Using the Arduino_debug (1.8.5) app with a Teensy LC board and have received this error message:
Arduino: 1.8.5 (Windows 10), TD: 1.44, Board: "Teensy LC, Serial, 48 MHz, Smallest Code, US English"
C:\Users\Gary\Documents\arduino-1.8.5\arduino-builder -dump-prefs -logger=machine -hardware C:\Users\Gary\Documents\arduino-1.8.5\hardware -tools C:\Users\Gary\Documents\arduino-1.8.5\tools-builder -tools C:\Users\Gary\Documents\arduino-1.8.5\hardware\tools\avr -built-in-libraries C:\Users\Gary\Documents\arduino-1.8.5\libraries -libraries C:\Users\Gary\Documents\Arduino\libraries -fqbn=teensy:avr:teensyLC:usb=serial,speed=48,opt=osstd,keys=en-us -ide-version=10805 -build-path C:\Users\Gary\AppData\Local\Temp\arduino_build_663139 -warnings=none -build-cache C:\Users\Gary\AppData\Local\Temp\arduino_cache_904727 -verbose C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited\HealthySole_Rangefinder_Final_edited.ino
C:\Users\Gary\Documents\arduino-1.8.5\arduino-builder -compile -logger=machine -hardware C:\Users\Gary\Documents\arduino-1.8.5\hardware -tools C:\Users\Gary\Documents\arduino-1.8.5\tools-builder -tools C:\Users\Gary\Documents\arduino-1.8.5\hardware\tools\avr -built-in-libraries C:\Users\Gary\Documents\arduino-1.8.5\libraries -libraries C:\Users\Gary\Documents\Arduino\libraries -fqbn=teensy:avr:teensyLC:usb=serial,speed=48,opt=osstd,keys=en-us -ide-version=10805 -build-path C:\Users\Gary\AppData\Local\Temp\arduino_build_663139 -warnings=none -build-cache C:\Users\Gary\AppData\Local\Temp\arduino_cache_904727 -verbose C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited\HealthySole_Rangefinder_Final_edited.ino
Using board 'teensyLC' from platform in folder: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr
Using core 'teensy3' from platform in folder: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr
Detecting libraries used...
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp" -o "nul"
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3" "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp" -o "nul"
Using cached library dependencies for file: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire\Wire.cpp
Using cached library dependencies for file: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire\WireKinetis.cpp
Using cached library dependencies for file: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire\utility\twi.c
Generating function prototypes...
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3" "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp" -o "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\preproc\ctags_target_for_gcc_minus_e.cpp"
"C:\Users\Gary\Documents\arduino-1.8.5\tools-builder\ctags\5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\preproc\ctags_target_for_gcc_minus_e.cpp"
Compiling sketch...
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/precompile_helper" "C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr/cores/teensy3" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139" "C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -x c++-header -Os --specs=nano.specs -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr/cores/teensy3" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139/pch/Arduino.h" -o "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139/pch/Arduino.h.gch"
Using previously compiled file: C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\pch\Arduino.h.gch
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -c -Os --specs=nano.specs -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\AppData\Local\Temp\arduino_build_663139/pch" "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3" "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp" -o "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o"
Compiling libraries...
Compiling library "Wire"
Using previously compiled file: C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\Wire.cpp.o
Using previously compiled file: C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\WireKinetis.cpp.o
Using previously compiled file: C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\utility\twi.c.o
Compiling core...
Using precompiled core
Linking everything together...
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-gcc" -Os --specs=nano.specs -Wl,--gc-sections,--relax,--defsym=__rtc_localtime=1546888311 "-TC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3/mkl26z64.ld" -lstdc++ -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -o "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139/HealthySole_Rangefinder_Final_edited.ino.elf" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\Wire.cpp.o" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\WireKinetis.cpp.o" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\utility\twi.c.o" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139/..\arduino_cache_904727\core\core_teensy_avr_teensyLC_usb_serial,speed_48,opt_osstd,keys_en-us_d13639306e5d6f50f9f1230d163a0786.a" "-LC:\Users\Gary\AppData\Local\Temp\arduino_build_663139" -larm_cortexM0l_math -lm
C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o: In function `__static_initialization_and_destruction_0':
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:38: undefined reference to `VL6180X::VL6180X()'
C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o: In function `init_sensor(unsigned char)':
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:82: undefined reference to `VL6180X::init()'
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:83: undefined reference to `VL6180X::configureDefault()'
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:85: undefined reference to `VL6180X::stopContinuous()'
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:88: undefined reference to `VL6180X::startRangeContinuous(unsigned short)'
C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o: In function `VL6180X::readRangeContinuousMillimeters()':
C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire/VL6180X.h:114: undefined reference to `VL6180X::readRangeContinuous()'
C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o: In function `get_sensor_data(unsigned char)':
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:99: undefined reference to `VL6180X::timeoutOccurred()'
collect2.exe: error: ld returned 1 exit status
Using library Wire at version 1.0 in folder: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire
Error compiling for board Teensy LC.
The VL6180X.h file is indeed stored in the location indicated by the error message- this was confirmed by a third party. Relatively unfamiliar with Teensy as I come from a Biology background so I'd greatly appreciate responses with my elementary understanding considered. Where can I go from here? Thanks.
