Compiling error a code which works fine few month ago

#1

Hey @ all,

i work now already more than one year with platformio and i really like it.
But i try to comile a code which i made few month ago and it works fine with wemos d1 mini.

Now i try to compile the same code again to upload it again to another board and i have all the the time the same error message. Doesnt matter which computer i try…

I hope somebody can help me here…

the erroer message:

c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::write(unsigned char)':
WiFiClient.cpp:(.text._ZN10WiFiClient5writeEh+0x0): multiple definition of `WiFiClient::write(unsigned char)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient5writeEh+0x0): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::peek()':
WiFiClient.cpp:(.text._ZN10WiFiClient4peekEv+0x0): multiple definition of `WiFiClient::peek()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient4peekEv+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::connect(char const*, unsigned short)':
WiFiClient.cpp:(.text._ZN10WiFiClient7connectEPKct+0x10): multiple definition of `WiFiClient::connect(char const*, unsigned short)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient7connectEPKct+0x10): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::available()':
WiFiClient.cpp:(.text._ZN10WiFiClient9availableEv+0x4): multiple definition of `WiFiClient::available()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient9availableEv+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::operator bool()':
WiFiClient.cpp:(.text._ZN10WiFiClientcvbEv+0x0): multiple definition of `WiFiClient::operator bool()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClientcvbEv+0x0): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::connected()':
WiFiClient.cpp:(.text._ZN10WiFiClient9connectedEv+0x4): multiple definition of `WiFiClient::connected()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient9connectedEv+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::write(unsigned char const*, unsigned int)':
WiFiClient.cpp:(.text._ZN10WiFiClient5writeEPKhj+0xc): multiple definition of `WiFiClient::write(unsigned char const*, unsigned int)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient5writeEPKhj+0x8): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::read()':
WiFiClient.cpp:(.text._ZN10WiFiClient4readEv+0x4): multiple definition of `WiFiClient::read()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient4readEv+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::read(unsigned char*, unsigned int)':WiFiClient.cpp:(.text._ZN10WiFiClient4readEPhj+0x8): multiple definition of `WiFiClient::read(unsigned char*, unsigned int)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient4readEPhj+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::WiFiClient()':
WiFiClient.cpp:(.text._ZN10WiFiClientC2Ev+0xc): multiple definition of `WiFiClient::WiFiClient()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClientC2Ev+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::WiFiClient()':
WiFiClient.cpp:(.text._ZN10WiFiClientC2Ev+0xc): multiple definition of `WiFiClient::WiFiClient()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClientC2Ev+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::connect(IPAddress, unsigned short)':WiFiClient.cpp:(.text._ZN10WiFiClient7connectE9IPAddresst+0x68): multiple definition of `WiFiClient::connect(IPAddress, unsigned short)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient7connectE9IPAddresst+0x28): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiClient.cpp.o): in function `WiFiClient::status()':
WiFiClient.cpp:(.text._ZN10WiFiClient6statusEv+0x4): multiple definition of `WiFiClient::status()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiClient.cpp.o):WiFiClient.cpp:(.text._ZN10WiFiClient6statusEv+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiServer.cpp.o): in function `WiFiServer::write(unsigned char)':
WiFiServer.cpp:(.text._ZN10WiFiServer5writeEh+0x0): multiple definition of `WiFiServer::write(unsigned char)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiServer.cpp.o):WiFiServer.cpp:(.text._ZN10WiFiServer5writeEh+0x0): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiServer.cpp.o): in function `WiFiServer::write(unsigned char const*, unsigned int)':
WiFiServer.cpp:(.text._ZN10WiFiServer5writeEPKhj+0x0): multiple definition of `WiFiServer::write(unsigned char const*, unsigned int)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiServer.cpp.o):WiFiServer.cpp:(.text._ZN10WiFiServer5writeEPKhj+0x10): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiServer.cpp.o): in function `WiFiServer::WiFiServer(unsigned short)':        
WiFiServer.cpp:(.text._ZN10WiFiServerC2Et+0xc): multiple definition of `WiFiServer::WiFiServer(unsigned short)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiServer.cpp.o):WiFiServer.cpp:(.text._ZN10WiFiServerC2Et+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiServer.cpp.o): in function `WiFiServer::WiFiServer(unsigned short)':        
WiFiServer.cpp:(.text._ZN10WiFiServerC2Et+0xc): multiple definition of `WiFiServer::WiFiServer(unsigned short)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiServer.cpp.o):WiFiServer.cpp:(.text._ZN10WiFiServerC2Et+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiServer.cpp.o): in function `WiFiServer::status()':
WiFiServer.cpp:(.text._ZN10WiFiServer6statusEv+0x0): multiple definition of `WiFiServer::status()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiServer.cpp.o):WiFiServer.cpp:(.text._ZN10WiFiServer6statusEv+0x4): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiServer.cpp.o): in function `WiFiServer::begin()':
WiFiServer.cpp:(.text._ZN10WiFiServer5beginEv+0x4): multiple definition of `WiFiServer::begin()'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiServer.cpp.o):WiFiServer.cpp:(.text._ZN10WiFiServer5beginEv+0x10): first defined here
c:/users/dell/.platformio/packages/toolchain-xtensa/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: .pio\build\d1_mini\lib7af\libESP8266WiFi.a(WiFiServer.cpp.o): in function `WiFiServer::available(unsigned char*)':
WiFiServer.cpp:(.text._ZN10WiFiServer9availableEPh+0x20): multiple definition of `WiFiServer::available(unsigned char*)'; .pio\build\d1_mini\lib63f\libWiFi_ID870.a(WiFiServer.cpp.o):WiFiServer.cpp:(.text._ZN10WiFiServer9availableEPh+0x20): first defined 
here
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\d1_mini\firmware.elf] Error 1
#2

