what I see on the console.

cmake --build .
[  1%] Building C object lib/CMakeFiles/cryptoauth.dir/atca_basic.c.o
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_basic.c: In function 'atcab_write_config_zone':
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_basic.c:3916:63: warning: passing argument 2 of 'calib_ecc204_write_config_zone' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
 3916 |             status = calib_ecc204_write_config_zone(_gDevice, config_data);
      |                                                               ^~~~~~~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/cryptoauthlib.h:109,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_basic.h:34,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_basic.c:29:
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/calib/calib_basic.h:206:72: note: expected 'uint8_t *' {aka 'unsigned char *'} but argument is of type 'const uint8_t *' {aka 'const unsigned char *'}
  206 | ATCA_STATUS calib_ecc204_write_config_zone(ATCADevice device, uint8_t* config_data);
      |                                                               ~~~~~~~~~^~~~~~~~~~~
[  2%] Building C object lib/CMakeFiles/cryptoauth.dir/atca_cfgs.c.o
[  4%] Building C object lib/CMakeFiles/cryptoauth.dir/atca_debug.c.o
[  5%] Building C object lib/CMakeFiles/cryptoauth.dir/atca_device.c.o
[  7%] Building C object lib/CMakeFiles/cryptoauth.dir/atca_helpers.c.o
[  8%] Building C object lib/CMakeFiles/cryptoauth.dir/atca_iface.c.o
[ 10%] Building C object lib/CMakeFiles/cryptoauth.dir/atca_utils_sizes.c.o
[ 11%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_aes.c.o
[ 13%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_aes_gcm.c.o
[ 14%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_basic.c.o
[ 16%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_checkmac.c.o
[ 17%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_command.c.o
[ 19%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_counter.c.o
[ 20%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_derivekey.c.o
[ 22%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_ecdh.c.o
[ 23%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_execution.c.o
[ 25%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_gendig.c.o
[ 26%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_genkey.c.o
[ 27%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_hmac.c.o
[ 29%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_info.c.o
[ 30%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_kdf.c.o
[ 32%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_lock.c.o
[ 33%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_mac.c.o
[ 35%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_nonce.c.o
[ 36%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_privwrite.c.o
[ 38%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_random.c.o
[ 39%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_read.c.o
[ 41%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_secureboot.c.o
[ 42%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_selftest.c.o
[ 44%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_sha.c.o
[ 45%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_sign.c.o
[ 47%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_updateextra.c.o
[ 48%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_verify.c.o
[ 50%] Building C object lib/CMakeFiles/cryptoauth.dir/calib/calib_write.c.o
[ 51%] Building C object lib/CMakeFiles/cryptoauth.dir/host/atca_host.c.o
[ 52%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/api_206a/api_206a.c.o
[ 54%] Building C object lib/CMakeFiles/cryptoauth.dir/atcacert/atcacert_client.c.o
[ 55%] Building C object lib/CMakeFiles/cryptoauth.dir/atcacert/atcacert_date.c.o
[ 57%] Building C object lib/CMakeFiles/cryptoauth.dir/atcacert/atcacert_def.c.o
[ 58%] Building C object lib/CMakeFiles/cryptoauth.dir/atcacert/atcacert_der.c.o
[ 60%] Building C object lib/CMakeFiles/cryptoauth.dir/atcacert/atcacert_host_hw.c.o
[ 61%] Building C object lib/CMakeFiles/cryptoauth.dir/atcacert/atcacert_host_sw.c.o
[ 63%] Building C object lib/CMakeFiles/cryptoauth.dir/atcacert/atcacert_pem.c.o
[ 64%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/atca_crypto_hw_aes_cbc.c.o
[ 66%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/atca_crypto_hw_aes_cbcmac.c.o
[ 67%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/atca_crypto_hw_aes_ccm.c.o
[ 69%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/atca_crypto_hw_aes_cmac.c.o
[ 70%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/atca_crypto_hw_aes_ctr.c.o
[ 72%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/atca_crypto_sw_ecdsa.c.o
[ 73%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/atca_crypto_sw_rand.c.o
[ 75%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/atca_crypto_sw_sha1.c.o
[ 76%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/atca_crypto_sw_sha2.c.o
[ 77%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/hashes/sha1_routines.c.o
[ 79%] Building C object lib/CMakeFiles/cryptoauth.dir/crypto/hashes/sha2_routines.c.o