Arduino: 1.8.5 (Windows 10), TD: 1.44, Board: "Teensy LC, Serial, 48 MHz, Smallest Code, US English"
C:\Users\Gary\Documents\arduino-1.8.5\arduino-builder -dump-prefs -logger=machine -hardware C:\Users\Gary\Documents\arduino-1.8.5\hardware -tools C:\Users\Gary\Documents\arduino-1.8.5\tools-builder -tools C:\Users\Gary\Documents\arduino-1.8.5\hardware\tools\avr -built-in-libraries C:\Users\Gary\Documents\arduino-1.8.5\libraries -libraries C:\Users\Gary\Documents\Arduino\libraries -fqbn=teensy:avr:teensyLC:usb=serial,speed=48,opt=osstd,keys=en-us -ide-version=10805 -build-path C:\Users\Gary\AppData\Local\Temp\arduino_build_663139 -warnings=none -build-cache C:\Users\Gary\AppData\Local\Temp\arduino_cache_904727 -verbose C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited\HealthySole_Rangefinder_Final_edited.ino
C:\Users\Gary\Documents\arduino-1.8.5\arduino-builder -compile -logger=machine -hardware C:\Users\Gary\Documents\arduino-1.8.5\hardware -tools C:\Users\Gary\Documents\arduino-1.8.5\tools-builder -tools C:\Users\Gary\Documents\arduino-1.8.5\hardware\tools\avr -built-in-libraries C:\Users\Gary\Documents\arduino-1.8.5\libraries -libraries C:\Users\Gary\Documents\Arduino\libraries -fqbn=teensy:avr:teensyLC:usb=serial,speed=48,opt=osstd,keys=en-us -ide-version=10805 -build-path C:\Users\Gary\AppData\Local\Temp\arduino_build_663139 -warnings=none -build-cache C:\Users\Gary\AppData\Local\Temp\arduino_cache_904727 -verbose C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited\HealthySole_Rangefinder_Final_edited.ino
Using board 'teensyLC' from platform in folder: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr
Using core 'teensy3' from platform in folder: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr
Detecting libraries used...
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp" -o "nul"
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3" "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp" -o "nul"
Using cached library dependencies for file: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire\Wire.cpp
Using cached library dependencies for file: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire\WireKinetis.cpp
Using cached library dependencies for file: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire\utility\twi.c
Generating function prototypes...
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3" "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp" -o "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\preproc\ctags_target_for_gcc_minus_e.cpp"
"C:\Users\Gary\Documents\arduino-1.8.5\tools-builder\ctags\5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\preproc\ctags_target_for_gcc_minus_e.cpp"
Compiling sketch...
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/precompile_helper" "C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr/cores/teensy3" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139" "C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -x c++-header -Os --specs=nano.specs -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr/cores/teensy3" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139/pch/Arduino.h" -o "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139/pch/Arduino.h.gch"
Using previously compiled file: C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\pch\Arduino.h.gch
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-g++" -c -Os --specs=nano.specs -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -D__MKL26Z64__ -DTEENSYDUINO=144 -DARDUINO=10805 -DF_CPU=48000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\Users\Gary\AppData\Local\Temp\arduino_build_663139/pch" "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3" "-IC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp" -o "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o"
Compiling libraries...
Compiling library "Wire"
Using previously compiled file: C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\Wire.cpp.o
Using previously compiled file: C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\WireKinetis.cpp.o
Using previously compiled file: C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\utility\twi.c.o
Compiling core...
Using precompiled core
Linking everything together...
"C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy/../tools/arm/bin/arm-none-eabi-gcc" -Os --specs=nano.specs -Wl,--gc-sections,--relax,--defsym=__rtc_localtime=1546888311 "-TC:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\cores\teensy3/mkl26z64.ld" -lstdc++ -mthumb -mcpu=cortex-m0plus -fsingle-precision-constant -o "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139/HealthySole_Rangefinder_Final_edited.ino.elf" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\Wire.cpp.o" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\WireKinetis.cpp.o" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\libraries\Wire\utility\twi.c.o" "C:\Users\Gary\AppData\Local\Temp\arduino_build_663139/..\arduino_cache_904727\core\core_teensy_avr_teensyLC_usb_serial,speed_48,opt_osstd,keys_en-us_d13639306e5d6f50f9f1230d163a0786.a" "-LC:\Users\Gary\AppData\Local\Temp\arduino_build_663139" -larm_cortexM0l_math -lm
C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o: In function `__static_initialization_and_destruction_0':
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:38: undefined reference to `VL6180X::VL6180X()'
C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o: In function `init_sensor(unsigned char)':
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:82: undefined reference to `VL6180X::init()'
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:83: undefined reference to `VL6180X::configureDefault()'
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:85: undefined reference to `VL6180X::stopContinuous()'
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:88: undefined reference to `VL6180X::startRangeContinuous(unsigned short)'
C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o: In function `VL6180X::readRangeContinuousMillimeters()':
C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire/VL6180X.h:114: undefined reference to `VL6180X::readRangeContinuous()'
C:\Users\Gary\AppData\Local\Temp\arduino_build_663139\sketch\HealthySole_Rangefinder_Final_edited.ino.cpp.o: In function `get_sensor_data(unsigned char)':
C:\Users\Gary\Documents\Arduino\HealthySole_Rangefinder_Final_edited/HealthySole_Rangefinder_Final_edited.ino:99: undefined reference to `VL6180X::timeoutOccurred()'
collect2.exe: error: ld returned 1 exit status
Using library Wire at version 1.0 in folder: C:\Users\Gary\Documents\arduino-1.8.5\hardware\teensy\avr\libraries\Wire
Error compiling for board Teensy LC.
The VL6180X.h file is indeed stored in the location indicated by the error message- this was confirmed by a third party. Relatively unfamiliar with Teensy as I come from a Biology background so I'd greatly appreciate responses with my elementary understanding considered. Where can I go from here? Thanks.