PlatformIO cannot handle exceptions with ESP8266

maxgerhardt · October 27, 2020, 5:22pm

Well, that was easy. When sifting through the Arduino IDE linker commands it because apparent…

The linker flags in the Arduino IDE, with exceptions enabled, read:

-lhal -lphy -lpp -lnet80211 -llwip2-536-feat -lwpa -lcrypto -lmain -lwps -lbearssl -laxtls -lespnow -lsmartconfig -lairkiss -lwpa2 -lstdc++-exc -lm -lc -lgcc -Wl,--end-group

Notice the -lstdc++-exc library in there… well PlatformIO does

github.com

esp8266/Arduino/blob/7f38e141c7502032af594fdd502c1b1f6049377c/tools/platformio-build.py#L124-L128


      
          LIBS=[
              "hal", "phy", "pp", "net80211", "wpa", "crypto", "main",
              "wps", "bearssl", "espnow", "smartconfig", "airkiss", "wpa2",
              "stdc++", "m", "c", "gcc"
          ],

…just a linking with stdc++ instead of stdc++-exc in all cases.

Replacing stdc++ with stdc++-exc immediately makes the firmware work with PlatformIO (in C:\Users\<user>\.platformio\packages\framework-arduinoespressif8266\tools\platformio-build.py)

I’ll propose a patch into GitHub - platformio/platform-espressif8266: Espressif 8266: development platform for PlatformIO to get this working.