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sudar / Arduino-Makefile

Makefile for Arduino sketches. It defines the workflows for compiling code, flashing it to Arduino and even communicating through Serial.
http://hardwarefun.com/tutorials/compiling-arduino-sketches-using-makefile
GNU Lesser General Public License v2.1
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undefined reference errors while building elf object #460

Closed devjagadish closed 7 years ago

devjagadish commented 7 years ago

I have a project in which I am trying to use avrnacl lib, which was complied as a object archive file. If I name my file as .c all works fine, after I changed it to .cpp file for Serial i/o I get the following errors. I wonder how linker was able to find my archived lib when it has to deal with c file but not with cpp file. Please help me in understanding what's going wrong here, thanks.

build-uno/print.c.o
build-uno/randombytes.c.o
build-uno/Blink.cpp.o
(build-uno/libcore.a)wiring.c.o
(build-uno/libcore.a)wiring_digital.c.o
(build-uno/libcore.a)HardwareSerial.cpp.o
(build-uno/libcore.a)HardwareSerial0.cpp.o
(build-uno/libcore.a)Print.cpp.o
(build-uno/libcore.a)abi.cpp.o
(build-uno/libcore.a)main.cpp.o
(build-uno/libcore.a)hooks.c.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/../../../../avr/lib/avr5/libc.a)exit.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/avr5/libgcc.a)_exit.o
/var/folders/wj/k_j90nx15nx7fql_pb8fg1gr0000gr/T//cc0OGXFD.ltrans0.ltrans.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/../../../../avr/lib/avr5/libc.a)calloc.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/../../../../avr/lib/avr5/libc.a)malloc.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/../../../../avr/lib/avr5/libc.a)abort.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/../../../../avr/lib/avr5/libc.a)memset.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/avr5/libgcc.a)_copy_data.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/avr5/libgcc.a)_clear_bss.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/avr5/libgcc.a)_ctors.o
(/usr/local/Cellar/avr-gcc/4.9.3/lib/gcc/avr/4.9.3/avr5/libgcc.a)_tablejump2.o
/var/folders/wj/k_j90nx15nx7fql_pb8fg1gr0000gr/T//cc0OGXFD.ltrans0.ltrans.o: In function HardwareSerial::_tx_udr_empty_irq()': /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial.cpp:95: undefined reference torandombytes(unsigned char, unsigned long long)'
/var/folders/wj/k_j90nx15nx7fql_pb8fg1gr0000gr/T//cc0OGXFD.ltrans0.ltrans.o: In function HardwareSerial::write(unsigned char)': /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial.cpp:214: undefined reference torandombytes(unsigned char, unsigned long long)'
/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial.cpp:225: undefined reference to `crypto_secretbox_xsalsa20poly1305(unsigned char, unsigned char const, unsigned int, unsigned char const, unsigned char const)'
sej7278 commented 7 years ago

not sure what you mean there - you can't just rename a .c file to a .cpp file, also do you mean you have a prebuild .a binary file to link into?

need to see your Makefile and the arduino-mk output really.

devjagadish commented 7 years ago

Hi sej7278, Yes I have a prebuilt .a binary.

Here is my Makefile content

ARDUINO_DIR   = /Applications/Arduino.app/Contents/Java
ARDMK_DIR     = /Users/jagdish/Development/arduino/Arduino-Makefile
AVR_TOOLS_DIR = /usr/local
MONITOR_PORT = /dev/tty.usbmodem1411
BOARD_TAG = uno
ISP_PROG       = arduino
ISP_PORT       = /dev/tty.usbmodem1411
include ../Arduino.mk

And the complete output of arduino-mk

Arduino.mk Configuration:
- [AUTODETECTED]       CURRENT_OS = MAC 
- [USER]               ARDUINO_DIR = /Applications/Arduino.app/Contents/Java 
- [USER]               ARDMK_DIR = /Users/jagdish/Development/arduino/Arduino-Makefile 
- [AUTODETECTED]       ARDUINO_VERSION = 1611 
- [DEFAULT]            ARCHITECTURE = avr 
- [DEFAULT]            ARDMK_VENDOR = arduino 
- [AUTODETECTED]       ARDUINO_PREFERENCES_PATH = /Users/jagdish/Library/Arduino15/preferences.txt 
- [AUTODETECTED]       ARDUINO_SKETCHBOOK = /Users/jagdish/Documents/Arduino (from arduino preferences file)
- [USER]               AVR_TOOLS_DIR = /usr/local 
- [COMPUTED]           ARDUINO_LIB_PATH = /Applications/Arduino.app/Contents/Java/libraries (from ARDUINO_DIR)
- [COMPUTED]           ARDUINO_PLATFORM_LIB_PATH = /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/libraries (from ARDUINO_DIR)
- [COMPUTED]           ARDUINO_VAR_PATH = /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants (from ARDUINO_DIR)
- [COMPUTED]           BOARDS_TXT = /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/boards.txt (from ARDUINO_DIR)
- [DEFAULT]            USER_LIB_PATH = /Users/jagdish/Documents/Arduino/libraries (in user sketchbook)
- [DEFAULT]            PRE_BUILD_HOOK = pre-build-hook.sh 
- [USER]               BOARD_TAG = uno 
- [COMPUTED]           CORE = arduino (from build.core)
- [COMPUTED]           VARIANT = standard (from build.variant)
- [COMPUTED]           OBJDIR = build-uno (from BOARD_TAG)
- [COMPUTED]           ARDUINO_CORE_PATH = /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino (from ARDUINO_DIR, BOARD_TAG and boards.txt)
-                      No .pde or .ino files found. If you are compiling .c or .cpp files then you need to explicitly include Arduino header files
- [ASSUMED]            MONITOR_BAUDRATE = 9600 
- [DEFAULT]            OPTIMIZATION_LEVEL = s 
- [DEFAULT]            MCU_FLAG_NAME = mmcu 
- [DEFAULT]            CFLAGS_STD = -std=gnu11 -flto -fno-fat-lto-objects 
- [DEFAULT]            CXXFLAGS_STD = -std=gnu++11 -fno-threadsafe-statics -flto 
- [COMPUTED]           DEVICE_PATH = /dev/tty.usbmodem1411 (from MONITOR_PORT)
- [DEFAULT]            FORCE_MONITOR_PORT =  
- [AUTODETECTED]       Size utility: AVR-aware for enhanced output
- [COMPUTED]           BOOTLOADER_PARENT = /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/bootloaders (from ARDUINO_DIR)
- [COMPUTED]           ARDMK_VERSION = 1.5 
- [COMPUTED]           CC_VERSION = 4.9.3 (avr-gcc)
-------------------------
mkdir -p build-uno
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -std=gnu11 -flto -fno-fat-lto-objects print.c -o build-uno/print.c.o
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -std=gnu11 -flto -fno-fat-lto-objects randombytes.c -o build-uno/randombytes.c.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto Blink.cpp -o build-uno/Blink.cpp.o
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -std=gnu11 -flto -fno-fat-lto-objects /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/WInterrupts.c -o build-uno/core/WInterrupts.c.o
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -std=gnu11 -flto -fno-fat-lto-objects /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/hooks.c -o build-uno/core/hooks.c.o
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -std=gnu11 -flto -fno-fat-lto-objects /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/wiring.c -o build-uno/core/wiring.c.o
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -std=gnu11 -flto -fno-fat-lto-objects /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/wiring_analog.c -o build-uno/core/wiring_analog.c.o
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -std=gnu11 -flto -fno-fat-lto-objects /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/wiring_digital.c -o build-uno/core/wiring_digital.c.o
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -std=gnu11 -flto -fno-fat-lto-objects /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/wiring_pulse.c -o build-uno/core/wiring_pulse.c.o
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -std=gnu11 -flto -fno-fat-lto-objects /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/wiring_shift.c -o build-uno/core/wiring_shift.c.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/CDC.cpp -o build-uno/core/CDC.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial.cpp -o build-uno/core/HardwareSerial.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial0.cpp -o build-uno/core/HardwareSerial0.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial1.cpp -o build-uno/core/HardwareSerial1.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial2.cpp -o build-uno/core/HardwareSerial2.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial3.cpp -o build-uno/core/HardwareSerial3.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/IPAddress.cpp -o build-uno/core/IPAddress.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/PluggableUSB.cpp -o build-uno/core/PluggableUSB.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/Print.cpp -o build-uno/core/Print.cpp.o
/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/Print.cpp: In member function 'size_t Print::print(const __FlashStringHelper*)':
/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/Print.cpp:46:9: warning: 'prog_char' is deprecated (declared at /usr/local/Cellar/avr-gcc/4.9.3/avr/include/avr/pgmspace.h:354): prog_char type is deprecated. [-Wdeprecated-declarations]
   PGM_P p = reinterpret_cast<PGM_P>(ifsh);
         ^
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/Stream.cpp -o build-uno/core/Stream.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/Tone.cpp -o build-uno/core/Tone.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/USBCore.cpp -o build-uno/core/USBCore.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/WMath.cpp -o build-uno/core/WMath.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/WString.cpp -o build-uno/core/WString.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/abi.cpp -o build-uno/core/abi.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/main.cpp -o build-uno/core/main.cpp.o
/usr/local/bin/avr-g++ -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -fpermissive -fno-exceptions -std=gnu++11 -fno-threadsafe-statics -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/new.cpp -o build-uno/core/new.cpp.o
/usr/local/bin/avr-gcc -MMD -c -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=1611 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/standard    -Wall -ffunction-sections -fdata-sections -Os -x assembler-with-cpp -flto /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/wiring_pulse.S -o build-uno/core/wiring_pulse.S.o
/usr/local/bin/avr-gcc-ar rcs build-uno/libcore.a  build-uno/core/WInterrupts.c.o  build-uno/core/hooks.c.o  build-uno/core/wiring.c.o  build-uno/core/wiring_analog.c.o  build-uno/core/wiring_digital.c.o  build-uno/core/wiring_pulse.c.o  build-uno/core/wiring_shift.c.o  build-uno/core/CDC.cpp.o  build-uno/core/HardwareSerial.cpp.o  build-uno/core/HardwareSerial0.cpp.o  build-uno/core/HardwareSerial1.cpp.o  build-uno/core/HardwareSerial2.cpp.o  build-uno/core/HardwareSerial3.cpp.o  build-uno/core/IPAddress.cpp.o  build-uno/core/PluggableUSB.cpp.o  build-uno/core/Print.cpp.o  build-uno/core/Stream.cpp.o  build-uno/core/Tone.cpp.o  build-uno/core/USBCore.cpp.o  build-uno/core/WMath.cpp.o  build-uno/core/WString.cpp.o  build-uno/core/abi.cpp.o  build-uno/core/main.cpp.o  build-uno/core/new.cpp.o  build-uno/core/wiring_pulse.S.o         
/usr/local/bin/avr-gcc -g -mmcu=atmega328p -Wall -Werror -Wextra -Wl,--gc-sections -Os -flto -fuse-linker-plugin -o build-uno/GrayLock.elf build-uno/print.c.o build-uno/randombytes.c.o build-uno/Blink.cpp.o build-uno/libcore.a  /Users/jagdish/Documents/Arduino/libraries/libnacl.a -lc -lm 
/var/folders/wj/k_j90nx15nx7fql_pb8fg1gr0000gr/T//ccl4wZnK.ltrans0.ltrans.o: In function `HardwareSerial::_tx_udr_empty_irq()':
/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial.cpp:95: undefined reference to `randombytes(unsigned char*, unsigned long long)'
/var/folders/wj/k_j90nx15nx7fql_pb8fg1gr0000gr/T//ccl4wZnK.ltrans0.ltrans.o: In function `HardwareSerial::write(unsigned char)':
/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial.cpp:214: undefined reference to `randombytes(unsigned char*, unsigned long long)'
/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino/HardwareSerial.cpp:225: undefined reference to `crypto_secretbox_xsalsa20poly1305(unsigned char*, unsigned char const*, unsigned int, unsigned char const*, unsigned char const*)'
collect2: error: ld returned 1 exit status
make: *** [build-uno/GrayLock.elf] Error 1
sej7278 commented 7 years ago

i've no idea really, but i don't think it magically finds your .a binary, you'd have to tell it to link it somehow, its not even picking it up as an arduino lib there.

maybe try renaming Blink.cpp to Blink.ino, although i doubt that will do much, i suspect it was just silently failing when it was Blink.c

even the website doesn't actually say how to use it in a program, just how to compile the binary!

devjagadish commented 7 years ago

Sorry for not mentioning that I have added libnacl.a to the CC command in Aurduino.mk file as shown below.

$(TARGET_ELF): $(LOCAL_OBJS) $(CORE_LIB) $(OTHER_OBJS) $(CC) $(LDFLAGS) -o $@ $(LOCAL_OBJS) $(CORE_LIB) $(OTHER_OBJS) $(USER_LIB_PATH)/libnacl.a -lc -lm $(LINKER_SCRIPTS)

When my file was a .c, it got compiled and flashed to the board successfully and on board LED blinks as programmed. I am new to Arduino and Makefiles, not able to understand whats going wrong.

sej7278 commented 7 years ago

well it seems your sketch is just a c file then, and i think what you could do is just add this to your Makefile instead of arduino.mk

OTHER_OBJS = $(USER_LIB_PATH)/libnacl.a

devjagadish commented 7 years ago

Hi sej7278,

It didn't help, my project folder structure looks like this

├── Blink.cpp
├── Makefile
├── avrnacl.h
├── libraries
│   └── libnacl.a
├── print.c
├── print.h
├── randombytes.c
└── randombytes.h

I have attached my sample project, you can see that simply changing the file name from .cpp to .c it works. Blinker.zip

sej7278 commented 7 years ago

ok sure, renaming to .c works, so what's the problem, it is a C file not a C++ one, you're getting errors when trying to compile it as C++ as you'd need to use iostream or the string library for 'char' in C++, neither of which arduino has. you get the same error from the IDE if you rename it to Blink.ino

This Makefile builds Blink.c for me without editing Arduino.mk:

ARDUINO_DIR = $(HOME)/arduino-1.6.11
BOARD_TAG = uno
USER_LIB_PATH = ./libraries
ARDUINO_LIBS = SoftwareSerial
OTHER_OBJS = $(USER_LIB_PATH)/libnacl.a

include /usr/share/arduino/Arduino.mk

p.s. code tags are three backticks, without spaces at beginning and end of code.

devjagadish commented 7 years ago

Thanks for your time, I wanted to use Serial class to print some messages from the board. Serial is Arduino core class. Without adding the nacl library .ino or .cpp file with Serial usage works fine. Not sure how can it cause problem when using external libraries. Can you please suggest any other way to solve this problem?

sej7278 commented 7 years ago

ah i understand now, yes HardwareSerial.h is a C++ class so can't be used from C (you don't want SoftwareSerial, but that wouldn't work either).

sorry i've got no solution to that, you'd have to use extern "C" and write a bunch of interfaces between the c++ methods and c, yuk! or find a c++ version of your library....

devjagadish commented 7 years ago

Thanks, will check if a c++ version of the library exists.