[ 80%] Building C object lib/CMakeFiles/cryptoauth.dir/jwt/atca_jwt.c.o
[ 82%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tflxtls_cert_def_4_device.c.o
[ 83%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tng_atca.c.o
[ 85%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tng_atcacert_client.c.o
[ 86%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tng_root_cert.c.o
[ 88%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tnglora_cert_def_1_signer.c.o
[ 89%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tnglora_cert_def_2_device.c.o
[ 91%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tnglora_cert_def_4_device.c.o
[ 92%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tngtls_cert_def_1_signer.c.o
[ 94%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tngtls_cert_def_2_device.c.o
[ 95%] Building C object lib/CMakeFiles/cryptoauth.dir/__/app/tng/tngtls_cert_def_3_device.c.o
[ 97%] Building C object lib/CMakeFiles/cryptoauth.dir/hal/atca_hal.c.o
[ 98%] Building C object lib/CMakeFiles/cryptoauth.dir/hal/hal_linux.c.o
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:88,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:32:
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/_types/_mode_t.h:31:9: error: unknown type name '__darwin_mode_t'
   31 | typedef __darwin_mode_t         mode_t;
      |         ^~~~~~~~~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/_types/_mode_t.h:31:33: error: conflicting types for 'mode_t'
   31 | typedef __darwin_mode_t         mode_t;
      |                                 ^~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/unistd.h:12,
                 from /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/unistd.h:4,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:29:
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/types.h:189:18: note: previous declaration of 'mode_t' was here
  189 | typedef __mode_t mode_t;  /* permissions */
      |                  ^~~~~~
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:89,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:32:
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/_types/_off_t.h:31:9: error: unknown type name '__darwin_off_t'
   31 | typedef __darwin_off_t          off_t;
      |         ^~~~~~~~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/_types/_off_t.h:31:33: error: conflicting types for 'off_t'
   31 | typedef __darwin_off_t          off_t;
      |                                 ^~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/unistd.h:12,
                 from /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/unistd.h:4,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:29:
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/types.h:157:18: note: previous declaration of 'off_t' was here
  157 | typedef __off_t  off_t;  /* file offset */
      |                  ^~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:32:
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h: In function 'mmap':
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:238:52: error: expected declaration specifiers before '__DARWIN_ALIAS'
  238 | void *  mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap);
      |                                                    ^~~~~~~~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:241:39: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__DARWIN_ALIAS'
  241 | int     mprotect(void *, size_t, int) __DARWIN_ALIAS(mprotect);
      |                                       ^~~~~~~~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:243:36: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__DARWIN_ALIAS_C'
  243 | int     msync(void *, size_t, int) __DARWIN_ALIAS_C(msync);
      |                                    ^~~~~~~~~~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:247:32: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__DARWIN_ALIAS'
  247 | int     munmap(void *, size_t) __DARWIN_ALIAS(munmap);
      |                                ^~~~~~~~~~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/fcntl.h:4,
                 from /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/fcntl.h:1,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:33:
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/_default_fcntl.h:213:12: error: storage class specified for parameter 'open'
  213 | extern int open (const char *, int, ...);
      |            ^~~~
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/_default_fcntl.h:215:12: error: storage class specified for parameter 'openat'
  215 | extern int openat (int, const char *, int, ...);
      |            ^~~~~~
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/_default_fcntl.h:217:12: error: storage class specified for parameter 'creat'
  217 | extern int creat (const char *, mode_t);
      |            ^~~~~
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/_default_fcntl.h:218:12: error: storage class specified for parameter 'fcntl'
  218 | extern int fcntl (int, int, ...);
      |            ^~~~~