There are two different and conflicting libraries installed / compiled into the project, most likely WiFi.h and ESP8266WiFi.h.

Show us the dependency graph which is output at the start of the compilation please.

2 Likes
#3

Hey Max,

thank you for your fast reply.

Do You mean this part?

> Executing task in folder ESP-01s_GARAGENTOR_OEFFNER: C:\Users\Dell\.platformio\penv\Scripts\platformio.exe run <
Processing d1_mini (platform: espressif8266; board: d1_mini; framework: arduino)
-------------------------------------------------------------------------------------------------------------------------------Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/espressif8266/d1_mini.html
PLATFORM: Espressif 8266 2.6.2 > WeMos D1 R2 and mini
HARDWARE: ESP8266 80MHz, 80KB RAM, 4MB Flash
PACKAGES:
 - framework-arduinoespressif8266 3.20704.0 (2.7.4)
 - tool-esptool 1.413.0 (4.13)
 - tool-esptoolpy 1.20800.0 (2.8.0)
 - toolchain-xtensa 2.40802.200502 (4.8.2)
LDF: Library Dependency Finder -> http://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 36 compatible libraries
Scanning dependencies...
Dependency Graph
|-- <ESP8266WebServer> 1.0
|   |-- <WiFi> 1.2.7      
|   |   |-- <SPI> 1.0     
|   |-- <ESP8266WiFi> 1.0 
|-- <ESP8266WiFi> 1.0     
|-- <WiFi> 1.2.7
|   |-- <SPI> 1.0
Building in release mode
Linking .pio\build\d1_mini\firmware.elf
#4

i uninstall the WIFI.h by Arduino and now it works :blush:

Many Thanks…

#5

Yes this indeed doesn’t look good. Don’t know why it’s attempting to include two WiFi libraries without seeing the code though.

You removed it in the framework folder (C:\Users\<user>\.platformio\packages\framework-arduinoespressif8266)? Uhm deletion of something in there usually isn’t good… If you have modified something in there, you can delete the whole framework-arduinoespressif8266 folder an PIO will redownload it.

Maybe as a proper fix, try setting the library dependency finder mode to a higher level in the platformio.ini so that it may detect what libraries are actually used… (docs)

lib_ldf_mode = chain+
1 Like
#6

Hey Max,

I unistall the WIFIh library via the library Manager.

Okay i will try your solution and i will give a Feedback…

1 Like
#7

If you installed it via the Library Manager in the first place - that is likely your problem. The ‘Install’ function in the Library Manager unfortunately installs to global library storage, which can result in incompatible libraries being pulled into your project - like the WiFi library. :frowning: