Issues compiling esp8266 code

[jsloyer]

When I first added the esp8266 code into the Arduino IDE I was able to compile the code and successfully upload it to the esp8266. I tried compiling it a second time without making any changes and got a compile error... Any ideas?

Arduino: 1.8.10 (Mac OS X), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Legacy (new can return nullptr), All SSL ciphers (most compatible), 4MB (FS:2MB OTA:~1019KB), 2, v2 Lower Memory, Disabled, None, Only Sketch, 115200"

In file included from /Users/me/Documents/Arduino/holiday_lights/holiday_lights.ino:7:0:
/Users/me/Documents/Arduino/libraries/FastLED-master/FastLED.h:14:21: note: #pragma message: FastLED version 3.003.002
 #    pragma message "FastLED version 3.003.002"
                     ^
In file included from /Users/me/Documents/Arduino/libraries/FastLED-master/FastLED.h:65:0,
                 from /Users/me/Documents/Arduino/holiday_lights/holiday_lights.ino:7:
/Users/me/Documents/Arduino/libraries/FastLED-master/fastspi.h:130:23: note: #pragma message: No hardware SPI pins defined.  All SPI access will default to bitbanged output
 #      pragma message "No hardware SPI pins defined.  All SPI access will default to bitbanged output"
                       ^
/Users/me/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-4-b40a506/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld: libraries/FastLED-master/bitswap.cpp.o: in function `transpose8x1_noinline(unsigned char*, unsigned char*)':
Multiple libraries were found for "FastLED.h"
 Used: /Users/me/Documents/Arduino/libraries/FastLED-master
Multiple libraries were found for "SimpleTimer.h"
 Used: /Users/me/Documents/Arduino/libraries/Simple-Timer-Library-master
Multiple libraries were found for "PubSubClient.h"
 Used: /Users/me/Documents/Arduino/libraries/pubsubclient-master
Multiple libraries were found for "ESP8266WiFi.h"
 Used: /Users/me/Library/Arduino15/packages/esp8266/hardware/esp8266/2.6.3/libraries/ESP8266WiFi
Multiple libraries were found for "ESP8266mDNS.h"
 Used: /Users/me/Library/Arduino15/packages/esp8266/hardware/esp8266/2.6.3/libraries/ESP8266mDNS
Multiple libraries were found for "ArduinoOTA.h"
 Used: /Users/me/Library/Arduino15/packages/esp8266/hardware/esp8266/2.6.3/libraries/ArduinoOTA
/Users/me/Documents/Arduino/libraries/FastLED-master/bitswap.cpp:11: multiple definition of `transpose8x1_noinline(unsigned char*, unsigned char*)'; libraries/FastLED-master/bitswap 2.cpp.o:/Users/me/Documents/Arduino/libraries/FastLED-master/bitswap 2.cpp:11: first defined here
collect2: error: ld returned 1 exit status
exit status 1
Error compiling for board NodeMCU 1.0 (ESP-12E Module).

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

[zskullz]

It looks like you may have added the dependent libraries in two separate places, try to remove one and see if it will compile. If that doesn't work, enable verbose output as outlined at the end of your error post and add it to this thread