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/_default_fcntl.h:220:12: error: storage class specified for parameter 'flock'
  220 | extern int flock (int, int);
      |            ^~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:35:
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/errno.h:5:13: error: storage class specified for parameter 'error_t'
    5 | typedef int error_t;
      |             ^~~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/errno.h:9,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:35:
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/errno.h:15:13: error: storage class specified for parameter '__errno'
   15 | extern int *__errno (void);
      |             ^~~~~~~
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/errno.h:20:36: error: storage class specified for parameter '_sys_errlist'
   20 | extern __IMPORT const char * const _sys_errlist[];
      |                                    ^~~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/arm-none-eabi/include/sys/errno.h:21:21: error: storage class specified for parameter '_sys_nerr'
   21 | extern __IMPORT int _sys_nerr;
      |                     ^~~~~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:36,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:37:
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_status.h:84:3: error: storage class specified for parameter 'ATCA_STATUS'
   84 | } ATCA_STATUS;
      |   ^~~~~~~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:43,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:37,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:37:
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_devtypes.h:53:3: error: storage class specified for parameter 'ATCADeviceType'
   53 | } ATCADeviceType;
      |   ^~~~~~~~~~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:37,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:37:
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:63:3: error: storage class specified for parameter 'ATCAIfaceType'
   63 | } ATCAIfaceType;
      |   ^~~~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:72:30: error: storage class specified for parameter 'ATCAKitType'
   72 |     ATCA_KIT_UNKNOWN_IFACE } ATCAKitType;
      |                              ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:81:5: error: expected specifier-qualifier-list before 'ATCAIfaceType'
   81 |     ATCAIfaceType  iface_type;      // active iface - how to interpret the union below
      |     ^~~~~~~~~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:37,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:37:
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:153:3: error: storage class specified for parameter 'ATCAIfaceCfg'
  153 | } ATCAIfaceCfg;
      |   ^~~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:157:29: error: storage class specified for parameter 'ATCAIface'
  157 | typedef struct atca_iface * ATCAIface;
      |                             ^~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:163:5: error: expected specifier-qualifier-list before 'ATCA_STATUS'
  163 |     ATCA_STATUS (*halinit)(ATCAIface iface, ATCAIfaceCfg* cfg);
      |     ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:169:3: error: storage class specified for parameter 'ATCAHAL_t'
  169 | } ATCAHAL_t;
      |   ^~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:175:5: error: expected specifier-qualifier-list before 'ATCAIfaceCfg'
  175 |     ATCAIfaceCfg* mIfaceCFG;    /**< Points to previous defined/given Cfg object, the caller manages this */
      |     ^~~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:179:3: error: storage class specified for parameter 'atca_iface_t'
  179 | } atca_iface_t;
      |   ^~~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:181:1: error: expected declaration specifiers before 'ATCA_STATUS'
  181 | ATCA_STATUS initATCAIface(ATCAIfaceCfg *cfg, ATCAIface ca_iface);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:182:1: error: expected declaration specifiers before 'ATCAIface'
  182 | ATCAIface newATCAIface(ATCAIfaceCfg *cfg);
      | ^~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:183:1: error: expected declaration specifiers before 'ATCA_STATUS'
  183 | ATCA_STATUS releaseATCAIface(ATCAIface ca_iface);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:184:22: error: expected declaration specifiers or '...' before 'ATCAIface'
  184 | void deleteATCAIface(ATCAIface *ca_iface);
      |                      ^~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:187:1: error: expected declaration specifiers before 'ATCA_STATUS'
  187 | ATCA_STATUS atinit(ATCAIface ca_iface);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:188:1: error: expected declaration specifiers before 'ATCA_STATUS'
  188 | ATCA_STATUS atsend(ATCAIface ca_iface, uint8_t word_address, uint8_t *txdata, int txlength);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:189:1: error: expected declaration specifiers before 'ATCA_STATUS'
  189 | ATCA_STATUS atreceive(ATCAIface ca_iface, uint8_t word_address, uint8_t *rxdata, uint16_t *rxlength);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:190:1: error: expected declaration specifiers before 'ATCA_STATUS'
  190 | ATCA_STATUS atcontrol(ATCAIface ca_iface, uint8_t option, void* param, size_t paramlen);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:191:1: error: expected declaration specifiers before 'ATCA_STATUS'
  191 | ATCA_STATUS atwake(ATCAIface ca_iface);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:192:1: error: expected declaration specifiers before 'ATCA_STATUS'
  192 | ATCA_STATUS atidle(ATCAIface ca_iface);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:193:1: error: expected declaration specifiers before 'ATCA_STATUS'
  193 | ATCA_STATUS atsleep(ATCAIface ca_iface);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:196:1: error: expected declaration specifiers before 'ATCAIfaceCfg'
  196 | ATCAIfaceCfg * atgetifacecfg(ATCAIface ca_iface);
      | ^~~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:197:24: error: expected declaration specifiers or '...' before 'ATCAIface'
  197 | void* atgetifacehaldat(ATCAIface ca_iface);
      |                        ^~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:200:24: error: expected declaration specifiers or '...' before 'ATCAIface'
  200 | bool atca_iface_is_kit(ATCAIface ca_iface);
      |                        ^~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:201:28: error: expected declaration specifiers or '...' before 'ATCAIface'
  201 | int atca_iface_get_retries(ATCAIface ca_iface);
      |                            ^~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/atca_iface.h:202:36: error: expected declaration specifiers or '...' before 'ATCAIface'
  202 | uint16_t atca_iface_get_wake_delay(ATCAIface ca_iface);
      |                                    ^~~~~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:37:
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:51:5: error: expected specifier-qualifier-list before 'ATCA_STATUS'
   51 |     ATCA_STATUS (*send)(void* ctx, uint8_t* txdata, uint16_t txlen);        /**< Must be a blocking send */
      |     ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:56:3: error: storage class specified for parameter 'atca_hal_kit_phy_t'
   56 | } atca_hal_kit_phy_t;
      |   ^~~~~~~~~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:62:1: error: expected declaration specifiers before 'ATCA_STATUS'
   62 | ATCA_STATUS hal_iface_init(ATCAIfaceCfg *, ATCAHAL_t** hal, ATCAHAL_t** phy);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:63:1: error: expected declaration specifiers before 'ATCA_STATUS'
   63 | ATCA_STATUS hal_iface_release(ATCAIfaceType, void* hal_data);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:65:1: error: expected declaration specifiers before 'ATCA_STATUS'
   65 | ATCA_STATUS hal_check_wake(const uint8_t* response, int response_size);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:68:1: error: expected declaration specifiers before 'ATCA_STATUS'
   68 | ATCA_STATUS hal_i2c_init(ATCAIface iface, ATCAIfaceCfg *cfg);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:69:1: error: expected declaration specifiers before 'ATCA_STATUS'
   69 | ATCA_STATUS hal_i2c_post_init(ATCAIface iface);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:70:1: error: expected declaration specifiers before 'ATCA_STATUS'
   70 | ATCA_STATUS hal_i2c_send(ATCAIface iface, uint8_t word_address, uint8_t *txdata, int txlength);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:71:1: error: expected declaration specifiers before 'ATCA_STATUS'
   71 | ATCA_STATUS hal_i2c_receive(ATCAIface iface, uint8_t word_address, uint8_t *rxdata, uint16_t *rxlength);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:72:1: error: expected declaration specifiers before 'ATCA_STATUS'
   72 | ATCA_STATUS hal_i2c_control(ATCAIface iface, uint8_t option, void* param, size_t paramlen);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:78:1: error: expected declaration specifiers before 'ATCA_STATUS'
   78 | ATCA_STATUS hal_i2c_release(void *hal_data);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:181:3: error: storage class specified for parameter 'ATCA_HAL_CONTROL'
  181 | } ATCA_HAL_CONTROL;
      |   ^~~~~~~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:198:1: error: expected declaration specifiers before 'ATCA_STATUS'
  198 | ATCA_STATUS hal_create_mutex(void ** ppMutex, char* pName);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:199:1: error: expected declaration specifiers before 'ATCA_STATUS'
  199 | ATCA_STATUS hal_destroy_mutex(void * pMutex);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:200:1: error: expected declaration specifiers before 'ATCA_STATUS'
  200 | ATCA_STATUS hal_lock_mutex(void * pMutex);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:201:1: error: expected declaration specifiers before 'ATCA_STATUS'
  201 | ATCA_STATUS hal_unlock_mutex(void * pMutex);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/atca_hal.h:224:1: error: expected declaration specifiers before 'ATCA_STATUS'
  224 | ATCA_STATUS hal_iface_register_hal(ATCAIfaceType iface_type, ATCAHAL_t *hal, ATCAHAL_t **old_hal, ATCAHAL_t* phy, ATCAHAL_t** old_phy);
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:52:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
   52 | {
      | ^
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:61:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
   61 | {
      | ^
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:75:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
   75 | {
      | ^
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/semaphore.h:29,
                 from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:250:
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/semaphore.h:43:13: error: storage class specified for parameter 'sem_t'
   43 | typedef int sem_t;
      |             ^~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/semaphore.h:52:15: error: expected declaration specifiers or '...' before 'sem_t'
   52 | int sem_close(sem_t *);
      |               ^~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/semaphore.h:53:17: error: expected declaration specifiers or '...' before 'sem_t'
   53 | int sem_destroy(sem_t *) __deprecated;
      |                 ^~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/semaphore.h:54:18: error: expected declaration specifiers or '...' before 'sem_t'
   54 | int sem_getvalue(sem_t * __restrict, int * __restrict) __deprecated;
      |                  ^~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/semaphore.h:55:14: error: expected declaration specifiers or '...' before 'sem_t'
   55 | int sem_init(sem_t *, int, unsigned int) __deprecated;
      |              ^~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/semaphore.h:56:1: error: expected declaration specifiers before 'sem_t'
   56 | sem_t * sem_open(const char *, int, ...);
      | ^~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/semaphore.h:57:14: error: expected declaration specifiers or '...' before 'sem_t'
   57 | int sem_post(sem_t *);
      |              ^~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/semaphore.h:58:17: error: expected declaration specifiers or '...' before 'sem_t'
   58 | int sem_trywait(sem_t *);
      |                 ^~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/semaphore.h:60:14: error: expected declaration specifiers or '...' before 'sem_t'
   60 | int sem_wait(sem_t *) __DARWIN_ALIAS_C(sem_wait);
      |              ^~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:257:1: error: expected declaration specifiers before 'ATCA_STATUS'
  257 | ATCA_STATUS hal_create_mutex(void ** ppMutex, char* pName)
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:286:1: error: expected declaration specifiers before 'ATCA_STATUS'
  286 | ATCA_STATUS hal_destroy_mutex(void * pMutex)
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:310:1: error: expected declaration specifiers before 'ATCA_STATUS'
  310 | ATCA_STATUS hal_lock_mutex(void * pMutex)
      | ^~~~~~~~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:333:1: error: expected declaration specifiers before 'ATCA_STATUS'
  333 | ATCA_STATUS hal_unlock_mutex(void * pMutex)
      | ^~~~~~~~~~~
In file included from /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:32:
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:238:9: error: old-style parameter declarations in prototyped function definition
  238 | void *  mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap);
      |         ^~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:238:14: error: parameter name omitted
  238 | void *  mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap);
      |              ^~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:238:22: error: parameter name omitted
  238 | void *  mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap);
      |                      ^~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:238:30: error: parameter name omitted
  238 | void *  mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap);
      |                              ^~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:238:35: error: parameter name omitted
  238 | void *  mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap);
      |                                   ^~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:238:40: error: parameter name omitted
  238 | void *  mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap);
      |                                        ^~~
/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include/sys/mman.h:238:45: error: parameter name omitted
  238 | void *  mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap);
      |                                             ^~~~~
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/shared_libs/cryptoauthlib/lib/hal/hal_linux.c:353: error: expected '{' at end of input
  353 | /** @} */
      |
make[2]: *** [lib/CMakeFiles/cryptoauth.dir/hal/hal_linux.c.o] Error 1
make[1]: *** [lib/CMakeFiles/cryptoauth.dir/all] Error 2
make: *** [all] Error 2

I think this is a step in right direction but I need some help fixing these issues. It looks like the compilation is failing at the hal_linux.c file and a bunch of other "conflicting types" errors.

Is there anything I have done wrong on the CMakeLists.txt file that I should correct or exclude certain files from compiling? If so, how??

Thanks!! :-)

[krish2487]

Ok, on a hunch I decided to compile natively again and test a hypothesis. I removed the cross compiling options in the CMakeLists.txt and reverted back to the stock version.

This is the command I ran

 cmake -DATCA_ATECC608A_SUPPORT=ON -DATCA_HAL_I2C=ON -DATCA_BUILD_SHARED_LIBS=OFF -DATCA_ECC_SUPPORT=ON -DATCA_HAL_STM32=ON ../
cmake --build .

and it built the library successfully.

I navigated to the lib folder under the build folder and ran
ar -t libcryptoauth.a
to look at the library contents and this is the console output

ar -t libcryptoauth.a
__.SYMDEF SORTED
atca_basic.c.o
atca_cfgs.c.o
atca_debug.c.o
atca_device.c.o
atca_helpers.c.o
atca_iface.c.o
atca_utils_sizes.c.o
calib_aes.c.o
calib_aes_gcm.c.o
calib_basic.c.o
calib_checkmac.c.o
calib_command.c.o
calib_counter.c.o
calib_derivekey.c.o
calib_ecdh.c.o
calib_execution.c.o
calib_gendig.c.o
calib_genkey.c.o
calib_hmac.c.o
calib_info.c.o
calib_kdf.c.o
calib_lock.c.o
calib_mac.c.o
calib_nonce.c.o
calib_privwrite.c.o
calib_random.c.o
calib_read.c.o
calib_secureboot.c.o
calib_selftest.c.o
calib_sha.c.o
calib_sign.c.o
calib_updateextra.c.o
calib_verify.c.o
calib_write.c.o
atca_host.c.o
api_206a.c.o
atcacert_client.c.o
atcacert_date.c.o
atcacert_def.c.o
atcacert_der.c.o
atcacert_host_hw.c.o
atcacert_host_sw.c.o
atcacert_pem.c.o
atca_crypto_hw_aes_cbc.c.o
atca_crypto_hw_aes_cbcmac.c.o
atca_crypto_hw_aes_ccm.c.o
atca_crypto_hw_aes_cmac.c.o
atca_crypto_hw_aes_ctr.c.o
atca_crypto_sw_ecdsa.c.o
atca_crypto_sw_rand.c.o
atca_crypto_sw_sha1.c.o
atca_crypto_sw_sha2.c.o
sha1_routines.c.o
sha2_routines.c.o
atca_jwt.c.o
tflxtls_cert_def_4_device.c.o
tng_atca.c.o
tng_atcacert_client.c.o
tng_root_cert.c.o
tnglora_cert_def_1_signer.c.o
tnglora_cert_def_2_device.c.o
tnglora_cert_def_4_device.c.o
tngtls_cert_def_1_signer.c.o
tngtls_cert_def_2_device.c.o
tngtls_cert_def_3_device.c.o
atca_hal.c.o
hal_linux.c.o

Two issues popped out to me.

1. The library indeed contains the object files for atca_basic and atca_cfgs which contain the atcab_init and the cfg_ateccx08a_i2c_default definitions.

make V=1
  CC    main.c
arm-none-eabi-gcc -DATCA_HAL_STM32  -std=c11 -ggdb3 -mcpu=cortex-m3 -mthumb -msoft-float -fno-common  -ffunction-sections -fdata-sections -fstack-usage -Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes  -MD -Wall -Wundef -I. -I../shared_libs -I../shared_libs/cryptoauthlib/lib -I. -I../libopencm3/include -I. -I../shared_libs -I../shared_libs/cryptoauthlib/lib -I. -I../libopencm3/include  -DSTM32F1 -DSTM32F103RCT6 -I../libopencm3/include -o bin/main.o -c main.c
In file included from main.c:9:
usb.h:210:13: warning: 'cdcacm_data_tx_cb' defined but not used [-Wunused-function]
  210 | static void cdcacm_data_tx_cb(usbd_device *usbd_dev, uint8_t ep)
      |             ^~~~~~~~~~~~~~~~~
  CC    ../shared_libs/delay.c
arm-none-eabi-gcc -DATCA_HAL_STM32  -std=c11 -ggdb3 -mcpu=cortex-m3 -mthumb -msoft-float -fno-common  -ffunction-sections -fdata-sections -fstack-usage -Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes  -MD -Wall -Wundef -I. -I../shared_libs -I../shared_libs/cryptoauthlib/lib -I. -I../libopencm3/include -I. -I../shared_libs -I../shared_libs/cryptoauthlib/lib -I. -I../libopencm3/include  -DSTM32F1 -DSTM32F103RCT6 -I../libopencm3/include -o bin/delay.o -c ../shared_libs/delay.c
  GENLNK  stm32f103rct6
arm-none-eabi-gcc -E -mcpu=cortex-m3 -mthumb -msoft-float -DSTM32F1 -DSTM32F103RCT6 -D_ROM=256K -D_RAM=48K -D_ROM_OFF=0x08000000 -D_RAM_OFF=0x20000000 -P -E ../libopencm3/ld/linker.ld.S > generated.stm32f103rct6.ld
  LD    crypto_test.elf
arm-none-eabi-gcc -L ../shared_libs/cryptoauthlib/build/lib/ -lcryptoauth -Tgenerated.stm32f103rct6.ld -L../libopencm3/lib -nostartfiles -mcpu=cortex-m3 -mthumb -msoft-float -specs=nano.specs  -Wl,--build-id=uuid -Wl,-Map=crypto_test.map -L../libopencm3/lib bin/main.o bin/delay.o -lopencm3_stm32f1 -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group -o crypto_test.elf
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/bin/ld: bin/main.o: in function `main':
/Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/cryptoauth_test/main.c:55: undefined reference to `atcab_init'
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/bin/ld: /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/cryptoauth_test/main.c:59: undefined reference to `atcab_random'
/Users/srikrishnachaitanyanarumanchi/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/bin/ld: /Users/srikrishnachaitanyanarumanchi/Workspace/libopencm3/test/cryptoauth_test/main.c:68: undefined reference to `cfg_ateccx08a_i2c_default'
collect2: error: ld returned 1 exit status
make: *** [crypto_test.elf] Error 1

So the library definitely has these definitions present.

2. The last line of the ar output seems to indicate that hal used is the hal_linux and not the stm32 custom hal, inspite of me explicitly passing the -DATCA_HAL_STM32 flag to cmake when building the library as seen above.

@bryan-hunt Is there anything else I can try from my end to get it to link successfully?

[bryan-hunt]

Going back to my previous comment - write your own makefiles to include the proper sources in your project. You also might try using a development IDE that will make them for you. There many open source projects out there for MCU development.

https://eclipse-embed-cdt.github.io/ https://platformio.org/ and stm32cubeide all come to mind as options

[krish2487]

Ok, if I am understanding you correctly, I should not try and link the library separately but compile the sources for the cryptoauthlib as a part of my source files manually? Is that right?

and where should I look for the appropriate source files? Can I simply include the source files for the list of object files i get when i ran the ar command?

[bryan-hunt]

This is outside the scope of the kind of support we're able to provide short of suggesting an embedded development tutorial. We have several premade project to demonstrate the features of the device - you can find them in the MPLAB Harmony application projects and in the Trust Platform Development Suite.

[krish2487]

@bryan-hunt
Thank you, but I am already sold on the features of the product. I just need help using it in my application. :-)
Nevertheless, thank you for the help so far. I guess, I have to look for help elsewhere.

[krish2487]

@bryan-hunt Ok.. I followed your advice and started by adding all the necessary source files required to my existing makefile, which happened to be the files in the lib/, calib/, crypto/ and crypto/hashes/ folders and the binary compiles successfully now. :-) Now I have to work on separating the library build from the rest of the firmware.
Thank you!!