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VS2017 linking problem

Created by: Qbaaa at: 7/20/2017 4:48 PM (1 Replies)

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7/20/2017 4:48 PM	Rate (0)
Qbaaa Member Joined: 8/12/2016 Last visit: 11/7/2019 Posts: 6 Rating: (0)	Hello, I have a problem with remote building on VS2017 when I use SDK libraries. When I build sample eth is OK. 1>------ Rebuild All started: Project: test3, Configuration: Debug x86 ------ 1>Cleaning remote project directory 1>Validating architecture 1>Validating sources 1>Copying sources remotely to '192.168.0.19' 1>Starting remote build 1>Compiling sources: 1>main.cpp 1>Linking objects 1>test3.vcxproj -> C:\Dokumenty\Projekty\Projekty_qba\115-IOT2000\vscode\test3\test3\bin\x86\Debug\test3.out ========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ========== But when I use some ie mraa I have linker problem. 1>------ Rebuild All started: Project: test3, Configuration: Debug x86 ------ 1>Cleaning remote project directory 1>Validating architecture 1>Validating sources 1>Copying sources remotely to '192.168.0.19' 1>Starting remote build 1>Compiling sources: 1>main.cpp 1>C:\Dokumenty\Projekty\Projekty_qba\115-IOT2000\vscode\test3\test3\main.cpp(34,30): warning : suggest parentheses around assignment used as truth value [-Wparentheses] 1>Linking objects 1>C:\Dokumenty\Projekty\Projekty_qba\115-IOT2000\vscode\test3\test3\obj\x86\Debug\main.o: In function `mraa::Gpio: : error : 1>/usr/include/mraa/gpio.hpp(97): error : undefined reference to `mraa_gpio_init_raw' 1>/usr/include/mraa/gpio.hpp(99): error : undefined reference to `mraa_gpio_init' 1>/usr/include/mraa/gpio.hpp(107): error : undefined reference to `mraa_gpio_owner' 1>C:\Dokumenty\Projekty\Projekty_qba\115-IOT2000\vscode\test3\test3\obj\x86\Debug\main.o: In function `mraa::Gpio::dir(mraa: : error : 1>/usr/include/mraa/gpio.hpp(252): error : undefined reference to `mraa_gpio_dir' 1>C:\Dokumenty\Projekty\Projekty_qba\115-IOT2000\vscode\test3\test3\obj\x86\Debug\main.o: In function `mraa::Gpio: : error : 1>/usr/include/mraa/gpio.hpp(290): error : undefined reference to `mraa_gpio_write' 1>collect2 : error : ld returned 1 exit status 1>Done building project "test3.vcxproj" -- FAILED. ========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ========== On Eclipse eth is OK. What could be wrong?

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7/20/2017 8:03 PM	Rate (0)
Qbaaa Member Joined: 8/12/2016 Last visit: 11/7/2019 Posts: 6 Rating: (0)	Ok, I compared with Eclipse and there was "-lmraa" flag in linker missing. Now linking works. Why this flag is needed?

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