multiple definition of premain(), main() when using MySensors
#283
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@pfeerick One way to solve this using the advanced features of platformio is like this: In Then create the This doesn't solve the initial problem of course but until then it's just a quick workaround let's say. What it does in essence is before building the project it will search for all the Hope it helps for now. |
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Sounds nice! Thanks for that! :) Handy |
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For anyone struggling with the same issue: If you get "KeyError: 'PROJECTPACKAGES_DIR':" change the expression accordingly. |
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This issue should be solved since the 1.8.0 release of the STM32 core as I've planned to support MySensors and I've met this issue so I've fix it. |
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I'm using platformio 4.3.4 and ST STM32 8.0.0, hitting the following error (building MySensors for BlackPill): I'm a little confused by "1.8.0 relase". Does this refer to 8.0 or is there another libary involved? |
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I'm talking about those version: For PIO, V7.0.0 include the STM32 core version 1.9.0: So as I mentioned the MySensors library requires some update to handle properly this core like it has been done for Roger's core. |
Have a closer look at the build output - it will tell you up the top (1) the platformio package version and (2) the framework version. PlatformIO package 7.0.0 (not a typo, 8.0.0 is only a few days old) onwards has used arduinoSTM32 1.9.0.
@fpistm Not quite sure what you mean here ...
... since the issue was related to the maple/rogerclark BSP/core. Do you mean you were hoping to get MySensors to add support for the STSTM32 BSP/core after changes made in 1.8.0? i.e. like seeing this PR merged? |
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Oh sorry, my mistake I thought it was with STM32 core not Roger's. Maybe a regression. About the PR, I was not aware there is already one. That's fine as it seems what I've made allows to port properly the library. I will give a try. |
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Thanks for the clarification. I'm using arduinoststm32 v 1.9.0 Building the PR mentioned above I still hit the "multiple definition of `main'" issue: platformio.ini |
No problem ... to err is human and all that jazz ;)
When I initially had this issue, yes. As I said in the initial opening for the issue: "On the Arduino IDE, using the rogerclarkmelbourne/Arduino_STM32 core it works just fine." - hence the issue being lodged against PlatformIO since it's something PIO is doing differenet to the Arduino IDE, when using Rogers BSP. I haven't touched this since, so it's time for a revisit and poke and prod to see if anything has changes now that things have been updated a bit... 🧐 Plus I didn't know about the alternate 'STM32' BSP library forks, so that is a step forward! 😸 |
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Hard'n'dirty workaround for STM32F1 boards: Force attribute((weak)) before framework-arduino preinit() and main() functions... Change main.cpp in ~.platformio/packages/framework-arduinoststm32/cores/arduino with : `/* This library is free software; you can redistribute it and/or This library is distributed in the hope that it will be useful, You should have received a copy of the GNU Lesser General Public #define ARDUINO_MAIN // Force init to be called first, i.e. before static object allocation. // Required by FreeRTOS, see http://www.freertos.org/RTOS-Cortex-M3-M4.html init(); /*
setup(); for (;;) { return 0; build-upload-log:
platformio.ini: `[env:bluepill_f103c8] upload_protocol = stlink lib_deps = |
When using the MySensors library, linking fails with...
... most likely due to the library also having a
premain()andmain()in the hal folder. On the Arduino IDE, using the rogerclarkmelbourne/Arduino_STM32 core it works just fine.But on PlatformIO, with
and the LightSensor example (picked as one of the shorter ones which should 'just compile/work' for any board) - with the requisite
#include <Arduino.h>addition - it fails to build. Addinglib_archive = nodoes not make any noticeable difference. The same code will compile successfully for an atmelavr/uno target with PlatformIO, even though it appears the same form of collision should be happening there also.Forum ref: https://community.platformio.org/t/how-to-eliminate-conflicting-symbols-arduinoststm32-maple-mysensors-lib/9509
Click to expand - Arduino IDE Compile verbose log
Click to expand - PlatformIO Verbose Build log
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